drivers/media/tuners/tda18271-fe.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3     tda18271-fe.c - driver for the Philips / NXP TDA18271 silicon tuner
   4
   5     Copyright (C) 2007, 2008 Michael Krufky <mkrufky@linuxtv.org>
   6
   7 */
   8
   9 #include "tda18271-priv.h"
  10 #include "tda8290.h"
  11
  12 #include <linux/delay.h>
  13 #include <linux/videodev2.h>
  14
  15 int tda18271_debug;
  16 module_param_named(debug, tda18271_debug, int, 0644);
  17 MODULE_PARM_DESC(debug, "set debug level (info=1, map=2, reg=4, adv=8, cal=16 (or-able))");
  18
  19 static int tda18271_cal_on_startup = -1;
  20 module_param_named(cal, tda18271_cal_on_startup, int, 0644);
  21 MODULE_PARM_DESC(cal, "perform RF tracking filter calibration on startup");
  22
  23 static DEFINE_MUTEX(tda18271_list_mutex);
  24 static LIST_HEAD(hybrid_tuner_instance_list);
  25
  26 /*---------------------------------------------------------------------*/
  27
  28 static int tda18271_toggle_output(struct dvb_frontend *fe, int standby)
  29 {
  30         struct tda18271_priv *priv = fe->tuner_priv;
  31
  32         int ret = tda18271_set_standby_mode(fe, standby ? 1 : 0,
  33                         priv->output_opt & TDA18271_OUTPUT_LT_OFF ? 1 : 0,
  34                         priv->output_opt & TDA18271_OUTPUT_XT_OFF ? 1 : 0);
  35
  36         if (tda_fail(ret))
  37                 goto fail;
  38
  39         tda_dbg("%s mode: xtal oscillator %s, slave tuner loop through %s\n",
  40                 standby ? "standby" : "active",
  41                 priv->output_opt & TDA18271_OUTPUT_XT_OFF ? "off" : "on",
  42                 priv->output_opt & TDA18271_OUTPUT_LT_OFF ? "off" : "on");
  43 fail:
  44         return ret;
  45 }
  46
  47 /*---------------------------------------------------------------------*/
  48
  49 static inline int charge_pump_source(struct dvb_frontend *fe, int force)
  50 {
  51         struct tda18271_priv *priv = fe->tuner_priv;
  52         return tda18271_charge_pump_source(fe,
  53                                            (priv->role == TDA18271_SLAVE) ?
  54                                            TDA18271_CAL_PLL :
  55                                            TDA18271_MAIN_PLL, force);
  56 }
  57
  58 static inline void tda18271_set_if_notch(struct dvb_frontend *fe)
  59 {
  60         struct tda18271_priv *priv = fe->tuner_priv;
  61         unsigned char *regs = priv->tda18271_regs;
  62
  63         switch (priv->mode) {
  64         case TDA18271_ANALOG:
  65                 regs[R_MPD]  &= ~0x80; /* IF notch = 0 */
  66                 break;
  67         case TDA18271_DIGITAL:
  68                 regs[R_MPD]  |= 0x80; /* IF notch = 1 */
  69                 break;
  70         }
  71 }
  72
  73 static int tda18271_channel_configuration(struct dvb_frontend *fe,
  74                                           struct tda18271_std_map_item *map,
  75                                           u32 freq, u32 bw)
  76 {
  77         struct tda18271_priv *priv = fe->tuner_priv;
  78         unsigned char *regs = priv->tda18271_regs;
  79         int ret;
  80         u32 N;
  81
  82         /* update TV broadcast parameters */
  83
  84         /* set standard */
  85         regs[R_EP3]  &= ~0x1f; /* clear std bits */
  86         regs[R_EP3]  |= (map->agc_mode << 3) | map->std;
  87
  88         if (priv->id == TDA18271HDC2) {
  89                 /* set rfagc to high speed mode */
  90                 regs[R_EP3] &= ~0x04;
  91         }
  92
  93         /* set cal mode to normal */
  94         regs[R_EP4]  &= ~0x03;
  95
  96         /* update IF output level */
  97         regs[R_EP4]  &= ~0x1c; /* clear if level bits */
  98         regs[R_EP4]  |= (map->if_lvl << 2);
  99
 100         /* update FM_RFn */
 101         regs[R_EP4]  &= ~0x80;
 102         regs[R_EP4]  |= map->fm_rfn << 7;
 103
 104         /* update rf top / if top */
 105         regs[R_EB22]  = 0x00;
 106         regs[R_EB22] |= map->rfagc_top;
 107         ret = tda18271_write_regs(fe, R_EB22, 1);
 108         if (tda_fail(ret))
 109                 goto fail;
 110
 111         /* --------------------------------------------------------------- */
 112
 113         /* disable Power Level Indicator */
 114         regs[R_EP1]  |= 0x40;
 115
 116         /* make sure thermometer is off */
 117         regs[R_TM]   &= ~0x10;
 118
 119         /* frequency dependent parameters */
 120
 121         tda18271_calc_ir_measure(fe, &freq);
 122
 123         tda18271_calc_bp_filter(fe, &freq);
 124
 125         tda18271_calc_rf_band(fe, &freq);
 126
 127         tda18271_calc_gain_taper(fe, &freq);
 128
 129         /* --------------------------------------------------------------- */
 130
 131         /* dual tuner and agc1 extra configuration */
 132
 133         switch (priv->role) {
 134         case TDA18271_MASTER:
 135                 regs[R_EB1]  |= 0x04; /* main vco */
 136                 break;
 137         case TDA18271_SLAVE:
 138                 regs[R_EB1]  &= ~0x04; /* cal vco */
 139                 break;
 140         }
 141
 142         /* agc1 always active */
 143         regs[R_EB1]  &= ~0x02;
 144
 145         /* agc1 has priority on agc2 */
 146         regs[R_EB1]  &= ~0x01;
 147
 148         ret = tda18271_write_regs(fe, R_EB1, 1);
 149         if (tda_fail(ret))
 150                 goto fail;
 151
 152         /* --------------------------------------------------------------- */
 153
 154         N = map->if_freq * 1000 + freq;
 155
 156         switch (priv->role) {
 157         case TDA18271_MASTER:
 158                 tda18271_calc_main_pll(fe, N);
 159                 tda18271_set_if_notch(fe);
 160                 tda18271_write_regs(fe, R_MPD, 4);
 161                 break;
 162         case TDA18271_SLAVE:
 163                 tda18271_calc_cal_pll(fe, N);
 164                 tda18271_write_regs(fe, R_CPD, 4);
 165
 166                 regs[R_MPD] = regs[R_CPD] & 0x7f;
 167                 tda18271_set_if_notch(fe);
 168                 tda18271_write_regs(fe, R_MPD, 1);
 169                 break;
 170         }
 171
 172         ret = tda18271_write_regs(fe, R_TM, 7);
 173         if (tda_fail(ret))
 174                 goto fail;
 175
 176         /* force charge pump source */
 177         charge_pump_source(fe, 1);
 178
 179         msleep(1);
 180
 181         /* return pll to normal operation */
 182         charge_pump_source(fe, 0);
 183
 184         msleep(20);
 185
 186         if (priv->id == TDA18271HDC2) {
 187                 /* set rfagc to normal speed mode */
 188                 if (map->fm_rfn)
 189                         regs[R_EP3] &= ~0x04;
 190                 else
 191                         regs[R_EP3] |= 0x04;
 192                 ret = tda18271_write_regs(fe, R_EP3, 1);
 193         }
 194 fail:
 195         return ret;
 196 }
 197
 198 static int tda18271_read_thermometer(struct dvb_frontend *fe)
 199 {
 200         struct tda18271_priv *priv = fe->tuner_priv;
 201         unsigned char *regs = priv->tda18271_regs;
 202         int tm;
 203
 204         /* switch thermometer on */
 205         regs[R_TM]   |= 0x10;
 206         tda18271_write_regs(fe, R_TM, 1);
 207
 208         /* read thermometer info */
 209         tda18271_read_regs(fe);
 210
 211         if ((((regs[R_TM] & 0x0f) == 0x00) && ((regs[R_TM] & 0x20) == 0x20)) ||
 212             (((regs[R_TM] & 0x0f) == 0x08) && ((regs[R_TM] & 0x20) == 0x00))) {
 213
 214                 if ((regs[R_TM] & 0x20) == 0x20)
 215                         regs[R_TM] &= ~0x20;
 216                 else
 217                         regs[R_TM] |= 0x20;
 218
 219                 tda18271_write_regs(fe, R_TM, 1);
 220
 221                 msleep(10); /* temperature sensing */
 222
 223                 /* read thermometer info */
 224                 tda18271_read_regs(fe);
 225         }
 226
 227         tm = tda18271_lookup_thermometer(fe);
 228
 229         /* switch thermometer off */
 230         regs[R_TM]   &= ~0x10;
 231         tda18271_write_regs(fe, R_TM, 1);
 232
 233         /* set CAL mode to normal */
 234         regs[R_EP4]  &= ~0x03;
 235         tda18271_write_regs(fe, R_EP4, 1);
 236
 237         return tm;
 238 }
 239
 240 /* ------------------------------------------------------------------ */
 241
 242 static int tda18271c2_rf_tracking_filters_correction(struct dvb_frontend *fe,
 243                                                      u32 freq)
 244 {
 245         struct tda18271_priv *priv = fe->tuner_priv;
 246         struct tda18271_rf_tracking_filter_cal *map = priv->rf_cal_state;
 247         unsigned char *regs = priv->tda18271_regs;
 248         int i, ret;
 249         u8 tm_current, dc_over_dt, rf_tab;
 250         s32 rfcal_comp, approx;
 251
 252         /* power up */
 253         ret = tda18271_set_standby_mode(fe, 0, 0, 0);
 254         if (tda_fail(ret))
 255                 goto fail;
 256
 257         /* read die current temperature */
 258         tm_current = tda18271_read_thermometer(fe);
 259
 260         /* frequency dependent parameters */
 261
 262         tda18271_calc_rf_cal(fe, &freq);
 263         rf_tab = regs[R_EB14];
 264
 265         i = tda18271_lookup_rf_band(fe, &freq, NULL);
 266         if (tda_fail(i))
 267                 return i;
 268
 269         if ((0 == map[i].rf3) || (freq / 1000 < map[i].rf2)) {
 270                 approx = map[i].rf_a1 * (s32)(freq / 1000 - map[i].rf1) +
 271                         map[i].rf_b1 + rf_tab;
 272         } else {
 273                 approx = map[i].rf_a2 * (s32)(freq / 1000 - map[i].rf2) +
 274                         map[i].rf_b2 + rf_tab;
 275         }
 276
 277         if (approx < 0)
 278                 approx = 0;
 279         if (approx > 255)
 280                 approx = 255;
 281
 282         tda18271_lookup_map(fe, RF_CAL_DC_OVER_DT, &freq, &dc_over_dt);
 283
 284         /* calculate temperature compensation */
 285         rfcal_comp = dc_over_dt * (s32)(tm_current - priv->tm_rfcal) / 1000;
 286
 287         regs[R_EB14] = (unsigned char)(approx + rfcal_comp);
 288         ret = tda18271_write_regs(fe, R_EB14, 1);
 289 fail:
 290         return ret;
 291 }
 292
 293 static int tda18271_por(struct dvb_frontend *fe)
 294 {
 295         struct tda18271_priv *priv = fe->tuner_priv;
 296         unsigned char *regs = priv->tda18271_regs;
 297         int ret;
 298
 299         /* power up detector 1 */
 300         regs[R_EB12] &= ~0x20;
 301         ret = tda18271_write_regs(fe, R_EB12, 1);
 302         if (tda_fail(ret))
 303                 goto fail;
 304
 305         regs[R_EB18] &= ~0x80; /* turn agc1 loop on */
 306         regs[R_EB18] &= ~0x03; /* set agc1_gain to  6 dB */
 307         ret = tda18271_write_regs(fe, R_EB18, 1);
 308         if (tda_fail(ret))
 309                 goto fail;
 310
 311         regs[R_EB21] |= 0x03; /* set agc2_gain to -6 dB */
 312
 313         /* POR mode */
 314         ret = tda18271_set_standby_mode(fe, 1, 0, 0);
 315         if (tda_fail(ret))
 316                 goto fail;
 317
 318         /* disable 1.5 MHz low pass filter */
 319         regs[R_EB23] &= ~0x04; /* forcelp_fc2_en = 0 */
 320         regs[R_EB23] &= ~0x02; /* XXX: lp_fc[2] = 0 */
 321         ret = tda18271_write_regs(fe, R_EB21, 3);
 322 fail:
 323         return ret;
 324 }
 325
 326 static int tda18271_calibrate_rf(struct dvb_frontend *fe, u32 freq)
 327 {
 328         struct tda18271_priv *priv = fe->tuner_priv;
 329         unsigned char *regs = priv->tda18271_regs;
 330         u32 N;
 331
 332         /* set CAL mode to normal */
 333         regs[R_EP4]  &= ~0x03;
 334         tda18271_write_regs(fe, R_EP4, 1);
 335
 336         /* switch off agc1 */
 337         regs[R_EP3]  |= 0x40; /* sm_lt = 1 */
 338
 339         regs[R_EB18] |= 0x03; /* set agc1_gain to 15 dB */
 340         tda18271_write_regs(fe, R_EB18, 1);
 341
 342         /* frequency dependent parameters */
 343
 344         tda18271_calc_bp_filter(fe, &freq);
 345         tda18271_calc_gain_taper(fe, &freq);
 346         tda18271_calc_rf_band(fe, &freq);
 347         tda18271_calc_km(fe, &freq);
 348
 349         tda18271_write_regs(fe, R_EP1, 3);
 350         tda18271_write_regs(fe, R_EB13, 1);
 351
 352         /* main pll charge pump source */
 353         tda18271_charge_pump_source(fe, TDA18271_MAIN_PLL, 1);
 354
 355         /* cal pll charge pump source */
 356         tda18271_charge_pump_source(fe, TDA18271_CAL_PLL, 1);
 357
 358         /* force dcdc converter to 0 V */
 359         regs[R_EB14] = 0x00;
 360         tda18271_write_regs(fe, R_EB14, 1);
 361
 362         /* disable plls lock */
 363         regs[R_EB20] &= ~0x20;
 364         tda18271_write_regs(fe, R_EB20, 1);
 365
 366         /* set CAL mode to RF tracking filter calibration */
 367         regs[R_EP4]  |= 0x03;
 368         tda18271_write_regs(fe, R_EP4, 2);
 369
 370         /* --------------------------------------------------------------- */
 371
 372         /* set the internal calibration signal */
 373         N = freq;
 374
 375         tda18271_calc_cal_pll(fe, N);
 376         tda18271_write_regs(fe, R_CPD, 4);
 377
 378         /* downconvert internal calibration */
 379         N += 1000000;
 380
 381         tda18271_calc_main_pll(fe, N);
 382         tda18271_write_regs(fe, R_MPD, 4);
 383
 384         msleep(5);
 385
 386         tda18271_write_regs(fe, R_EP2, 1);
 387         tda18271_write_regs(fe, R_EP1, 1);
 388         tda18271_write_regs(fe, R_EP2, 1);
 389         tda18271_write_regs(fe, R_EP1, 1);
 390
 391         /* --------------------------------------------------------------- */
 392
 393         /* normal operation for the main pll */
 394         tda18271_charge_pump_source(fe, TDA18271_MAIN_PLL, 0);
 395
 396         /* normal operation for the cal pll  */
 397         tda18271_charge_pump_source(fe, TDA18271_CAL_PLL, 0);
 398
 399         msleep(10); /* plls locking */
 400
 401         /* launch the rf tracking filters calibration */
 402         regs[R_EB20]  |= 0x20;
 403         tda18271_write_regs(fe, R_EB20, 1);
 404
 405         msleep(60); /* calibration */
 406
 407         /* --------------------------------------------------------------- */
 408
 409         /* set CAL mode to normal */
 410         regs[R_EP4]  &= ~0x03;
 411
 412         /* switch on agc1 */
 413         regs[R_EP3]  &= ~0x40; /* sm_lt = 0 */
 414
 415         regs[R_EB18] &= ~0x03; /* set agc1_gain to  6 dB */
 416         tda18271_write_regs(fe, R_EB18, 1);
 417
 418         tda18271_write_regs(fe, R_EP3, 2);
 419
 420         /* synchronization */
 421         tda18271_write_regs(fe, R_EP1, 1);
 422
 423         /* get calibration result */
 424         tda18271_read_extended(fe);
 425
 426         return regs[R_EB14];
 427 }
 428
 429 static int tda18271_powerscan(struct dvb_frontend *fe,
 430                               u32 *freq_in, u32 *freq_out)
 431 {
 432         struct tda18271_priv *priv = fe->tuner_priv;
 433         unsigned char *regs = priv->tda18271_regs;
 434         int sgn, bcal, count, wait, ret;
 435         u8 cid_target;
 436         u16 count_limit;
 437         u32 freq;
 438
 439         freq = *freq_in;
 440
 441         tda18271_calc_rf_band(fe, &freq);
 442         tda18271_calc_rf_cal(fe, &freq);
 443         tda18271_calc_gain_taper(fe, &freq);
 444         tda18271_lookup_cid_target(fe, &freq, &cid_target, &count_limit);
 445
 446         tda18271_write_regs(fe, R_EP2, 1);
 447         tda18271_write_regs(fe, R_EB14, 1);
 448
 449         /* downconvert frequency */
 450         freq += 1000000;
 451
 452         tda18271_calc_main_pll(fe, freq);
 453         tda18271_write_regs(fe, R_MPD, 4);
 454
 455         msleep(5); /* pll locking */
 456
 457         /* detection mode */
 458         regs[R_EP4]  &= ~0x03;
 459         regs[R_EP4]  |= 0x01;
 460         tda18271_write_regs(fe, R_EP4, 1);
 461
 462         /* launch power detection measurement */
 463         tda18271_write_regs(fe, R_EP2, 1);
 464
 465         /* read power detection info, stored in EB10 */
 466         ret = tda18271_read_extended(fe);
 467         if (tda_fail(ret))
 468                 return ret;
 469
 470         /* algorithm initialization */
 471         sgn = 1;
 472         *freq_out = *freq_in;
 473         bcal = 0;
 474         count = 0;
 475         wait = false;
 476
 477         while ((regs[R_EB10] & 0x3f) < cid_target) {
 478                 /* downconvert updated freq to 1 MHz */
 479                 freq = *freq_in + (sgn * count) + 1000000;
 480
 481                 tda18271_calc_main_pll(fe, freq);
 482                 tda18271_write_regs(fe, R_MPD, 4);
 483
 484                 if (wait) {
 485                         msleep(5); /* pll locking */
 486                         wait = false;
 487                 } else
 488                         udelay(100); /* pll locking */
 489
 490                 /* launch power detection measurement */
 491                 tda18271_write_regs(fe, R_EP2, 1);
 492
 493                 /* read power detection info, stored in EB10 */
 494                 ret = tda18271_read_extended(fe);
 495                 if (tda_fail(ret))
 496                         return ret;
 497
 498                 count += 200;
 499
 500                 if (count <= count_limit)
 501                         continue;
 502
 503                 if (sgn <= 0)
 504                         break;
 505
 506                 sgn = -1 * sgn;
 507                 count = 200;
 508                 wait = true;
 509         }
 510
 511         if ((regs[R_EB10] & 0x3f) >= cid_target) {
 512                 bcal = 1;
 513                 *freq_out = freq - 1000000;
 514         } else
 515                 bcal = 0;
 516
 517         tda_cal("bcal = %d, freq_in = %d, freq_out = %d (freq = %d)\n",
 518                 bcal, *freq_in, *freq_out, freq);
 519
 520         return bcal;
 521 }
 522
 523 static int tda18271_powerscan_init(struct dvb_frontend *fe)
 524 {
 525         struct tda18271_priv *priv = fe->tuner_priv;
 526         unsigned char *regs = priv->tda18271_regs;
 527         int ret;
 528
 529         /* set standard to digital */
 530         regs[R_EP3]  &= ~0x1f; /* clear std bits */
 531         regs[R_EP3]  |= 0x12;
 532
 533         /* set cal mode to normal */
 534         regs[R_EP4]  &= ~0x03;
 535
 536         /* update IF output level */
 537         regs[R_EP4]  &= ~0x1c; /* clear if level bits */
 538
 539         ret = tda18271_write_regs(fe, R_EP3, 2);
 540         if (tda_fail(ret))
 541                 goto fail;
 542
 543         regs[R_EB18] &= ~0x03; /* set agc1_gain to   6 dB */
 544         ret = tda18271_write_regs(fe, R_EB18, 1);
 545         if (tda_fail(ret))
 546                 goto fail;
 547
 548         regs[R_EB21] &= ~0x03; /* set agc2_gain to -15 dB */
 549
 550         /* 1.5 MHz low pass filter */
 551         regs[R_EB23] |= 0x04; /* forcelp_fc2_en = 1 */
 552         regs[R_EB23] |= 0x02; /* lp_fc[2] = 1 */
 553
 554         ret = tda18271_write_regs(fe, R_EB21, 3);
 555 fail:
 556         return ret;
 557 }
 558
 559 static int tda18271_rf_tracking_filters_init(struct dvb_frontend *fe, u32 freq)
 560 {
 561         struct tda18271_priv *priv = fe->tuner_priv;
 562         struct tda18271_rf_tracking_filter_cal *map = priv->rf_cal_state;
 563         unsigned char *regs = priv->tda18271_regs;
 564         int bcal, rf, i;
 565         s32 divisor, dividend;
 566 #define RF1 0
 567 #define RF2 1
 568 #define RF3 2
 569         u32 rf_default[3];
 570         u32 rf_freq[3];
 571         s32 prog_cal[3];
 572         s32 prog_tab[3];
 573
 574         i = tda18271_lookup_rf_band(fe, &freq, NULL);
 575
 576         if (tda_fail(i))
 577                 return i;
 578
 579         rf_default[RF1] = 1000 * map[i].rf1_def;
 580         rf_default[RF2] = 1000 * map[i].rf2_def;
 581         rf_default[RF3] = 1000 * map[i].rf3_def;
 582
 583         for (rf = RF1; rf <= RF3; rf++) {
 584                 if (0 == rf_default[rf])
 585                         return 0;
 586                 tda_cal("freq = %d, rf = %d\n", freq, rf);
 587
 588                 /* look for optimized calibration frequency */
 589                 bcal = tda18271_powerscan(fe, &rf_default[rf], &rf_freq[rf]);
 590                 if (tda_fail(bcal))
 591                         return bcal;
 592
 593                 tda18271_calc_rf_cal(fe, &rf_freq[rf]);
 594                 prog_tab[rf] = (s32)regs[R_EB14];
 595
 596                 if (1 == bcal)
 597                         prog_cal[rf] =
 598                                 (s32)tda18271_calibrate_rf(fe, rf_freq[rf]);
 599                 else
 600                         prog_cal[rf] = prog_tab[rf];
 601
 602                 switch (rf) {
 603                 case RF1:
 604                         map[i].rf_a1 = 0;
 605                         map[i].rf_b1 = (prog_cal[RF1] - prog_tab[RF1]);
 606                         map[i].rf1   = rf_freq[RF1] / 1000;
 607                         break;
 608                 case RF2:
 609                         dividend = (prog_cal[RF2] - prog_tab[RF2] -
 610                                     prog_cal[RF1] + prog_tab[RF1]);
 611                         divisor = (s32)(rf_freq[RF2] - rf_freq[RF1]) / 1000;
 612                         map[i].rf_a1 = (dividend / divisor);
 613                         map[i].rf2   = rf_freq[RF2] / 1000;
 614                         break;
 615                 case RF3:
 616                         dividend = (prog_cal[RF3] - prog_tab[RF3] -
 617                                     prog_cal[RF2] + prog_tab[RF2]);
 618                         divisor = (s32)(rf_freq[RF3] - rf_freq[RF2]) / 1000;
 619                         map[i].rf_a2 = (dividend / divisor);
 620                         map[i].rf_b2 = (prog_cal[RF2] - prog_tab[RF2]);
 621                         map[i].rf3   = rf_freq[RF3] / 1000;
 622                         break;
 623                 default:
 624                         BUG();
 625                 }
 626         }
 627
 628         return 0;
 629 }
 630
 631 static int tda18271_calc_rf_filter_curve(struct dvb_frontend *fe)
 632 {
 633         struct tda18271_priv *priv = fe->tuner_priv;
 634         unsigned int i;
 635         int ret;
 636
 637         tda_info("performing RF tracking filter calibration\n");
 638
 639         /* wait for die temperature stabilization */
 640         msleep(200);
 641
 642         ret = tda18271_powerscan_init(fe);
 643         if (tda_fail(ret))
 644                 goto fail;
 645
 646         /* rf band calibration */
 647         for (i = 0; priv->rf_cal_state[i].rfmax != 0; i++) {
 648                 ret =
 649                 tda18271_rf_tracking_filters_init(fe, 1000 *
 650                                                   priv->rf_cal_state[i].rfmax);
 651                 if (tda_fail(ret))
 652                         goto fail;
 653         }
 654
 655         priv->tm_rfcal = tda18271_read_thermometer(fe);
 656 fail:
 657         return ret;
 658 }
 659
 660 /* ------------------------------------------------------------------ */
 661
 662 static int tda18271c2_rf_cal_init(struct dvb_frontend *fe)
 663 {
 664         struct tda18271_priv *priv = fe->tuner_priv;
 665         unsigned char *regs = priv->tda18271_regs;
 666         int ret;
 667
 668         /* test RF_CAL_OK to see if we need init */
 669         if ((regs[R_EP1] & 0x10) == 0)
 670                 priv->cal_initialized = false;
 671
 672         if (priv->cal_initialized)
 673                 return 0;
 674
 675         ret = tda18271_calc_rf_filter_curve(fe);
 676         if (tda_fail(ret))
 677                 goto fail;
 678
 679         ret = tda18271_por(fe);
 680         if (tda_fail(ret))
 681                 goto fail;
 682
 683         tda_info("RF tracking filter calibration complete\n");
 684
 685         priv->cal_initialized = true;
 686         goto end;
 687 fail:
 688         tda_info("RF tracking filter calibration failed!\n");
 689 end:
 690         return ret;
 691 }
 692
 693 static int tda18271c1_rf_tracking_filter_calibration(struct dvb_frontend *fe,
 694                                                      u32 freq, u32 bw)
 695 {
 696         struct tda18271_priv *priv = fe->tuner_priv;
 697         unsigned char *regs = priv->tda18271_regs;
 698         int ret;
 699         u32 N = 0;
 700
 701         /* calculate bp filter */
 702         tda18271_calc_bp_filter(fe, &freq);
 703         tda18271_write_regs(fe, R_EP1, 1);
 704
 705         regs[R_EB4]  &= 0x07;
 706         regs[R_EB4]  |= 0x60;
 707         tda18271_write_regs(fe, R_EB4, 1);
 708
 709         regs[R_EB7]   = 0x60;
 710         tda18271_write_regs(fe, R_EB7, 1);
 711
 712         regs[R_EB14]  = 0x00;
 713         tda18271_write_regs(fe, R_EB14, 1);
 714
 715         regs[R_EB20]  = 0xcc;
 716         tda18271_write_regs(fe, R_EB20, 1);
 717
 718         /* set cal mode to RF tracking filter calibration */
 719         regs[R_EP4]  |= 0x03;
 720
 721         /* calculate cal pll */
 722
 723         switch (priv->mode) {
 724         case TDA18271_ANALOG:
 725                 N = freq - 1250000;
 726                 break;
 727         case TDA18271_DIGITAL:
 728                 N = freq + bw / 2;
 729                 break;
 730         }
 731
 732         tda18271_calc_cal_pll(fe, N);
 733
 734         /* calculate main pll */
 735
 736         switch (priv->mode) {
 737         case TDA18271_ANALOG:
 738                 N = freq - 250000;
 739                 break;
 740         case TDA18271_DIGITAL:
 741                 N = freq + bw / 2 + 1000000;
 742                 break;
 743         }
 744
 745         tda18271_calc_main_pll(fe, N);
 746
 747         ret = tda18271_write_regs(fe, R_EP3, 11);
 748         if (tda_fail(ret))
 749                 return ret;
 750
 751         msleep(5); /* RF tracking filter calibration initialization */
 752
 753         /* search for K,M,CO for RF calibration */
 754         tda18271_calc_km(fe, &freq);
 755         tda18271_write_regs(fe, R_EB13, 1);
 756
 757         /* search for rf band */
 758         tda18271_calc_rf_band(fe, &freq);
 759
 760         /* search for gain taper */
 761         tda18271_calc_gain_taper(fe, &freq);
 762
 763         tda18271_write_regs(fe, R_EP2, 1);
 764         tda18271_write_regs(fe, R_EP1, 1);
 765         tda18271_write_regs(fe, R_EP2, 1);
 766         tda18271_write_regs(fe, R_EP1, 1);
 767
 768         regs[R_EB4]  &= 0x07;
 769         regs[R_EB4]  |= 0x40;
 770         tda18271_write_regs(fe, R_EB4, 1);
 771
 772         regs[R_EB7]   = 0x40;
 773         tda18271_write_regs(fe, R_EB7, 1);
 774         msleep(10); /* pll locking */
 775
 776         regs[R_EB20]  = 0xec;
 777         tda18271_write_regs(fe, R_EB20, 1);
 778         msleep(60); /* RF tracking filter calibration completion */
 779
 780         regs[R_EP4]  &= ~0x03; /* set cal mode to normal */
 781         tda18271_write_regs(fe, R_EP4, 1);
 782
 783         tda18271_write_regs(fe, R_EP1, 1);
 784
 785         /* RF tracking filter correction for VHF_Low band */
 786         if (0 == tda18271_calc_rf_cal(fe, &freq))
 787                 tda18271_write_regs(fe, R_EB14, 1);
 788
 789         return 0;
 790 }
 791
 792 /* ------------------------------------------------------------------ */
 793
 794 static int tda18271_ir_cal_init(struct dvb_frontend *fe)
 795 {
 796         struct tda18271_priv *priv = fe->tuner_priv;
 797         unsigned char *regs = priv->tda18271_regs;
 798         int ret;
 799
 800         ret = tda18271_read_regs(fe);
 801         if (tda_fail(ret))
 802                 goto fail;
 803
 804         /* test IR_CAL_OK to see if we need init */
 805         if ((regs[R_EP1] & 0x08) == 0)
 806                 ret = tda18271_init_regs(fe);
 807 fail:
 808         return ret;
 809 }
 810
 811 static int tda18271_init(struct dvb_frontend *fe)
 812 {
 813         struct tda18271_priv *priv = fe->tuner_priv;
 814         int ret;
 815
 816         mutex_lock(&priv->lock);
 817
 818         /* full power up */
 819         ret = tda18271_set_standby_mode(fe, 0, 0, 0);
 820         if (tda_fail(ret))
 821                 goto fail;
 822
 823         /* initialization */
 824         ret = tda18271_ir_cal_init(fe);
 825         if (tda_fail(ret))
 826                 goto fail;
 827
 828         if (priv->id == TDA18271HDC2)
 829                 tda18271c2_rf_cal_init(fe);
 830 fail:
 831         mutex_unlock(&priv->lock);
 832
 833         return ret;
 834 }
 835
 836 static int tda18271_sleep(struct dvb_frontend *fe)
 837 {
 838         struct tda18271_priv *priv = fe->tuner_priv;
 839         int ret;
 840
 841         mutex_lock(&priv->lock);
 842
 843         /* enter standby mode, with required output features enabled */
 844         ret = tda18271_toggle_output(fe, 1);
 845
 846         mutex_unlock(&priv->lock);
 847
 848         return ret;
 849 }
 850
 851 /* ------------------------------------------------------------------ */
 852
 853 static int tda18271_agc(struct dvb_frontend *fe)
 854 {
 855         struct tda18271_priv *priv = fe->tuner_priv;
 856         int ret = 0;
 857
 858         switch (priv->config) {
 859         case TDA8290_LNA_OFF:
 860                 /* no external agc configuration required */
 861                 if (tda18271_debug & DBG_ADV)
 862                         tda_dbg("no agc configuration provided\n");
 863                 break;
 864         case TDA8290_LNA_ON_BRIDGE:
 865                 /* switch with GPIO of saa713x */
 866                 tda_dbg("invoking callback\n");
 867                 if (fe->callback)
 868                         ret = fe->callback(priv->i2c_props.adap->algo_data,
 869                                            DVB_FRONTEND_COMPONENT_TUNER,
 870                                            TDA18271_CALLBACK_CMD_AGC_ENABLE,
 871                                            priv->mode);
 872                 break;
 873         case TDA8290_LNA_GP0_HIGH_ON:
 874         case TDA8290_LNA_GP0_HIGH_OFF:
 875         default:
 876                 /* n/a - currently not supported */
 877                 tda_err("unsupported configuration: %d\n", priv->config);
 878                 ret = -EINVAL;
 879                 break;
 880         }
 881         return ret;
 882 }
 883
 884 static int tda18271_tune(struct dvb_frontend *fe,
 885                          struct tda18271_std_map_item *map, u32 freq, u32 bw)
 886 {
 887         struct tda18271_priv *priv = fe->tuner_priv;
 888         int ret;
 889
 890         tda_dbg("freq = %d, ifc = %d, bw = %d, agc_mode = %d, std = %d\n",
 891                 freq, map->if_freq, bw, map->agc_mode, map->std);
 892
 893         ret = tda18271_agc(fe);
 894         if (tda_fail(ret))
 895                 tda_warn("failed to configure agc\n");
 896
 897         ret = tda18271_init(fe);
 898         if (tda_fail(ret))
 899                 goto fail;
 900
 901         mutex_lock(&priv->lock);
 902
 903         switch (priv->id) {
 904         case TDA18271HDC1:
 905                 tda18271c1_rf_tracking_filter_calibration(fe, freq, bw);
 906                 break;
 907         case TDA18271HDC2:
 908                 tda18271c2_rf_tracking_filters_correction(fe, freq);
 909                 break;
 910         }
 911         ret = tda18271_channel_configuration(fe, map, freq, bw);
 912
 913         mutex_unlock(&priv->lock);
 914 fail:
 915         return ret;
 916 }
 917
 918 /* ------------------------------------------------------------------ */
 919
 920 static int tda18271_set_params(struct dvb_frontend *fe)
 921 {
 922         struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 923         u32 delsys = c->delivery_system;
 924         u32 bw = c->bandwidth_hz;
 925         u32 freq = c->frequency;
 926         struct tda18271_priv *priv = fe->tuner_priv;
 927         struct tda18271_std_map *std_map = &priv->std;
 928         struct tda18271_std_map_item *map;
 929         int ret;
 930
 931         priv->mode = TDA18271_DIGITAL;
 932
 933         switch (delsys) {
 934         case SYS_ATSC:
 935                 map = &std_map->atsc_6;
 936                 bw = 6000000;
 937                 break;
 938         case SYS_ISDBT:
 939         case SYS_DVBT:
 940         case SYS_DVBT2:
 941                 if (bw <= 6000000) {
 942                         map = &std_map->dvbt_6;
 943                 } else if (bw <= 7000000) {
 944                         map = &std_map->dvbt_7;
 945                 } else {
 946                         map = &std_map->dvbt_8;
 947                 }
 948                 break;
 949         case SYS_DVBC_ANNEX_B:
 950                 bw = 6000000;
 951                 /* fall through */
 952         case SYS_DVBC_ANNEX_A:
 953         case SYS_DVBC_ANNEX_C:
 954                 if (bw <= 6000000) {
 955                         map = &std_map->qam_6;
 956                 } else if (bw <= 7000000) {
 957                         map = &std_map->qam_7;
 958                 } else {
 959                         map = &std_map->qam_8;
 960                 }
 961                 break;
 962         default:
 963                 tda_warn("modulation type not supported!\n");
 964                 return -EINVAL;
 965         }
 966
 967         /* When tuning digital, the analog demod must be tri-stated */
 968         if (fe->ops.analog_ops.standby)
 969                 fe->ops.analog_ops.standby(fe);
 970
 971         ret = tda18271_tune(fe, map, freq, bw);
 972
 973         if (tda_fail(ret))
 974                 goto fail;
 975
 976         priv->if_freq   = map->if_freq;
 977         priv->frequency = freq;
 978         priv->bandwidth = bw;
 979 fail:
 980         return ret;
 981 }
 982
 983 static int tda18271_set_analog_params(struct dvb_frontend *fe,
 984                                       struct analog_parameters *params)
 985 {
 986         struct tda18271_priv *priv = fe->tuner_priv;
 987         struct tda18271_std_map *std_map = &priv->std;
 988         struct tda18271_std_map_item *map;
 989         char *mode;
 990         int ret;
 991         u32 freq = params->frequency * 125 *
 992                 ((params->mode == V4L2_TUNER_RADIO) ? 1 : 1000) / 2;
 993
 994         priv->mode = TDA18271_ANALOG;
 995
 996         if (params->mode == V4L2_TUNER_RADIO) {
 997                 map = &std_map->fm_radio;
 998                 mode = "fm";
 999         } else if (params->std & V4L2_STD_MN) {
1000                 map = &std_map->atv_mn;
1001                 mode = "MN";
1002         } else if (params->std & V4L2_STD_B) {
1003                 map = &std_map->atv_b;
1004                 mode = "B";
1005         } else if (params->std & V4L2_STD_GH) {
1006                 map = &std_map->atv_gh;
1007                 mode = "GH";
1008         } else if (params->std & V4L2_STD_PAL_I) {
1009                 map = &std_map->atv_i;
1010                 mode = "I";
1011         } else if (params->std & V4L2_STD_DK) {
1012                 map = &std_map->atv_dk;
1013                 mode = "DK";
1014         } else if (params->std & V4L2_STD_SECAM_L) {
1015                 map = &std_map->atv_l;
1016                 mode = "L";
1017         } else if (params->std & V4L2_STD_SECAM_LC) {
1018                 map = &std_map->atv_lc;
1019                 mode = "L'";
1020         } else {
1021                 map = &std_map->atv_i;
1022                 mode = "xx";
1023         }
1024
1025         tda_dbg("setting tda18271 to system %s\n", mode);
1026
1027         ret = tda18271_tune(fe, map, freq, 0);
1028
1029         if (tda_fail(ret))
1030                 goto fail;
1031
1032         priv->if_freq   = map->if_freq;
1033         priv->frequency = freq;
1034         priv->bandwidth = 0;
1035 fail:
1036         return ret;
1037 }
1038
1039 static void tda18271_release(struct dvb_frontend *fe)
1040 {
1041         struct tda18271_priv *priv = fe->tuner_priv;
1042
1043         mutex_lock(&tda18271_list_mutex);
1044
1045         if (priv)
1046                 hybrid_tuner_release_state(priv);
1047
1048         mutex_unlock(&tda18271_list_mutex);
1049
1050         fe->tuner_priv = NULL;
1051 }
1052
1053 static int tda18271_get_frequency(struct dvb_frontend *fe, u32 *frequency)
1054 {
1055         struct tda18271_priv *priv = fe->tuner_priv;
1056         *frequency = priv->frequency;
1057         return 0;
1058 }
1059
1060 static int tda18271_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
1061 {
1062         struct tda18271_priv *priv = fe->tuner_priv;
1063         *bandwidth = priv->bandwidth;
1064         return 0;
1065 }
1066
1067 static int tda18271_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
1068 {
1069         struct tda18271_priv *priv = fe->tuner_priv;
1070         *frequency = (u32)priv->if_freq * 1000;
1071         return 0;
1072 }
1073
1074 /* ------------------------------------------------------------------ */
1075
1076 #define tda18271_update_std(std_cfg, name) do {                         \
1077         if (map->std_cfg.if_freq +                                      \
1078                 map->std_cfg.agc_mode + map->std_cfg.std +              \
1079                 map->std_cfg.if_lvl + map->std_cfg.rfagc_top > 0) {     \
1080                 tda_dbg("Using custom std config for %s\n", name);      \
1081                 memcpy(&std->std_cfg, &map->std_cfg,                    \
1082                         sizeof(struct tda18271_std_map_item));          \
1083         } } while (0)
1084
1085 #define tda18271_dump_std_item(std_cfg, name) do {                      \
1086         tda_dbg("(%s) if_freq = %d, agc_mode = %d, std = %d, "          \
1087                 "if_lvl = %d, rfagc_top = 0x%02x\n",                    \
1088                 name, std->std_cfg.if_freq,                             \
1089                 std->std_cfg.agc_mode, std->std_cfg.std,                \
1090                 std->std_cfg.if_lvl, std->std_cfg.rfagc_top);           \
1091         } while (0)
1092
1093 static int tda18271_dump_std_map(struct dvb_frontend *fe)
1094 {
1095         struct tda18271_priv *priv = fe->tuner_priv;
1096         struct tda18271_std_map *std = &priv->std;
1097
1098         tda_dbg("========== STANDARD MAP SETTINGS ==========\n");
1099         tda18271_dump_std_item(fm_radio, "  fm  ");
1100         tda18271_dump_std_item(atv_b,  "atv b ");
1101         tda18271_dump_std_item(atv_dk, "atv dk");
1102         tda18271_dump_std_item(atv_gh, "atv gh");
1103         tda18271_dump_std_item(atv_i,  "atv i ");
1104         tda18271_dump_std_item(atv_l,  "atv l ");
1105         tda18271_dump_std_item(atv_lc, "atv l'");
1106         tda18271_dump_std_item(atv_mn, "atv mn");
1107         tda18271_dump_std_item(atsc_6, "atsc 6");
1108         tda18271_dump_std_item(dvbt_6, "dvbt 6");
1109         tda18271_dump_std_item(dvbt_7, "dvbt 7");
1110         tda18271_dump_std_item(dvbt_8, "dvbt 8");
1111         tda18271_dump_std_item(qam_6,  "qam 6 ");
1112         tda18271_dump_std_item(qam_7,  "qam 7 ");
1113         tda18271_dump_std_item(qam_8,  "qam 8 ");
1114
1115         return 0;
1116 }
1117
1118 static int tda18271_update_std_map(struct dvb_frontend *fe,
1119                                    struct tda18271_std_map *map)
1120 {
1121         struct tda18271_priv *priv = fe->tuner_priv;
1122         struct tda18271_std_map *std = &priv->std;
1123
1124         if (!map)
1125                 return -EINVAL;
1126
1127         tda18271_update_std(fm_radio, "fm");
1128         tda18271_update_std(atv_b,  "atv b");
1129         tda18271_update_std(atv_dk, "atv dk");
1130         tda18271_update_std(atv_gh, "atv gh");
1131         tda18271_update_std(atv_i,  "atv i");
1132         tda18271_update_std(atv_l,  "atv l");
1133         tda18271_update_std(atv_lc, "atv l'");
1134         tda18271_update_std(atv_mn, "atv mn");
1135         tda18271_update_std(atsc_6, "atsc 6");
1136         tda18271_update_std(dvbt_6, "dvbt 6");
1137         tda18271_update_std(dvbt_7, "dvbt 7");
1138         tda18271_update_std(dvbt_8, "dvbt 8");
1139         tda18271_update_std(qam_6,  "qam 6");
1140         tda18271_update_std(qam_7,  "qam 7");
1141         tda18271_update_std(qam_8,  "qam 8");
1142
1143         return 0;
1144 }
1145
1146 static int tda18271_get_id(struct dvb_frontend *fe)
1147 {
1148         struct tda18271_priv *priv = fe->tuner_priv;
1149         unsigned char *regs = priv->tda18271_regs;
1150         char *name;
1151         int ret;
1152
1153         mutex_lock(&priv->lock);
1154         ret = tda18271_read_regs(fe);
1155         mutex_unlock(&priv->lock);
1156
1157         if (ret) {
1158                 tda_info("Error reading device ID @ %d-%04x, bailing out.\n",
1159                          i2c_adapter_id(priv->i2c_props.adap),
1160                          priv->i2c_props.addr);
1161                 return -EIO;
1162         }
1163
1164         switch (regs[R_ID] & 0x7f) {
1165         case 3:
1166                 name = "TDA18271HD/C1";
1167                 priv->id = TDA18271HDC1;
1168                 break;
1169         case 4:
1170                 name = "TDA18271HD/C2";
1171                 priv->id = TDA18271HDC2;
1172                 break;
1173         default:
1174                 tda_info("Unknown device (%i) detected @ %d-%04x, device not supported.\n",
1175                          regs[R_ID], i2c_adapter_id(priv->i2c_props.adap),
1176                          priv->i2c_props.addr);
1177                 return -EINVAL;
1178         }
1179
1180         tda_info("%s detected @ %d-%04x\n", name,
1181                  i2c_adapter_id(priv->i2c_props.adap), priv->i2c_props.addr);
1182
1183         return 0;
1184 }
1185
1186 static int tda18271_setup_configuration(struct dvb_frontend *fe,
1187                                         struct tda18271_config *cfg)
1188 {
1189         struct tda18271_priv *priv = fe->tuner_priv;
1190
1191         priv->gate = (cfg) ? cfg->gate : TDA18271_GATE_AUTO;
1192         priv->role = (cfg) ? cfg->role : TDA18271_MASTER;
1193         priv->config = (cfg) ? cfg->config : 0;
1194         priv->small_i2c = (cfg) ?
1195                 cfg->small_i2c : TDA18271_39_BYTE_CHUNK_INIT;
1196         priv->output_opt = (cfg) ?
1197                 cfg->output_opt : TDA18271_OUTPUT_LT_XT_ON;
1198
1199         return 0;
1200 }
1201
1202 static inline int tda18271_need_cal_on_startup(struct tda18271_config *cfg)
1203 {
1204         /* tda18271_cal_on_startup == -1 when cal module option is unset */
1205         return ((tda18271_cal_on_startup == -1) ?
1206                 /* honor configuration setting */
1207                 ((cfg) && (cfg->rf_cal_on_startup)) :
1208                 /* module option overrides configuration setting */
1209                 (tda18271_cal_on_startup)) ? 1 : 0;
1210 }
1211
1212 static int tda18271_set_config(struct dvb_frontend *fe, void *priv_cfg)
1213 {
1214         struct tda18271_config *cfg = (struct tda18271_config *) priv_cfg;
1215
1216         tda18271_setup_configuration(fe, cfg);
1217
1218         if (tda18271_need_cal_on_startup(cfg))
1219                 tda18271_init(fe);
1220
1221         /* override default std map with values in config struct */
1222         if ((cfg) && (cfg->std_map))
1223                 tda18271_update_std_map(fe, cfg->std_map);
1224
1225         return 0;
1226 }
1227
1228 static const struct dvb_tuner_ops tda18271_tuner_ops = {
1229         .info = {
1230                 .name = "NXP TDA18271HD",
1231                 .frequency_min_hz  =  45 * MHz,
1232                 .frequency_max_hz  = 864 * MHz,
1233                 .frequency_step_hz = 62500
1234         },
1235         .init              = tda18271_init,
1236         .sleep             = tda18271_sleep,
1237         .set_params        = tda18271_set_params,
1238         .set_analog_params = tda18271_set_analog_params,
1239         .release           = tda18271_release,
1240         .set_config        = tda18271_set_config,
1241         .get_frequency     = tda18271_get_frequency,
1242         .get_bandwidth     = tda18271_get_bandwidth,
1243         .get_if_frequency  = tda18271_get_if_frequency,
1244 };
1245
1246 struct dvb_frontend *tda18271_attach(struct dvb_frontend *fe, u8 addr,
1247                                      struct i2c_adapter *i2c,
1248                                      struct tda18271_config *cfg)
1249 {
1250         struct tda18271_priv *priv = NULL;
1251         int instance, ret;
1252
1253         mutex_lock(&tda18271_list_mutex);
1254
1255         instance = hybrid_tuner_request_state(struct tda18271_priv, priv,
1256                                               hybrid_tuner_instance_list,
1257                                               i2c, addr, "tda18271");
1258         switch (instance) {
1259         case 0:
1260                 goto fail;
1261         case 1:
1262                 /* new tuner instance */
1263                 fe->tuner_priv = priv;
1264
1265                 tda18271_setup_configuration(fe, cfg);
1266
1267                 priv->cal_initialized = false;
1268                 mutex_init(&priv->lock);
1269
1270                 ret = tda18271_get_id(fe);
1271                 if (tda_fail(ret))
1272                         goto fail;
1273
1274                 ret = tda18271_assign_map_layout(fe);
1275                 if (tda_fail(ret))
1276                         goto fail;
1277
1278                 /* if delay_cal is set, delay IR & RF calibration until init()
1279                  * module option 'cal' overrides this delay */
1280                 if ((cfg->delay_cal) && (!tda18271_need_cal_on_startup(cfg)))
1281                         break;
1282
1283                 mutex_lock(&priv->lock);
1284                 tda18271_init_regs(fe);
1285
1286                 if ((tda18271_need_cal_on_startup(cfg)) &&
1287                     (priv->id == TDA18271HDC2))
1288                         tda18271c2_rf_cal_init(fe);
1289
1290                 /* enter standby mode, with required output features enabled */
1291                 ret = tda18271_toggle_output(fe, 1);
1292                 tda_fail(ret);
1293
1294                 mutex_unlock(&priv->lock);
1295                 break;
1296         default:
1297                 /* existing tuner instance */
1298                 fe->tuner_priv = priv;
1299
1300                 /* allow dvb driver to override configuration settings */
1301                 if (cfg) {
1302                         if (cfg->gate != TDA18271_GATE_ANALOG)
1303                                 priv->gate = cfg->gate;
1304                         if (cfg->role)
1305                                 priv->role = cfg->role;
1306                         if (cfg->config)
1307                                 priv->config = cfg->config;
1308                         if (cfg->small_i2c)
1309                                 priv->small_i2c = cfg->small_i2c;
1310                         if (cfg->output_opt)
1311                                 priv->output_opt = cfg->output_opt;
1312                         if (cfg->std_map)
1313                                 tda18271_update_std_map(fe, cfg->std_map);
1314                 }
1315                 if (tda18271_need_cal_on_startup(cfg))
1316                         tda18271_init(fe);
1317                 break;
1318         }
1319
1320         /* override default std map with values in config struct */
1321         if ((cfg) && (cfg->std_map))
1322                 tda18271_update_std_map(fe, cfg->std_map);
1323
1324         mutex_unlock(&tda18271_list_mutex);
1325
1326         memcpy(&fe->ops.tuner_ops, &tda18271_tuner_ops,
1327                sizeof(struct dvb_tuner_ops));
1328
1329         if (tda18271_debug & (DBG_MAP | DBG_ADV))
1330                 tda18271_dump_std_map(fe);
1331
1332         return fe;
1333 fail:
1334         mutex_unlock(&tda18271_list_mutex);
1335
1336         tda18271_release(fe);
1337         return NULL;
1338 }
1339 EXPORT_SYMBOL_GPL(tda18271_attach);
1340 MODULE_DESCRIPTION("NXP TDA18271HD analog / digital tuner driver");
1341 MODULE_AUTHOR("Michael Krufky <mkrufky@linuxtv.org>");
1342 MODULE_LICENSE("GPL");
1343 MODULE_VERSION("0.4");