drivers/media/tuners/tda18271-fe.c

   1 /*
   2     tda18271-fe.c - driver for the Philips / NXP TDA18271 silicon tuner
   3
   4     Copyright (C) 2007, 2008 Michael Krufky <mkrufky@linuxtv.org>
   5
   6     This program is free software; you can redistribute it and/or modify
   7     it under the terms of the GNU General Public License as published by
   8     the Free Software Foundation; either version 2 of the License, or
   9     (at your option) any later version.
  10
  11     This program is distributed in the hope that it will be useful,
  12     but WITHOUT ANY WARRANTY; without even the implied warranty of
  13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14     GNU General Public License for more details.
  15
  16     You should have received a copy of the GNU General Public License
  17     along with this program; if not, write to the Free Software
  18     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19 */
  20
  21 #include <linux/delay.h>
  22 #include <linux/videodev2.h>
  23 #include "tda18271-priv.h"
  24
  25 int tda18271_debug;
  26 module_param_named(debug, tda18271_debug, int, 0644);
  27 MODULE_PARM_DESC(debug, "set debug level "
  28                  "(info=1, map=2, reg=4, adv=8, cal=16 (or-able))");
  29
  30 static int tda18271_cal_on_startup = -1;
  31 module_param_named(cal, tda18271_cal_on_startup, int, 0644);
  32 MODULE_PARM_DESC(cal, "perform RF tracking filter calibration on startup");
  33
  34 static DEFINE_MUTEX(tda18271_list_mutex);
  35 static LIST_HEAD(hybrid_tuner_instance_list);
  36
  37 /*---------------------------------------------------------------------*/
  38
  39 static int tda18271_toggle_output(struct dvb_frontend *fe, int standby)
  40 {
  41         struct tda18271_priv *priv = fe->tuner_priv;
  42
  43         int ret = tda18271_set_standby_mode(fe, standby ? 1 : 0,
  44                         priv->output_opt & TDA18271_OUTPUT_LT_OFF ? 1 : 0,
  45                         priv->output_opt & TDA18271_OUTPUT_XT_OFF ? 1 : 0);
  46
  47         if (tda_fail(ret))
  48                 goto fail;
  49
  50         tda_dbg("%s mode: xtal oscillator %s, slave tuner loop thru %s\n",
  51                 standby ? "standby" : "active",
  52                 priv->output_opt & TDA18271_OUTPUT_XT_OFF ? "off" : "on",
  53                 priv->output_opt & TDA18271_OUTPUT_LT_OFF ? "off" : "on");
  54 fail:
  55         return ret;
  56 }
  57
  58 /*---------------------------------------------------------------------*/
  59
  60 static inline int charge_pump_source(struct dvb_frontend *fe, int force)
  61 {
  62         struct tda18271_priv *priv = fe->tuner_priv;
  63         return tda18271_charge_pump_source(fe,
  64                                            (priv->role == TDA18271_SLAVE) ?
  65                                            TDA18271_CAL_PLL :
  66                                            TDA18271_MAIN_PLL, force);
  67 }
  68
  69 static inline void tda18271_set_if_notch(struct dvb_frontend *fe)
  70 {
  71         struct tda18271_priv *priv = fe->tuner_priv;
  72         unsigned char *regs = priv->tda18271_regs;
  73
  74         switch (priv->mode) {
  75         case TDA18271_ANALOG:
  76                 regs[R_MPD]  &= ~0x80; /* IF notch = 0 */
  77                 break;
  78         case TDA18271_DIGITAL:
  79                 regs[R_MPD]  |= 0x80; /* IF notch = 1 */
  80                 break;
  81         }
  82 }
  83
  84 static int tda18271_channel_configuration(struct dvb_frontend *fe,
  85                                           struct tda18271_std_map_item *map,
  86                                           u32 freq, u32 bw)
  87 {
  88         struct tda18271_priv *priv = fe->tuner_priv;
  89         unsigned char *regs = priv->tda18271_regs;
  90         int ret;
  91         u32 N;
  92
  93         /* update TV broadcast parameters */
  94
  95         /* set standard */
  96         regs[R_EP3]  &= ~0x1f; /* clear std bits */
  97         regs[R_EP3]  |= (map->agc_mode << 3) | map->std;
  98
  99         if (priv->id == TDA18271HDC2) {
 100                 /* set rfagc to high speed mode */
 101                 regs[R_EP3] &= ~0x04;
 102         }
 103
 104         /* set cal mode to normal */
 105         regs[R_EP4]  &= ~0x03;
 106
 107         /* update IF output level */
 108         regs[R_EP4]  &= ~0x1c; /* clear if level bits */
 109         regs[R_EP4]  |= (map->if_lvl << 2);
 110
 111         /* update FM_RFn */
 112         regs[R_EP4]  &= ~0x80;
 113         regs[R_EP4]  |= map->fm_rfn << 7;
 114
 115         /* update rf top / if top */
 116         regs[R_EB22]  = 0x00;
 117         regs[R_EB22] |= map->rfagc_top;
 118         ret = tda18271_write_regs(fe, R_EB22, 1);
 119         if (tda_fail(ret))
 120                 goto fail;
 121
 122         /* --------------------------------------------------------------- */
 123
 124         /* disable Power Level Indicator */
 125         regs[R_EP1]  |= 0x40;
 126
 127         /* make sure thermometer is off */
 128         regs[R_TM]   &= ~0x10;
 129
 130         /* frequency dependent parameters */
 131
 132         tda18271_calc_ir_measure(fe, &freq);
 133
 134         tda18271_calc_bp_filter(fe, &freq);
 135
 136         tda18271_calc_rf_band(fe, &freq);
 137
 138         tda18271_calc_gain_taper(fe, &freq);
 139
 140         /* --------------------------------------------------------------- */
 141
 142         /* dual tuner and agc1 extra configuration */
 143
 144         switch (priv->role) {
 145         case TDA18271_MASTER:
 146                 regs[R_EB1]  |= 0x04; /* main vco */
 147                 break;
 148         case TDA18271_SLAVE:
 149                 regs[R_EB1]  &= ~0x04; /* cal vco */
 150                 break;
 151         }
 152
 153         /* agc1 always active */
 154         regs[R_EB1]  &= ~0x02;
 155
 156         /* agc1 has priority on agc2 */
 157         regs[R_EB1]  &= ~0x01;
 158
 159         ret = tda18271_write_regs(fe, R_EB1, 1);
 160         if (tda_fail(ret))
 161                 goto fail;
 162
 163         /* --------------------------------------------------------------- */
 164
 165         N = map->if_freq * 1000 + freq;
 166
 167         switch (priv->role) {
 168         case TDA18271_MASTER:
 169                 tda18271_calc_main_pll(fe, N);
 170                 tda18271_set_if_notch(fe);
 171                 tda18271_write_regs(fe, R_MPD, 4);
 172                 break;
 173         case TDA18271_SLAVE:
 174                 tda18271_calc_cal_pll(fe, N);
 175                 tda18271_write_regs(fe, R_CPD, 4);
 176
 177                 regs[R_MPD] = regs[R_CPD] & 0x7f;
 178                 tda18271_set_if_notch(fe);
 179                 tda18271_write_regs(fe, R_MPD, 1);
 180                 break;
 181         }
 182
 183         ret = tda18271_write_regs(fe, R_TM, 7);
 184         if (tda_fail(ret))
 185                 goto fail;
 186
 187         /* force charge pump source */
 188         charge_pump_source(fe, 1);
 189
 190         msleep(1);
 191
 192         /* return pll to normal operation */
 193         charge_pump_source(fe, 0);
 194
 195         msleep(20);
 196
 197         if (priv->id == TDA18271HDC2) {
 198                 /* set rfagc to normal speed mode */
 199                 if (map->fm_rfn)
 200                         regs[R_EP3] &= ~0x04;
 201                 else
 202                         regs[R_EP3] |= 0x04;
 203                 ret = tda18271_write_regs(fe, R_EP3, 1);
 204         }
 205 fail:
 206         return ret;
 207 }
 208
 209 static int tda18271_read_thermometer(struct dvb_frontend *fe)
 210 {
 211         struct tda18271_priv *priv = fe->tuner_priv;
 212         unsigned char *regs = priv->tda18271_regs;
 213         int tm;
 214
 215         /* switch thermometer on */
 216         regs[R_TM]   |= 0x10;
 217         tda18271_write_regs(fe, R_TM, 1);
 218
 219         /* read thermometer info */
 220         tda18271_read_regs(fe);
 221
 222         if ((((regs[R_TM] & 0x0f) == 0x00) && ((regs[R_TM] & 0x20) == 0x20)) ||
 223             (((regs[R_TM] & 0x0f) == 0x08) && ((regs[R_TM] & 0x20) == 0x00))) {
 224
 225                 if ((regs[R_TM] & 0x20) == 0x20)
 226                         regs[R_TM] &= ~0x20;
 227                 else
 228                         regs[R_TM] |= 0x20;
 229
 230                 tda18271_write_regs(fe, R_TM, 1);
 231
 232                 msleep(10); /* temperature sensing */
 233
 234                 /* read thermometer info */
 235                 tda18271_read_regs(fe);
 236         }
 237
 238         tm = tda18271_lookup_thermometer(fe);
 239
 240         /* switch thermometer off */
 241         regs[R_TM]   &= ~0x10;
 242         tda18271_write_regs(fe, R_TM, 1);
 243
 244         /* set CAL mode to normal */
 245         regs[R_EP4]  &= ~0x03;
 246         tda18271_write_regs(fe, R_EP4, 1);
 247
 248         return tm;
 249 }
 250
 251 /* ------------------------------------------------------------------ */
 252
 253 static int tda18271c2_rf_tracking_filters_correction(struct dvb_frontend *fe,
 254                                                      u32 freq)
 255 {
 256         struct tda18271_priv *priv = fe->tuner_priv;
 257         struct tda18271_rf_tracking_filter_cal *map = priv->rf_cal_state;
 258         unsigned char *regs = priv->tda18271_regs;
 259         int i, ret;
 260         u8 tm_current, dc_over_dt, rf_tab;
 261         s32 rfcal_comp, approx;
 262
 263         /* power up */
 264         ret = tda18271_set_standby_mode(fe, 0, 0, 0);
 265         if (tda_fail(ret))
 266                 goto fail;
 267
 268         /* read die current temperature */
 269         tm_current = tda18271_read_thermometer(fe);
 270
 271         /* frequency dependent parameters */
 272
 273         tda18271_calc_rf_cal(fe, &freq);
 274         rf_tab = regs[R_EB14];
 275
 276         i = tda18271_lookup_rf_band(fe, &freq, NULL);
 277         if (tda_fail(i))
 278                 return i;
 279
 280         if ((0 == map[i].rf3) || (freq / 1000 < map[i].rf2)) {
 281                 approx = map[i].rf_a1 * (s32)(freq / 1000 - map[i].rf1) +
 282                         map[i].rf_b1 + rf_tab;
 283         } else {
 284                 approx = map[i].rf_a2 * (s32)(freq / 1000 - map[i].rf2) +
 285                         map[i].rf_b2 + rf_tab;
 286         }
 287
 288         if (approx < 0)
 289                 approx = 0;
 290         if (approx > 255)
 291                 approx = 255;
 292
 293         tda18271_lookup_map(fe, RF_CAL_DC_OVER_DT, &freq, &dc_over_dt);
 294
 295         /* calculate temperature compensation */
 296         rfcal_comp = dc_over_dt * (s32)(tm_current - priv->tm_rfcal) / 1000;
 297
 298         regs[R_EB14] = (unsigned char)(approx + rfcal_comp);
 299         ret = tda18271_write_regs(fe, R_EB14, 1);
 300 fail:
 301         return ret;
 302 }
 303
 304 static int tda18271_por(struct dvb_frontend *fe)
 305 {
 306         struct tda18271_priv *priv = fe->tuner_priv;
 307         unsigned char *regs = priv->tda18271_regs;
 308         int ret;
 309
 310         /* power up detector 1 */
 311         regs[R_EB12] &= ~0x20;
 312         ret = tda18271_write_regs(fe, R_EB12, 1);
 313         if (tda_fail(ret))
 314                 goto fail;
 315
 316         regs[R_EB18] &= ~0x80; /* turn agc1 loop on */
 317         regs[R_EB18] &= ~0x03; /* set agc1_gain to  6 dB */
 318         ret = tda18271_write_regs(fe, R_EB18, 1);
 319         if (tda_fail(ret))
 320                 goto fail;
 321
 322         regs[R_EB21] |= 0x03; /* set agc2_gain to -6 dB */
 323
 324         /* POR mode */
 325         ret = tda18271_set_standby_mode(fe, 1, 0, 0);
 326         if (tda_fail(ret))
 327                 goto fail;
 328
 329         /* disable 1.5 MHz low pass filter */
 330         regs[R_EB23] &= ~0x04; /* forcelp_fc2_en = 0 */
 331         regs[R_EB23] &= ~0x02; /* XXX: lp_fc[2] = 0 */
 332         ret = tda18271_write_regs(fe, R_EB21, 3);
 333 fail:
 334         return ret;
 335 }
 336
 337 static int tda18271_calibrate_rf(struct dvb_frontend *fe, u32 freq)
 338 {
 339         struct tda18271_priv *priv = fe->tuner_priv;
 340         unsigned char *regs = priv->tda18271_regs;
 341         u32 N;
 342
 343         /* set CAL mode to normal */
 344         regs[R_EP4]  &= ~0x03;
 345         tda18271_write_regs(fe, R_EP4, 1);
 346
 347         /* switch off agc1 */
 348         regs[R_EP3]  |= 0x40; /* sm_lt = 1 */
 349
 350         regs[R_EB18] |= 0x03; /* set agc1_gain to 15 dB */
 351         tda18271_write_regs(fe, R_EB18, 1);
 352
 353         /* frequency dependent parameters */
 354
 355         tda18271_calc_bp_filter(fe, &freq);
 356         tda18271_calc_gain_taper(fe, &freq);
 357         tda18271_calc_rf_band(fe, &freq);
 358         tda18271_calc_km(fe, &freq);
 359
 360         tda18271_write_regs(fe, R_EP1, 3);
 361         tda18271_write_regs(fe, R_EB13, 1);
 362
 363         /* main pll charge pump source */
 364         tda18271_charge_pump_source(fe, TDA18271_MAIN_PLL, 1);
 365
 366         /* cal pll charge pump source */
 367         tda18271_charge_pump_source(fe, TDA18271_CAL_PLL, 1);
 368
 369         /* force dcdc converter to 0 V */
 370         regs[R_EB14] = 0x00;
 371         tda18271_write_regs(fe, R_EB14, 1);
 372
 373         /* disable plls lock */
 374         regs[R_EB20] &= ~0x20;
 375         tda18271_write_regs(fe, R_EB20, 1);
 376
 377         /* set CAL mode to RF tracking filter calibration */
 378         regs[R_EP4]  |= 0x03;
 379         tda18271_write_regs(fe, R_EP4, 2);
 380
 381         /* --------------------------------------------------------------- */
 382
 383         /* set the internal calibration signal */
 384         N = freq;
 385
 386         tda18271_calc_cal_pll(fe, N);
 387         tda18271_write_regs(fe, R_CPD, 4);
 388
 389         /* downconvert internal calibration */
 390         N += 1000000;
 391
 392         tda18271_calc_main_pll(fe, N);
 393         tda18271_write_regs(fe, R_MPD, 4);
 394
 395         msleep(5);
 396
 397         tda18271_write_regs(fe, R_EP2, 1);
 398         tda18271_write_regs(fe, R_EP1, 1);
 399         tda18271_write_regs(fe, R_EP2, 1);
 400         tda18271_write_regs(fe, R_EP1, 1);
 401
 402         /* --------------------------------------------------------------- */
 403
 404         /* normal operation for the main pll */
 405         tda18271_charge_pump_source(fe, TDA18271_MAIN_PLL, 0);
 406
 407         /* normal operation for the cal pll  */
 408         tda18271_charge_pump_source(fe, TDA18271_CAL_PLL, 0);
 409
 410         msleep(10); /* plls locking */
 411
 412         /* launch the rf tracking filters calibration */
 413         regs[R_EB20]  |= 0x20;
 414         tda18271_write_regs(fe, R_EB20, 1);
 415
 416         msleep(60); /* calibration */
 417
 418         /* --------------------------------------------------------------- */
 419
 420         /* set CAL mode to normal */
 421         regs[R_EP4]  &= ~0x03;
 422
 423         /* switch on agc1 */
 424         regs[R_EP3]  &= ~0x40; /* sm_lt = 0 */
 425
 426         regs[R_EB18] &= ~0x03; /* set agc1_gain to  6 dB */
 427         tda18271_write_regs(fe, R_EB18, 1);
 428
 429         tda18271_write_regs(fe, R_EP3, 2);
 430
 431         /* synchronization */
 432         tda18271_write_regs(fe, R_EP1, 1);
 433
 434         /* get calibration result */
 435         tda18271_read_extended(fe);
 436
 437         return regs[R_EB14];
 438 }
 439
 440 static int tda18271_powerscan(struct dvb_frontend *fe,
 441                               u32 *freq_in, u32 *freq_out)
 442 {
 443         struct tda18271_priv *priv = fe->tuner_priv;
 444         unsigned char *regs = priv->tda18271_regs;
 445         int sgn, bcal, count, wait, ret;
 446         u8 cid_target;
 447         u16 count_limit;
 448         u32 freq;
 449
 450         freq = *freq_in;
 451
 452         tda18271_calc_rf_band(fe, &freq);
 453         tda18271_calc_rf_cal(fe, &freq);
 454         tda18271_calc_gain_taper(fe, &freq);
 455         tda18271_lookup_cid_target(fe, &freq, &cid_target, &count_limit);
 456
 457         tda18271_write_regs(fe, R_EP2, 1);
 458         tda18271_write_regs(fe, R_EB14, 1);
 459
 460         /* downconvert frequency */
 461         freq += 1000000;
 462
 463         tda18271_calc_main_pll(fe, freq);
 464         tda18271_write_regs(fe, R_MPD, 4);
 465
 466         msleep(5); /* pll locking */
 467
 468         /* detection mode */
 469         regs[R_EP4]  &= ~0x03;
 470         regs[R_EP4]  |= 0x01;
 471         tda18271_write_regs(fe, R_EP4, 1);
 472
 473         /* launch power detection measurement */
 474         tda18271_write_regs(fe, R_EP2, 1);
 475
 476         /* read power detection info, stored in EB10 */
 477         ret = tda18271_read_extended(fe);
 478         if (tda_fail(ret))
 479                 return ret;
 480
 481         /* algorithm initialization */
 482         sgn = 1;
 483         *freq_out = *freq_in;
 484         bcal = 0;
 485         count = 0;
 486         wait = false;
 487
 488         while ((regs[R_EB10] & 0x3f) < cid_target) {
 489                 /* downconvert updated freq to 1 MHz */
 490                 freq = *freq_in + (sgn * count) + 1000000;
 491
 492                 tda18271_calc_main_pll(fe, freq);
 493                 tda18271_write_regs(fe, R_MPD, 4);
 494
 495                 if (wait) {
 496                         msleep(5); /* pll locking */
 497                         wait = false;
 498                 } else
 499                         udelay(100); /* pll locking */
 500
 501                 /* launch power detection measurement */
 502                 tda18271_write_regs(fe, R_EP2, 1);
 503
 504                 /* read power detection info, stored in EB10 */
 505                 ret = tda18271_read_extended(fe);
 506                 if (tda_fail(ret))
 507                         return ret;
 508
 509                 count += 200;
 510
 511                 if (count <= count_limit)
 512                         continue;
 513
 514                 if (sgn <= 0)
 515                         break;
 516
 517                 sgn = -1 * sgn;
 518                 count = 200;
 519                 wait = true;
 520         }
 521
 522         if ((regs[R_EB10] & 0x3f) >= cid_target) {
 523                 bcal = 1;
 524                 *freq_out = freq - 1000000;
 525         } else
 526                 bcal = 0;
 527
 528         tda_cal("bcal = %d, freq_in = %d, freq_out = %d (freq = %d)\n",
 529                 bcal, *freq_in, *freq_out, freq);
 530
 531         return bcal;
 532 }
 533
 534 static int tda18271_powerscan_init(struct dvb_frontend *fe)
 535 {
 536         struct tda18271_priv *priv = fe->tuner_priv;
 537         unsigned char *regs = priv->tda18271_regs;
 538         int ret;
 539
 540         /* set standard to digital */
 541         regs[R_EP3]  &= ~0x1f; /* clear std bits */
 542         regs[R_EP3]  |= 0x12;
 543
 544         /* set cal mode to normal */
 545         regs[R_EP4]  &= ~0x03;
 546
 547         /* update IF output level */
 548         regs[R_EP4]  &= ~0x1c; /* clear if level bits */
 549
 550         ret = tda18271_write_regs(fe, R_EP3, 2);
 551         if (tda_fail(ret))
 552                 goto fail;
 553
 554         regs[R_EB18] &= ~0x03; /* set agc1_gain to   6 dB */
 555         ret = tda18271_write_regs(fe, R_EB18, 1);
 556         if (tda_fail(ret))
 557                 goto fail;
 558
 559         regs[R_EB21] &= ~0x03; /* set agc2_gain to -15 dB */
 560
 561         /* 1.5 MHz low pass filter */
 562         regs[R_EB23] |= 0x04; /* forcelp_fc2_en = 1 */
 563         regs[R_EB23] |= 0x02; /* lp_fc[2] = 1 */
 564
 565         ret = tda18271_write_regs(fe, R_EB21, 3);
 566 fail:
 567         return ret;
 568 }
 569
 570 static int tda18271_rf_tracking_filters_init(struct dvb_frontend *fe, u32 freq)
 571 {
 572         struct tda18271_priv *priv = fe->tuner_priv;
 573         struct tda18271_rf_tracking_filter_cal *map = priv->rf_cal_state;
 574         unsigned char *regs = priv->tda18271_regs;
 575         int bcal, rf, i;
 576         s32 divisor, dividend;
 577 #define RF1 0
 578 #define RF2 1
 579 #define RF3 2
 580         u32 rf_default[3];
 581         u32 rf_freq[3];
 582         s32 prog_cal[3];
 583         s32 prog_tab[3];
 584
 585         i = tda18271_lookup_rf_band(fe, &freq, NULL);
 586
 587         if (tda_fail(i))
 588                 return i;
 589
 590         rf_default[RF1] = 1000 * map[i].rf1_def;
 591         rf_default[RF2] = 1000 * map[i].rf2_def;
 592         rf_default[RF3] = 1000 * map[i].rf3_def;
 593
 594         for (rf = RF1; rf <= RF3; rf++) {
 595                 if (0 == rf_default[rf])
 596                         return 0;
 597                 tda_cal("freq = %d, rf = %d\n", freq, rf);
 598
 599                 /* look for optimized calibration frequency */
 600                 bcal = tda18271_powerscan(fe, &rf_default[rf], &rf_freq[rf]);
 601                 if (tda_fail(bcal))
 602                         return bcal;
 603
 604                 tda18271_calc_rf_cal(fe, &rf_freq[rf]);
 605                 prog_tab[rf] = (s32)regs[R_EB14];
 606
 607                 if (1 == bcal)
 608                         prog_cal[rf] =
 609                                 (s32)tda18271_calibrate_rf(fe, rf_freq[rf]);
 610                 else
 611                         prog_cal[rf] = prog_tab[rf];
 612
 613                 switch (rf) {
 614                 case RF1:
 615                         map[i].rf_a1 = 0;
 616                         map[i].rf_b1 = (prog_cal[RF1] - prog_tab[RF1]);
 617                         map[i].rf1   = rf_freq[RF1] / 1000;
 618                         break;
 619                 case RF2:
 620                         dividend = (prog_cal[RF2] - prog_tab[RF2] -
 621                                     prog_cal[RF1] + prog_tab[RF1]);
 622                         divisor = (s32)(rf_freq[RF2] - rf_freq[RF1]) / 1000;
 623                         map[i].rf_a1 = (dividend / divisor);
 624                         map[i].rf2   = rf_freq[RF2] / 1000;
 625                         break;
 626                 case RF3:
 627                         dividend = (prog_cal[RF3] - prog_tab[RF3] -
 628                                     prog_cal[RF2] + prog_tab[RF2]);
 629                         divisor = (s32)(rf_freq[RF3] - rf_freq[RF2]) / 1000;
 630                         map[i].rf_a2 = (dividend / divisor);
 631                         map[i].rf_b2 = (prog_cal[RF2] - prog_tab[RF2]);
 632                         map[i].rf3   = rf_freq[RF3] / 1000;
 633                         break;
 634                 default:
 635                         BUG();
 636                 }
 637         }
 638
 639         return 0;
 640 }
 641
 642 static int tda18271_calc_rf_filter_curve(struct dvb_frontend *fe)
 643 {
 644         struct tda18271_priv *priv = fe->tuner_priv;
 645         unsigned int i;
 646         int ret;
 647
 648         tda_info("tda18271: performing RF tracking filter calibration\n");
 649
 650         /* wait for die temperature stabilization */
 651         msleep(200);
 652
 653         ret = tda18271_powerscan_init(fe);
 654         if (tda_fail(ret))
 655                 goto fail;
 656
 657         /* rf band calibration */
 658         for (i = 0; priv->rf_cal_state[i].rfmax != 0; i++) {
 659                 ret =
 660                 tda18271_rf_tracking_filters_init(fe, 1000 *
 661                                                   priv->rf_cal_state[i].rfmax);
 662                 if (tda_fail(ret))
 663                         goto fail;
 664         }
 665
 666         priv->tm_rfcal = tda18271_read_thermometer(fe);
 667 fail:
 668         return ret;
 669 }
 670
 671 /* ------------------------------------------------------------------ */
 672
 673 static int tda18271c2_rf_cal_init(struct dvb_frontend *fe)
 674 {
 675         struct tda18271_priv *priv = fe->tuner_priv;
 676         unsigned char *regs = priv->tda18271_regs;
 677         int ret;
 678
 679         /* test RF_CAL_OK to see if we need init */
 680         if ((regs[R_EP1] & 0x10) == 0)
 681                 priv->cal_initialized = false;
 682
 683         if (priv->cal_initialized)
 684                 return 0;
 685
 686         ret = tda18271_calc_rf_filter_curve(fe);
 687         if (tda_fail(ret))
 688                 goto fail;
 689
 690         ret = tda18271_por(fe);
 691         if (tda_fail(ret))
 692                 goto fail;
 693
 694         tda_info("tda18271: RF tracking filter calibration complete\n");
 695
 696         priv->cal_initialized = true;
 697         goto end;
 698 fail:
 699         tda_info("tda18271: RF tracking filter calibration failed!\n");
 700 end:
 701         return ret;
 702 }
 703
 704 static int tda18271c1_rf_tracking_filter_calibration(struct dvb_frontend *fe,
 705                                                      u32 freq, u32 bw)
 706 {
 707         struct tda18271_priv *priv = fe->tuner_priv;
 708         unsigned char *regs = priv->tda18271_regs;
 709         int ret;
 710         u32 N = 0;
 711
 712         /* calculate bp filter */
 713         tda18271_calc_bp_filter(fe, &freq);
 714         tda18271_write_regs(fe, R_EP1, 1);
 715
 716         regs[R_EB4]  &= 0x07;
 717         regs[R_EB4]  |= 0x60;
 718         tda18271_write_regs(fe, R_EB4, 1);
 719
 720         regs[R_EB7]   = 0x60;
 721         tda18271_write_regs(fe, R_EB7, 1);
 722
 723         regs[R_EB14]  = 0x00;
 724         tda18271_write_regs(fe, R_EB14, 1);
 725
 726         regs[R_EB20]  = 0xcc;
 727         tda18271_write_regs(fe, R_EB20, 1);
 728
 729         /* set cal mode to RF tracking filter calibration */
 730         regs[R_EP4]  |= 0x03;
 731
 732         /* calculate cal pll */
 733
 734         switch (priv->mode) {
 735         case TDA18271_ANALOG:
 736                 N = freq - 1250000;
 737                 break;
 738         case TDA18271_DIGITAL:
 739                 N = freq + bw / 2;
 740                 break;
 741         }
 742
 743         tda18271_calc_cal_pll(fe, N);
 744
 745         /* calculate main pll */
 746
 747         switch (priv->mode) {
 748         case TDA18271_ANALOG:
 749                 N = freq - 250000;
 750                 break;
 751         case TDA18271_DIGITAL:
 752                 N = freq + bw / 2 + 1000000;
 753                 break;
 754         }
 755
 756         tda18271_calc_main_pll(fe, N);
 757
 758         ret = tda18271_write_regs(fe, R_EP3, 11);
 759         if (tda_fail(ret))
 760                 return ret;
 761
 762         msleep(5); /* RF tracking filter calibration initialization */
 763
 764         /* search for K,M,CO for RF calibration */
 765         tda18271_calc_km(fe, &freq);
 766         tda18271_write_regs(fe, R_EB13, 1);
 767
 768         /* search for rf band */
 769         tda18271_calc_rf_band(fe, &freq);
 770
 771         /* search for gain taper */
 772         tda18271_calc_gain_taper(fe, &freq);
 773
 774         tda18271_write_regs(fe, R_EP2, 1);
 775         tda18271_write_regs(fe, R_EP1, 1);
 776         tda18271_write_regs(fe, R_EP2, 1);
 777         tda18271_write_regs(fe, R_EP1, 1);
 778
 779         regs[R_EB4]  &= 0x07;
 780         regs[R_EB4]  |= 0x40;
 781         tda18271_write_regs(fe, R_EB4, 1);
 782
 783         regs[R_EB7]   = 0x40;
 784         tda18271_write_regs(fe, R_EB7, 1);
 785         msleep(10); /* pll locking */
 786
 787         regs[R_EB20]  = 0xec;
 788         tda18271_write_regs(fe, R_EB20, 1);
 789         msleep(60); /* RF tracking filter calibration completion */
 790
 791         regs[R_EP4]  &= ~0x03; /* set cal mode to normal */
 792         tda18271_write_regs(fe, R_EP4, 1);
 793
 794         tda18271_write_regs(fe, R_EP1, 1);
 795
 796         /* RF tracking filter correction for VHF_Low band */
 797         if (0 == tda18271_calc_rf_cal(fe, &freq))
 798                 tda18271_write_regs(fe, R_EB14, 1);
 799
 800         return 0;
 801 }
 802
 803 /* ------------------------------------------------------------------ */
 804
 805 static int tda18271_ir_cal_init(struct dvb_frontend *fe)
 806 {
 807         struct tda18271_priv *priv = fe->tuner_priv;
 808         unsigned char *regs = priv->tda18271_regs;
 809         int ret;
 810
 811         ret = tda18271_read_regs(fe);
 812         if (tda_fail(ret))
 813                 goto fail;
 814
 815         /* test IR_CAL_OK to see if we need init */
 816         if ((regs[R_EP1] & 0x08) == 0)
 817                 ret = tda18271_init_regs(fe);
 818 fail:
 819         return ret;
 820 }
 821
 822 static int tda18271_init(struct dvb_frontend *fe)
 823 {
 824         struct tda18271_priv *priv = fe->tuner_priv;
 825         int ret;
 826
 827         mutex_lock(&priv->lock);
 828
 829         /* full power up */
 830         ret = tda18271_set_standby_mode(fe, 0, 0, 0);
 831         if (tda_fail(ret))
 832                 goto fail;
 833
 834         /* initialization */
 835         ret = tda18271_ir_cal_init(fe);
 836         if (tda_fail(ret))
 837                 goto fail;
 838
 839         if (priv->id == TDA18271HDC2)
 840                 tda18271c2_rf_cal_init(fe);
 841 fail:
 842         mutex_unlock(&priv->lock);
 843
 844         return ret;
 845 }
 846
 847 static int tda18271_sleep(struct dvb_frontend *fe)
 848 {
 849         struct tda18271_priv *priv = fe->tuner_priv;
 850         int ret;
 851
 852         mutex_lock(&priv->lock);
 853
 854         /* enter standby mode, with required output features enabled */
 855         ret = tda18271_toggle_output(fe, 1);
 856
 857         mutex_unlock(&priv->lock);
 858
 859         return ret;
 860 }
 861
 862 /* ------------------------------------------------------------------ */
 863
 864 static int tda18271_agc(struct dvb_frontend *fe)
 865 {
 866         struct tda18271_priv *priv = fe->tuner_priv;
 867         int ret = 0;
 868
 869         switch (priv->config) {
 870         case 0:
 871                 /* no external agc configuration required */
 872                 if (tda18271_debug & DBG_ADV)
 873                         tda_dbg("no agc configuration provided\n");
 874                 break;
 875         case 3:
 876                 /* switch with GPIO of saa713x */
 877                 tda_dbg("invoking callback\n");
 878                 if (fe->callback)
 879                         ret = fe->callback(priv->i2c_props.adap->algo_data,
 880                                            DVB_FRONTEND_COMPONENT_TUNER,
 881                                            TDA18271_CALLBACK_CMD_AGC_ENABLE,
 882                                            priv->mode);
 883                 break;
 884         case 1:
 885         case 2:
 886         default:
 887                 /* n/a - currently not supported */
 888                 tda_err("unsupported configuration: %d\n", priv->config);
 889                 ret = -EINVAL;
 890                 break;
 891         }
 892         return ret;
 893 }
 894
 895 static int tda18271_tune(struct dvb_frontend *fe,
 896                          struct tda18271_std_map_item *map, u32 freq, u32 bw)
 897 {
 898         struct tda18271_priv *priv = fe->tuner_priv;
 899         int ret;
 900
 901         tda_dbg("freq = %d, ifc = %d, bw = %d, agc_mode = %d, std = %d\n",
 902                 freq, map->if_freq, bw, map->agc_mode, map->std);
 903
 904         ret = tda18271_agc(fe);
 905         if (tda_fail(ret))
 906                 tda_warn("failed to configure agc\n");
 907
 908         ret = tda18271_init(fe);
 909         if (tda_fail(ret))
 910                 goto fail;
 911
 912         mutex_lock(&priv->lock);
 913
 914         switch (priv->id) {
 915         case TDA18271HDC1:
 916                 tda18271c1_rf_tracking_filter_calibration(fe, freq, bw);
 917                 break;
 918         case TDA18271HDC2:
 919                 tda18271c2_rf_tracking_filters_correction(fe, freq);
 920                 break;
 921         }
 922         ret = tda18271_channel_configuration(fe, map, freq, bw);
 923
 924         mutex_unlock(&priv->lock);
 925 fail:
 926         return ret;
 927 }
 928
 929 /* ------------------------------------------------------------------ */
 930
 931 static int tda18271_set_params(struct dvb_frontend *fe)
 932 {
 933         struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 934         u32 delsys = c->delivery_system;
 935         u32 bw = c->bandwidth_hz;
 936         u32 freq = c->frequency;
 937         struct tda18271_priv *priv = fe->tuner_priv;
 938         struct tda18271_std_map *std_map = &priv->std;
 939         struct tda18271_std_map_item *map;
 940         int ret;
 941
 942         priv->mode = TDA18271_DIGITAL;
 943
 944         switch (delsys) {
 945         case SYS_ATSC:
 946                 map = &std_map->atsc_6;
 947                 bw = 6000000;
 948                 break;
 949         case SYS_ISDBT:
 950         case SYS_DVBT:
 951         case SYS_DVBT2:
 952                 if (bw <= 6000000) {
 953                         map = &std_map->dvbt_6;
 954                 } else if (bw <= 7000000) {
 955                         map = &std_map->dvbt_7;
 956                 } else {
 957                         map = &std_map->dvbt_8;
 958                 }
 959                 break;
 960         case SYS_DVBC_ANNEX_B:
 961                 bw = 6000000;
 962                 /* falltrough */
 963         case SYS_DVBC_ANNEX_A:
 964         case SYS_DVBC_ANNEX_C:
 965                 if (bw <= 6000000) {
 966                         map = &std_map->qam_6;
 967                 } else if (bw <= 7000000) {
 968                         map = &std_map->qam_7;
 969                 } else {
 970                         map = &std_map->qam_8;
 971                 }
 972                 break;
 973         default:
 974                 tda_warn("modulation type not supported!\n");
 975                 return -EINVAL;
 976         }
 977
 978         /* When tuning digital, the analog demod must be tri-stated */
 979         if (fe->ops.analog_ops.standby)
 980                 fe->ops.analog_ops.standby(fe);
 981
 982         ret = tda18271_tune(fe, map, freq, bw);
 983
 984         if (tda_fail(ret))
 985                 goto fail;
 986
 987         priv->if_freq   = map->if_freq;
 988         priv->frequency = freq;
 989         priv->bandwidth = bw;
 990 fail:
 991         return ret;
 992 }
 993
 994 static int tda18271_set_analog_params(struct dvb_frontend *fe,
 995                                       struct analog_parameters *params)
 996 {
 997         struct tda18271_priv *priv = fe->tuner_priv;
 998         struct tda18271_std_map *std_map = &priv->std;
 999         struct tda18271_std_map_item *map;
1000         char *mode;
1001         int ret;
1002         u32 freq = params->frequency * 125 *
1003                 ((params->mode == V4L2_TUNER_RADIO) ? 1 : 1000) / 2;
1004
1005         priv->mode = TDA18271_ANALOG;
1006
1007         if (params->mode == V4L2_TUNER_RADIO) {
1008                 map = &std_map->fm_radio;
1009                 mode = "fm";
1010         } else if (params->std & V4L2_STD_MN) {
1011                 map = &std_map->atv_mn;
1012                 mode = "MN";
1013         } else if (params->std & V4L2_STD_B) {
1014                 map = &std_map->atv_b;
1015                 mode = "B";
1016         } else if (params->std & V4L2_STD_GH) {
1017                 map = &std_map->atv_gh;
1018                 mode = "GH";
1019         } else if (params->std & V4L2_STD_PAL_I) {
1020                 map = &std_map->atv_i;
1021                 mode = "I";
1022         } else if (params->std & V4L2_STD_DK) {
1023                 map = &std_map->atv_dk;
1024                 mode = "DK";
1025         } else if (params->std & V4L2_STD_SECAM_L) {
1026                 map = &std_map->atv_l;
1027                 mode = "L";
1028         } else if (params->std & V4L2_STD_SECAM_LC) {
1029                 map = &std_map->atv_lc;
1030                 mode = "L'";
1031         } else {
1032                 map = &std_map->atv_i;
1033                 mode = "xx";
1034         }
1035
1036         tda_dbg("setting tda18271 to system %s\n", mode);
1037
1038         ret = tda18271_tune(fe, map, freq, 0);
1039
1040         if (tda_fail(ret))
1041                 goto fail;
1042
1043         priv->if_freq   = map->if_freq;
1044         priv->frequency = freq;
1045         priv->bandwidth = 0;
1046 fail:
1047         return ret;
1048 }
1049
1050 static int tda18271_release(struct dvb_frontend *fe)
1051 {
1052         struct tda18271_priv *priv = fe->tuner_priv;
1053
1054         mutex_lock(&tda18271_list_mutex);
1055
1056         if (priv)
1057                 hybrid_tuner_release_state(priv);
1058
1059         mutex_unlock(&tda18271_list_mutex);
1060
1061         fe->tuner_priv = NULL;
1062
1063         return 0;
1064 }
1065
1066 static int tda18271_get_frequency(struct dvb_frontend *fe, u32 *frequency)
1067 {
1068         struct tda18271_priv *priv = fe->tuner_priv;
1069         *frequency = priv->frequency;
1070         return 0;
1071 }
1072
1073 static int tda18271_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
1074 {
1075         struct tda18271_priv *priv = fe->tuner_priv;
1076         *bandwidth = priv->bandwidth;
1077         return 0;
1078 }
1079
1080 static int tda18271_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
1081 {
1082         struct tda18271_priv *priv = fe->tuner_priv;
1083         *frequency = (u32)priv->if_freq * 1000;
1084         return 0;
1085 }
1086
1087 /* ------------------------------------------------------------------ */
1088
1089 #define tda18271_update_std(std_cfg, name) do {                         \
1090         if (map->std_cfg.if_freq +                                      \
1091                 map->std_cfg.agc_mode + map->std_cfg.std +              \
1092                 map->std_cfg.if_lvl + map->std_cfg.rfagc_top > 0) {     \
1093                 tda_dbg("Using custom std config for %s\n", name);      \
1094                 memcpy(&std->std_cfg, &map->std_cfg,                    \
1095                         sizeof(struct tda18271_std_map_item));          \
1096         } } while (0)
1097
1098 #define tda18271_dump_std_item(std_cfg, name) do {                      \
1099         tda_dbg("(%s) if_freq = %d, agc_mode = %d, std = %d, "          \
1100                 "if_lvl = %d, rfagc_top = 0x%02x\n",                    \
1101                 name, std->std_cfg.if_freq,                             \
1102                 std->std_cfg.agc_mode, std->std_cfg.std,                \
1103                 std->std_cfg.if_lvl, std->std_cfg.rfagc_top);           \
1104         } while (0)
1105
1106 static int tda18271_dump_std_map(struct dvb_frontend *fe)
1107 {
1108         struct tda18271_priv *priv = fe->tuner_priv;
1109         struct tda18271_std_map *std = &priv->std;
1110
1111         tda_dbg("========== STANDARD MAP SETTINGS ==========\n");
1112         tda18271_dump_std_item(fm_radio, "  fm  ");
1113         tda18271_dump_std_item(atv_b,  "atv b ");
1114         tda18271_dump_std_item(atv_dk, "atv dk");
1115         tda18271_dump_std_item(atv_gh, "atv gh");
1116         tda18271_dump_std_item(atv_i,  "atv i ");
1117         tda18271_dump_std_item(atv_l,  "atv l ");
1118         tda18271_dump_std_item(atv_lc, "atv l'");
1119         tda18271_dump_std_item(atv_mn, "atv mn");
1120         tda18271_dump_std_item(atsc_6, "atsc 6");
1121         tda18271_dump_std_item(dvbt_6, "dvbt 6");
1122         tda18271_dump_std_item(dvbt_7, "dvbt 7");
1123         tda18271_dump_std_item(dvbt_8, "dvbt 8");
1124         tda18271_dump_std_item(qam_6,  "qam 6 ");
1125         tda18271_dump_std_item(qam_7,  "qam 7 ");
1126         tda18271_dump_std_item(qam_8,  "qam 8 ");
1127
1128         return 0;
1129 }
1130
1131 static int tda18271_update_std_map(struct dvb_frontend *fe,
1132                                    struct tda18271_std_map *map)
1133 {
1134         struct tda18271_priv *priv = fe->tuner_priv;
1135         struct tda18271_std_map *std = &priv->std;
1136
1137         if (!map)
1138                 return -EINVAL;
1139
1140         tda18271_update_std(fm_radio, "fm");
1141         tda18271_update_std(atv_b,  "atv b");
1142         tda18271_update_std(atv_dk, "atv dk");
1143         tda18271_update_std(atv_gh, "atv gh");
1144         tda18271_update_std(atv_i,  "atv i");
1145         tda18271_update_std(atv_l,  "atv l");
1146         tda18271_update_std(atv_lc, "atv l'");
1147         tda18271_update_std(atv_mn, "atv mn");
1148         tda18271_update_std(atsc_6, "atsc 6");
1149         tda18271_update_std(dvbt_6, "dvbt 6");
1150         tda18271_update_std(dvbt_7, "dvbt 7");
1151         tda18271_update_std(dvbt_8, "dvbt 8");
1152         tda18271_update_std(qam_6,  "qam 6");
1153         tda18271_update_std(qam_7,  "qam 7");
1154         tda18271_update_std(qam_8,  "qam 8");
1155
1156         return 0;
1157 }
1158
1159 static int tda18271_get_id(struct dvb_frontend *fe)
1160 {
1161         struct tda18271_priv *priv = fe->tuner_priv;
1162         unsigned char *regs = priv->tda18271_regs;
1163         char *name;
1164         int ret;
1165
1166         mutex_lock(&priv->lock);
1167         ret = tda18271_read_regs(fe);
1168         mutex_unlock(&priv->lock);
1169
1170         if (ret) {
1171                 tda_info("Error reading device ID @ %d-%04x, bailing out.\n",
1172                          i2c_adapter_id(priv->i2c_props.adap),
1173                          priv->i2c_props.addr);
1174                 return -EIO;
1175         }
1176
1177         switch (regs[R_ID] & 0x7f) {
1178         case 3:
1179                 name = "TDA18271HD/C1";
1180                 priv->id = TDA18271HDC1;
1181                 break;
1182         case 4:
1183                 name = "TDA18271HD/C2";
1184                 priv->id = TDA18271HDC2;
1185                 break;
1186         default:
1187                 tda_info("Unknown device (%i) detected @ %d-%04x, device not supported.\n",
1188                          regs[R_ID], i2c_adapter_id(priv->i2c_props.adap),
1189                          priv->i2c_props.addr);
1190                 return -EINVAL;
1191         }
1192
1193         tda_info("%s detected @ %d-%04x\n", name,
1194                  i2c_adapter_id(priv->i2c_props.adap), priv->i2c_props.addr);
1195
1196         return 0;
1197 }
1198
1199 static int tda18271_setup_configuration(struct dvb_frontend *fe,
1200                                         struct tda18271_config *cfg)
1201 {
1202         struct tda18271_priv *priv = fe->tuner_priv;
1203
1204         priv->gate = (cfg) ? cfg->gate : TDA18271_GATE_AUTO;
1205         priv->role = (cfg) ? cfg->role : TDA18271_MASTER;
1206         priv->config = (cfg) ? cfg->config : 0;
1207         priv->small_i2c = (cfg) ?
1208                 cfg->small_i2c : TDA18271_39_BYTE_CHUNK_INIT;
1209         priv->output_opt = (cfg) ?
1210                 cfg->output_opt : TDA18271_OUTPUT_LT_XT_ON;
1211
1212         return 0;
1213 }
1214
1215 static inline int tda18271_need_cal_on_startup(struct tda18271_config *cfg)
1216 {
1217         /* tda18271_cal_on_startup == -1 when cal module option is unset */
1218         return ((tda18271_cal_on_startup == -1) ?
1219                 /* honor configuration setting */
1220                 ((cfg) && (cfg->rf_cal_on_startup)) :
1221                 /* module option overrides configuration setting */
1222                 (tda18271_cal_on_startup)) ? 1 : 0;
1223 }
1224
1225 static int tda18271_set_config(struct dvb_frontend *fe, void *priv_cfg)
1226 {
1227         struct tda18271_config *cfg = (struct tda18271_config *) priv_cfg;
1228
1229         tda18271_setup_configuration(fe, cfg);
1230
1231         if (tda18271_need_cal_on_startup(cfg))
1232                 tda18271_init(fe);
1233
1234         /* override default std map with values in config struct */
1235         if ((cfg) && (cfg->std_map))
1236                 tda18271_update_std_map(fe, cfg->std_map);
1237
1238         return 0;
1239 }
1240
1241 static const struct dvb_tuner_ops tda18271_tuner_ops = {
1242         .info = {
1243                 .name = "NXP TDA18271HD",
1244                 .frequency_min  =  45000000,
1245                 .frequency_max  = 864000000,
1246                 .frequency_step =     62500
1247         },
1248         .init              = tda18271_init,
1249         .sleep             = tda18271_sleep,
1250         .set_params        = tda18271_set_params,
1251         .set_analog_params = tda18271_set_analog_params,
1252         .release           = tda18271_release,
1253         .set_config        = tda18271_set_config,
1254         .get_frequency     = tda18271_get_frequency,
1255         .get_bandwidth     = tda18271_get_bandwidth,
1256         .get_if_frequency  = tda18271_get_if_frequency,
1257 };
1258
1259 struct dvb_frontend *tda18271_attach(struct dvb_frontend *fe, u8 addr,
1260                                      struct i2c_adapter *i2c,
1261                                      struct tda18271_config *cfg)
1262 {
1263         struct tda18271_priv *priv = NULL;
1264         int instance, ret;
1265
1266         mutex_lock(&tda18271_list_mutex);
1267
1268         instance = hybrid_tuner_request_state(struct tda18271_priv, priv,
1269                                               hybrid_tuner_instance_list,
1270                                               i2c, addr, "tda18271");
1271         switch (instance) {
1272         case 0:
1273                 goto fail;
1274         case 1:
1275                 /* new tuner instance */
1276                 fe->tuner_priv = priv;
1277
1278                 tda18271_setup_configuration(fe, cfg);
1279
1280                 priv->cal_initialized = false;
1281                 mutex_init(&priv->lock);
1282
1283                 ret = tda18271_get_id(fe);
1284                 if (tda_fail(ret))
1285                         goto fail;
1286
1287                 ret = tda18271_assign_map_layout(fe);
1288                 if (tda_fail(ret))
1289                         goto fail;
1290
1291                 /* if delay_cal is set, delay IR & RF calibration until init()
1292                  * module option 'cal' overrides this delay */
1293                 if ((cfg->delay_cal) && (!tda18271_need_cal_on_startup(cfg)))
1294                         break;
1295
1296                 mutex_lock(&priv->lock);
1297                 tda18271_init_regs(fe);
1298
1299                 if ((tda18271_need_cal_on_startup(cfg)) &&
1300                     (priv->id == TDA18271HDC2))
1301                         tda18271c2_rf_cal_init(fe);
1302
1303                 /* enter standby mode, with required output features enabled */
1304                 ret = tda18271_toggle_output(fe, 1);
1305                 tda_fail(ret);
1306
1307                 mutex_unlock(&priv->lock);
1308                 break;
1309         default:
1310                 /* existing tuner instance */
1311                 fe->tuner_priv = priv;
1312
1313                 /* allow dvb driver to override configuration settings */
1314                 if (cfg) {
1315                         if (cfg->gate != TDA18271_GATE_ANALOG)
1316                                 priv->gate = cfg->gate;
1317                         if (cfg->role)
1318                                 priv->role = cfg->role;
1319                         if (cfg->config)
1320                                 priv->config = cfg->config;
1321                         if (cfg->small_i2c)
1322                                 priv->small_i2c = cfg->small_i2c;
1323                         if (cfg->output_opt)
1324                                 priv->output_opt = cfg->output_opt;
1325                         if (cfg->std_map)
1326                                 tda18271_update_std_map(fe, cfg->std_map);
1327                 }
1328                 if (tda18271_need_cal_on_startup(cfg))
1329                         tda18271_init(fe);
1330                 break;
1331         }
1332
1333         /* override default std map with values in config struct */
1334         if ((cfg) && (cfg->std_map))
1335                 tda18271_update_std_map(fe, cfg->std_map);
1336
1337         mutex_unlock(&tda18271_list_mutex);
1338
1339         memcpy(&fe->ops.tuner_ops, &tda18271_tuner_ops,
1340                sizeof(struct dvb_tuner_ops));
1341
1342         if (tda18271_debug & (DBG_MAP | DBG_ADV))
1343                 tda18271_dump_std_map(fe);
1344
1345         return fe;
1346 fail:
1347         mutex_unlock(&tda18271_list_mutex);
1348
1349         tda18271_release(fe);
1350         return NULL;
1351 }
1352 EXPORT_SYMBOL_GPL(tda18271_attach);
1353 MODULE_DESCRIPTION("NXP TDA18271HD analog / digital tuner driver");
1354 MODULE_AUTHOR("Michael Krufky <mkrufky@linuxtv.org>");
1355 MODULE_LICENSE("GPL");
1356 MODULE_VERSION("0.4");
1357
1358 /*
1359  * Overrides for Emacs so that we follow Linus's tabbing style.
1360  * ---------------------------------------------------------------------------
1361  * Local variables:
1362  * c-basic-offset: 8
1363  * End:
1364  */