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 #include "tda8290.h"
  25
  26 int tda18271_debug;
  27 module_param_named(debug, tda18271_debug, int, 0644);
  28 MODULE_PARM_DESC(debug, "set debug level "
  29                  "(info=1, map=2, reg=4, adv=8, cal=16 (or-able))");
  30
  31 static int tda18271_cal_on_startup = -1;
  32 module_param_named(cal, tda18271_cal_on_startup, int, 0644);
  33 MODULE_PARM_DESC(cal, "perform RF tracking filter calibration on startup");
  34
  35 static DEFINE_MUTEX(tda18271_list_mutex);
  36 static LIST_HEAD(hybrid_tuner_instance_list);
  37
  38 /*---------------------------------------------------------------------*/
  39
  40 static int tda18271_toggle_output(struct dvb_frontend *fe, int standby)
  41 {
  42         struct tda18271_priv *priv = fe->tuner_priv;
  43
  44         int ret = tda18271_set_standby_mode(fe, standby ? 1 : 0,
  45                         priv->output_opt & TDA18271_OUTPUT_LT_OFF ? 1 : 0,
  46                         priv->output_opt & TDA18271_OUTPUT_XT_OFF ? 1 : 0);
  47
  48         if (tda_fail(ret))
  49                 goto fail;
  50
  51         tda_dbg("%s mode: xtal oscillator %s, slave tuner loop thru %s\n",
  52                 standby ? "standby" : "active",
  53                 priv->output_opt & TDA18271_OUTPUT_XT_OFF ? "off" : "on",
  54                 priv->output_opt & TDA18271_OUTPUT_LT_OFF ? "off" : "on");
  55 fail:
  56         return ret;
  57 }
  58
  59 /*---------------------------------------------------------------------*/
  60
  61 static inline int charge_pump_source(struct dvb_frontend *fe, int force)
  62 {
  63         struct tda18271_priv *priv = fe->tuner_priv;
  64         return tda18271_charge_pump_source(fe,
  65                                            (priv->role == TDA18271_SLAVE) ?
  66                                            TDA18271_CAL_PLL :
  67                                            TDA18271_MAIN_PLL, force);
  68 }
  69
  70 static inline void tda18271_set_if_notch(struct dvb_frontend *fe)
  71 {
  72         struct tda18271_priv *priv = fe->tuner_priv;
  73         unsigned char *regs = priv->tda18271_regs;
  74
  75         switch (priv->mode) {
  76         case TDA18271_ANALOG:
  77                 regs[R_MPD]  &= ~0x80; /* IF notch = 0 */
  78                 break;
  79         case TDA18271_DIGITAL:
  80                 regs[R_MPD]  |= 0x80; /* IF notch = 1 */
  81                 break;
  82         }
  83 }
  84
  85 static int tda18271_channel_configuration(struct dvb_frontend *fe,
  86                                           struct tda18271_std_map_item *map,
  87                                           u32 freq, u32 bw)
  88 {
  89         struct tda18271_priv *priv = fe->tuner_priv;
  90         unsigned char *regs = priv->tda18271_regs;
  91         int ret;
  92         u32 N;
  93
  94         /* update TV broadcast parameters */
  95
  96         /* set standard */
  97         regs[R_EP3]  &= ~0x1f; /* clear std bits */
  98         regs[R_EP3]  |= (map->agc_mode << 3) | map->std;
  99
 100         if (priv->id == TDA18271HDC2) {
 101                 /* set rfagc to high speed mode */
 102                 regs[R_EP3] &= ~0x04;
 103         }
 104
 105         /* set cal mode to normal */
 106         regs[R_EP4]  &= ~0x03;
 107
 108         /* update IF output level */
 109         regs[R_EP4]  &= ~0x1c; /* clear if level bits */
 110         regs[R_EP4]  |= (map->if_lvl << 2);
 111
 112         /* update FM_RFn */
 113         regs[R_EP4]  &= ~0x80;
 114         regs[R_EP4]  |= map->fm_rfn << 7;
 115
 116         /* update rf top / if top */
 117         regs[R_EB22]  = 0x00;
 118         regs[R_EB22] |= map->rfagc_top;
 119         ret = tda18271_write_regs(fe, R_EB22, 1);
 120         if (tda_fail(ret))
 121                 goto fail;
 122
 123         /* --------------------------------------------------------------- */
 124
 125         /* disable Power Level Indicator */
 126         regs[R_EP1]  |= 0x40;
 127
 128         /* make sure thermometer is off */
 129         regs[R_TM]   &= ~0x10;
 130
 131         /* frequency dependent parameters */
 132
 133         tda18271_calc_ir_measure(fe, &freq);
 134
 135         tda18271_calc_bp_filter(fe, &freq);
 136
 137         tda18271_calc_rf_band(fe, &freq);
 138
 139         tda18271_calc_gain_taper(fe, &freq);
 140
 141         /* --------------------------------------------------------------- */
 142
 143         /* dual tuner and agc1 extra configuration */
 144
 145         switch (priv->role) {
 146         case TDA18271_MASTER:
 147                 regs[R_EB1]  |= 0x04; /* main vco */
 148                 break;
 149         case TDA18271_SLAVE:
 150                 regs[R_EB1]  &= ~0x04; /* cal vco */
 151                 break;
 152         }
 153
 154         /* agc1 always active */
 155         regs[R_EB1]  &= ~0x02;
 156
 157         /* agc1 has priority on agc2 */
 158         regs[R_EB1]  &= ~0x01;
 159
 160         ret = tda18271_write_regs(fe, R_EB1, 1);
 161         if (tda_fail(ret))
 162                 goto fail;
 163
 164         /* --------------------------------------------------------------- */
 165
 166         N = map->if_freq * 1000 + freq;
 167
 168         switch (priv->role) {
 169         case TDA18271_MASTER:
 170                 tda18271_calc_main_pll(fe, N);
 171                 tda18271_set_if_notch(fe);
 172                 tda18271_write_regs(fe, R_MPD, 4);
 173                 break;
 174         case TDA18271_SLAVE:
 175                 tda18271_calc_cal_pll(fe, N);
 176                 tda18271_write_regs(fe, R_CPD, 4);
 177
 178                 regs[R_MPD] = regs[R_CPD] & 0x7f;
 179                 tda18271_set_if_notch(fe);
 180                 tda18271_write_regs(fe, R_MPD, 1);
 181                 break;
 182         }
 183
 184         ret = tda18271_write_regs(fe, R_TM, 7);
 185         if (tda_fail(ret))
 186                 goto fail;
 187
 188         /* force charge pump source */
 189         charge_pump_source(fe, 1);
 190
 191         msleep(1);
 192
 193         /* return pll to normal operation */
 194         charge_pump_source(fe, 0);
 195
 196         msleep(20);
 197
 198         if (priv->id == TDA18271HDC2) {
 199                 /* set rfagc to normal speed mode */
 200                 if (map->fm_rfn)
 201                         regs[R_EP3] &= ~0x04;
 202                 else
 203                         regs[R_EP3] |= 0x04;
 204                 ret = tda18271_write_regs(fe, R_EP3, 1);
 205         }
 206 fail:
 207         return ret;
 208 }
 209
 210 static int tda18271_read_thermometer(struct dvb_frontend *fe)
 211 {
 212         struct tda18271_priv *priv = fe->tuner_priv;
 213         unsigned char *regs = priv->tda18271_regs;
 214         int tm;
 215
 216         /* switch thermometer on */
 217         regs[R_TM]   |= 0x10;
 218         tda18271_write_regs(fe, R_TM, 1);
 219
 220         /* read thermometer info */
 221         tda18271_read_regs(fe);
 222
 223         if ((((regs[R_TM] & 0x0f) == 0x00) && ((regs[R_TM] & 0x20) == 0x20)) ||
 224             (((regs[R_TM] & 0x0f) == 0x08) && ((regs[R_TM] & 0x20) == 0x00))) {
 225
 226                 if ((regs[R_TM] & 0x20) == 0x20)
 227                         regs[R_TM] &= ~0x20;
 228                 else
 229                         regs[R_TM] |= 0x20;
 230
 231                 tda18271_write_regs(fe, R_TM, 1);
 232
 233                 msleep(10); /* temperature sensing */
 234
 235                 /* read thermometer info */
 236                 tda18271_read_regs(fe);
 237         }
 238
 239         tm = tda18271_lookup_thermometer(fe);
 240
 241         /* switch thermometer off */
 242         regs[R_TM]   &= ~0x10;
 243         tda18271_write_regs(fe, R_TM, 1);
 244
 245         /* set CAL mode to normal */
 246         regs[R_EP4]  &= ~0x03;
 247         tda18271_write_regs(fe, R_EP4, 1);
 248
 249         return tm;
 250 }
 251
 252 /* ------------------------------------------------------------------ */
 253
 254 static int tda18271c2_rf_tracking_filters_correction(struct dvb_frontend *fe,
 255                                                      u32 freq)
 256 {
 257         struct tda18271_priv *priv = fe->tuner_priv;
 258         struct tda18271_rf_tracking_filter_cal *map = priv->rf_cal_state;
 259         unsigned char *regs = priv->tda18271_regs;
 260         int i, ret;
 261         u8 tm_current, dc_over_dt, rf_tab;
 262         s32 rfcal_comp, approx;
 263
 264         /* power up */
 265         ret = tda18271_set_standby_mode(fe, 0, 0, 0);
 266         if (tda_fail(ret))
 267                 goto fail;
 268
 269         /* read die current temperature */
 270         tm_current = tda18271_read_thermometer(fe);
 271
 272         /* frequency dependent parameters */
 273
 274         tda18271_calc_rf_cal(fe, &freq);
 275         rf_tab = regs[R_EB14];
 276
 277         i = tda18271_lookup_rf_band(fe, &freq, NULL);
 278         if (tda_fail(i))
 279                 return i;
 280
 281         if ((0 == map[i].rf3) || (freq / 1000 < map[i].rf2)) {
 282                 approx = map[i].rf_a1 * (s32)(freq / 1000 - map[i].rf1) +
 283                         map[i].rf_b1 + rf_tab;
 284         } else {
 285                 approx = map[i].rf_a2 * (s32)(freq / 1000 - map[i].rf2) +
 286                         map[i].rf_b2 + rf_tab;
 287         }
 288
 289         if (approx < 0)
 290                 approx = 0;
 291         if (approx > 255)
 292                 approx = 255;
 293
 294         tda18271_lookup_map(fe, RF_CAL_DC_OVER_DT, &freq, &dc_over_dt);
 295
 296         /* calculate temperature compensation */
 297         rfcal_comp = dc_over_dt * (s32)(tm_current - priv->tm_rfcal) / 1000;
 298
 299         regs[R_EB14] = (unsigned char)(approx + rfcal_comp);
 300         ret = tda18271_write_regs(fe, R_EB14, 1);
 301 fail:
 302         return ret;
 303 }
 304
 305 static int tda18271_por(struct dvb_frontend *fe)
 306 {
 307         struct tda18271_priv *priv = fe->tuner_priv;
 308         unsigned char *regs = priv->tda18271_regs;
 309         int ret;
 310
 311         /* power up detector 1 */
 312         regs[R_EB12] &= ~0x20;
 313         ret = tda18271_write_regs(fe, R_EB12, 1);
 314         if (tda_fail(ret))
 315                 goto fail;
 316
 317         regs[R_EB18] &= ~0x80; /* turn agc1 loop on */
 318         regs[R_EB18] &= ~0x03; /* set agc1_gain to  6 dB */
 319         ret = tda18271_write_regs(fe, R_EB18, 1);
 320         if (tda_fail(ret))
 321                 goto fail;
 322
 323         regs[R_EB21] |= 0x03; /* set agc2_gain to -6 dB */
 324
 325         /* POR mode */
 326         ret = tda18271_set_standby_mode(fe, 1, 0, 0);
 327         if (tda_fail(ret))
 328                 goto fail;
 329
 330         /* disable 1.5 MHz low pass filter */
 331         regs[R_EB23] &= ~0x04; /* forcelp_fc2_en = 0 */
 332         regs[R_EB23] &= ~0x02; /* XXX: lp_fc[2] = 0 */
 333         ret = tda18271_write_regs(fe, R_EB21, 3);
 334 fail:
 335         return ret;
 336 }
 337
 338 static int tda18271_calibrate_rf(struct dvb_frontend *fe, u32 freq)
 339 {
 340         struct tda18271_priv *priv = fe->tuner_priv;
 341         unsigned char *regs = priv->tda18271_regs;
 342         u32 N;
 343
 344         /* set CAL mode to normal */
 345         regs[R_EP4]  &= ~0x03;
 346         tda18271_write_regs(fe, R_EP4, 1);
 347
 348         /* switch off agc1 */
 349         regs[R_EP3]  |= 0x40; /* sm_lt = 1 */
 350
 351         regs[R_EB18] |= 0x03; /* set agc1_gain to 15 dB */
 352         tda18271_write_regs(fe, R_EB18, 1);
 353
 354         /* frequency dependent parameters */
 355
 356         tda18271_calc_bp_filter(fe, &freq);
 357         tda18271_calc_gain_taper(fe, &freq);
 358         tda18271_calc_rf_band(fe, &freq);
 359         tda18271_calc_km(fe, &freq);
 360
 361         tda18271_write_regs(fe, R_EP1, 3);
 362         tda18271_write_regs(fe, R_EB13, 1);
 363
 364         /* main pll charge pump source */
 365         tda18271_charge_pump_source(fe, TDA18271_MAIN_PLL, 1);
 366
 367         /* cal pll charge pump source */
 368         tda18271_charge_pump_source(fe, TDA18271_CAL_PLL, 1);
 369
 370         /* force dcdc converter to 0 V */
 371         regs[R_EB14] = 0x00;
 372         tda18271_write_regs(fe, R_EB14, 1);
 373
 374         /* disable plls lock */
 375         regs[R_EB20] &= ~0x20;
 376         tda18271_write_regs(fe, R_EB20, 1);
 377
 378         /* set CAL mode to RF tracking filter calibration */
 379         regs[R_EP4]  |= 0x03;
 380         tda18271_write_regs(fe, R_EP4, 2);
 381
 382         /* --------------------------------------------------------------- */
 383
 384         /* set the internal calibration signal */
 385         N = freq;
 386
 387         tda18271_calc_cal_pll(fe, N);
 388         tda18271_write_regs(fe, R_CPD, 4);
 389
 390         /* downconvert internal calibration */
 391         N += 1000000;
 392
 393         tda18271_calc_main_pll(fe, N);
 394         tda18271_write_regs(fe, R_MPD, 4);
 395
 396         msleep(5);
 397
 398         tda18271_write_regs(fe, R_EP2, 1);
 399         tda18271_write_regs(fe, R_EP1, 1);
 400         tda18271_write_regs(fe, R_EP2, 1);
 401         tda18271_write_regs(fe, R_EP1, 1);
 402
 403         /* --------------------------------------------------------------- */
 404
 405         /* normal operation for the main pll */
 406         tda18271_charge_pump_source(fe, TDA18271_MAIN_PLL, 0);
 407
 408         /* normal operation for the cal pll  */
 409         tda18271_charge_pump_source(fe, TDA18271_CAL_PLL, 0);
 410
 411         msleep(10); /* plls locking */
 412
 413         /* launch the rf tracking filters calibration */
 414         regs[R_EB20]  |= 0x20;
 415         tda18271_write_regs(fe, R_EB20, 1);
 416
 417         msleep(60); /* calibration */
 418
 419         /* --------------------------------------------------------------- */
 420
 421         /* set CAL mode to normal */
 422         regs[R_EP4]  &= ~0x03;
 423
 424         /* switch on agc1 */
 425         regs[R_EP3]  &= ~0x40; /* sm_lt = 0 */
 426
 427         regs[R_EB18] &= ~0x03; /* set agc1_gain to  6 dB */
 428         tda18271_write_regs(fe, R_EB18, 1);
 429
 430         tda18271_write_regs(fe, R_EP3, 2);
 431
 432         /* synchronization */
 433         tda18271_write_regs(fe, R_EP1, 1);
 434
 435         /* get calibration result */
 436         tda18271_read_extended(fe);
 437
 438         return regs[R_EB14];
 439 }
 440
 441 static int tda18271_powerscan(struct dvb_frontend *fe,
 442                               u32 *freq_in, u32 *freq_out)
 443 {
 444         struct tda18271_priv *priv = fe->tuner_priv;
 445         unsigned char *regs = priv->tda18271_regs;
 446         int sgn, bcal, count, wait, ret;
 447         u8 cid_target;
 448         u16 count_limit;
 449         u32 freq;
 450
 451         freq = *freq_in;
 452
 453         tda18271_calc_rf_band(fe, &freq);
 454         tda18271_calc_rf_cal(fe, &freq);
 455         tda18271_calc_gain_taper(fe, &freq);
 456         tda18271_lookup_cid_target(fe, &freq, &cid_target, &count_limit);
 457
 458         tda18271_write_regs(fe, R_EP2, 1);
 459         tda18271_write_regs(fe, R_EB14, 1);
 460
 461         /* downconvert frequency */
 462         freq += 1000000;
 463
 464         tda18271_calc_main_pll(fe, freq);
 465         tda18271_write_regs(fe, R_MPD, 4);
 466
 467         msleep(5); /* pll locking */
 468
 469         /* detection mode */
 470         regs[R_EP4]  &= ~0x03;
 471         regs[R_EP4]  |= 0x01;
 472         tda18271_write_regs(fe, R_EP4, 1);
 473
 474         /* launch power detection measurement */
 475         tda18271_write_regs(fe, R_EP2, 1);
 476
 477         /* read power detection info, stored in EB10 */
 478         ret = tda18271_read_extended(fe);
 479         if (tda_fail(ret))
 480                 return ret;
 481
 482         /* algorithm initialization */
 483         sgn = 1;
 484         *freq_out = *freq_in;
 485         bcal = 0;
 486         count = 0;
 487         wait = false;
 488
 489         while ((regs[R_EB10] & 0x3f) < cid_target) {
 490                 /* downconvert updated freq to 1 MHz */
 491                 freq = *freq_in + (sgn * count) + 1000000;
 492
 493                 tda18271_calc_main_pll(fe, freq);
 494                 tda18271_write_regs(fe, R_MPD, 4);
 495
 496                 if (wait) {
 497                         msleep(5); /* pll locking */
 498                         wait = false;
 499                 } else
 500                         udelay(100); /* pll locking */
 501
 502                 /* launch power detection measurement */
 503                 tda18271_write_regs(fe, R_EP2, 1);
 504
 505                 /* read power detection info, stored in EB10 */
 506                 ret = tda18271_read_extended(fe);
 507                 if (tda_fail(ret))
 508                         return ret;
 509
 510                 count += 200;
 511
 512                 if (count <= count_limit)
 513                         continue;
 514
 515                 if (sgn <= 0)
 516                         break;
 517
 518                 sgn = -1 * sgn;
 519                 count = 200;
 520                 wait = true;
 521         }
 522
 523         if ((regs[R_EB10] & 0x3f) >= cid_target) {
 524                 bcal = 1;
 525                 *freq_out = freq - 1000000;
 526         } else
 527                 bcal = 0;
 528
 529         tda_cal("bcal = %d, freq_in = %d, freq_out = %d (freq = %d)\n",
 530                 bcal, *freq_in, *freq_out, freq);
 531
 532         return bcal;
 533 }
 534
 535 static int tda18271_powerscan_init(struct dvb_frontend *fe)
 536 {
 537         struct tda18271_priv *priv = fe->tuner_priv;
 538         unsigned char *regs = priv->tda18271_regs;
 539         int ret;
 540
 541         /* set standard to digital */
 542         regs[R_EP3]  &= ~0x1f; /* clear std bits */
 543         regs[R_EP3]  |= 0x12;
 544
 545         /* set cal mode to normal */
 546         regs[R_EP4]  &= ~0x03;
 547
 548         /* update IF output level */
 549         regs[R_EP4]  &= ~0x1c; /* clear if level bits */
 550
 551         ret = tda18271_write_regs(fe, R_EP3, 2);
 552         if (tda_fail(ret))
 553                 goto fail;
 554
 555         regs[R_EB18] &= ~0x03; /* set agc1_gain to   6 dB */
 556         ret = tda18271_write_regs(fe, R_EB18, 1);
 557         if (tda_fail(ret))
 558                 goto fail;
 559
 560         regs[R_EB21] &= ~0x03; /* set agc2_gain to -15 dB */
 561
 562         /* 1.5 MHz low pass filter */
 563         regs[R_EB23] |= 0x04; /* forcelp_fc2_en = 1 */
 564         regs[R_EB23] |= 0x02; /* lp_fc[2] = 1 */
 565
 566         ret = tda18271_write_regs(fe, R_EB21, 3);
 567 fail:
 568         return ret;
 569 }
 570
 571 static int tda18271_rf_tracking_filters_init(struct dvb_frontend *fe, u32 freq)
 572 {
 573         struct tda18271_priv *priv = fe->tuner_priv;
 574         struct tda18271_rf_tracking_filter_cal *map = priv->rf_cal_state;
 575         unsigned char *regs = priv->tda18271_regs;
 576         int bcal, rf, i;
 577         s32 divisor, dividend;
 578 #define RF1 0
 579 #define RF2 1
 580 #define RF3 2
 581         u32 rf_default[3];
 582         u32 rf_freq[3];
 583         s32 prog_cal[3];
 584         s32 prog_tab[3];
 585
 586         i = tda18271_lookup_rf_band(fe, &freq, NULL);
 587
 588         if (tda_fail(i))
 589                 return i;
 590
 591         rf_default[RF1] = 1000 * map[i].rf1_def;
 592         rf_default[RF2] = 1000 * map[i].rf2_def;
 593         rf_default[RF3] = 1000 * map[i].rf3_def;
 594
 595         for (rf = RF1; rf <= RF3; rf++) {
 596                 if (0 == rf_default[rf])
 597                         return 0;
 598                 tda_cal("freq = %d, rf = %d\n", freq, rf);
 599
 600                 /* look for optimized calibration frequency */
 601                 bcal = tda18271_powerscan(fe, &rf_default[rf], &rf_freq[rf]);
 602                 if (tda_fail(bcal))
 603                         return bcal;
 604
 605                 tda18271_calc_rf_cal(fe, &rf_freq[rf]);
 606                 prog_tab[rf] = (s32)regs[R_EB14];
 607
 608                 if (1 == bcal)
 609                         prog_cal[rf] =
 610                                 (s32)tda18271_calibrate_rf(fe, rf_freq[rf]);
 611                 else
 612                         prog_cal[rf] = prog_tab[rf];
 613
 614                 switch (rf) {
 615                 case RF1:
 616                         map[i].rf_a1 = 0;
 617                         map[i].rf_b1 = (prog_cal[RF1] - prog_tab[RF1]);
 618                         map[i].rf1   = rf_freq[RF1] / 1000;
 619                         break;
 620                 case RF2:
 621                         dividend = (prog_cal[RF2] - prog_tab[RF2] -
 622                                     prog_cal[RF1] + prog_tab[RF1]);
 623                         divisor = (s32)(rf_freq[RF2] - rf_freq[RF1]) / 1000;
 624                         map[i].rf_a1 = (dividend / divisor);
 625                         map[i].rf2   = rf_freq[RF2] / 1000;
 626                         break;
 627                 case RF3:
 628                         dividend = (prog_cal[RF3] - prog_tab[RF3] -
 629                                     prog_cal[RF2] + prog_tab[RF2]);
 630                         divisor = (s32)(rf_freq[RF3] - rf_freq[RF2]) / 1000;
 631                         map[i].rf_a2 = (dividend / divisor);
 632                         map[i].rf_b2 = (prog_cal[RF2] - prog_tab[RF2]);
 633                         map[i].rf3   = rf_freq[RF3] / 1000;
 634                         break;
 635                 default:
 636                         BUG();
 637                 }
 638         }
 639
 640         return 0;
 641 }
 642
 643 static int tda18271_calc_rf_filter_curve(struct dvb_frontend *fe)
 644 {
 645         struct tda18271_priv *priv = fe->tuner_priv;
 646         unsigned int i;
 647         int ret;
 648
 649         tda_info("tda18271: performing RF tracking filter calibration\n");
 650
 651         /* wait for die temperature stabilization */
 652         msleep(200);
 653
 654         ret = tda18271_powerscan_init(fe);
 655         if (tda_fail(ret))
 656                 goto fail;
 657
 658         /* rf band calibration */
 659         for (i = 0; priv->rf_cal_state[i].rfmax != 0; i++) {
 660                 ret =
 661                 tda18271_rf_tracking_filters_init(fe, 1000 *
 662                                                   priv->rf_cal_state[i].rfmax);
 663                 if (tda_fail(ret))
 664                         goto fail;
 665         }
 666
 667         priv->tm_rfcal = tda18271_read_thermometer(fe);
 668 fail:
 669         return ret;
 670 }
 671
 672 /* ------------------------------------------------------------------ */
 673
 674 static int tda18271c2_rf_cal_init(struct dvb_frontend *fe)
 675 {
 676         struct tda18271_priv *priv = fe->tuner_priv;
 677         unsigned char *regs = priv->tda18271_regs;
 678         int ret;
 679
 680         /* test RF_CAL_OK to see if we need init */
 681         if ((regs[R_EP1] & 0x10) == 0)
 682                 priv->cal_initialized = false;
 683
 684         if (priv->cal_initialized)
 685                 return 0;
 686
 687         ret = tda18271_calc_rf_filter_curve(fe);
 688         if (tda_fail(ret))
 689                 goto fail;
 690
 691         ret = tda18271_por(fe);
 692         if (tda_fail(ret))
 693                 goto fail;
 694
 695         tda_info("tda18271: RF tracking filter calibration complete\n");
 696
 697         priv->cal_initialized = true;
 698         goto end;
 699 fail:
 700         tda_info("tda18271: RF tracking filter calibration failed!\n");
 701 end:
 702         return ret;
 703 }
 704
 705 static int tda18271c1_rf_tracking_filter_calibration(struct dvb_frontend *fe,
 706                                                      u32 freq, u32 bw)
 707 {
 708         struct tda18271_priv *priv = fe->tuner_priv;
 709         unsigned char *regs = priv->tda18271_regs;
 710         int ret;
 711         u32 N = 0;
 712
 713         /* calculate bp filter */
 714         tda18271_calc_bp_filter(fe, &freq);
 715         tda18271_write_regs(fe, R_EP1, 1);
 716
 717         regs[R_EB4]  &= 0x07;
 718         regs[R_EB4]  |= 0x60;
 719         tda18271_write_regs(fe, R_EB4, 1);
 720
 721         regs[R_EB7]   = 0x60;
 722         tda18271_write_regs(fe, R_EB7, 1);
 723
 724         regs[R_EB14]  = 0x00;
 725         tda18271_write_regs(fe, R_EB14, 1);
 726
 727         regs[R_EB20]  = 0xcc;
 728         tda18271_write_regs(fe, R_EB20, 1);
 729
 730         /* set cal mode to RF tracking filter calibration */
 731         regs[R_EP4]  |= 0x03;
 732
 733         /* calculate cal pll */
 734
 735         switch (priv->mode) {
 736         case TDA18271_ANALOG:
 737                 N = freq - 1250000;
 738                 break;
 739         case TDA18271_DIGITAL:
 740                 N = freq + bw / 2;
 741                 break;
 742         }
 743
 744         tda18271_calc_cal_pll(fe, N);
 745
 746         /* calculate main pll */
 747
 748         switch (priv->mode) {
 749         case TDA18271_ANALOG:
 750                 N = freq - 250000;
 751                 break;
 752         case TDA18271_DIGITAL:
 753                 N = freq + bw / 2 + 1000000;
 754                 break;
 755         }
 756
 757         tda18271_calc_main_pll(fe, N);
 758
 759         ret = tda18271_write_regs(fe, R_EP3, 11);
 760         if (tda_fail(ret))
 761                 return ret;
 762
 763         msleep(5); /* RF tracking filter calibration initialization */
 764
 765         /* search for K,M,CO for RF calibration */
 766         tda18271_calc_km(fe, &freq);
 767         tda18271_write_regs(fe, R_EB13, 1);
 768
 769         /* search for rf band */
 770         tda18271_calc_rf_band(fe, &freq);
 771
 772         /* search for gain taper */
 773         tda18271_calc_gain_taper(fe, &freq);
 774
 775         tda18271_write_regs(fe, R_EP2, 1);
 776         tda18271_write_regs(fe, R_EP1, 1);
 777         tda18271_write_regs(fe, R_EP2, 1);
 778         tda18271_write_regs(fe, R_EP1, 1);
 779
 780         regs[R_EB4]  &= 0x07;
 781         regs[R_EB4]  |= 0x40;
 782         tda18271_write_regs(fe, R_EB4, 1);
 783
 784         regs[R_EB7]   = 0x40;
 785         tda18271_write_regs(fe, R_EB7, 1);
 786         msleep(10); /* pll locking */
 787
 788         regs[R_EB20]  = 0xec;
 789         tda18271_write_regs(fe, R_EB20, 1);
 790         msleep(60); /* RF tracking filter calibration completion */
 791
 792         regs[R_EP4]  &= ~0x03; /* set cal mode to normal */
 793         tda18271_write_regs(fe, R_EP4, 1);
 794
 795         tda18271_write_regs(fe, R_EP1, 1);
 796
 797         /* RF tracking filter correction for VHF_Low band */
 798         if (0 == tda18271_calc_rf_cal(fe, &freq))
 799                 tda18271_write_regs(fe, R_EB14, 1);
 800
 801         return 0;
 802 }
 803
 804 /* ------------------------------------------------------------------ */
 805
 806 static int tda18271_ir_cal_init(struct dvb_frontend *fe)
 807 {
 808         struct tda18271_priv *priv = fe->tuner_priv;
 809         unsigned char *regs = priv->tda18271_regs;
 810         int ret;
 811
 812         ret = tda18271_read_regs(fe);
 813         if (tda_fail(ret))
 814                 goto fail;
 815
 816         /* test IR_CAL_OK to see if we need init */
 817         if ((regs[R_EP1] & 0x08) == 0)
 818                 ret = tda18271_init_regs(fe);
 819 fail:
 820         return ret;
 821 }
 822
 823 static int tda18271_init(struct dvb_frontend *fe)
 824 {
 825         struct tda18271_priv *priv = fe->tuner_priv;
 826         int ret;
 827
 828         mutex_lock(&priv->lock);
 829
 830         /* full power up */
 831         ret = tda18271_set_standby_mode(fe, 0, 0, 0);
 832         if (tda_fail(ret))
 833                 goto fail;
 834
 835         /* initialization */
 836         ret = tda18271_ir_cal_init(fe);
 837         if (tda_fail(ret))
 838                 goto fail;
 839
 840         if (priv->id == TDA18271HDC2)
 841                 tda18271c2_rf_cal_init(fe);
 842 fail:
 843         mutex_unlock(&priv->lock);
 844
 845         return ret;
 846 }
 847
 848 static int tda18271_sleep(struct dvb_frontend *fe)
 849 {
 850         struct tda18271_priv *priv = fe->tuner_priv;
 851         int ret;
 852
 853         mutex_lock(&priv->lock);
 854
 855         /* enter standby mode, with required output features enabled */
 856         ret = tda18271_toggle_output(fe, 1);
 857
 858         mutex_unlock(&priv->lock);
 859
 860         return ret;
 861 }
 862
 863 /* ------------------------------------------------------------------ */
 864
 865 static int tda18271_agc(struct dvb_frontend *fe)
 866 {
 867         struct tda18271_priv *priv = fe->tuner_priv;
 868         int ret = 0;
 869
 870         switch (priv->config) {
 871         case TDA8290_LNA_OFF:
 872                 /* no external agc configuration required */
 873                 if (tda18271_debug & DBG_ADV)
 874                         tda_dbg("no agc configuration provided\n");
 875                 break;
 876         case TDA8290_LNA_ON_BRIDGE:
 877                 /* switch with GPIO of saa713x */
 878                 tda_dbg("invoking callback\n");
 879                 if (fe->callback)
 880                         ret = fe->callback(priv->i2c_props.adap->algo_data,
 881                                            DVB_FRONTEND_COMPONENT_TUNER,
 882                                            TDA18271_CALLBACK_CMD_AGC_ENABLE,
 883                                            priv->mode);
 884                 break;
 885         case TDA8290_LNA_GP0_HIGH_ON:
 886         case TDA8290_LNA_GP0_HIGH_OFF:
 887         default:
 888                 /* n/a - currently not supported */
 889                 tda_err("unsupported configuration: %d\n", priv->config);
 890                 ret = -EINVAL;
 891                 break;
 892         }
 893         return ret;
 894 }
 895
 896 static int tda18271_tune(struct dvb_frontend *fe,
 897                          struct tda18271_std_map_item *map, u32 freq, u32 bw)
 898 {
 899         struct tda18271_priv *priv = fe->tuner_priv;
 900         int ret;
 901
 902         tda_dbg("freq = %d, ifc = %d, bw = %d, agc_mode = %d, std = %d\n",
 903                 freq, map->if_freq, bw, map->agc_mode, map->std);
 904
 905         ret = tda18271_agc(fe);
 906         if (tda_fail(ret))
 907                 tda_warn("failed to configure agc\n");
 908
 909         ret = tda18271_init(fe);
 910         if (tda_fail(ret))
 911                 goto fail;
 912
 913         mutex_lock(&priv->lock);
 914
 915         switch (priv->id) {
 916         case TDA18271HDC1:
 917                 tda18271c1_rf_tracking_filter_calibration(fe, freq, bw);
 918                 break;
 919         case TDA18271HDC2:
 920                 tda18271c2_rf_tracking_filters_correction(fe, freq);
 921                 break;
 922         }
 923         ret = tda18271_channel_configuration(fe, map, freq, bw);
 924
 925         mutex_unlock(&priv->lock);
 926 fail:
 927         return ret;
 928 }
 929
 930 /* ------------------------------------------------------------------ */
 931
 932 static int tda18271_set_params(struct dvb_frontend *fe)
 933 {
 934         struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 935         u32 delsys = c->delivery_system;
 936         u32 bw = c->bandwidth_hz;
 937         u32 freq = c->frequency;
 938         struct tda18271_priv *priv = fe->tuner_priv;
 939         struct tda18271_std_map *std_map = &priv->std;
 940         struct tda18271_std_map_item *map;
 941         int ret;
 942
 943         priv->mode = TDA18271_DIGITAL;
 944
 945         switch (delsys) {
 946         case SYS_ATSC:
 947                 map = &std_map->atsc_6;
 948                 bw = 6000000;
 949                 break;
 950         case SYS_ISDBT:
 951         case SYS_DVBT:
 952         case SYS_DVBT2:
 953                 if (bw <= 6000000) {
 954                         map = &std_map->dvbt_6;
 955                 } else if (bw <= 7000000) {
 956                         map = &std_map->dvbt_7;
 957                 } else {
 958                         map = &std_map->dvbt_8;
 959                 }
 960                 break;
 961         case SYS_DVBC_ANNEX_B:
 962                 bw = 6000000;
 963                 /* falltrough */
 964         case SYS_DVBC_ANNEX_A:
 965         case SYS_DVBC_ANNEX_C:
 966                 if (bw <= 6000000) {
 967                         map = &std_map->qam_6;
 968                 } else if (bw <= 7000000) {
 969                         map = &std_map->qam_7;
 970                 } else {
 971                         map = &std_map->qam_8;
 972                 }
 973                 break;
 974         default:
 975                 tda_warn("modulation type not supported!\n");
 976                 return -EINVAL;
 977         }
 978
 979         /* When tuning digital, the analog demod must be tri-stated */
 980         if (fe->ops.analog_ops.standby)
 981                 fe->ops.analog_ops.standby(fe);
 982
 983         ret = tda18271_tune(fe, map, freq, bw);
 984
 985         if (tda_fail(ret))
 986                 goto fail;
 987
 988         priv->if_freq   = map->if_freq;
 989         priv->frequency = freq;
 990         priv->bandwidth = bw;
 991 fail:
 992         return ret;
 993 }
 994
 995 static int tda18271_set_analog_params(struct dvb_frontend *fe,
 996                                       struct analog_parameters *params)
 997 {
 998         struct tda18271_priv *priv = fe->tuner_priv;
 999         struct tda18271_std_map *std_map = &priv->std;
1000         struct tda18271_std_map_item *map;
1001         char *mode;
1002         int ret;
1003         u32 freq = params->frequency * 125 *
1004                 ((params->mode == V4L2_TUNER_RADIO) ? 1 : 1000) / 2;
1005
1006         priv->mode = TDA18271_ANALOG;
1007
1008         if (params->mode == V4L2_TUNER_RADIO) {
1009                 map = &std_map->fm_radio;
1010                 mode = "fm";
1011         } else if (params->std & V4L2_STD_MN) {
1012                 map = &std_map->atv_mn;
1013                 mode = "MN";
1014         } else if (params->std & V4L2_STD_B) {
1015                 map = &std_map->atv_b;
1016                 mode = "B";
1017         } else if (params->std & V4L2_STD_GH) {
1018                 map = &std_map->atv_gh;
1019                 mode = "GH";
1020         } else if (params->std & V4L2_STD_PAL_I) {
1021                 map = &std_map->atv_i;
1022                 mode = "I";
1023         } else if (params->std & V4L2_STD_DK) {
1024                 map = &std_map->atv_dk;
1025                 mode = "DK";
1026         } else if (params->std & V4L2_STD_SECAM_L) {
1027                 map = &std_map->atv_l;
1028                 mode = "L";
1029         } else if (params->std & V4L2_STD_SECAM_LC) {
1030                 map = &std_map->atv_lc;
1031                 mode = "L'";
1032         } else {
1033                 map = &std_map->atv_i;
1034                 mode = "xx";
1035         }
1036
1037         tda_dbg("setting tda18271 to system %s\n", mode);
1038
1039         ret = tda18271_tune(fe, map, freq, 0);
1040
1041         if (tda_fail(ret))
1042                 goto fail;
1043
1044         priv->if_freq   = map->if_freq;
1045         priv->frequency = freq;
1046         priv->bandwidth = 0;
1047 fail:
1048         return ret;
1049 }
1050
1051 static int tda18271_release(struct dvb_frontend *fe)
1052 {
1053         struct tda18271_priv *priv = fe->tuner_priv;
1054
1055         mutex_lock(&tda18271_list_mutex);
1056
1057         if (priv)
1058                 hybrid_tuner_release_state(priv);
1059
1060         mutex_unlock(&tda18271_list_mutex);
1061
1062         fe->tuner_priv = NULL;
1063
1064         return 0;
1065 }
1066
1067 static int tda18271_get_frequency(struct dvb_frontend *fe, u32 *frequency)
1068 {
1069         struct tda18271_priv *priv = fe->tuner_priv;
1070         *frequency = priv->frequency;
1071         return 0;
1072 }
1073
1074 static int tda18271_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
1075 {
1076         struct tda18271_priv *priv = fe->tuner_priv;
1077         *bandwidth = priv->bandwidth;
1078         return 0;
1079 }
1080
1081 static int tda18271_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
1082 {
1083         struct tda18271_priv *priv = fe->tuner_priv;
1084         *frequency = (u32)priv->if_freq * 1000;
1085         return 0;
1086 }
1087
1088 /* ------------------------------------------------------------------ */
1089
1090 #define tda18271_update_std(std_cfg, name) do {                         \
1091         if (map->std_cfg.if_freq +                                      \
1092                 map->std_cfg.agc_mode + map->std_cfg.std +              \
1093                 map->std_cfg.if_lvl + map->std_cfg.rfagc_top > 0) {     \
1094                 tda_dbg("Using custom std config for %s\n", name);      \
1095                 memcpy(&std->std_cfg, &map->std_cfg,                    \
1096                         sizeof(struct tda18271_std_map_item));          \
1097         } } while (0)
1098
1099 #define tda18271_dump_std_item(std_cfg, name) do {                      \
1100         tda_dbg("(%s) if_freq = %d, agc_mode = %d, std = %d, "          \
1101                 "if_lvl = %d, rfagc_top = 0x%02x\n",                    \
1102                 name, std->std_cfg.if_freq,                             \
1103                 std->std_cfg.agc_mode, std->std_cfg.std,                \
1104                 std->std_cfg.if_lvl, std->std_cfg.rfagc_top);           \
1105         } while (0)
1106
1107 static int tda18271_dump_std_map(struct dvb_frontend *fe)
1108 {
1109         struct tda18271_priv *priv = fe->tuner_priv;
1110         struct tda18271_std_map *std = &priv->std;
1111
1112         tda_dbg("========== STANDARD MAP SETTINGS ==========\n");
1113         tda18271_dump_std_item(fm_radio, "  fm  ");
1114         tda18271_dump_std_item(atv_b,  "atv b ");
1115         tda18271_dump_std_item(atv_dk, "atv dk");
1116         tda18271_dump_std_item(atv_gh, "atv gh");
1117         tda18271_dump_std_item(atv_i,  "atv i ");
1118         tda18271_dump_std_item(atv_l,  "atv l ");
1119         tda18271_dump_std_item(atv_lc, "atv l'");
1120         tda18271_dump_std_item(atv_mn, "atv mn");
1121         tda18271_dump_std_item(atsc_6, "atsc 6");
1122         tda18271_dump_std_item(dvbt_6, "dvbt 6");
1123         tda18271_dump_std_item(dvbt_7, "dvbt 7");
1124         tda18271_dump_std_item(dvbt_8, "dvbt 8");
1125         tda18271_dump_std_item(qam_6,  "qam 6 ");
1126         tda18271_dump_std_item(qam_7,  "qam 7 ");
1127         tda18271_dump_std_item(qam_8,  "qam 8 ");
1128
1129         return 0;
1130 }
1131
1132 static int tda18271_update_std_map(struct dvb_frontend *fe,
1133                                    struct tda18271_std_map *map)
1134 {
1135         struct tda18271_priv *priv = fe->tuner_priv;
1136         struct tda18271_std_map *std = &priv->std;
1137
1138         if (!map)
1139                 return -EINVAL;
1140
1141         tda18271_update_std(fm_radio, "fm");
1142         tda18271_update_std(atv_b,  "atv b");
1143         tda18271_update_std(atv_dk, "atv dk");
1144         tda18271_update_std(atv_gh, "atv gh");
1145         tda18271_update_std(atv_i,  "atv i");
1146         tda18271_update_std(atv_l,  "atv l");
1147         tda18271_update_std(atv_lc, "atv l'");
1148         tda18271_update_std(atv_mn, "atv mn");
1149         tda18271_update_std(atsc_6, "atsc 6");
1150         tda18271_update_std(dvbt_6, "dvbt 6");
1151         tda18271_update_std(dvbt_7, "dvbt 7");
1152         tda18271_update_std(dvbt_8, "dvbt 8");
1153         tda18271_update_std(qam_6,  "qam 6");
1154         tda18271_update_std(qam_7,  "qam 7");
1155         tda18271_update_std(qam_8,  "qam 8");
1156
1157         return 0;
1158 }
1159
1160 static int tda18271_get_id(struct dvb_frontend *fe)
1161 {
1162         struct tda18271_priv *priv = fe->tuner_priv;
1163         unsigned char *regs = priv->tda18271_regs;
1164         char *name;
1165         int ret;
1166
1167         mutex_lock(&priv->lock);
1168         ret = tda18271_read_regs(fe);
1169         mutex_unlock(&priv->lock);
1170
1171         if (ret) {
1172                 tda_info("Error reading device ID @ %d-%04x, bailing out.\n",
1173                          i2c_adapter_id(priv->i2c_props.adap),
1174                          priv->i2c_props.addr);
1175                 return -EIO;
1176         }
1177
1178         switch (regs[R_ID] & 0x7f) {
1179         case 3:
1180                 name = "TDA18271HD/C1";
1181                 priv->id = TDA18271HDC1;
1182                 break;
1183         case 4:
1184                 name = "TDA18271HD/C2";
1185                 priv->id = TDA18271HDC2;
1186                 break;
1187         default:
1188                 tda_info("Unknown device (%i) detected @ %d-%04x, device not supported.\n",
1189                          regs[R_ID], i2c_adapter_id(priv->i2c_props.adap),
1190                          priv->i2c_props.addr);
1191                 return -EINVAL;
1192         }
1193
1194         tda_info("%s detected @ %d-%04x\n", name,
1195                  i2c_adapter_id(priv->i2c_props.adap), priv->i2c_props.addr);
1196
1197         return 0;
1198 }
1199
1200 static int tda18271_setup_configuration(struct dvb_frontend *fe,
1201                                         struct tda18271_config *cfg)
1202 {
1203         struct tda18271_priv *priv = fe->tuner_priv;
1204
1205         priv->gate = (cfg) ? cfg->gate : TDA18271_GATE_AUTO;
1206         priv->role = (cfg) ? cfg->role : TDA18271_MASTER;
1207         priv->config = (cfg) ? cfg->config : 0;
1208         priv->small_i2c = (cfg) ?
1209                 cfg->small_i2c : TDA18271_39_BYTE_CHUNK_INIT;
1210         priv->output_opt = (cfg) ?
1211                 cfg->output_opt : TDA18271_OUTPUT_LT_XT_ON;
1212
1213         return 0;
1214 }
1215
1216 static inline int tda18271_need_cal_on_startup(struct tda18271_config *cfg)
1217 {
1218         /* tda18271_cal_on_startup == -1 when cal module option is unset */
1219         return ((tda18271_cal_on_startup == -1) ?
1220                 /* honor configuration setting */
1221                 ((cfg) && (cfg->rf_cal_on_startup)) :
1222                 /* module option overrides configuration setting */
1223                 (tda18271_cal_on_startup)) ? 1 : 0;
1224 }
1225
1226 static int tda18271_set_config(struct dvb_frontend *fe, void *priv_cfg)
1227 {
1228         struct tda18271_config *cfg = (struct tda18271_config *) priv_cfg;
1229
1230         tda18271_setup_configuration(fe, cfg);
1231
1232         if (tda18271_need_cal_on_startup(cfg))
1233                 tda18271_init(fe);
1234
1235         /* override default std map with values in config struct */
1236         if ((cfg) && (cfg->std_map))
1237                 tda18271_update_std_map(fe, cfg->std_map);
1238
1239         return 0;
1240 }
1241
1242 static const struct dvb_tuner_ops tda18271_tuner_ops = {
1243         .info = {
1244                 .name = "NXP TDA18271HD",
1245                 .frequency_min  =  45000000,
1246                 .frequency_max  = 864000000,
1247                 .frequency_step =     62500
1248         },
1249         .init              = tda18271_init,
1250         .sleep             = tda18271_sleep,
1251         .set_params        = tda18271_set_params,
1252         .set_analog_params = tda18271_set_analog_params,
1253         .release           = tda18271_release,
1254         .set_config        = tda18271_set_config,
1255         .get_frequency     = tda18271_get_frequency,
1256         .get_bandwidth     = tda18271_get_bandwidth,
1257         .get_if_frequency  = tda18271_get_if_frequency,
1258 };
1259
1260 struct dvb_frontend *tda18271_attach(struct dvb_frontend *fe, u8 addr,
1261                                      struct i2c_adapter *i2c,
1262                                      struct tda18271_config *cfg)
1263 {
1264         struct tda18271_priv *priv = NULL;
1265         int instance, ret;
1266
1267         mutex_lock(&tda18271_list_mutex);
1268
1269         instance = hybrid_tuner_request_state(struct tda18271_priv, priv,
1270                                               hybrid_tuner_instance_list,
1271                                               i2c, addr, "tda18271");
1272         switch (instance) {
1273         case 0:
1274                 goto fail;
1275         case 1:
1276                 /* new tuner instance */
1277                 fe->tuner_priv = priv;
1278
1279                 tda18271_setup_configuration(fe, cfg);
1280
1281                 priv->cal_initialized = false;
1282                 mutex_init(&priv->lock);
1283
1284                 ret = tda18271_get_id(fe);
1285                 if (tda_fail(ret))
1286                         goto fail;
1287
1288                 ret = tda18271_assign_map_layout(fe);
1289                 if (tda_fail(ret))
1290                         goto fail;
1291
1292                 /* if delay_cal is set, delay IR & RF calibration until init()
1293                  * module option 'cal' overrides this delay */
1294                 if ((cfg->delay_cal) && (!tda18271_need_cal_on_startup(cfg)))
1295                         break;
1296
1297                 mutex_lock(&priv->lock);
1298                 tda18271_init_regs(fe);
1299
1300                 if ((tda18271_need_cal_on_startup(cfg)) &&
1301                     (priv->id == TDA18271HDC2))
1302                         tda18271c2_rf_cal_init(fe);
1303
1304                 /* enter standby mode, with required output features enabled */
1305                 ret = tda18271_toggle_output(fe, 1);
1306                 tda_fail(ret);
1307
1308                 mutex_unlock(&priv->lock);
1309                 break;
1310         default:
1311                 /* existing tuner instance */
1312                 fe->tuner_priv = priv;
1313
1314                 /* allow dvb driver to override configuration settings */
1315                 if (cfg) {
1316                         if (cfg->gate != TDA18271_GATE_ANALOG)
1317                                 priv->gate = cfg->gate;
1318                         if (cfg->role)
1319                                 priv->role = cfg->role;
1320                         if (cfg->config)
1321                                 priv->config = cfg->config;
1322                         if (cfg->small_i2c)
1323                                 priv->small_i2c = cfg->small_i2c;
1324                         if (cfg->output_opt)
1325                                 priv->output_opt = cfg->output_opt;
1326                         if (cfg->std_map)
1327                                 tda18271_update_std_map(fe, cfg->std_map);
1328                 }
1329                 if (tda18271_need_cal_on_startup(cfg))
1330                         tda18271_init(fe);
1331                 break;
1332         }
1333
1334         /* override default std map with values in config struct */
1335         if ((cfg) && (cfg->std_map))
1336                 tda18271_update_std_map(fe, cfg->std_map);
1337
1338         mutex_unlock(&tda18271_list_mutex);
1339
1340         memcpy(&fe->ops.tuner_ops, &tda18271_tuner_ops,
1341                sizeof(struct dvb_tuner_ops));
1342
1343         if (tda18271_debug & (DBG_MAP | DBG_ADV))
1344                 tda18271_dump_std_map(fe);
1345
1346         return fe;
1347 fail:
1348         mutex_unlock(&tda18271_list_mutex);
1349
1350         tda18271_release(fe);
1351         return NULL;
1352 }
1353 EXPORT_SYMBOL_GPL(tda18271_attach);
1354 MODULE_DESCRIPTION("NXP TDA18271HD analog / digital tuner driver");
1355 MODULE_AUTHOR("Michael Krufky <mkrufky@linuxtv.org>");
1356 MODULE_LICENSE("GPL");
1357 MODULE_VERSION("0.4");