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   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;
  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 inline int charge_pump_source(struct dvb_frontend *fe, int force)
  40 {
  41         struct tda18271_priv *priv = fe->tuner_priv;
  42         return tda18271_charge_pump_source(fe,
  43                                            (priv->role == TDA18271_SLAVE) ?
  44                                            TDA18271_CAL_PLL :
  45                                            TDA18271_MAIN_PLL, force);
  46 }
  47
  48 static int tda18271_channel_configuration(struct dvb_frontend *fe,
  49                                           struct tda18271_std_map_item *map,
  50                                           u32 freq, u32 bw)
  51 {
  52         struct tda18271_priv *priv = fe->tuner_priv;
  53         unsigned char *regs = priv->tda18271_regs;
  54         int ret;
  55         u32 N;
  56
  57         /* update TV broadcast parameters */
  58
  59         /* set standard */
  60         regs[R_EP3]  &= ~0x1f; /* clear std bits */
  61         regs[R_EP3]  |= (map->agc_mode << 3) | map->std;
  62
  63         /* set rfagc to high speed mode */
  64         regs[R_EP3] &= ~0x04;
  65
  66         /* set cal mode to normal */
  67         regs[R_EP4]  &= ~0x03;
  68
  69         /* update IF output level & IF notch frequency */
  70         regs[R_EP4]  &= ~0x1c; /* clear if level bits */
  71         regs[R_EP4]  |= (map->if_lvl << 2);
  72
  73         switch (priv->mode) {
  74         case TDA18271_ANALOG:
  75                 regs[R_MPD]  &= ~0x80; /* IF notch = 0 */
  76                 break;
  77         case TDA18271_DIGITAL:
  78                 regs[R_MPD]  |= 0x80; /* IF notch = 1 */
  79                 break;
  80         }
  81
  82         /* update FM_RFn */
  83         regs[R_EP4]  &= ~0x80;
  84         regs[R_EP4]  |= map->fm_rfn << 7;
  85
  86         /* update rf top / if top */
  87         regs[R_EB22]  = 0x00;
  88         regs[R_EB22] |= map->rfagc_top;
  89         ret = tda18271_write_regs(fe, R_EB22, 1);
  90         if (tda_fail(ret))
  91                 goto fail;
  92
  93         /* --------------------------------------------------------------- */
  94
  95         /* disable Power Level Indicator */
  96         regs[R_EP1]  |= 0x40;
  97
  98         /* frequency dependent parameters */
  99
 100         tda18271_calc_ir_measure(fe, &freq);
 101
 102         tda18271_calc_bp_filter(fe, &freq);
 103
 104         tda18271_calc_rf_band(fe, &freq);
 105
 106         tda18271_calc_gain_taper(fe, &freq);
 107
 108         /* --------------------------------------------------------------- */
 109
 110         /* dual tuner and agc1 extra configuration */
 111
 112         switch (priv->role) {
 113         case TDA18271_MASTER:
 114                 regs[R_EB1]  |= 0x04; /* main vco */
 115                 break;
 116         case TDA18271_SLAVE:
 117                 regs[R_EB1]  &= ~0x04; /* cal vco */
 118                 break;
 119         }
 120
 121         /* agc1 always active */
 122         regs[R_EB1]  &= ~0x02;
 123
 124         /* agc1 has priority on agc2 */
 125         regs[R_EB1]  &= ~0x01;
 126
 127         ret = tda18271_write_regs(fe, R_EB1, 1);
 128         if (tda_fail(ret))
 129                 goto fail;
 130
 131         /* --------------------------------------------------------------- */
 132
 133         N = map->if_freq * 1000 + freq;
 134
 135         switch (priv->role) {
 136         case TDA18271_MASTER:
 137                 tda18271_calc_main_pll(fe, N);
 138                 tda18271_write_regs(fe, R_MPD, 4);
 139                 break;
 140         case TDA18271_SLAVE:
 141                 tda18271_calc_cal_pll(fe, N);
 142                 tda18271_write_regs(fe, R_CPD, 4);
 143
 144                 regs[R_MPD] = regs[R_CPD] & 0x7f;
 145                 tda18271_write_regs(fe, R_MPD, 1);
 146                 break;
 147         }
 148
 149         ret = tda18271_write_regs(fe, R_TM, 7);
 150         if (tda_fail(ret))
 151                 goto fail;
 152
 153         /* force charge pump source */
 154         charge_pump_source(fe, 1);
 155
 156         msleep(1);
 157
 158         /* return pll to normal operation */
 159         charge_pump_source(fe, 0);
 160
 161         msleep(20);
 162
 163         /* set rfagc to normal speed mode */
 164         if (map->fm_rfn)
 165                 regs[R_EP3] &= ~0x04;
 166         else
 167                 regs[R_EP3] |= 0x04;
 168         ret = tda18271_write_regs(fe, R_EP3, 1);
 169 fail:
 170         return ret;
 171 }
 172
 173 static int tda18271_read_thermometer(struct dvb_frontend *fe)
 174 {
 175         struct tda18271_priv *priv = fe->tuner_priv;
 176         unsigned char *regs = priv->tda18271_regs;
 177         int tm;
 178
 179         /* switch thermometer on */
 180         regs[R_TM]   |= 0x10;
 181         tda18271_write_regs(fe, R_TM, 1);
 182
 183         /* read thermometer info */
 184         tda18271_read_regs(fe);
 185
 186         if ((((regs[R_TM] & 0x0f) == 0x00) && ((regs[R_TM] & 0x20) == 0x20)) ||
 187             (((regs[R_TM] & 0x0f) == 0x08) && ((regs[R_TM] & 0x20) == 0x00))) {
 188
 189                 if ((regs[R_TM] & 0x20) == 0x20)
 190                         regs[R_TM] &= ~0x20;
 191                 else
 192                         regs[R_TM] |= 0x20;
 193
 194                 tda18271_write_regs(fe, R_TM, 1);
 195
 196                 msleep(10); /* temperature sensing */
 197
 198                 /* read thermometer info */
 199                 tda18271_read_regs(fe);
 200         }
 201
 202         tm = tda18271_lookup_thermometer(fe);
 203
 204         /* switch thermometer off */
 205         regs[R_TM]   &= ~0x10;
 206         tda18271_write_regs(fe, R_TM, 1);
 207
 208         /* set CAL mode to normal */
 209         regs[R_EP4]  &= ~0x03;
 210         tda18271_write_regs(fe, R_EP4, 1);
 211
 212         return tm;
 213 }
 214
 215 /* ------------------------------------------------------------------ */
 216
 217 static int tda18271c2_rf_tracking_filters_correction(struct dvb_frontend *fe,
 218                                                      u32 freq)
 219 {
 220         struct tda18271_priv *priv = fe->tuner_priv;
 221         struct tda18271_rf_tracking_filter_cal *map = priv->rf_cal_state;
 222         unsigned char *regs = priv->tda18271_regs;
 223         int tm_current, rfcal_comp, approx, i, ret;
 224         u8 dc_over_dt, rf_tab;
 225
 226         /* power up */
 227         ret = tda18271_set_standby_mode(fe, 0, 0, 0);
 228         if (tda_fail(ret))
 229                 goto fail;
 230
 231         /* read die current temperature */
 232         tm_current = tda18271_read_thermometer(fe);
 233
 234         /* frequency dependent parameters */
 235
 236         tda18271_calc_rf_cal(fe, &freq);
 237         rf_tab = regs[R_EB14];
 238
 239         i = tda18271_lookup_rf_band(fe, &freq, NULL);
 240         if (tda_fail(i))
 241                 return i;
 242
 243         if ((0 == map[i].rf3) || (freq / 1000 < map[i].rf2)) {
 244                 approx = map[i].rf_a1 *
 245                         (freq / 1000 - map[i].rf1) + map[i].rf_b1 + rf_tab;
 246         } else {
 247                 approx = map[i].rf_a2 *
 248                         (freq / 1000 - map[i].rf2) + map[i].rf_b2 + rf_tab;
 249         }
 250
 251         if (approx < 0)
 252                 approx = 0;
 253         if (approx > 255)
 254                 approx = 255;
 255
 256         tda18271_lookup_map(fe, RF_CAL_DC_OVER_DT, &freq, &dc_over_dt);
 257
 258         /* calculate temperature compensation */
 259         rfcal_comp = dc_over_dt * (tm_current - priv->tm_rfcal);
 260
 261         regs[R_EB14] = approx + rfcal_comp;
 262         ret = tda18271_write_regs(fe, R_EB14, 1);
 263 fail:
 264         return ret;
 265 }
 266
 267 static int tda18271_por(struct dvb_frontend *fe)
 268 {
 269         struct tda18271_priv *priv = fe->tuner_priv;
 270         unsigned char *regs = priv->tda18271_regs;
 271         int ret;
 272
 273         /* power up detector 1 */
 274         regs[R_EB12] &= ~0x20;
 275         ret = tda18271_write_regs(fe, R_EB12, 1);
 276         if (tda_fail(ret))
 277                 goto fail;
 278
 279         regs[R_EB18] &= ~0x80; /* turn agc1 loop on */
 280         regs[R_EB18] &= ~0x03; /* set agc1_gain to  6 dB */
 281         ret = tda18271_write_regs(fe, R_EB18, 1);
 282         if (tda_fail(ret))
 283                 goto fail;
 284
 285         regs[R_EB21] |= 0x03; /* set agc2_gain to -6 dB */
 286
 287         /* POR mode */
 288         ret = tda18271_set_standby_mode(fe, 1, 0, 0);
 289         if (tda_fail(ret))
 290                 goto fail;
 291
 292         /* disable 1.5 MHz low pass filter */
 293         regs[R_EB23] &= ~0x04; /* forcelp_fc2_en = 0 */
 294         regs[R_EB23] &= ~0x02; /* XXX: lp_fc[2] = 0 */
 295         ret = tda18271_write_regs(fe, R_EB21, 3);
 296 fail:
 297         return ret;
 298 }
 299
 300 static int tda18271_calibrate_rf(struct dvb_frontend *fe, u32 freq)
 301 {
 302         struct tda18271_priv *priv = fe->tuner_priv;
 303         unsigned char *regs = priv->tda18271_regs;
 304         u32 N;
 305
 306         /* set CAL mode to normal */
 307         regs[R_EP4]  &= ~0x03;
 308         tda18271_write_regs(fe, R_EP4, 1);
 309
 310         /* switch off agc1 */
 311         regs[R_EP3]  |= 0x40; /* sm_lt = 1 */
 312
 313         regs[R_EB18] |= 0x03; /* set agc1_gain to 15 dB */
 314         tda18271_write_regs(fe, R_EB18, 1);
 315
 316         /* frequency dependent parameters */
 317
 318         tda18271_calc_bp_filter(fe, &freq);
 319         tda18271_calc_gain_taper(fe, &freq);
 320         tda18271_calc_rf_band(fe, &freq);
 321         tda18271_calc_km(fe, &freq);
 322
 323         tda18271_write_regs(fe, R_EP1, 3);
 324         tda18271_write_regs(fe, R_EB13, 1);
 325
 326         /* main pll charge pump source */
 327         tda18271_charge_pump_source(fe, TDA18271_MAIN_PLL, 1);
 328
 329         /* cal pll charge pump source */
 330         tda18271_charge_pump_source(fe, TDA18271_CAL_PLL, 1);
 331
 332         /* force dcdc converter to 0 V */
 333         regs[R_EB14] = 0x00;
 334         tda18271_write_regs(fe, R_EB14, 1);
 335
 336         /* disable plls lock */
 337         regs[R_EB20] &= ~0x20;
 338         tda18271_write_regs(fe, R_EB20, 1);
 339
 340         /* set CAL mode to RF tracking filter calibration */
 341         regs[R_EP4]  |= 0x03;
 342         tda18271_write_regs(fe, R_EP4, 2);
 343
 344         /* --------------------------------------------------------------- */
 345
 346         /* set the internal calibration signal */
 347         N = freq;
 348
 349         tda18271_calc_cal_pll(fe, N);
 350         tda18271_write_regs(fe, R_CPD, 4);
 351
 352         /* downconvert internal calibration */
 353         N += 1000000;
 354
 355         tda18271_calc_main_pll(fe, N);
 356         tda18271_write_regs(fe, R_MPD, 4);
 357
 358         msleep(5);
 359
 360         tda18271_write_regs(fe, R_EP2, 1);
 361         tda18271_write_regs(fe, R_EP1, 1);
 362         tda18271_write_regs(fe, R_EP2, 1);
 363         tda18271_write_regs(fe, R_EP1, 1);
 364
 365         /* --------------------------------------------------------------- */
 366
 367         /* normal operation for the main pll */
 368         tda18271_charge_pump_source(fe, TDA18271_MAIN_PLL, 0);
 369
 370         /* normal operation for the cal pll  */
 371         tda18271_charge_pump_source(fe, TDA18271_CAL_PLL, 0);
 372
 373         msleep(10); /* plls locking */
 374
 375         /* launch the rf tracking filters calibration */
 376         regs[R_EB20]  |= 0x20;
 377         tda18271_write_regs(fe, R_EB20, 1);
 378
 379         msleep(60); /* calibration */
 380
 381         /* --------------------------------------------------------------- */
 382
 383         /* set CAL mode to normal */
 384         regs[R_EP4]  &= ~0x03;
 385
 386         /* switch on agc1 */
 387         regs[R_EP3]  &= ~0x40; /* sm_lt = 0 */
 388
 389         regs[R_EB18] &= ~0x03; /* set agc1_gain to  6 dB */
 390         tda18271_write_regs(fe, R_EB18, 1);
 391
 392         tda18271_write_regs(fe, R_EP3, 2);
 393
 394         /* synchronization */
 395         tda18271_write_regs(fe, R_EP1, 1);
 396
 397         /* get calibration result */
 398         tda18271_read_extended(fe);
 399
 400         return regs[R_EB14];
 401 }
 402
 403 static int tda18271_powerscan(struct dvb_frontend *fe,
 404                               u32 *freq_in, u32 *freq_out)
 405 {
 406         struct tda18271_priv *priv = fe->tuner_priv;
 407         unsigned char *regs = priv->tda18271_regs;
 408         int sgn, bcal, count, wait, ret;
 409         u8 cid_target;
 410         u16 count_limit;
 411         u32 freq;
 412
 413         freq = *freq_in;
 414
 415         tda18271_calc_rf_band(fe, &freq);
 416         tda18271_calc_rf_cal(fe, &freq);
 417         tda18271_calc_gain_taper(fe, &freq);
 418         tda18271_lookup_cid_target(fe, &freq, &cid_target, &count_limit);
 419
 420         tda18271_write_regs(fe, R_EP2, 1);
 421         tda18271_write_regs(fe, R_EB14, 1);
 422
 423         /* downconvert frequency */
 424         freq += 1000000;
 425
 426         tda18271_calc_main_pll(fe, freq);
 427         tda18271_write_regs(fe, R_MPD, 4);
 428
 429         msleep(5); /* pll locking */
 430
 431         /* detection mode */
 432         regs[R_EP4]  &= ~0x03;
 433         regs[R_EP4]  |= 0x01;
 434         tda18271_write_regs(fe, R_EP4, 1);
 435
 436         /* launch power detection measurement */
 437         tda18271_write_regs(fe, R_EP2, 1);
 438
 439         /* read power detection info, stored in EB10 */
 440         ret = tda18271_read_extended(fe);
 441         if (tda_fail(ret))
 442                 return ret;
 443
 444         /* algorithm initialization */
 445         sgn = 1;
 446         *freq_out = *freq_in;
 447         bcal = 0;
 448         count = 0;
 449         wait = false;
 450
 451         while ((regs[R_EB10] & 0x3f) < cid_target) {
 452                 /* downconvert updated freq to 1 MHz */
 453                 freq = *freq_in + (sgn * count) + 1000000;
 454
 455                 tda18271_calc_main_pll(fe, freq);
 456                 tda18271_write_regs(fe, R_MPD, 4);
 457
 458                 if (wait) {
 459                         msleep(5); /* pll locking */
 460                         wait = false;
 461                 } else
 462                         udelay(100); /* pll locking */
 463
 464                 /* launch power detection measurement */
 465                 tda18271_write_regs(fe, R_EP2, 1);
 466
 467                 /* read power detection info, stored in EB10 */
 468                 ret = tda18271_read_extended(fe);
 469                 if (tda_fail(ret))
 470                         return ret;
 471
 472                 count += 200;
 473
 474                 if (count <= count_limit)
 475                         continue;
 476
 477                 if (sgn <= 0)
 478                         break;
 479
 480                 sgn = -1 * sgn;
 481                 count = 200;
 482                 wait = true;
 483         }
 484
 485         if ((regs[R_EB10] & 0x3f) >= cid_target) {
 486                 bcal = 1;
 487                 *freq_out = freq - 1000000;
 488         } else
 489                 bcal = 0;
 490
 491         tda_cal("bcal = %d, freq_in = %d, freq_out = %d (freq = %d)\n",
 492                 bcal, *freq_in, *freq_out, freq);
 493
 494         return bcal;
 495 }
 496
 497 static int tda18271_powerscan_init(struct dvb_frontend *fe)
 498 {
 499         struct tda18271_priv *priv = fe->tuner_priv;
 500         unsigned char *regs = priv->tda18271_regs;
 501         int ret;
 502
 503         /* set standard to digital */
 504         regs[R_EP3]  &= ~0x1f; /* clear std bits */
 505         regs[R_EP3]  |= 0x12;
 506
 507         /* set cal mode to normal */
 508         regs[R_EP4]  &= ~0x03;
 509
 510         /* update IF output level & IF notch frequency */
 511         regs[R_EP4]  &= ~0x1c; /* clear if level bits */
 512
 513         ret = tda18271_write_regs(fe, R_EP3, 2);
 514         if (tda_fail(ret))
 515                 goto fail;
 516
 517         regs[R_EB18] &= ~0x03; /* set agc1_gain to   6 dB */
 518         ret = tda18271_write_regs(fe, R_EB18, 1);
 519         if (tda_fail(ret))
 520                 goto fail;
 521
 522         regs[R_EB21] &= ~0x03; /* set agc2_gain to -15 dB */
 523
 524         /* 1.5 MHz low pass filter */
 525         regs[R_EB23] |= 0x04; /* forcelp_fc2_en = 1 */
 526         regs[R_EB23] |= 0x02; /* lp_fc[2] = 1 */
 527
 528         ret = tda18271_write_regs(fe, R_EB21, 3);
 529 fail:
 530         return ret;
 531 }
 532
 533 static int tda18271_rf_tracking_filters_init(struct dvb_frontend *fe, u32 freq)
 534 {
 535         struct tda18271_priv *priv = fe->tuner_priv;
 536         struct tda18271_rf_tracking_filter_cal *map = priv->rf_cal_state;
 537         unsigned char *regs = priv->tda18271_regs;
 538         int bcal, rf, i;
 539 #define RF1 0
 540 #define RF2 1
 541 #define RF3 2
 542         u32 rf_default[3];
 543         u32 rf_freq[3];
 544         u8 prog_cal[3];
 545         u8 prog_tab[3];
 546
 547         i = tda18271_lookup_rf_band(fe, &freq, NULL);
 548
 549         if (tda_fail(i))
 550                 return i;
 551
 552         rf_default[RF1] = 1000 * map[i].rf1_def;
 553         rf_default[RF2] = 1000 * map[i].rf2_def;
 554         rf_default[RF3] = 1000 * map[i].rf3_def;
 555
 556         for (rf = RF1; rf <= RF3; rf++) {
 557                 if (0 == rf_default[rf])
 558                         return 0;
 559                 tda_cal("freq = %d, rf = %d\n", freq, rf);
 560
 561                 /* look for optimized calibration frequency */
 562                 bcal = tda18271_powerscan(fe, &rf_default[rf], &rf_freq[rf]);
 563                 if (tda_fail(bcal))
 564                         return bcal;
 565
 566                 tda18271_calc_rf_cal(fe, &rf_freq[rf]);
 567                 prog_tab[rf] = regs[R_EB14];
 568
 569                 if (1 == bcal)
 570                         prog_cal[rf] = tda18271_calibrate_rf(fe, rf_freq[rf]);
 571                 else
 572                         prog_cal[rf] = prog_tab[rf];
 573
 574                 switch (rf) {
 575                 case RF1:
 576                         map[i].rf_a1 = 0;
 577                         map[i].rf_b1 = prog_cal[RF1] - prog_tab[RF1];
 578                         map[i].rf1   = rf_freq[RF1] / 1000;
 579                         break;
 580                 case RF2:
 581                         map[i].rf_a1 = (prog_cal[RF2] - prog_tab[RF2] -
 582                                         prog_cal[RF1] + prog_tab[RF1]) /
 583                                 ((rf_freq[RF2] - rf_freq[RF1]) / 1000);
 584                         map[i].rf2   = rf_freq[RF2] / 1000;
 585                         break;
 586                 case RF3:
 587                         map[i].rf_a2 = (prog_cal[RF3] - prog_tab[RF3] -
 588                                         prog_cal[RF2] + prog_tab[RF2]) /
 589                                 ((rf_freq[RF3] - rf_freq[RF2]) / 1000);
 590                         map[i].rf_b2 = prog_cal[RF2] - prog_tab[RF2];
 591                         map[i].rf3   = rf_freq[RF3] / 1000;
 592                         break;
 593                 default:
 594                         BUG();
 595                 }
 596         }
 597
 598         return 0;
 599 }
 600
 601 static int tda18271_calc_rf_filter_curve(struct dvb_frontend *fe)
 602 {
 603         struct tda18271_priv *priv = fe->tuner_priv;
 604         unsigned int i;
 605         int ret;
 606
 607         tda_info("tda18271: performing RF tracking filter calibration\n");
 608
 609         /* wait for die temperature stabilization */
 610         msleep(200);
 611
 612         ret = tda18271_powerscan_init(fe);
 613         if (tda_fail(ret))
 614                 goto fail;
 615
 616         /* rf band calibration */
 617         for (i = 0; priv->rf_cal_state[i].rfmax != 0; i++) {
 618                 ret =
 619                 tda18271_rf_tracking_filters_init(fe, 1000 *
 620                                                   priv->rf_cal_state[i].rfmax);
 621                 if (tda_fail(ret))
 622                         goto fail;
 623         }
 624
 625         priv->tm_rfcal = tda18271_read_thermometer(fe);
 626 fail:
 627         return ret;
 628 }
 629
 630 /* ------------------------------------------------------------------ */
 631
 632 static int tda18271c2_rf_cal_init(struct dvb_frontend *fe)
 633 {
 634         struct tda18271_priv *priv = fe->tuner_priv;
 635         unsigned char *regs = priv->tda18271_regs;
 636         int ret;
 637
 638         /* test RF_CAL_OK to see if we need init */
 639         if ((regs[R_EP1] & 0x10) == 0)
 640                 priv->cal_initialized = false;
 641
 642         if (priv->cal_initialized)
 643                 return 0;
 644
 645         ret = tda18271_calc_rf_filter_curve(fe);
 646         if (tda_fail(ret))
 647                 goto fail;
 648
 649         ret = tda18271_por(fe);
 650         if (tda_fail(ret))
 651                 goto fail;
 652
 653         tda_info("tda18271: RF tracking filter calibration complete\n");
 654
 655         priv->cal_initialized = true;
 656         goto end;
 657 fail:
 658         tda_info("tda18271: RF tracking filter calibration failed!\n");
 659 end:
 660         return ret;
 661 }
 662
 663 static int tda18271c1_rf_tracking_filter_calibration(struct dvb_frontend *fe,
 664                                                      u32 freq, u32 bw)
 665 {
 666         struct tda18271_priv *priv = fe->tuner_priv;
 667         unsigned char *regs = priv->tda18271_regs;
 668         int ret;
 669         u32 N = 0;
 670
 671         /* calculate bp filter */
 672         tda18271_calc_bp_filter(fe, &freq);
 673         tda18271_write_regs(fe, R_EP1, 1);
 674
 675         regs[R_EB4]  &= 0x07;
 676         regs[R_EB4]  |= 0x60;
 677         tda18271_write_regs(fe, R_EB4, 1);
 678
 679         regs[R_EB7]   = 0x60;
 680         tda18271_write_regs(fe, R_EB7, 1);
 681
 682         regs[R_EB14]  = 0x00;
 683         tda18271_write_regs(fe, R_EB14, 1);
 684
 685         regs[R_EB20]  = 0xcc;
 686         tda18271_write_regs(fe, R_EB20, 1);
 687
 688         /* set cal mode to RF tracking filter calibration */
 689         regs[R_EP4]  |= 0x03;
 690
 691         /* calculate cal pll */
 692
 693         switch (priv->mode) {
 694         case TDA18271_ANALOG:
 695                 N = freq - 1250000;
 696                 break;
 697         case TDA18271_DIGITAL:
 698                 N = freq + bw / 2;
 699                 break;
 700         }
 701
 702         tda18271_calc_cal_pll(fe, N);
 703
 704         /* calculate main pll */
 705
 706         switch (priv->mode) {
 707         case TDA18271_ANALOG:
 708                 N = freq - 250000;
 709                 break;
 710         case TDA18271_DIGITAL:
 711                 N = freq + bw / 2 + 1000000;
 712                 break;
 713         }
 714
 715         tda18271_calc_main_pll(fe, N);
 716
 717         ret = tda18271_write_regs(fe, R_EP3, 11);
 718         if (tda_fail(ret))
 719                 return ret;
 720
 721         msleep(5); /* RF tracking filter calibration initialization */
 722
 723         /* search for K,M,CO for RF calibration */
 724         tda18271_calc_km(fe, &freq);
 725         tda18271_write_regs(fe, R_EB13, 1);
 726
 727         /* search for rf band */
 728         tda18271_calc_rf_band(fe, &freq);
 729
 730         /* search for gain taper */
 731         tda18271_calc_gain_taper(fe, &freq);
 732
 733         tda18271_write_regs(fe, R_EP2, 1);
 734         tda18271_write_regs(fe, R_EP1, 1);
 735         tda18271_write_regs(fe, R_EP2, 1);
 736         tda18271_write_regs(fe, R_EP1, 1);
 737
 738         regs[R_EB4]  &= 0x07;
 739         regs[R_EB4]  |= 0x40;
 740         tda18271_write_regs(fe, R_EB4, 1);
 741
 742         regs[R_EB7]   = 0x40;
 743         tda18271_write_regs(fe, R_EB7, 1);
 744         msleep(10); /* pll locking */
 745
 746         regs[R_EB20]  = 0xec;
 747         tda18271_write_regs(fe, R_EB20, 1);
 748         msleep(60); /* RF tracking filter calibration completion */
 749
 750         regs[R_EP4]  &= ~0x03; /* set cal mode to normal */
 751         tda18271_write_regs(fe, R_EP4, 1);
 752
 753         tda18271_write_regs(fe, R_EP1, 1);
 754
 755         /* RF tracking filter correction for VHF_Low band */
 756         if (0 == tda18271_calc_rf_cal(fe, &freq))
 757                 tda18271_write_regs(fe, R_EB14, 1);
 758
 759         return 0;
 760 }
 761
 762 /* ------------------------------------------------------------------ */
 763
 764 static int tda18271_ir_cal_init(struct dvb_frontend *fe)
 765 {
 766         struct tda18271_priv *priv = fe->tuner_priv;
 767         unsigned char *regs = priv->tda18271_regs;
 768         int ret;
 769
 770         ret = tda18271_read_regs(fe);
 771         if (tda_fail(ret))
 772                 goto fail;
 773
 774         /* test IR_CAL_OK to see if we need init */
 775         if ((regs[R_EP1] & 0x08) == 0)
 776                 ret = tda18271_init_regs(fe);
 777 fail:
 778         return ret;
 779 }
 780
 781 static int tda18271_init(struct dvb_frontend *fe)
 782 {
 783         struct tda18271_priv *priv = fe->tuner_priv;
 784         int ret;
 785
 786         mutex_lock(&priv->lock);
 787
 788         /* power up */
 789         ret = tda18271_set_standby_mode(fe, 0, 0, 0);
 790         if (tda_fail(ret))
 791                 goto fail;
 792
 793         /* initialization */
 794         ret = tda18271_ir_cal_init(fe);
 795         if (tda_fail(ret))
 796                 goto fail;
 797
 798         if (priv->id == TDA18271HDC2)
 799                 tda18271c2_rf_cal_init(fe);
 800 fail:
 801         mutex_unlock(&priv->lock);
 802
 803         return ret;
 804 }
 805
 806 static int tda18271_tune(struct dvb_frontend *fe,
 807                          struct tda18271_std_map_item *map, u32 freq, u32 bw)
 808 {
 809         struct tda18271_priv *priv = fe->tuner_priv;
 810         int ret;
 811
 812         tda_dbg("freq = %d, ifc = %d, bw = %d, agc_mode = %d, std = %d\n",
 813                 freq, map->if_freq, bw, map->agc_mode, map->std);
 814
 815         ret = tda18271_init(fe);
 816         if (tda_fail(ret))
 817                 goto fail;
 818
 819         mutex_lock(&priv->lock);
 820
 821         switch (priv->id) {
 822         case TDA18271HDC1:
 823                 tda18271c1_rf_tracking_filter_calibration(fe, freq, bw);
 824                 break;
 825         case TDA18271HDC2:
 826                 tda18271c2_rf_tracking_filters_correction(fe, freq);
 827                 break;
 828         }
 829         ret = tda18271_channel_configuration(fe, map, freq, bw);
 830
 831         mutex_unlock(&priv->lock);
 832 fail:
 833         return ret;
 834 }
 835
 836 /* ------------------------------------------------------------------ */
 837
 838 static int tda18271_set_params(struct dvb_frontend *fe,
 839                                struct dvb_frontend_parameters *params)
 840 {
 841         struct tda18271_priv *priv = fe->tuner_priv;
 842         struct tda18271_std_map *std_map = &priv->std;
 843         struct tda18271_std_map_item *map;
 844         int ret;
 845         u32 bw, freq = params->frequency;
 846
 847         priv->mode = TDA18271_DIGITAL;
 848
 849         if (fe->ops.info.type == FE_ATSC) {
 850                 switch (params->u.vsb.modulation) {
 851                 case VSB_8:
 852                 case VSB_16:
 853                         map = &std_map->atsc_6;
 854                         break;
 855                 case QAM_64:
 856                 case QAM_256:
 857                         map = &std_map->qam_6;
 858                         break;
 859                 default:
 860                         tda_warn("modulation not set!\n");
 861                         return -EINVAL;
 862                 }
 863 #if 0
 864                 /* userspace request is already center adjusted */
 865                 freq += 1750000; /* Adjust to center (+1.75MHZ) */
 866 #endif
 867                 bw = 6000000;
 868         } else if (fe->ops.info.type == FE_OFDM) {
 869                 switch (params->u.ofdm.bandwidth) {
 870                 case BANDWIDTH_6_MHZ:
 871                         bw = 6000000;
 872                         map = &std_map->dvbt_6;
 873                         break;
 874                 case BANDWIDTH_7_MHZ:
 875                         bw = 7000000;
 876                         map = &std_map->dvbt_7;
 877                         break;
 878                 case BANDWIDTH_8_MHZ:
 879                         bw = 8000000;
 880                         map = &std_map->dvbt_8;
 881                         break;
 882                 default:
 883                         tda_warn("bandwidth not set!\n");
 884                         return -EINVAL;
 885                 }
 886         } else {
 887                 tda_warn("modulation type not supported!\n");
 888                 return -EINVAL;
 889         }
 890
 891         /* When tuning digital, the analog demod must be tri-stated */
 892         if (fe->ops.analog_ops.standby)
 893                 fe->ops.analog_ops.standby(fe);
 894
 895         ret = tda18271_tune(fe, map, freq, bw);
 896
 897         if (tda_fail(ret))
 898                 goto fail;
 899
 900         priv->frequency = freq;
 901         priv->bandwidth = (fe->ops.info.type == FE_OFDM) ?
 902                 params->u.ofdm.bandwidth : 0;
 903 fail:
 904         return ret;
 905 }
 906
 907 static int tda18271_set_analog_params(struct dvb_frontend *fe,
 908                                       struct analog_parameters *params)
 909 {
 910         struct tda18271_priv *priv = fe->tuner_priv;
 911         struct tda18271_std_map *std_map = &priv->std;
 912         struct tda18271_std_map_item *map;
 913         char *mode;
 914         int ret;
 915         u32 freq = params->frequency * 62500;
 916
 917         priv->mode = TDA18271_ANALOG;
 918
 919         if (params->mode == V4L2_TUNER_RADIO) {
 920                 freq = freq / 1000;
 921                 map = &std_map->fm_radio;
 922                 mode = "fm";
 923         } else if (params->std & V4L2_STD_MN) {
 924                 map = &std_map->atv_mn;
 925                 mode = "MN";
 926         } else if (params->std & V4L2_STD_B) {
 927                 map = &std_map->atv_b;
 928                 mode = "B";
 929         } else if (params->std & V4L2_STD_GH) {
 930                 map = &std_map->atv_gh;
 931                 mode = "GH";
 932         } else if (params->std & V4L2_STD_PAL_I) {
 933                 map = &std_map->atv_i;
 934                 mode = "I";
 935         } else if (params->std & V4L2_STD_DK) {
 936                 map = &std_map->atv_dk;
 937                 mode = "DK";
 938         } else if (params->std & V4L2_STD_SECAM_L) {
 939                 map = &std_map->atv_l;
 940                 mode = "L";
 941         } else if (params->std & V4L2_STD_SECAM_LC) {
 942                 map = &std_map->atv_lc;
 943                 mode = "L'";
 944         } else {
 945                 map = &std_map->atv_i;
 946                 mode = "xx";
 947         }
 948
 949         tda_dbg("setting tda18271 to system %s\n", mode);
 950
 951         ret = tda18271_tune(fe, map, freq, 0);
 952
 953         if (tda_fail(ret))
 954                 goto fail;
 955
 956         priv->frequency = freq;
 957         priv->bandwidth = 0;
 958 fail:
 959         return ret;
 960 }
 961
 962 static int tda18271_sleep(struct dvb_frontend *fe)
 963 {
 964         struct tda18271_priv *priv = fe->tuner_priv;
 965         int ret;
 966
 967         mutex_lock(&priv->lock);
 968
 969         /* standby mode w/ slave tuner output
 970          * & loop thru & xtal oscillator on */
 971         ret = tda18271_set_standby_mode(fe, 1, 0, 0);
 972
 973         mutex_unlock(&priv->lock);
 974
 975         return ret;
 976 }
 977
 978 static int tda18271_release(struct dvb_frontend *fe)
 979 {
 980         struct tda18271_priv *priv = fe->tuner_priv;
 981
 982         mutex_lock(&tda18271_list_mutex);
 983
 984         if (priv)
 985                 hybrid_tuner_release_state(priv);
 986
 987         mutex_unlock(&tda18271_list_mutex);
 988
 989         fe->tuner_priv = NULL;
 990
 991         return 0;
 992 }
 993
 994 static int tda18271_get_frequency(struct dvb_frontend *fe, u32 *frequency)
 995 {
 996         struct tda18271_priv *priv = fe->tuner_priv;
 997         *frequency = priv->frequency;
 998         return 0;
 999 }
1000
1001 static int tda18271_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
1002 {
1003         struct tda18271_priv *priv = fe->tuner_priv;
1004         *bandwidth = priv->bandwidth;
1005         return 0;
1006 }
1007
1008 /* ------------------------------------------------------------------ */
1009
1010 #define tda18271_update_std(std_cfg, name) do {                         \
1011         if (map->std_cfg.if_freq +                                      \
1012                 map->std_cfg.agc_mode + map->std_cfg.std +              \
1013                 map->std_cfg.if_lvl + map->std_cfg.rfagc_top > 0) {     \
1014                 tda_dbg("Using custom std config for %s\n", name);      \
1015                 memcpy(&std->std_cfg, &map->std_cfg,                    \
1016                         sizeof(struct tda18271_std_map_item));          \
1017         } } while (0)
1018
1019 #define tda18271_dump_std_item(std_cfg, name) do {                      \
1020         tda_dbg("(%s) if_freq = %d, agc_mode = %d, std = %d, "          \
1021                 "if_lvl = %d, rfagc_top = 0x%02x\n",                    \
1022                 name, std->std_cfg.if_freq,                             \
1023                 std->std_cfg.agc_mode, std->std_cfg.std,                \
1024                 std->std_cfg.if_lvl, std->std_cfg.rfagc_top);           \
1025         } while (0)
1026
1027 static int tda18271_dump_std_map(struct dvb_frontend *fe)
1028 {
1029         struct tda18271_priv *priv = fe->tuner_priv;
1030         struct tda18271_std_map *std = &priv->std;
1031
1032         tda_dbg("========== STANDARD MAP SETTINGS ==========\n");
1033         tda18271_dump_std_item(fm_radio, "  fm  ");
1034         tda18271_dump_std_item(atv_b,  "atv b ");
1035         tda18271_dump_std_item(atv_dk, "atv dk");
1036         tda18271_dump_std_item(atv_gh, "atv gh");
1037         tda18271_dump_std_item(atv_i,  "atv i ");
1038         tda18271_dump_std_item(atv_l,  "atv l ");
1039         tda18271_dump_std_item(atv_lc, "atv l'");
1040         tda18271_dump_std_item(atv_mn, "atv mn");
1041         tda18271_dump_std_item(atsc_6, "atsc 6");
1042         tda18271_dump_std_item(dvbt_6, "dvbt 6");
1043         tda18271_dump_std_item(dvbt_7, "dvbt 7");
1044         tda18271_dump_std_item(dvbt_8, "dvbt 8");
1045         tda18271_dump_std_item(qam_6,  "qam 6 ");
1046         tda18271_dump_std_item(qam_8,  "qam 8 ");
1047
1048         return 0;
1049 }
1050
1051 static int tda18271_update_std_map(struct dvb_frontend *fe,
1052                                    struct tda18271_std_map *map)
1053 {
1054         struct tda18271_priv *priv = fe->tuner_priv;
1055         struct tda18271_std_map *std = &priv->std;
1056
1057         if (!map)
1058                 return -EINVAL;
1059
1060         tda18271_update_std(fm_radio, "fm");
1061         tda18271_update_std(atv_b,  "atv b");
1062         tda18271_update_std(atv_dk, "atv dk");
1063         tda18271_update_std(atv_gh, "atv gh");
1064         tda18271_update_std(atv_i,  "atv i");
1065         tda18271_update_std(atv_l,  "atv l");
1066         tda18271_update_std(atv_lc, "atv l'");
1067         tda18271_update_std(atv_mn, "atv mn");
1068         tda18271_update_std(atsc_6, "atsc 6");
1069         tda18271_update_std(dvbt_6, "dvbt 6");
1070         tda18271_update_std(dvbt_7, "dvbt 7");
1071         tda18271_update_std(dvbt_8, "dvbt 8");
1072         tda18271_update_std(qam_6,  "qam 6");
1073         tda18271_update_std(qam_8,  "qam 8");
1074
1075         return 0;
1076 }
1077
1078 static int tda18271_get_id(struct dvb_frontend *fe)
1079 {
1080         struct tda18271_priv *priv = fe->tuner_priv;
1081         unsigned char *regs = priv->tda18271_regs;
1082         char *name;
1083         int ret = 0;
1084
1085         mutex_lock(&priv->lock);
1086         tda18271_read_regs(fe);
1087         mutex_unlock(&priv->lock);
1088
1089         switch (regs[R_ID] & 0x7f) {
1090         case 3:
1091                 name = "TDA18271HD/C1";
1092                 priv->id = TDA18271HDC1;
1093                 break;
1094         case 4:
1095                 name = "TDA18271HD/C2";
1096                 priv->id = TDA18271HDC2;
1097                 break;
1098         default:
1099                 name = "Unknown device";
1100                 ret = -EINVAL;
1101                 break;
1102         }
1103
1104         tda_info("%s detected @ %d-%04x%s\n", name,
1105                  i2c_adapter_id(priv->i2c_props.adap),
1106                  priv->i2c_props.addr,
1107                  (0 == ret) ? "" : ", device not supported.");
1108
1109         return ret;
1110 }
1111
1112 static struct dvb_tuner_ops tda18271_tuner_ops = {
1113         .info = {
1114                 .name = "NXP TDA18271HD",
1115                 .frequency_min  =  45000000,
1116                 .frequency_max  = 864000000,
1117                 .frequency_step =     62500
1118         },
1119         .init              = tda18271_init,
1120         .sleep             = tda18271_sleep,
1121         .set_params        = tda18271_set_params,
1122         .set_analog_params = tda18271_set_analog_params,
1123         .release           = tda18271_release,
1124         .get_frequency     = tda18271_get_frequency,
1125         .get_bandwidth     = tda18271_get_bandwidth,
1126 };
1127
1128 struct dvb_frontend *tda18271_attach(struct dvb_frontend *fe, u8 addr,
1129                                      struct i2c_adapter *i2c,
1130                                      struct tda18271_config *cfg)
1131 {
1132         struct tda18271_priv *priv = NULL;
1133         int instance;
1134
1135         mutex_lock(&tda18271_list_mutex);
1136
1137         instance = hybrid_tuner_request_state(struct tda18271_priv, priv,
1138                                               hybrid_tuner_instance_list,
1139                                               i2c, addr, "tda18271");
1140         switch (instance) {
1141         case 0:
1142                 goto fail;
1143                 break;
1144         case 1:
1145                 /* new tuner instance */
1146                 priv->gate = (cfg) ? cfg->gate : TDA18271_GATE_AUTO;
1147                 priv->role = (cfg) ? cfg->role : TDA18271_MASTER;
1148                 priv->cal_initialized = false;
1149                 mutex_init(&priv->lock);
1150
1151                 fe->tuner_priv = priv;
1152
1153                 if (cfg)
1154                         priv->small_i2c = cfg->small_i2c;
1155
1156                 if (tda_fail(tda18271_get_id(fe)))
1157                         goto fail;
1158
1159                 if (tda_fail(tda18271_assign_map_layout(fe)))
1160                         goto fail;
1161
1162                 mutex_lock(&priv->lock);
1163                 tda18271_init_regs(fe);
1164
1165                 if ((tda18271_cal_on_startup) && (priv->id == TDA18271HDC2))
1166                         tda18271c2_rf_cal_init(fe);
1167
1168                 mutex_unlock(&priv->lock);
1169                 break;
1170         default:
1171                 /* existing tuner instance */
1172                 fe->tuner_priv = priv;
1173
1174                 /* allow dvb driver to override i2c gate setting */
1175                 if ((cfg) && (cfg->gate != TDA18271_GATE_ANALOG))
1176                         priv->gate = cfg->gate;
1177                 break;
1178         }
1179
1180         /* override default std map with values in config struct */
1181         if ((cfg) && (cfg->std_map))
1182                 tda18271_update_std_map(fe, cfg->std_map);
1183
1184         mutex_unlock(&tda18271_list_mutex);
1185
1186         memcpy(&fe->ops.tuner_ops, &tda18271_tuner_ops,
1187                sizeof(struct dvb_tuner_ops));
1188
1189         if (tda18271_debug & (DBG_MAP | DBG_ADV))
1190                 tda18271_dump_std_map(fe);
1191
1192         return fe;
1193 fail:
1194         mutex_unlock(&tda18271_list_mutex);
1195
1196         tda18271_release(fe);
1197         return NULL;
1198 }
1199 EXPORT_SYMBOL_GPL(tda18271_attach);
1200 MODULE_DESCRIPTION("NXP TDA18271HD analog / digital tuner driver");
1201 MODULE_AUTHOR("Michael Krufky <mkrufky@linuxtv.org>");
1202 MODULE_LICENSE("GPL");
1203 MODULE_VERSION("0.3");
1204
1205 /*
1206  * Overrides for Emacs so that we follow Linus's tabbing style.
1207  * ---------------------------------------------------------------------------
1208  * Local variables:
1209  * c-basic-offset: 8
1210  * End:
1211  */