drivers/media/common/tuners/tda18271-fe.c

   1 /*
   2     tda18271-fe.c - driver for the Philips / NXP TDA18271 silicon tuner
   3
   4     Copyright (C) 2007, 2008 Michael Krufky <mkrufky@linuxtv.org>
   5
   6     This program is free software; you can redistribute it and/or modify
   7     it under the terms of the GNU General Public License as published by
   8     the Free Software Foundation; either version 2 of the License, or
   9     (at your option) any later version.
  10
  11     This program is distributed in the hope that it will be useful,
  12     but WITHOUT ANY WARRANTY; without even the implied warranty of
  13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14     GNU General Public License for more details.
  15
  16     You should have received a copy of the GNU General Public License
  17     along with this program; if not, write to the Free Software
  18     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19 */
  20
  21 #include <linux/delay.h>
  22 #include <linux/videodev2.h>
  23 #include "tda18271-priv.h"
  24
  25 int tda18271_debug;
  26 module_param_named(debug, tda18271_debug, int, 0644);
  27 MODULE_PARM_DESC(debug, "set debug level "
  28                  "(info=1, map=2, reg=4, adv=8, cal=16 (or-able))");
  29
  30 static int tda18271_cal_on_startup;
  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 inline void tda18271_set_if_notch(struct dvb_frontend *fe)
  49 {
  50         struct tda18271_priv *priv = fe->tuner_priv;
  51         unsigned char *regs = priv->tda18271_regs;
  52
  53         switch (priv->mode) {
  54         case TDA18271_ANALOG:
  55                 regs[R_MPD]  &= ~0x80; /* IF notch = 0 */
  56                 break;
  57         case TDA18271_DIGITAL:
  58                 regs[R_MPD]  |= 0x80; /* IF notch = 1 */
  59                 break;
  60         }
  61 }
  62
  63 static int tda18271_channel_configuration(struct dvb_frontend *fe,
  64                                           struct tda18271_std_map_item *map,
  65                                           u32 freq, u32 bw)
  66 {
  67         struct tda18271_priv *priv = fe->tuner_priv;
  68         unsigned char *regs = priv->tda18271_regs;
  69         int ret;
  70         u32 N;
  71
  72         /* update TV broadcast parameters */
  73
  74         /* set standard */
  75         regs[R_EP3]  &= ~0x1f; /* clear std bits */
  76         regs[R_EP3]  |= (map->agc_mode << 3) | map->std;
  77
  78         /* set rfagc to high speed mode */
  79         regs[R_EP3] &= ~0x04;
  80
  81         /* set cal mode to normal */
  82         regs[R_EP4]  &= ~0x03;
  83
  84         /* update IF output level */
  85         regs[R_EP4]  &= ~0x1c; /* clear if level bits */
  86         regs[R_EP4]  |= (map->if_lvl << 2);
  87
  88         /* update FM_RFn */
  89         regs[R_EP4]  &= ~0x80;
  90         regs[R_EP4]  |= map->fm_rfn << 7;
  91
  92         /* update rf top / if top */
  93         regs[R_EB22]  = 0x00;
  94         regs[R_EB22] |= map->rfagc_top;
  95         ret = tda18271_write_regs(fe, R_EB22, 1);
  96         if (tda_fail(ret))
  97                 goto fail;
  98
  99         /* --------------------------------------------------------------- */
 100
 101         /* disable Power Level Indicator */
 102         regs[R_EP1]  |= 0x40;
 103
 104         /* frequency dependent parameters */
 105
 106         tda18271_calc_ir_measure(fe, &freq);
 107
 108         tda18271_calc_bp_filter(fe, &freq);
 109
 110         tda18271_calc_rf_band(fe, &freq);
 111
 112         tda18271_calc_gain_taper(fe, &freq);
 113
 114         /* --------------------------------------------------------------- */
 115
 116         /* dual tuner and agc1 extra configuration */
 117
 118         switch (priv->role) {
 119         case TDA18271_MASTER:
 120                 regs[R_EB1]  |= 0x04; /* main vco */
 121                 break;
 122         case TDA18271_SLAVE:
 123                 regs[R_EB1]  &= ~0x04; /* cal vco */
 124                 break;
 125         }
 126
 127         /* agc1 always active */
 128         regs[R_EB1]  &= ~0x02;
 129
 130         /* agc1 has priority on agc2 */
 131         regs[R_EB1]  &= ~0x01;
 132
 133         ret = tda18271_write_regs(fe, R_EB1, 1);
 134         if (tda_fail(ret))
 135                 goto fail;
 136
 137         /* --------------------------------------------------------------- */
 138
 139         N = map->if_freq * 1000 + freq;
 140
 141         switch (priv->role) {
 142         case TDA18271_MASTER:
 143                 tda18271_calc_main_pll(fe, N);
 144                 tda18271_set_if_notch(fe);
 145                 tda18271_write_regs(fe, R_MPD, 4);
 146                 break;
 147         case TDA18271_SLAVE:
 148                 tda18271_calc_cal_pll(fe, N);
 149                 tda18271_write_regs(fe, R_CPD, 4);
 150
 151                 regs[R_MPD] = regs[R_CPD] & 0x7f;
 152                 tda18271_set_if_notch(fe);
 153                 tda18271_write_regs(fe, R_MPD, 1);
 154                 break;
 155         }
 156
 157         ret = tda18271_write_regs(fe, R_TM, 7);
 158         if (tda_fail(ret))
 159                 goto fail;
 160
 161         /* force charge pump source */
 162         charge_pump_source(fe, 1);
 163
 164         msleep(1);
 165
 166         /* return pll to normal operation */
 167         charge_pump_source(fe, 0);
 168
 169         msleep(20);
 170
 171         /* set rfagc to normal speed mode */
 172         if (map->fm_rfn)
 173                 regs[R_EP3] &= ~0x04;
 174         else
 175                 regs[R_EP3] |= 0x04;
 176         ret = tda18271_write_regs(fe, R_EP3, 1);
 177 fail:
 178         return ret;
 179 }
 180
 181 static int tda18271_read_thermometer(struct dvb_frontend *fe)
 182 {
 183         struct tda18271_priv *priv = fe->tuner_priv;
 184         unsigned char *regs = priv->tda18271_regs;
 185         int tm;
 186
 187         /* switch thermometer on */
 188         regs[R_TM]   |= 0x10;
 189         tda18271_write_regs(fe, R_TM, 1);
 190
 191         /* read thermometer info */
 192         tda18271_read_regs(fe);
 193
 194         if ((((regs[R_TM] & 0x0f) == 0x00) && ((regs[R_TM] & 0x20) == 0x20)) ||
 195             (((regs[R_TM] & 0x0f) == 0x08) && ((regs[R_TM] & 0x20) == 0x00))) {
 196
 197                 if ((regs[R_TM] & 0x20) == 0x20)
 198                         regs[R_TM] &= ~0x20;
 199                 else
 200                         regs[R_TM] |= 0x20;
 201
 202                 tda18271_write_regs(fe, R_TM, 1);
 203
 204                 msleep(10); /* temperature sensing */
 205
 206                 /* read thermometer info */
 207                 tda18271_read_regs(fe);
 208         }
 209
 210         tm = tda18271_lookup_thermometer(fe);
 211
 212         /* switch thermometer off */
 213         regs[R_TM]   &= ~0x10;
 214         tda18271_write_regs(fe, R_TM, 1);
 215
 216         /* set CAL mode to normal */
 217         regs[R_EP4]  &= ~0x03;
 218         tda18271_write_regs(fe, R_EP4, 1);
 219
 220         return tm;
 221 }
 222
 223 /* ------------------------------------------------------------------ */
 224
 225 static int tda18271c2_rf_tracking_filters_correction(struct dvb_frontend *fe,
 226                                                      u32 freq)
 227 {
 228         struct tda18271_priv *priv = fe->tuner_priv;
 229         struct tda18271_rf_tracking_filter_cal *map = priv->rf_cal_state;
 230         unsigned char *regs = priv->tda18271_regs;
 231         int tm_current, rfcal_comp, approx, i, ret;
 232         u8 dc_over_dt, rf_tab;
 233
 234         /* power up */
 235         ret = tda18271_set_standby_mode(fe, 0, 0, 0);
 236         if (tda_fail(ret))
 237                 goto fail;
 238
 239         /* read die current temperature */
 240         tm_current = tda18271_read_thermometer(fe);
 241
 242         /* frequency dependent parameters */
 243
 244         tda18271_calc_rf_cal(fe, &freq);
 245         rf_tab = regs[R_EB14];
 246
 247         i = tda18271_lookup_rf_band(fe, &freq, NULL);
 248         if (tda_fail(i))
 249                 return i;
 250
 251         if ((0 == map[i].rf3) || (freq / 1000 < map[i].rf2)) {
 252                 approx = map[i].rf_a1 *
 253                         (freq / 1000 - map[i].rf1) + map[i].rf_b1 + rf_tab;
 254         } else {
 255                 approx = map[i].rf_a2 *
 256                         (freq / 1000 - map[i].rf2) + map[i].rf_b2 + rf_tab;
 257         }
 258
 259         if (approx < 0)
 260                 approx = 0;
 261         if (approx > 255)
 262                 approx = 255;
 263
 264         tda18271_lookup_map(fe, RF_CAL_DC_OVER_DT, &freq, &dc_over_dt);
 265
 266         /* calculate temperature compensation */
 267         rfcal_comp = dc_over_dt * (tm_current - priv->tm_rfcal);
 268
 269         regs[R_EB14] = approx + rfcal_comp;
 270         ret = tda18271_write_regs(fe, R_EB14, 1);
 271 fail:
 272         return ret;
 273 }
 274
 275 static int tda18271_por(struct dvb_frontend *fe)
 276 {
 277         struct tda18271_priv *priv = fe->tuner_priv;
 278         unsigned char *regs = priv->tda18271_regs;
 279         int ret;
 280
 281         /* power up detector 1 */
 282         regs[R_EB12] &= ~0x20;
 283         ret = tda18271_write_regs(fe, R_EB12, 1);
 284         if (tda_fail(ret))
 285                 goto fail;
 286
 287         regs[R_EB18] &= ~0x80; /* turn agc1 loop on */
 288         regs[R_EB18] &= ~0x03; /* set agc1_gain to  6 dB */
 289         ret = tda18271_write_regs(fe, R_EB18, 1);
 290         if (tda_fail(ret))
 291                 goto fail;
 292
 293         regs[R_EB21] |= 0x03; /* set agc2_gain to -6 dB */
 294
 295         /* POR mode */
 296         ret = tda18271_set_standby_mode(fe, 1, 0, 0);
 297         if (tda_fail(ret))
 298                 goto fail;
 299
 300         /* disable 1.5 MHz low pass filter */
 301         regs[R_EB23] &= ~0x04; /* forcelp_fc2_en = 0 */
 302         regs[R_EB23] &= ~0x02; /* XXX: lp_fc[2] = 0 */
 303         ret = tda18271_write_regs(fe, R_EB21, 3);
 304 fail:
 305         return ret;
 306 }
 307
 308 static int tda18271_calibrate_rf(struct dvb_frontend *fe, u32 freq)
 309 {
 310         struct tda18271_priv *priv = fe->tuner_priv;
 311         unsigned char *regs = priv->tda18271_regs;
 312         u32 N;
 313
 314         /* set CAL mode to normal */
 315         regs[R_EP4]  &= ~0x03;
 316         tda18271_write_regs(fe, R_EP4, 1);
 317
 318         /* switch off agc1 */
 319         regs[R_EP3]  |= 0x40; /* sm_lt = 1 */
 320
 321         regs[R_EB18] |= 0x03; /* set agc1_gain to 15 dB */
 322         tda18271_write_regs(fe, R_EB18, 1);
 323
 324         /* frequency dependent parameters */
 325
 326         tda18271_calc_bp_filter(fe, &freq);
 327         tda18271_calc_gain_taper(fe, &freq);
 328         tda18271_calc_rf_band(fe, &freq);
 329         tda18271_calc_km(fe, &freq);
 330
 331         tda18271_write_regs(fe, R_EP1, 3);
 332         tda18271_write_regs(fe, R_EB13, 1);
 333
 334         /* main pll charge pump source */
 335         tda18271_charge_pump_source(fe, TDA18271_MAIN_PLL, 1);
 336
 337         /* cal pll charge pump source */
 338         tda18271_charge_pump_source(fe, TDA18271_CAL_PLL, 1);
 339
 340         /* force dcdc converter to 0 V */
 341         regs[R_EB14] = 0x00;
 342         tda18271_write_regs(fe, R_EB14, 1);
 343
 344         /* disable plls lock */
 345         regs[R_EB20] &= ~0x20;
 346         tda18271_write_regs(fe, R_EB20, 1);
 347
 348         /* set CAL mode to RF tracking filter calibration */
 349         regs[R_EP4]  |= 0x03;
 350         tda18271_write_regs(fe, R_EP4, 2);
 351
 352         /* --------------------------------------------------------------- */
 353
 354         /* set the internal calibration signal */
 355         N = freq;
 356
 357         tda18271_calc_cal_pll(fe, N);
 358         tda18271_write_regs(fe, R_CPD, 4);
 359
 360         /* downconvert internal calibration */
 361         N += 1000000;
 362
 363         tda18271_calc_main_pll(fe, N);
 364         tda18271_write_regs(fe, R_MPD, 4);
 365
 366         msleep(5);
 367
 368         tda18271_write_regs(fe, R_EP2, 1);
 369         tda18271_write_regs(fe, R_EP1, 1);
 370         tda18271_write_regs(fe, R_EP2, 1);
 371         tda18271_write_regs(fe, R_EP1, 1);
 372
 373         /* --------------------------------------------------------------- */
 374
 375         /* normal operation for the main pll */
 376         tda18271_charge_pump_source(fe, TDA18271_MAIN_PLL, 0);
 377
 378         /* normal operation for the cal pll  */
 379         tda18271_charge_pump_source(fe, TDA18271_CAL_PLL, 0);
 380
 381         msleep(10); /* plls locking */
 382
 383         /* launch the rf tracking filters calibration */
 384         regs[R_EB20]  |= 0x20;
 385         tda18271_write_regs(fe, R_EB20, 1);
 386
 387         msleep(60); /* calibration */
 388
 389         /* --------------------------------------------------------------- */
 390
 391         /* set CAL mode to normal */
 392         regs[R_EP4]  &= ~0x03;
 393
 394         /* switch on agc1 */
 395         regs[R_EP3]  &= ~0x40; /* sm_lt = 0 */
 396
 397         regs[R_EB18] &= ~0x03; /* set agc1_gain to  6 dB */
 398         tda18271_write_regs(fe, R_EB18, 1);
 399
 400         tda18271_write_regs(fe, R_EP3, 2);
 401
 402         /* synchronization */
 403         tda18271_write_regs(fe, R_EP1, 1);
 404
 405         /* get calibration result */
 406         tda18271_read_extended(fe);
 407
 408         return regs[R_EB14];
 409 }
 410
 411 static int tda18271_powerscan(struct dvb_frontend *fe,
 412                               u32 *freq_in, u32 *freq_out)
 413 {
 414         struct tda18271_priv *priv = fe->tuner_priv;
 415         unsigned char *regs = priv->tda18271_regs;
 416         int sgn, bcal, count, wait, ret;
 417         u8 cid_target;
 418         u16 count_limit;
 419         u32 freq;
 420
 421         freq = *freq_in;
 422
 423         tda18271_calc_rf_band(fe, &freq);
 424         tda18271_calc_rf_cal(fe, &freq);
 425         tda18271_calc_gain_taper(fe, &freq);
 426         tda18271_lookup_cid_target(fe, &freq, &cid_target, &count_limit);
 427
 428         tda18271_write_regs(fe, R_EP2, 1);
 429         tda18271_write_regs(fe, R_EB14, 1);
 430
 431         /* downconvert frequency */
 432         freq += 1000000;
 433
 434         tda18271_calc_main_pll(fe, freq);
 435         tda18271_write_regs(fe, R_MPD, 4);
 436
 437         msleep(5); /* pll locking */
 438
 439         /* detection mode */
 440         regs[R_EP4]  &= ~0x03;
 441         regs[R_EP4]  |= 0x01;
 442         tda18271_write_regs(fe, R_EP4, 1);
 443
 444         /* launch power detection measurement */
 445         tda18271_write_regs(fe, R_EP2, 1);
 446
 447         /* read power detection info, stored in EB10 */
 448         ret = tda18271_read_extended(fe);
 449         if (tda_fail(ret))
 450                 return ret;
 451
 452         /* algorithm initialization */
 453         sgn = 1;
 454         *freq_out = *freq_in;
 455         bcal = 0;
 456         count = 0;
 457         wait = false;
 458
 459         while ((regs[R_EB10] & 0x3f) < cid_target) {
 460                 /* downconvert updated freq to 1 MHz */
 461                 freq = *freq_in + (sgn * count) + 1000000;
 462
 463                 tda18271_calc_main_pll(fe, freq);
 464                 tda18271_write_regs(fe, R_MPD, 4);
 465
 466                 if (wait) {
 467                         msleep(5); /* pll locking */
 468                         wait = false;
 469                 } else
 470                         udelay(100); /* pll locking */
 471
 472                 /* launch power detection measurement */
 473                 tda18271_write_regs(fe, R_EP2, 1);
 474
 475                 /* read power detection info, stored in EB10 */
 476                 ret = tda18271_read_extended(fe);
 477                 if (tda_fail(ret))
 478                         return ret;
 479
 480                 count += 200;
 481
 482                 if (count <= count_limit)
 483                         continue;
 484
 485                 if (sgn <= 0)
 486                         break;
 487
 488                 sgn = -1 * sgn;
 489                 count = 200;
 490                 wait = true;
 491         }
 492
 493         if ((regs[R_EB10] & 0x3f) >= cid_target) {
 494                 bcal = 1;
 495                 *freq_out = freq - 1000000;
 496         } else
 497                 bcal = 0;
 498
 499         tda_cal("bcal = %d, freq_in = %d, freq_out = %d (freq = %d)\n",
 500                 bcal, *freq_in, *freq_out, freq);
 501
 502         return bcal;
 503 }
 504
 505 static int tda18271_powerscan_init(struct dvb_frontend *fe)
 506 {
 507         struct tda18271_priv *priv = fe->tuner_priv;
 508         unsigned char *regs = priv->tda18271_regs;
 509         int ret;
 510
 511         /* set standard to digital */
 512         regs[R_EP3]  &= ~0x1f; /* clear std bits */
 513         regs[R_EP3]  |= 0x12;
 514
 515         /* set cal mode to normal */
 516         regs[R_EP4]  &= ~0x03;
 517
 518         /* update IF output level */
 519         regs[R_EP4]  &= ~0x1c; /* clear if level bits */
 520
 521         ret = tda18271_write_regs(fe, R_EP3, 2);
 522         if (tda_fail(ret))
 523                 goto fail;
 524
 525         regs[R_EB18] &= ~0x03; /* set agc1_gain to   6 dB */
 526         ret = tda18271_write_regs(fe, R_EB18, 1);
 527         if (tda_fail(ret))
 528                 goto fail;
 529
 530         regs[R_EB21] &= ~0x03; /* set agc2_gain to -15 dB */
 531
 532         /* 1.5 MHz low pass filter */
 533         regs[R_EB23] |= 0x04; /* forcelp_fc2_en = 1 */
 534         regs[R_EB23] |= 0x02; /* lp_fc[2] = 1 */
 535
 536         ret = tda18271_write_regs(fe, R_EB21, 3);
 537 fail:
 538         return ret;
 539 }
 540
 541 static int tda18271_rf_tracking_filters_init(struct dvb_frontend *fe, u32 freq)
 542 {
 543         struct tda18271_priv *priv = fe->tuner_priv;
 544         struct tda18271_rf_tracking_filter_cal *map = priv->rf_cal_state;
 545         unsigned char *regs = priv->tda18271_regs;
 546         int bcal, rf, i;
 547 #define RF1 0
 548 #define RF2 1
 549 #define RF3 2
 550         u32 rf_default[3];
 551         u32 rf_freq[3];
 552         u8 prog_cal[3];
 553         u8 prog_tab[3];
 554
 555         i = tda18271_lookup_rf_band(fe, &freq, NULL);
 556
 557         if (tda_fail(i))
 558                 return i;
 559
 560         rf_default[RF1] = 1000 * map[i].rf1_def;
 561         rf_default[RF2] = 1000 * map[i].rf2_def;
 562         rf_default[RF3] = 1000 * map[i].rf3_def;
 563
 564         for (rf = RF1; rf <= RF3; rf++) {
 565                 if (0 == rf_default[rf])
 566                         return 0;
 567                 tda_cal("freq = %d, rf = %d\n", freq, rf);
 568
 569                 /* look for optimized calibration frequency */
 570                 bcal = tda18271_powerscan(fe, &rf_default[rf], &rf_freq[rf]);
 571                 if (tda_fail(bcal))
 572                         return bcal;
 573
 574                 tda18271_calc_rf_cal(fe, &rf_freq[rf]);
 575                 prog_tab[rf] = regs[R_EB14];
 576
 577                 if (1 == bcal)
 578                         prog_cal[rf] = tda18271_calibrate_rf(fe, rf_freq[rf]);
 579                 else
 580                         prog_cal[rf] = prog_tab[rf];
 581
 582                 switch (rf) {
 583                 case RF1:
 584                         map[i].rf_a1 = 0;
 585                         map[i].rf_b1 = prog_cal[RF1] - prog_tab[RF1];
 586                         map[i].rf1   = rf_freq[RF1] / 1000;
 587                         break;
 588                 case RF2:
 589                         map[i].rf_a1 = (prog_cal[RF2] - prog_tab[RF2] -
 590                                         prog_cal[RF1] + prog_tab[RF1]) /
 591                                 ((rf_freq[RF2] - rf_freq[RF1]) / 1000);
 592                         map[i].rf2   = rf_freq[RF2] / 1000;
 593                         break;
 594                 case RF3:
 595                         map[i].rf_a2 = (prog_cal[RF3] - prog_tab[RF3] -
 596                                         prog_cal[RF2] + prog_tab[RF2]) /
 597                                 ((rf_freq[RF3] - rf_freq[RF2]) / 1000);
 598                         map[i].rf_b2 = prog_cal[RF2] - prog_tab[RF2];
 599                         map[i].rf3   = rf_freq[RF3] / 1000;
 600                         break;
 601                 default:
 602                         BUG();
 603                 }
 604         }
 605
 606         return 0;
 607 }
 608
 609 static int tda18271_calc_rf_filter_curve(struct dvb_frontend *fe)
 610 {
 611         struct tda18271_priv *priv = fe->tuner_priv;
 612         unsigned int i;
 613         int ret;
 614
 615         tda_info("tda18271: performing RF tracking filter calibration\n");
 616
 617         /* wait for die temperature stabilization */
 618         msleep(200);
 619
 620         ret = tda18271_powerscan_init(fe);
 621         if (tda_fail(ret))
 622                 goto fail;
 623
 624         /* rf band calibration */
 625         for (i = 0; priv->rf_cal_state[i].rfmax != 0; i++) {
 626                 ret =
 627                 tda18271_rf_tracking_filters_init(fe, 1000 *
 628                                                   priv->rf_cal_state[i].rfmax);
 629                 if (tda_fail(ret))
 630                         goto fail;
 631         }
 632
 633         priv->tm_rfcal = tda18271_read_thermometer(fe);
 634 fail:
 635         return ret;
 636 }
 637
 638 /* ------------------------------------------------------------------ */
 639
 640 static int tda18271c2_rf_cal_init(struct dvb_frontend *fe)
 641 {
 642         struct tda18271_priv *priv = fe->tuner_priv;
 643         unsigned char *regs = priv->tda18271_regs;
 644         int ret;
 645
 646         /* test RF_CAL_OK to see if we need init */
 647         if ((regs[R_EP1] & 0x10) == 0)
 648                 priv->cal_initialized = false;
 649
 650         if (priv->cal_initialized)
 651                 return 0;
 652
 653         ret = tda18271_calc_rf_filter_curve(fe);
 654         if (tda_fail(ret))
 655                 goto fail;
 656
 657         ret = tda18271_por(fe);
 658         if (tda_fail(ret))
 659                 goto fail;
 660
 661         tda_info("tda18271: RF tracking filter calibration complete\n");
 662
 663         priv->cal_initialized = true;
 664         goto end;
 665 fail:
 666         tda_info("tda18271: RF tracking filter calibration failed!\n");
 667 end:
 668         return ret;
 669 }
 670
 671 static int tda18271c1_rf_tracking_filter_calibration(struct dvb_frontend *fe,
 672                                                      u32 freq, u32 bw)
 673 {
 674         struct tda18271_priv *priv = fe->tuner_priv;
 675         unsigned char *regs = priv->tda18271_regs;
 676         int ret;
 677         u32 N = 0;
 678
 679         /* calculate bp filter */
 680         tda18271_calc_bp_filter(fe, &freq);
 681         tda18271_write_regs(fe, R_EP1, 1);
 682
 683         regs[R_EB4]  &= 0x07;
 684         regs[R_EB4]  |= 0x60;
 685         tda18271_write_regs(fe, R_EB4, 1);
 686
 687         regs[R_EB7]   = 0x60;
 688         tda18271_write_regs(fe, R_EB7, 1);
 689
 690         regs[R_EB14]  = 0x00;
 691         tda18271_write_regs(fe, R_EB14, 1);
 692
 693         regs[R_EB20]  = 0xcc;
 694         tda18271_write_regs(fe, R_EB20, 1);
 695
 696         /* set cal mode to RF tracking filter calibration */
 697         regs[R_EP4]  |= 0x03;
 698
 699         /* calculate cal pll */
 700
 701         switch (priv->mode) {
 702         case TDA18271_ANALOG:
 703                 N = freq - 1250000;
 704                 break;
 705         case TDA18271_DIGITAL:
 706                 N = freq + bw / 2;
 707                 break;
 708         }
 709
 710         tda18271_calc_cal_pll(fe, N);
 711
 712         /* calculate main pll */
 713
 714         switch (priv->mode) {
 715         case TDA18271_ANALOG:
 716                 N = freq - 250000;
 717                 break;
 718         case TDA18271_DIGITAL:
 719                 N = freq + bw / 2 + 1000000;
 720                 break;
 721         }
 722
 723         tda18271_calc_main_pll(fe, N);
 724
 725         ret = tda18271_write_regs(fe, R_EP3, 11);
 726         if (tda_fail(ret))
 727                 return ret;
 728
 729         msleep(5); /* RF tracking filter calibration initialization */
 730
 731         /* search for K,M,CO for RF calibration */
 732         tda18271_calc_km(fe, &freq);
 733         tda18271_write_regs(fe, R_EB13, 1);
 734
 735         /* search for rf band */
 736         tda18271_calc_rf_band(fe, &freq);
 737
 738         /* search for gain taper */
 739         tda18271_calc_gain_taper(fe, &freq);
 740
 741         tda18271_write_regs(fe, R_EP2, 1);
 742         tda18271_write_regs(fe, R_EP1, 1);
 743         tda18271_write_regs(fe, R_EP2, 1);
 744         tda18271_write_regs(fe, R_EP1, 1);
 745
 746         regs[R_EB4]  &= 0x07;
 747         regs[R_EB4]  |= 0x40;
 748         tda18271_write_regs(fe, R_EB4, 1);
 749
 750         regs[R_EB7]   = 0x40;
 751         tda18271_write_regs(fe, R_EB7, 1);
 752         msleep(10); /* pll locking */
 753
 754         regs[R_EB20]  = 0xec;
 755         tda18271_write_regs(fe, R_EB20, 1);
 756         msleep(60); /* RF tracking filter calibration completion */
 757
 758         regs[R_EP4]  &= ~0x03; /* set cal mode to normal */
 759         tda18271_write_regs(fe, R_EP4, 1);
 760
 761         tda18271_write_regs(fe, R_EP1, 1);
 762
 763         /* RF tracking filter correction for VHF_Low band */
 764         if (0 == tda18271_calc_rf_cal(fe, &freq))
 765                 tda18271_write_regs(fe, R_EB14, 1);
 766
 767         return 0;
 768 }
 769
 770 /* ------------------------------------------------------------------ */
 771
 772 static int tda18271_ir_cal_init(struct dvb_frontend *fe)
 773 {
 774         struct tda18271_priv *priv = fe->tuner_priv;
 775         unsigned char *regs = priv->tda18271_regs;
 776         int ret;
 777
 778         ret = tda18271_read_regs(fe);
 779         if (tda_fail(ret))
 780                 goto fail;
 781
 782         /* test IR_CAL_OK to see if we need init */
 783         if ((regs[R_EP1] & 0x08) == 0)
 784                 ret = tda18271_init_regs(fe);
 785 fail:
 786         return ret;
 787 }
 788
 789 static int tda18271_init(struct dvb_frontend *fe)
 790 {
 791         struct tda18271_priv *priv = fe->tuner_priv;
 792         int ret;
 793
 794         mutex_lock(&priv->lock);
 795
 796         /* power up */
 797         ret = tda18271_set_standby_mode(fe, 0, 0, 0);
 798         if (tda_fail(ret))
 799                 goto fail;
 800
 801         /* initialization */
 802         ret = tda18271_ir_cal_init(fe);
 803         if (tda_fail(ret))
 804                 goto fail;
 805
 806         if (priv->id == TDA18271HDC2)
 807                 tda18271c2_rf_cal_init(fe);
 808 fail:
 809         mutex_unlock(&priv->lock);
 810
 811         return ret;
 812 }
 813
 814 static int tda18271_tune(struct dvb_frontend *fe,
 815                          struct tda18271_std_map_item *map, u32 freq, u32 bw)
 816 {
 817         struct tda18271_priv *priv = fe->tuner_priv;
 818         int ret;
 819
 820         tda_dbg("freq = %d, ifc = %d, bw = %d, agc_mode = %d, std = %d\n",
 821                 freq, map->if_freq, bw, map->agc_mode, map->std);
 822
 823         ret = tda18271_init(fe);
 824         if (tda_fail(ret))
 825                 goto fail;
 826
 827         mutex_lock(&priv->lock);
 828
 829         switch (priv->id) {
 830         case TDA18271HDC1:
 831                 tda18271c1_rf_tracking_filter_calibration(fe, freq, bw);
 832                 break;
 833         case TDA18271HDC2:
 834                 tda18271c2_rf_tracking_filters_correction(fe, freq);
 835                 break;
 836         }
 837         ret = tda18271_channel_configuration(fe, map, freq, bw);
 838
 839         mutex_unlock(&priv->lock);
 840 fail:
 841         return ret;
 842 }
 843
 844 /* ------------------------------------------------------------------ */
 845
 846 static int tda18271_set_params(struct dvb_frontend *fe,
 847                                struct dvb_frontend_parameters *params)
 848 {
 849         struct tda18271_priv *priv = fe->tuner_priv;
 850         struct tda18271_std_map *std_map = &priv->std;
 851         struct tda18271_std_map_item *map;
 852         int ret;
 853         u32 bw, freq = params->frequency;
 854
 855         priv->mode = TDA18271_DIGITAL;
 856
 857         if (fe->ops.info.type == FE_ATSC) {
 858                 switch (params->u.vsb.modulation) {
 859                 case VSB_8:
 860                 case VSB_16:
 861                         map = &std_map->atsc_6;
 862                         break;
 863                 case QAM_64:
 864                 case QAM_256:
 865                         map = &std_map->qam_6;
 866                         break;
 867                 default:
 868                         tda_warn("modulation not set!\n");
 869                         return -EINVAL;
 870                 }
 871 #if 0
 872                 /* userspace request is already center adjusted */
 873                 freq += 1750000; /* Adjust to center (+1.75MHZ) */
 874 #endif
 875                 bw = 6000000;
 876         } else if (fe->ops.info.type == FE_OFDM) {
 877                 switch (params->u.ofdm.bandwidth) {
 878                 case BANDWIDTH_6_MHZ:
 879                         bw = 6000000;
 880                         map = &std_map->dvbt_6;
 881                         break;
 882                 case BANDWIDTH_7_MHZ:
 883                         bw = 7000000;
 884                         map = &std_map->dvbt_7;
 885                         break;
 886                 case BANDWIDTH_8_MHZ:
 887                         bw = 8000000;
 888                         map = &std_map->dvbt_8;
 889                         break;
 890                 default:
 891                         tda_warn("bandwidth not set!\n");
 892                         return -EINVAL;
 893                 }
 894         } else {
 895                 tda_warn("modulation type not supported!\n");
 896                 return -EINVAL;
 897         }
 898
 899         /* When tuning digital, the analog demod must be tri-stated */
 900         if (fe->ops.analog_ops.standby)
 901                 fe->ops.analog_ops.standby(fe);
 902
 903         ret = tda18271_tune(fe, map, freq, bw);
 904
 905         if (tda_fail(ret))
 906                 goto fail;
 907
 908         priv->frequency = freq;
 909         priv->bandwidth = (fe->ops.info.type == FE_OFDM) ?
 910                 params->u.ofdm.bandwidth : 0;
 911 fail:
 912         return ret;
 913 }
 914
 915 static int tda18271_set_analog_params(struct dvb_frontend *fe,
 916                                       struct analog_parameters *params)
 917 {
 918         struct tda18271_priv *priv = fe->tuner_priv;
 919         struct tda18271_std_map *std_map = &priv->std;
 920         struct tda18271_std_map_item *map;
 921         char *mode;
 922         int ret;
 923         u32 freq = params->frequency * 62500;
 924
 925         priv->mode = TDA18271_ANALOG;
 926
 927         if (params->mode == V4L2_TUNER_RADIO) {
 928                 freq = freq / 1000;
 929                 map = &std_map->fm_radio;
 930                 mode = "fm";
 931         } else if (params->std & V4L2_STD_MN) {
 932                 map = &std_map->atv_mn;
 933                 mode = "MN";
 934         } else if (params->std & V4L2_STD_B) {
 935                 map = &std_map->atv_b;
 936                 mode = "B";
 937         } else if (params->std & V4L2_STD_GH) {
 938                 map = &std_map->atv_gh;
 939                 mode = "GH";
 940         } else if (params->std & V4L2_STD_PAL_I) {
 941                 map = &std_map->atv_i;
 942                 mode = "I";
 943         } else if (params->std & V4L2_STD_DK) {
 944                 map = &std_map->atv_dk;
 945                 mode = "DK";
 946         } else if (params->std & V4L2_STD_SECAM_L) {
 947                 map = &std_map->atv_l;
 948                 mode = "L";
 949         } else if (params->std & V4L2_STD_SECAM_LC) {
 950                 map = &std_map->atv_lc;
 951                 mode = "L'";
 952         } else {
 953                 map = &std_map->atv_i;
 954                 mode = "xx";
 955         }
 956
 957         tda_dbg("setting tda18271 to system %s\n", mode);
 958
 959         ret = tda18271_tune(fe, map, freq, 0);
 960
 961         if (tda_fail(ret))
 962                 goto fail;
 963
 964         priv->frequency = freq;
 965         priv->bandwidth = 0;
 966 fail:
 967         return ret;
 968 }
 969
 970 static int tda18271_sleep(struct dvb_frontend *fe)
 971 {
 972         struct tda18271_priv *priv = fe->tuner_priv;
 973         int ret;
 974
 975         mutex_lock(&priv->lock);
 976
 977         /* standby mode w/ slave tuner output
 978          * & loop thru & xtal oscillator on */
 979         ret = tda18271_set_standby_mode(fe, 1, 0, 0);
 980
 981         mutex_unlock(&priv->lock);
 982
 983         return ret;
 984 }
 985
 986 static int tda18271_release(struct dvb_frontend *fe)
 987 {
 988         struct tda18271_priv *priv = fe->tuner_priv;
 989
 990         mutex_lock(&tda18271_list_mutex);
 991
 992         if (priv)
 993                 hybrid_tuner_release_state(priv);
 994
 995         mutex_unlock(&tda18271_list_mutex);
 996
 997         fe->tuner_priv = NULL;
 998
 999         return 0;
1000 }
1001
1002 static int tda18271_get_frequency(struct dvb_frontend *fe, u32 *frequency)
1003 {
1004         struct tda18271_priv *priv = fe->tuner_priv;
1005         *frequency = priv->frequency;
1006         return 0;
1007 }
1008
1009 static int tda18271_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
1010 {
1011         struct tda18271_priv *priv = fe->tuner_priv;
1012         *bandwidth = priv->bandwidth;
1013         return 0;
1014 }
1015
1016 /* ------------------------------------------------------------------ */
1017
1018 #define tda18271_update_std(std_cfg, name) do {                         \
1019         if (map->std_cfg.if_freq +                                      \
1020                 map->std_cfg.agc_mode + map->std_cfg.std +              \
1021                 map->std_cfg.if_lvl + map->std_cfg.rfagc_top > 0) {     \
1022                 tda_dbg("Using custom std config for %s\n", name);      \
1023                 memcpy(&std->std_cfg, &map->std_cfg,                    \
1024                         sizeof(struct tda18271_std_map_item));          \
1025         } } while (0)
1026
1027 #define tda18271_dump_std_item(std_cfg, name) do {                      \
1028         tda_dbg("(%s) if_freq = %d, agc_mode = %d, std = %d, "          \
1029                 "if_lvl = %d, rfagc_top = 0x%02x\n",                    \
1030                 name, std->std_cfg.if_freq,                             \
1031                 std->std_cfg.agc_mode, std->std_cfg.std,                \
1032                 std->std_cfg.if_lvl, std->std_cfg.rfagc_top);           \
1033         } while (0)
1034
1035 static int tda18271_dump_std_map(struct dvb_frontend *fe)
1036 {
1037         struct tda18271_priv *priv = fe->tuner_priv;
1038         struct tda18271_std_map *std = &priv->std;
1039
1040         tda_dbg("========== STANDARD MAP SETTINGS ==========\n");
1041         tda18271_dump_std_item(fm_radio, "  fm  ");
1042         tda18271_dump_std_item(atv_b,  "atv b ");
1043         tda18271_dump_std_item(atv_dk, "atv dk");
1044         tda18271_dump_std_item(atv_gh, "atv gh");
1045         tda18271_dump_std_item(atv_i,  "atv i ");
1046         tda18271_dump_std_item(atv_l,  "atv l ");
1047         tda18271_dump_std_item(atv_lc, "atv l'");
1048         tda18271_dump_std_item(atv_mn, "atv mn");
1049         tda18271_dump_std_item(atsc_6, "atsc 6");
1050         tda18271_dump_std_item(dvbt_6, "dvbt 6");
1051         tda18271_dump_std_item(dvbt_7, "dvbt 7");
1052         tda18271_dump_std_item(dvbt_8, "dvbt 8");
1053         tda18271_dump_std_item(qam_6,  "qam 6 ");
1054         tda18271_dump_std_item(qam_8,  "qam 8 ");
1055
1056         return 0;
1057 }
1058
1059 static int tda18271_update_std_map(struct dvb_frontend *fe,
1060                                    struct tda18271_std_map *map)
1061 {
1062         struct tda18271_priv *priv = fe->tuner_priv;
1063         struct tda18271_std_map *std = &priv->std;
1064
1065         if (!map)
1066                 return -EINVAL;
1067
1068         tda18271_update_std(fm_radio, "fm");
1069         tda18271_update_std(atv_b,  "atv b");
1070         tda18271_update_std(atv_dk, "atv dk");
1071         tda18271_update_std(atv_gh, "atv gh");
1072         tda18271_update_std(atv_i,  "atv i");
1073         tda18271_update_std(atv_l,  "atv l");
1074         tda18271_update_std(atv_lc, "atv l'");
1075         tda18271_update_std(atv_mn, "atv mn");
1076         tda18271_update_std(atsc_6, "atsc 6");
1077         tda18271_update_std(dvbt_6, "dvbt 6");
1078         tda18271_update_std(dvbt_7, "dvbt 7");
1079         tda18271_update_std(dvbt_8, "dvbt 8");
1080         tda18271_update_std(qam_6,  "qam 6");
1081         tda18271_update_std(qam_8,  "qam 8");
1082
1083         return 0;
1084 }
1085
1086 static int tda18271_get_id(struct dvb_frontend *fe)
1087 {
1088         struct tda18271_priv *priv = fe->tuner_priv;
1089         unsigned char *regs = priv->tda18271_regs;
1090         char *name;
1091         int ret = 0;
1092
1093         mutex_lock(&priv->lock);
1094         tda18271_read_regs(fe);
1095         mutex_unlock(&priv->lock);
1096
1097         switch (regs[R_ID] & 0x7f) {
1098         case 3:
1099                 name = "TDA18271HD/C1";
1100                 priv->id = TDA18271HDC1;
1101                 break;
1102         case 4:
1103                 name = "TDA18271HD/C2";
1104                 priv->id = TDA18271HDC2;
1105                 break;
1106         default:
1107                 name = "Unknown device";
1108                 ret = -EINVAL;
1109                 break;
1110         }
1111
1112         tda_info("%s detected @ %d-%04x%s\n", name,
1113                  i2c_adapter_id(priv->i2c_props.adap),
1114                  priv->i2c_props.addr,
1115                  (0 == ret) ? "" : ", device not supported.");
1116
1117         return ret;
1118 }
1119
1120 static struct dvb_tuner_ops tda18271_tuner_ops = {
1121         .info = {
1122                 .name = "NXP TDA18271HD",
1123                 .frequency_min  =  45000000,
1124                 .frequency_max  = 864000000,
1125                 .frequency_step =     62500
1126         },
1127         .init              = tda18271_init,
1128         .sleep             = tda18271_sleep,
1129         .set_params        = tda18271_set_params,
1130         .set_analog_params = tda18271_set_analog_params,
1131         .release           = tda18271_release,
1132         .get_frequency     = tda18271_get_frequency,
1133         .get_bandwidth     = tda18271_get_bandwidth,
1134 };
1135
1136 struct dvb_frontend *tda18271_attach(struct dvb_frontend *fe, u8 addr,
1137                                      struct i2c_adapter *i2c,
1138                                      struct tda18271_config *cfg)
1139 {
1140         struct tda18271_priv *priv = NULL;
1141         int instance;
1142
1143         mutex_lock(&tda18271_list_mutex);
1144
1145         instance = hybrid_tuner_request_state(struct tda18271_priv, priv,
1146                                               hybrid_tuner_instance_list,
1147                                               i2c, addr, "tda18271");
1148         switch (instance) {
1149         case 0:
1150                 goto fail;
1151                 break;
1152         case 1:
1153                 /* new tuner instance */
1154                 priv->gate = (cfg) ? cfg->gate : TDA18271_GATE_AUTO;
1155                 priv->role = (cfg) ? cfg->role : TDA18271_MASTER;
1156                 priv->cal_initialized = false;
1157                 mutex_init(&priv->lock);
1158
1159                 fe->tuner_priv = priv;
1160
1161                 if (cfg)
1162                         priv->small_i2c = cfg->small_i2c;
1163
1164                 if (tda_fail(tda18271_get_id(fe)))
1165                         goto fail;
1166
1167                 if (tda_fail(tda18271_assign_map_layout(fe)))
1168                         goto fail;
1169
1170                 mutex_lock(&priv->lock);
1171                 tda18271_init_regs(fe);
1172
1173                 if ((tda18271_cal_on_startup) && (priv->id == TDA18271HDC2))
1174                         tda18271c2_rf_cal_init(fe);
1175
1176                 mutex_unlock(&priv->lock);
1177                 break;
1178         default:
1179                 /* existing tuner instance */
1180                 fe->tuner_priv = priv;
1181
1182                 /* allow dvb driver to override i2c gate setting */
1183                 if ((cfg) && (cfg->gate != TDA18271_GATE_ANALOG))
1184                         priv->gate = cfg->gate;
1185                 break;
1186         }
1187
1188         /* override default std map with values in config struct */
1189         if ((cfg) && (cfg->std_map))
1190                 tda18271_update_std_map(fe, cfg->std_map);
1191
1192         mutex_unlock(&tda18271_list_mutex);
1193
1194         memcpy(&fe->ops.tuner_ops, &tda18271_tuner_ops,
1195                sizeof(struct dvb_tuner_ops));
1196
1197         if (tda18271_debug & (DBG_MAP | DBG_ADV))
1198                 tda18271_dump_std_map(fe);
1199
1200         return fe;
1201 fail:
1202         mutex_unlock(&tda18271_list_mutex);
1203
1204         tda18271_release(fe);
1205         return NULL;
1206 }
1207 EXPORT_SYMBOL_GPL(tda18271_attach);
1208 MODULE_DESCRIPTION("NXP TDA18271HD analog / digital tuner driver");
1209 MODULE_AUTHOR("Michael Krufky <mkrufky@linuxtv.org>");
1210 MODULE_LICENSE("GPL");
1211 MODULE_VERSION("0.3");
1212
1213 /*
1214  * Overrides for Emacs so that we follow Linus's tabbing style.
1215  * ---------------------------------------------------------------------------
1216  * Local variables:
1217  * c-basic-offset: 8
1218  * End:
1219  */