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