git.oblomov.eu Git - linux-2.6/blob - drivers/media/dvb/frontends/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 LIST_HEAD(tda18271_list);
  31 static DEFINE_MUTEX(tda18271_list_mutex);
  32
  33 /*---------------------------------------------------------------------*/
  34
  35 static int tda18271_ir_cal_init(struct dvb_frontend *fe)
  36 {
  37         struct tda18271_priv *priv = fe->tuner_priv;
  38         unsigned char *regs = priv->tda18271_regs;
  39
  40         tda18271_read_regs(fe);
  41
  42         /* test IR_CAL_OK to see if we need init */
  43         if ((regs[R_EP1] & 0x08) == 0)
  44                 tda18271_init_regs(fe);
  45
  46         return 0;
  47 }
  48
  49 /* ------------------------------------------------------------------ */
  50
  51 static int tda18271_channel_configuration(struct dvb_frontend *fe,
  52                                           u32 ifc, u32 freq, u32 bw, u8 std,
  53                                           int radio)
  54 {
  55         struct tda18271_priv *priv = fe->tuner_priv;
  56         unsigned char *regs = priv->tda18271_regs;
  57         u32 N;
  58
  59         /* update TV broadcast parameters */
  60
  61         /* set standard */
  62         regs[R_EP3]  &= ~0x1f; /* clear std bits */
  63         regs[R_EP3]  |= std;
  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
  71         switch (priv->mode) {
  72         case TDA18271_ANALOG:
  73                 regs[R_MPD]  &= ~0x80; /* IF notch = 0 */
  74                 break;
  75         case TDA18271_DIGITAL:
  76                 regs[R_EP4]  |= 0x04; /* IF level = 1 */
  77                 regs[R_MPD]  |= 0x80; /* IF notch = 1 */
  78                 break;
  79         }
  80
  81         if (radio)
  82                 regs[R_EP4]  |=  0x80;
  83         else
  84                 regs[R_EP4]  &= ~0x80;
  85
  86         /* update RF_TOP / IF_TOP */
  87         switch (priv->mode) {
  88         case TDA18271_ANALOG:
  89                 regs[R_EB22]  = 0x2c;
  90                 break;
  91         case TDA18271_DIGITAL:
  92                 regs[R_EB22]  = 0x37;
  93                 break;
  94         }
  95         tda18271_write_regs(fe, R_EB22, 1);
  96
  97         /* --------------------------------------------------------------- */
  98
  99         /* disable Power Level Indicator */
 100         regs[R_EP1]  |= 0x40;
 101
 102         /* frequency dependent parameters */
 103
 104         tda18271_calc_ir_measure(fe, &freq);
 105
 106         tda18271_calc_bp_filter(fe, &freq);
 107
 108         tda18271_calc_rf_band(fe, &freq);
 109
 110         tda18271_calc_gain_taper(fe, &freq);
 111
 112         /* --------------------------------------------------------------- */
 113
 114         /* dual tuner and agc1 extra configuration */
 115
 116         /* main vco when Master, cal vco when slave */
 117         regs[R_EB1]  |= 0x04; /* FIXME: assumes master */
 118
 119         /* agc1 always active */
 120         regs[R_EB1]  &= ~0x02;
 121
 122         /* agc1 has priority on agc2 */
 123         regs[R_EB1]  &= ~0x01;
 124
 125         tda18271_write_regs(fe, R_EB1, 1);
 126
 127         /* --------------------------------------------------------------- */
 128
 129         N = freq + ifc;
 130
 131         /* FIXME: assumes master */
 132         tda18271_calc_main_pll(fe, N);
 133         tda18271_write_regs(fe, R_MPD, 4);
 134
 135         tda18271_write_regs(fe, R_TM, 7);
 136
 137         /* main pll charge pump source */
 138         regs[R_EB4] |= 0x20;
 139         tda18271_write_regs(fe, R_EB4, 1);
 140
 141         msleep(1);
 142
 143         /* normal operation for the main pll */
 144         regs[R_EB4] &= ~0x20;
 145         tda18271_write_regs(fe, R_EB4, 1);
 146
 147         msleep(5);
 148
 149         return 0;
 150 }
 151
 152 static int tda18271_read_thermometer(struct dvb_frontend *fe)
 153 {
 154         struct tda18271_priv *priv = fe->tuner_priv;
 155         unsigned char *regs = priv->tda18271_regs;
 156         int tm;
 157
 158         /* switch thermometer on */
 159         regs[R_TM]   |= 0x10;
 160         tda18271_write_regs(fe, R_TM, 1);
 161
 162         /* read thermometer info */
 163         tda18271_read_regs(fe);
 164
 165         if ((((regs[R_TM] & 0x0f) == 0x00) && ((regs[R_TM] & 0x20) == 0x20)) ||
 166             (((regs[R_TM] & 0x0f) == 0x08) && ((regs[R_TM] & 0x20) == 0x00))) {
 167
 168                 if ((regs[R_TM] & 0x20) == 0x20)
 169                         regs[R_TM] &= ~0x20;
 170                 else
 171                         regs[R_TM] |= 0x20;
 172
 173                 tda18271_write_regs(fe, R_TM, 1);
 174
 175                 msleep(10); /* temperature sensing */
 176
 177                 /* read thermometer info */
 178                 tda18271_read_regs(fe);
 179         }
 180
 181         tm = tda18271_lookup_thermometer(fe);
 182
 183         /* switch thermometer off */
 184         regs[R_TM]   &= ~0x10;
 185         tda18271_write_regs(fe, R_TM, 1);
 186
 187         /* set CAL mode to normal */
 188         regs[R_EP4]  &= ~0x03;
 189         tda18271_write_regs(fe, R_EP4, 1);
 190
 191         return tm;
 192 }
 193
 194 static int tda18271_rf_tracking_filters_correction(struct dvb_frontend *fe,
 195                                                    u32 freq)
 196 {
 197         struct tda18271_priv *priv = fe->tuner_priv;
 198         struct tda18271_rf_tracking_filter_cal *map = priv->rf_cal_state;
 199         unsigned char *regs = priv->tda18271_regs;
 200         int tm_current, rfcal_comp, approx, i;
 201         u8 dc_over_dt, rf_tab;
 202
 203         /* power up */
 204         regs[R_EP3]  &= ~0xe0; /* sm = 0, sm_lt = 0, sm_xt = 0 */
 205         tda18271_write_regs(fe, R_EP3, 1);
 206
 207         /* read die current temperature */
 208         tm_current = tda18271_read_thermometer(fe);
 209
 210         /* frequency dependent parameters */
 211
 212         tda18271_calc_rf_cal(fe, &freq);
 213         rf_tab = regs[R_EB14];
 214
 215         i = tda18271_lookup_rf_band(fe, &freq, NULL);
 216         if (i < 0)
 217                 return -EINVAL;
 218
 219         if ((0 == map[i].rf3) || (freq / 1000 < map[i].rf2)) {
 220                 approx = map[i].rf_a1 *
 221                         (freq / 1000 - map[i].rf1) + map[i].rf_b1 + rf_tab;
 222         } else {
 223                 approx = map[i].rf_a2 *
 224                         (freq / 1000 - map[i].rf2) + map[i].rf_b2 + rf_tab;
 225         }
 226
 227         if (approx < 0)
 228                 approx = 0;
 229         if (approx > 255)
 230                 approx = 255;
 231
 232         tda18271_lookup_map(fe, RF_CAL_DC_OVER_DT, &freq, &dc_over_dt);
 233
 234         /* calculate temperature compensation */
 235         rfcal_comp = dc_over_dt * (tm_current - priv->tm_rfcal);
 236
 237         regs[R_EB14] = approx + rfcal_comp;
 238         tda18271_write_regs(fe, R_EB14, 1);
 239
 240         return 0;
 241 }
 242
 243 static int tda18271_por(struct dvb_frontend *fe)
 244 {
 245         struct tda18271_priv *priv = fe->tuner_priv;
 246         unsigned char *regs = priv->tda18271_regs;
 247
 248         /* power up detector 1 */
 249         regs[R_EB12] &= ~0x20;
 250         tda18271_write_regs(fe, R_EB12, 1);
 251
 252         regs[R_EB18] &= ~0x80; /* turn agc1 loop on */
 253         regs[R_EB18] &= ~0x03; /* set agc1_gain to  6 dB */
 254         tda18271_write_regs(fe, R_EB18, 1);
 255
 256         regs[R_EB21] |= 0x03; /* set agc2_gain to -6 dB */
 257
 258         /* POR mode */
 259         regs[R_EP3]  &= ~0xe0; /* clear sm, sm_lt, sm_xt */
 260         regs[R_EP3]  |= 0x80; /* sm = 1, sm_lt = 0, sm_xt = 0 */
 261         tda18271_write_regs(fe, R_EP3, 1);
 262
 263         /* disable 1.5 MHz low pass filter */
 264         regs[R_EB23] &= ~0x04; /* forcelp_fc2_en = 0 */
 265         regs[R_EB23] &= ~0x02; /* XXX: lp_fc[2] = 0 */
 266         tda18271_write_regs(fe, R_EB21, 3);
 267
 268         return 0;
 269 }
 270
 271 static int tda18271_calibrate_rf(struct dvb_frontend *fe, u32 freq)
 272 {
 273         struct tda18271_priv *priv = fe->tuner_priv;
 274         unsigned char *regs = priv->tda18271_regs;
 275         u32 N;
 276
 277         /* set CAL mode to normal */
 278         regs[R_EP4]  &= ~0x03;
 279         tda18271_write_regs(fe, R_EP4, 1);
 280
 281         /* switch off agc1 */
 282         regs[R_EP3]  |= 0x40; /* sm_lt = 1 */
 283
 284         regs[R_EB18] |= 0x03; /* set agc1_gain to 15 dB */
 285         tda18271_write_regs(fe, R_EB18, 1);
 286
 287         /* frequency dependent parameters */
 288
 289         tda18271_calc_bp_filter(fe, &freq);
 290         tda18271_calc_gain_taper(fe, &freq);
 291         tda18271_calc_rf_band(fe, &freq);
 292         tda18271_calc_km(fe, &freq);
 293
 294         tda18271_write_regs(fe, R_EP1, 3);
 295         tda18271_write_regs(fe, R_EB13, 1);
 296
 297         /* main pll charge pump source */
 298         regs[R_EB4]  |= 0x20;
 299         tda18271_write_regs(fe, R_EB4, 1);
 300
 301         /* cal pll charge pump source */
 302         regs[R_EB7]  |= 0x20;
 303         tda18271_write_regs(fe, R_EB7, 1);
 304
 305         /* force dcdc converter to 0 V */
 306         regs[R_EB14] = 0x00;
 307         tda18271_write_regs(fe, R_EB14, 1);
 308
 309         /* disable plls lock */
 310         regs[R_EB20] &= ~0x20;
 311         tda18271_write_regs(fe, R_EB20, 1);
 312
 313         /* set CAL mode to RF tracking filter calibration */
 314         regs[R_EP4]  |= 0x03;
 315         tda18271_write_regs(fe, R_EP4, 2);
 316
 317         /* --------------------------------------------------------------- */
 318
 319         /* set the internal calibration signal */
 320         N = freq;
 321
 322         tda18271_calc_main_pll(fe, N);
 323         tda18271_write_regs(fe, R_MPD, 4);
 324
 325         /* downconvert internal calibration */
 326         N += 1000000;
 327
 328         tda18271_calc_main_pll(fe, N);
 329         tda18271_write_regs(fe, R_MPD, 4);
 330
 331         msleep(5);
 332
 333         tda18271_write_regs(fe, R_EP2, 1);
 334         tda18271_write_regs(fe, R_EP1, 1);
 335         tda18271_write_regs(fe, R_EP2, 1);
 336         tda18271_write_regs(fe, R_EP1, 1);
 337
 338         /* --------------------------------------------------------------- */
 339
 340         /* normal operation for the main pll */
 341         regs[R_EB4] &= ~0x20;
 342         tda18271_write_regs(fe, R_EB4, 1);
 343
 344         /* normal operation for the cal pll  */
 345         regs[R_EB7] &= ~0x20;
 346         tda18271_write_regs(fe, R_EB7, 1);
 347
 348         msleep(5); /* plls locking */
 349
 350         /* launch the rf tracking filters calibration */
 351         regs[R_EB20]  |= 0x20;
 352         tda18271_write_regs(fe, R_EB20, 1);
 353
 354         msleep(60); /* calibration */
 355
 356         /* --------------------------------------------------------------- */
 357
 358         /* set CAL mode to normal */
 359         regs[R_EP4]  &= ~0x03;
 360
 361         /* switch on agc1 */
 362         regs[R_EP3]  &= ~0x40; /* sm_lt = 0 */
 363
 364         regs[R_EB18] &= ~0x03; /* set agc1_gain to  6 dB */
 365         tda18271_write_regs(fe, R_EB18, 1);
 366
 367         tda18271_write_regs(fe, R_EP3, 2);
 368
 369         /* synchronization */
 370         tda18271_write_regs(fe, R_EP1, 1);
 371
 372         /* get calibration result */
 373         tda18271_read_extended(fe);
 374
 375         return regs[R_EB14];
 376 }
 377
 378 static int tda18271_powerscan(struct dvb_frontend *fe,
 379                               u32 *freq_in, u32 *freq_out)
 380 {
 381         struct tda18271_priv *priv = fe->tuner_priv;
 382         unsigned char *regs = priv->tda18271_regs;
 383         int sgn, bcal, count, wait;
 384         u8 cid_target;
 385         u16 count_limit;
 386         u32 freq;
 387
 388         freq = *freq_in;
 389
 390         tda18271_calc_rf_band(fe, &freq);
 391         tda18271_calc_rf_cal(fe, &freq);
 392         tda18271_calc_gain_taper(fe, &freq);
 393         tda18271_lookup_cid_target(fe, &freq, &cid_target, &count_limit);
 394
 395         tda18271_write_regs(fe, R_EP2, 1);
 396         tda18271_write_regs(fe, R_EB14, 1);
 397
 398         /* downconvert frequency */
 399         freq += 1000000;
 400
 401         tda18271_calc_main_pll(fe, freq);
 402         tda18271_write_regs(fe, R_MPD, 4);
 403
 404         msleep(5); /* pll locking */
 405
 406         /* detection mode */
 407         regs[R_EP4]  &= ~0x03;
 408         regs[R_EP4]  |= 0x01;
 409         tda18271_write_regs(fe, R_EP4, 1);
 410
 411         /* launch power detection measurement */
 412         tda18271_write_regs(fe, R_EP2, 1);
 413
 414         /* read power detection info, stored in EB10 */
 415         tda18271_read_extended(fe);
 416
 417         /* algorithm initialization */
 418         sgn = 1;
 419         *freq_out = *freq_in;
 420         bcal = 0;
 421         count = 0;
 422         wait = false;
 423
 424         while ((regs[R_EB10] & 0x3f) < cid_target) {
 425                 /* downconvert updated freq to 1 MHz */
 426                 freq = *freq_in + (sgn * count) + 1000000;
 427
 428                 tda18271_calc_main_pll(fe, freq);
 429                 tda18271_write_regs(fe, R_MPD, 4);
 430
 431                 if (wait) {
 432                         msleep(5); /* pll locking */
 433                         wait = false;
 434                 } else
 435                         udelay(100); /* pll locking */
 436
 437                 /* launch power detection measurement */
 438                 tda18271_write_regs(fe, R_EP2, 1);
 439
 440                 /* read power detection info, stored in EB10 */
 441                 tda18271_read_extended(fe);
 442
 443                 count += 200;
 444
 445                 if (count < count_limit)
 446                         continue;
 447
 448                 if (sgn <= 0)
 449                         break;
 450
 451                 sgn = -1 * sgn;
 452                 count = 200;
 453                 wait = true;
 454         }
 455
 456         if ((regs[R_EB10] & 0x3f) >= cid_target) {
 457                 bcal = 1;
 458                 *freq_out = freq - 1000000;
 459         } else
 460                 bcal = 0;
 461
 462         tda_cal("bcal = %d, freq_in = %d, freq_out = %d (freq = %d)\n",
 463                 bcal, *freq_in, *freq_out, freq);
 464
 465         return bcal;
 466 }
 467
 468 static int tda18271_powerscan_init(struct dvb_frontend *fe)
 469 {
 470         struct tda18271_priv *priv = fe->tuner_priv;
 471         unsigned char *regs = priv->tda18271_regs;
 472
 473         /* set standard to digital */
 474         regs[R_EP3]  &= ~0x1f; /* clear std bits */
 475         regs[R_EP3]  |= 0x12;
 476
 477         /* set cal mode to normal */
 478         regs[R_EP4]  &= ~0x03;
 479
 480         /* update IF output level & IF notch frequency */
 481         regs[R_EP4]  &= ~0x1c; /* clear if level bits */
 482
 483         tda18271_write_regs(fe, R_EP3, 2);
 484
 485         regs[R_EB18] &= ~0x03; /* set agc1_gain to   6 dB */
 486         tda18271_write_regs(fe, R_EB18, 1);
 487
 488         regs[R_EB21] &= ~0x03; /* set agc2_gain to -15 dB */
 489
 490         /* 1.5 MHz low pass filter */
 491         regs[R_EB23] |= 0x04; /* forcelp_fc2_en = 1 */
 492         regs[R_EB23] |= 0x02; /* lp_fc[2] = 1 */
 493
 494         tda18271_write_regs(fe, R_EB21, 3);
 495
 496         return 0;
 497 }
 498
 499 static int tda18271_rf_tracking_filters_init(struct dvb_frontend *fe, u32 freq)
 500 {
 501         struct tda18271_priv *priv = fe->tuner_priv;
 502         struct tda18271_rf_tracking_filter_cal *map = priv->rf_cal_state;
 503         unsigned char *regs = priv->tda18271_regs;
 504         int bcal, rf, i;
 505 #define RF1 0
 506 #define RF2 1
 507 #define RF3 2
 508         u32 rf_default[3];
 509         u32 rf_freq[3];
 510         u8 prog_cal[3];
 511         u8 prog_tab[3];
 512
 513         i = tda18271_lookup_rf_band(fe, &freq, NULL);
 514
 515         if (i < 0)
 516                 return i;
 517
 518         rf_default[RF1] = 1000 * map[i].rf1_def;
 519         rf_default[RF2] = 1000 * map[i].rf2_def;
 520         rf_default[RF3] = 1000 * map[i].rf3_def;
 521
 522         for (rf = RF1; rf <= RF3; rf++) {
 523                 if (0 == rf_default[rf])
 524                         return 0;
 525                 tda_cal("freq = %d, rf = %d\n", freq, rf);
 526
 527                 /* look for optimized calibration frequency */
 528                 bcal = tda18271_powerscan(fe, &rf_default[rf], &rf_freq[rf]);
 529
 530                 tda18271_calc_rf_cal(fe, &rf_freq[rf]);
 531                 prog_tab[rf] = regs[R_EB14];
 532
 533                 if (1 == bcal)
 534                         prog_cal[rf] = tda18271_calibrate_rf(fe, rf_freq[rf]);
 535                 else
 536                         prog_cal[rf] = prog_tab[rf];
 537
 538                 switch (rf) {
 539                 case RF1:
 540                         map[i].rf_a1 = 0;
 541                         map[i].rf_b1 = prog_cal[RF1] - prog_tab[RF1];
 542                         map[i].rf1   = rf_freq[RF1] / 1000;
 543                         break;
 544                 case RF2:
 545                         map[i].rf_a1 = (prog_cal[RF2] - prog_tab[RF2] -
 546                                         prog_cal[RF1] + prog_tab[RF1]) /
 547                                 ((rf_freq[RF2] - rf_freq[RF1]) / 1000);
 548                         map[i].rf2   = rf_freq[RF2] / 1000;
 549                         break;
 550                 case RF3:
 551                         map[i].rf_a2 = (prog_cal[RF3] - prog_tab[RF3] -
 552                                         prog_cal[RF2] + prog_tab[RF2]) /
 553                                 ((rf_freq[RF3] - rf_freq[RF2]) / 1000);
 554                         map[i].rf_b2 = prog_cal[RF2] - prog_tab[RF2];
 555                         map[i].rf3   = rf_freq[RF3] / 1000;
 556                         break;
 557                 default:
 558                         BUG();
 559                 }
 560         }
 561
 562         return 0;
 563 }
 564
 565 static int tda18271_calc_rf_filter_curve(struct dvb_frontend *fe)
 566 {
 567         struct tda18271_priv *priv = fe->tuner_priv;
 568         unsigned int i;
 569
 570         tda_info("tda18271: performing RF tracking filter calibration\n");
 571
 572         /* wait for die temperature stabilization */
 573         msleep(200);
 574
 575         tda18271_powerscan_init(fe);
 576
 577         /* rf band calibration */
 578         for (i = 0; priv->rf_cal_state[i].rfmax != 0; i++)
 579                 tda18271_rf_tracking_filters_init(fe, 1000 *
 580                                                   priv->rf_cal_state[i].rfmax);
 581
 582         priv->tm_rfcal = tda18271_read_thermometer(fe);
 583
 584         return 0;
 585 }
 586
 587 /* ------------------------------------------------------------------ */
 588
 589 static int tda18271_rf_cal_init(struct dvb_frontend *fe)
 590 {
 591         struct tda18271_priv *priv = fe->tuner_priv;
 592
 593         if (priv->cal_initialized)
 594                 return 0;
 595
 596         tda18271_calc_rf_filter_curve(fe);
 597
 598         tda18271_por(fe);
 599
 600         tda_info("tda18271: RF tracking filter calibration complete\n");
 601
 602         priv->cal_initialized = true;
 603
 604         return 0;
 605 }
 606
 607 static int tda18271_init(struct dvb_frontend *fe)
 608 {
 609         struct tda18271_priv *priv = fe->tuner_priv;
 610
 611         mutex_lock(&priv->lock);
 612
 613         /* initialization */
 614         tda18271_ir_cal_init(fe);
 615
 616         if (priv->id == TDA18271HDC2)
 617                 tda18271_rf_cal_init(fe);
 618
 619         mutex_unlock(&priv->lock);
 620
 621         return 0;
 622 }
 623
 624 static int tda18271c2_tune(struct dvb_frontend *fe,
 625                            u32 ifc, u32 freq, u32 bw, u8 std, int radio)
 626 {
 627         struct tda18271_priv *priv = fe->tuner_priv;
 628
 629         tda_dbg("freq = %d, ifc = %d\n", freq, ifc);
 630
 631         tda18271_init(fe);
 632
 633         mutex_lock(&priv->lock);
 634
 635         tda18271_rf_tracking_filters_correction(fe, freq);
 636
 637         tda18271_channel_configuration(fe, ifc, freq, bw, std, radio);
 638
 639         mutex_unlock(&priv->lock);
 640
 641         return 0;
 642 }
 643
 644 /* ------------------------------------------------------------------ */
 645
 646 static int tda18271c1_tune(struct dvb_frontend *fe,
 647                            u32 ifc, u32 freq, u32 bw, u8 std, int radio)
 648 {
 649         struct tda18271_priv *priv = fe->tuner_priv;
 650         unsigned char *regs = priv->tda18271_regs;
 651         u32 N = 0;
 652
 653         tda18271_init(fe);
 654
 655         mutex_lock(&priv->lock);
 656
 657         tda_dbg("freq = %d, ifc = %d\n", freq, ifc);
 658
 659         /* RF tracking filter calibration */
 660
 661         /* calculate bp filter */
 662         tda18271_calc_bp_filter(fe, &freq);
 663         tda18271_write_regs(fe, R_EP1, 1);
 664
 665         regs[R_EB4]  &= 0x07;
 666         regs[R_EB4]  |= 0x60;
 667         tda18271_write_regs(fe, R_EB4, 1);
 668
 669         regs[R_EB7]   = 0x60;
 670         tda18271_write_regs(fe, R_EB7, 1);
 671
 672         regs[R_EB14]  = 0x00;
 673         tda18271_write_regs(fe, R_EB14, 1);
 674
 675         regs[R_EB20]  = 0xcc;
 676         tda18271_write_regs(fe, R_EB20, 1);
 677
 678         /* set cal mode to RF tracking filter calibration */
 679         regs[R_EP4]  |= 0x03;
 680
 681         /* calculate cal pll */
 682
 683         switch (priv->mode) {
 684         case TDA18271_ANALOG:
 685                 N = freq - 1250000;
 686                 break;
 687         case TDA18271_DIGITAL:
 688                 N = freq + bw / 2;
 689                 break;
 690         }
 691
 692         tda18271_calc_cal_pll(fe, N);
 693
 694         /* calculate main pll */
 695
 696         switch (priv->mode) {
 697         case TDA18271_ANALOG:
 698                 N = freq - 250000;
 699                 break;
 700         case TDA18271_DIGITAL:
 701                 N = freq + bw / 2 + 1000000;
 702                 break;
 703         }
 704
 705         tda18271_calc_main_pll(fe, N);
 706
 707         tda18271_write_regs(fe, R_EP3, 11);
 708         msleep(5); /* RF tracking filter calibration initialization */
 709
 710         /* search for K,M,CO for RF calibration */
 711         tda18271_calc_km(fe, &freq);
 712         tda18271_write_regs(fe, R_EB13, 1);
 713
 714         /* search for rf band */
 715         tda18271_calc_rf_band(fe, &freq);
 716
 717         /* search for gain taper */
 718         tda18271_calc_gain_taper(fe, &freq);
 719
 720         tda18271_write_regs(fe, R_EP2, 1);
 721         tda18271_write_regs(fe, R_EP1, 1);
 722         tda18271_write_regs(fe, R_EP2, 1);
 723         tda18271_write_regs(fe, R_EP1, 1);
 724
 725         regs[R_EB4]  &= 0x07;
 726         regs[R_EB4]  |= 0x40;
 727         tda18271_write_regs(fe, R_EB4, 1);
 728
 729         regs[R_EB7]   = 0x40;
 730         tda18271_write_regs(fe, R_EB7, 1);
 731         msleep(10);
 732
 733         regs[R_EB20]  = 0xec;
 734         tda18271_write_regs(fe, R_EB20, 1);
 735         msleep(60); /* RF tracking filter calibration completion */
 736
 737         regs[R_EP4]  &= ~0x03; /* set cal mode to normal */
 738         tda18271_write_regs(fe, R_EP4, 1);
 739
 740         tda18271_write_regs(fe, R_EP1, 1);
 741
 742         /* RF tracking filter correction for VHF_Low band */
 743         if (0 == tda18271_calc_rf_cal(fe, &freq))
 744                 tda18271_write_regs(fe, R_EB14, 1);
 745
 746         /* Channel Configuration */
 747
 748         switch (priv->mode) {
 749         case TDA18271_ANALOG:
 750                 regs[R_EB22]  = 0x2c;
 751                 break;
 752         case TDA18271_DIGITAL:
 753                 regs[R_EB22]  = 0x37;
 754                 break;
 755         }
 756         tda18271_write_regs(fe, R_EB22, 1);
 757
 758         regs[R_EP1]  |= 0x40; /* set dis power level on */
 759
 760         /* set standard */
 761         regs[R_EP3]  &= ~0x1f; /* clear std bits */
 762
 763         /* see table 22 */
 764         regs[R_EP3]  |= std;
 765
 766         regs[R_EP4]  &= ~0x03; /* set cal mode to normal */
 767
 768         regs[R_EP4]  &= ~0x1c; /* clear if level bits */
 769         switch (priv->mode) {
 770         case TDA18271_ANALOG:
 771                 regs[R_MPD]  &= ~0x80; /* IF notch = 0 */
 772                 break;
 773         case TDA18271_DIGITAL:
 774                 regs[R_EP4]  |= 0x04;
 775                 regs[R_MPD]  |= 0x80;
 776                 break;
 777         }
 778
 779         if (radio)
 780                 regs[R_EP4]  |=  0x80;
 781         else
 782                 regs[R_EP4]  &= ~0x80;
 783
 784         /* image rejection validity */
 785         tda18271_calc_ir_measure(fe, &freq);
 786
 787         /* calculate MAIN PLL */
 788         N = freq + ifc;
 789
 790         tda18271_calc_main_pll(fe, N);
 791
 792         tda18271_write_regs(fe, R_TM, 15);
 793         msleep(5);
 794         mutex_unlock(&priv->lock);
 795
 796         return 0;
 797 }
 798
 799 static inline int tda18271_tune(struct dvb_frontend *fe,
 800                                 u32 ifc, u32 freq, u32 bw, u8 std, int radio)
 801 {
 802         struct tda18271_priv *priv = fe->tuner_priv;
 803         int ret = -EINVAL;
 804
 805         switch (priv->id) {
 806         case TDA18271HDC1:
 807                 ret = tda18271c1_tune(fe, ifc, freq, bw, std, radio);
 808                 break;
 809         case TDA18271HDC2:
 810                 ret = tda18271c2_tune(fe, ifc, freq, bw, std, radio);
 811                 break;
 812         }
 813         return ret;
 814 }
 815
 816 /* ------------------------------------------------------------------ */
 817
 818 static int tda18271_set_params(struct dvb_frontend *fe,
 819                                struct dvb_frontend_parameters *params)
 820 {
 821         struct tda18271_priv *priv = fe->tuner_priv;
 822         struct tda18271_std_map *std_map = &priv->std;
 823         int ret;
 824         u8 std;
 825         u16 sgIF;
 826         u32 bw, freq = params->frequency;
 827
 828         priv->mode = TDA18271_DIGITAL;
 829
 830         /* see table 22 */
 831         if (fe->ops.info.type == FE_ATSC) {
 832                 switch (params->u.vsb.modulation) {
 833                 case VSB_8:
 834                 case VSB_16:
 835                         std  = std_map->atsc_6.std_bits;
 836                         sgIF = std_map->atsc_6.if_freq;
 837                         break;
 838                 case QAM_64:
 839                 case QAM_256:
 840                         std  = std_map->qam_6.std_bits;
 841                         sgIF = std_map->qam_6.if_freq;
 842                         break;
 843                 default:
 844                         tda_warn("modulation not set!\n");
 845                         return -EINVAL;
 846                 }
 847 #if 0
 848                 /* userspace request is already center adjusted */
 849                 freq += 1750000; /* Adjust to center (+1.75MHZ) */
 850 #endif
 851                 bw = 6000000;
 852         } else if (fe->ops.info.type == FE_OFDM) {
 853                 switch (params->u.ofdm.bandwidth) {
 854                 case BANDWIDTH_6_MHZ:
 855                         bw = 6000000;
 856                         std  = std_map->dvbt_6.std_bits;
 857                         sgIF = std_map->dvbt_6.if_freq;
 858                         break;
 859                 case BANDWIDTH_7_MHZ:
 860                         bw = 7000000;
 861                         std  = std_map->dvbt_7.std_bits;
 862                         sgIF = std_map->dvbt_7.if_freq;
 863                         break;
 864                 case BANDWIDTH_8_MHZ:
 865                         bw = 8000000;
 866                         std  = std_map->dvbt_8.std_bits;
 867                         sgIF = std_map->dvbt_8.if_freq;
 868                         break;
 869                 default:
 870                         tda_warn("bandwidth not set!\n");
 871                         return -EINVAL;
 872                 }
 873         } else {
 874                 tda_warn("modulation type not supported!\n");
 875                 return -EINVAL;
 876         }
 877
 878         ret = tda18271_tune(fe, sgIF * 1000, freq, bw, std, 0);
 879
 880         if (ret < 0)
 881                 goto fail;
 882
 883         priv->frequency = freq;
 884         priv->bandwidth = (fe->ops.info.type == FE_OFDM) ?
 885                 params->u.ofdm.bandwidth : 0;
 886 fail:
 887         return ret;
 888 }
 889
 890 static int tda18271_set_analog_params(struct dvb_frontend *fe,
 891                                       struct analog_parameters *params)
 892 {
 893         struct tda18271_priv *priv = fe->tuner_priv;
 894         struct tda18271_std_map *std_map = &priv->std;
 895         char *mode;
 896         int ret, radio = 0;
 897         u8 std;
 898         u16 sgIF;
 899         u32 freq = params->frequency * 62500;
 900
 901         priv->mode = TDA18271_ANALOG;
 902
 903         if (params->mode == V4L2_TUNER_RADIO) {
 904                 radio = 1;
 905                 freq = freq / 1000;
 906                 std  = std_map->fm_radio.std_bits;
 907                 sgIF = std_map->fm_radio.if_freq;
 908                 mode = "fm";
 909         } else if (params->std & V4L2_STD_MN) {
 910                 std  = std_map->atv_mn.std_bits;
 911                 sgIF = std_map->atv_mn.if_freq;
 912                 mode = "MN";
 913         } else if (params->std & V4L2_STD_B) {
 914                 std  = std_map->atv_b.std_bits;
 915                 sgIF = std_map->atv_b.if_freq;
 916                 mode = "B";
 917         } else if (params->std & V4L2_STD_GH) {
 918                 std  = std_map->atv_gh.std_bits;
 919                 sgIF = std_map->atv_gh.if_freq;
 920                 mode = "GH";
 921         } else if (params->std & V4L2_STD_PAL_I) {
 922                 std  = std_map->atv_i.std_bits;
 923                 sgIF = std_map->atv_i.if_freq;
 924                 mode = "I";
 925         } else if (params->std & V4L2_STD_DK) {
 926                 std  = std_map->atv_dk.std_bits;
 927                 sgIF = std_map->atv_dk.if_freq;
 928                 mode = "DK";
 929         } else if (params->std & V4L2_STD_SECAM_L) {
 930                 std  = std_map->atv_l.std_bits;
 931                 sgIF = std_map->atv_l.if_freq;
 932                 mode = "L";
 933         } else if (params->std & V4L2_STD_SECAM_LC) {
 934                 std  = std_map->atv_lc.std_bits;
 935                 sgIF = std_map->atv_lc.if_freq;
 936                 mode = "L'";
 937         } else {
 938                 std  = std_map->atv_i.std_bits;
 939                 sgIF = std_map->atv_i.if_freq;
 940                 mode = "xx";
 941         }
 942
 943         tda_dbg("setting tda18271 to system %s\n", mode);
 944
 945         ret = tda18271_tune(fe, sgIF * 1000, freq, 0, std, radio);
 946
 947         if (ret < 0)
 948                 goto fail;
 949
 950         priv->frequency = freq;
 951         priv->bandwidth = 0;
 952 fail:
 953         return ret;
 954 }
 955
 956 static int tda18271_release(struct dvb_frontend *fe)
 957 {
 958         struct tda18271_priv *priv = fe->tuner_priv;
 959
 960         mutex_lock(&tda18271_list_mutex);
 961
 962         priv->count--;
 963
 964         if (!priv->count) {
 965                 tda_dbg("destroying instance @ %d-%04x\n",
 966                         i2c_adapter_id(priv->i2c_adap),
 967                         priv->i2c_addr);
 968                 list_del(&priv->tda18271_list);
 969
 970                 kfree(priv);
 971         }
 972         mutex_unlock(&tda18271_list_mutex);
 973
 974         fe->tuner_priv = NULL;
 975
 976         return 0;
 977 }
 978
 979 static int tda18271_get_frequency(struct dvb_frontend *fe, u32 *frequency)
 980 {
 981         struct tda18271_priv *priv = fe->tuner_priv;
 982         *frequency = priv->frequency;
 983         return 0;
 984 }
 985
 986 static int tda18271_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
 987 {
 988         struct tda18271_priv *priv = fe->tuner_priv;
 989         *bandwidth = priv->bandwidth;
 990         return 0;
 991 }
 992
 993 /* ------------------------------------------------------------------ */
 994
 995 #define tda18271_update_std(std_cfg, name) do {                         \
 996         if (map->std_cfg.if_freq + map->std_cfg.std_bits > 0) {         \
 997                 tda_dbg("Using custom std config for %s\n", name);      \
 998                 memcpy(&std->std_cfg, &map->std_cfg,                    \
 999                         sizeof(struct tda18271_std_map_item));          \
1000         } } while (0)
1001
1002 #define tda18271_dump_std_item(std_cfg, name) do {                      \
1003         tda_dbg("(%s) if freq = %d, std bits = 0x%02x\n",               \
1004                 name, std->std_cfg.if_freq, std->std_cfg.std_bits);     \
1005         } while (0)
1006
1007 static int tda18271_dump_std_map(struct dvb_frontend *fe)
1008 {
1009         struct tda18271_priv *priv = fe->tuner_priv;
1010         struct tda18271_std_map *std = &priv->std;
1011
1012         tda_dbg("========== STANDARD MAP SETTINGS ==========\n");
1013         tda18271_dump_std_item(fm_radio, "fm");
1014         tda18271_dump_std_item(atv_b,  "pal b");
1015         tda18271_dump_std_item(atv_dk, "pal dk");
1016         tda18271_dump_std_item(atv_gh, "pal gh");
1017         tda18271_dump_std_item(atv_i,  "pal i");
1018         tda18271_dump_std_item(atv_l,  "pal l");
1019         tda18271_dump_std_item(atv_lc, "pal l'");
1020         tda18271_dump_std_item(atv_mn, "atv mn");
1021         tda18271_dump_std_item(atsc_6, "atsc 6");
1022         tda18271_dump_std_item(dvbt_6, "dvbt 6");
1023         tda18271_dump_std_item(dvbt_7, "dvbt 7");
1024         tda18271_dump_std_item(dvbt_8, "dvbt 8");
1025         tda18271_dump_std_item(qam_6,  "qam 6");
1026         tda18271_dump_std_item(qam_8,  "qam 8");
1027
1028         return 0;
1029 }
1030
1031 static int tda18271_update_std_map(struct dvb_frontend *fe,
1032                                    struct tda18271_std_map *map)
1033 {
1034         struct tda18271_priv *priv = fe->tuner_priv;
1035         struct tda18271_std_map *std = &priv->std;
1036
1037         if (!map)
1038                 return -EINVAL;
1039
1040         tda18271_update_std(fm_radio, "fm");
1041         tda18271_update_std(atv_b,  "atv b");
1042         tda18271_update_std(atv_dk, "atv dk");
1043         tda18271_update_std(atv_gh, "atv gh");
1044         tda18271_update_std(atv_i,  "atv i");
1045         tda18271_update_std(atv_l,  "atv l");
1046         tda18271_update_std(atv_lc, "atv l'");
1047         tda18271_update_std(atv_mn, "atv mn");
1048         tda18271_update_std(atsc_6, "atsc 6");
1049         tda18271_update_std(dvbt_6, "dvbt 6");
1050         tda18271_update_std(dvbt_7, "dvbt 7");
1051         tda18271_update_std(dvbt_8, "dvbt 8");
1052         tda18271_update_std(qam_6,  "qam 6");
1053         tda18271_update_std(qam_8,  "qam 8");
1054
1055         return 0;
1056 }
1057
1058 static int tda18271_get_id(struct dvb_frontend *fe)
1059 {
1060         struct tda18271_priv *priv = fe->tuner_priv;
1061         unsigned char *regs = priv->tda18271_regs;
1062         char *name;
1063         int ret = 0;
1064
1065         mutex_lock(&priv->lock);
1066         tda18271_read_regs(fe);
1067         mutex_unlock(&priv->lock);
1068
1069         switch (regs[R_ID] & 0x7f) {
1070         case 3:
1071                 name = "TDA18271HD/C1";
1072                 priv->id = TDA18271HDC1;
1073                 break;
1074         case 4:
1075                 name = "TDA18271HD/C2";
1076                 priv->id = TDA18271HDC2;
1077                 break;
1078         default:
1079                 name = "Unknown device";
1080                 ret = -EINVAL;
1081                 break;
1082         }
1083
1084         tda_info("%s detected @ %d-%04x%s\n", name,
1085                  i2c_adapter_id(priv->i2c_adap), priv->i2c_addr,
1086                  (0 == ret) ? "" : ", device not supported.");
1087
1088         return ret;
1089 }
1090
1091 static struct dvb_tuner_ops tda18271_tuner_ops = {
1092         .info = {
1093                 .name = "NXP TDA18271HD",
1094                 .frequency_min  =  45000000,
1095                 .frequency_max  = 864000000,
1096                 .frequency_step =     62500
1097         },
1098         .init              = tda18271_init,
1099         .set_params        = tda18271_set_params,
1100         .set_analog_params = tda18271_set_analog_params,
1101         .release           = tda18271_release,
1102         .get_frequency     = tda18271_get_frequency,
1103         .get_bandwidth     = tda18271_get_bandwidth,
1104 };
1105
1106 struct dvb_frontend *tda18271_attach(struct dvb_frontend *fe, u8 addr,
1107                                      struct i2c_adapter *i2c,
1108                                      struct tda18271_config *cfg)
1109 {
1110         struct tda18271_priv *priv = NULL;
1111         int state_found = 0;
1112
1113         mutex_lock(&tda18271_list_mutex);
1114
1115         list_for_each_entry(priv, &tda18271_list, tda18271_list) {
1116                 if ((i2c_adapter_id(priv->i2c_adap) == i2c_adapter_id(i2c)) &&
1117                     (priv->i2c_addr == addr)) {
1118                         tda_dbg("attaching existing tuner @ %d-%04x\n",
1119                                 i2c_adapter_id(priv->i2c_adap),
1120                                 priv->i2c_addr);
1121                         priv->count++;
1122                         fe->tuner_priv = priv;
1123                         state_found = 1;
1124                         /* allow dvb driver to override i2c gate setting */
1125                         if ((cfg) && (cfg->gate != TDA18271_GATE_ANALOG))
1126                                 priv->gate = cfg->gate;
1127                         break;
1128                 }
1129         }
1130         if (state_found == 0) {
1131                 tda_dbg("creating new tuner instance @ %d-%04x\n",
1132                         i2c_adapter_id(i2c), addr);
1133
1134                 priv = kzalloc(sizeof(struct tda18271_priv), GFP_KERNEL);
1135                 if (priv == NULL) {
1136                         mutex_unlock(&tda18271_list_mutex);
1137                         return NULL;
1138                 }
1139
1140                 priv->i2c_addr = addr;
1141                 priv->i2c_adap = i2c;
1142                 priv->gate = (cfg) ? cfg->gate : TDA18271_GATE_AUTO;
1143                 priv->cal_initialized = false;
1144                 mutex_init(&priv->lock);
1145                 priv->count++;
1146
1147                 fe->tuner_priv = priv;
1148
1149                 list_add_tail(&priv->tda18271_list, &tda18271_list);
1150
1151                 if (tda18271_get_id(fe) < 0)
1152                         goto fail;
1153
1154                 if (tda18271_assign_map_layout(fe) < 0)
1155                         goto fail;
1156
1157                 mutex_lock(&priv->lock);
1158                 tda18271_init_regs(fe);
1159                 mutex_unlock(&priv->lock);
1160         }
1161
1162         /* override default std map with values in config struct */
1163         if ((cfg) && (cfg->std_map))
1164                 tda18271_update_std_map(fe, cfg->std_map);
1165
1166         mutex_unlock(&tda18271_list_mutex);
1167
1168         memcpy(&fe->ops.tuner_ops, &tda18271_tuner_ops,
1169                sizeof(struct dvb_tuner_ops));
1170
1171         if (tda18271_debug & DBG_MAP)
1172                 tda18271_dump_std_map(fe);
1173
1174         return fe;
1175 fail:
1176         mutex_unlock(&tda18271_list_mutex);
1177
1178         tda18271_release(fe);
1179         return NULL;
1180 }
1181 EXPORT_SYMBOL_GPL(tda18271_attach);
1182 MODULE_DESCRIPTION("NXP TDA18271HD analog / digital tuner driver");
1183 MODULE_AUTHOR("Michael Krufky <mkrufky@linuxtv.org>");
1184 MODULE_LICENSE("GPL");
1185 MODULE_VERSION("0.2");
1186
1187 /*
1188  * Overrides for Emacs so that we follow Linus's tabbing style.
1189  * ---------------------------------------------------------------------------
1190  * Local variables:
1191  * c-basic-offset: 8
1192  * End:
1193  */