drivers/media/dvb/frontends/dib3000mb.c

   1 /*
   2  * Frontend driver for mobile DVB-T demodulator DiBcom 3000M-B
   3  * DiBcom (http://www.dibcom.fr/)
   4  *
   5  * Copyright (C) 2004-5 Patrick Boettcher (patrick.boettcher@desy.de)
   6  *
   7  * based on GPL code from DibCom, which has
   8  *
   9  * Copyright (C) 2004 Amaury Demol for DiBcom (ademol@dibcom.fr)
  10  *
  11  *      This program is free software; you can redistribute it and/or
  12  *      modify it under the terms of the GNU General Public License as
  13  *      published by the Free Software Foundation, version 2.
  14  *
  15  * Acknowledgements
  16  *
  17  *  Amaury Demol (ademol@dibcom.fr) from DiBcom for providing specs and driver
  18  *  sources, on which this driver (and the dvb-dibusb) are based.
  19  *
  20  * see Documentation/dvb/README.dibusb for more information
  21  *
  22  */
  23
  24 #include <linux/config.h>
  25 #include <linux/kernel.h>
  26 #include <linux/version.h>
  27 #include <linux/module.h>
  28 #include <linux/moduleparam.h>
  29 #include <linux/init.h>
  30 #include <linux/delay.h>
  31
  32 #include "dib3000-common.h"
  33 #include "dib3000mb_priv.h"
  34 #include "dib3000.h"
  35
  36 /* Version information */
  37 #define DRIVER_VERSION "0.1"
  38 #define DRIVER_DESC "DiBcom 3000M-B DVB-T demodulator"
  39 #define DRIVER_AUTHOR "Patrick Boettcher, patrick.boettcher@desy.de"
  40
  41 #ifdef CONFIG_DVB_DIBCOM_DEBUG
  42 static int debug;
  43 module_param(debug, int, 0644);
  44 MODULE_PARM_DESC(debug, "set debugging level (1=info,2=xfer,4=setfe,8=getfe (|-able)).");
  45 #endif
  46 #define deb_info(args...) dprintk(0x01,args)
  47 #define deb_xfer(args...) dprintk(0x02,args)
  48 #define deb_setf(args...) dprintk(0x04,args)
  49 #define deb_getf(args...) dprintk(0x08,args)
  50
  51 static int dib3000mb_get_frontend(struct dvb_frontend* fe,
  52                                   struct dvb_frontend_parameters *fep);
  53
  54 static int dib3000mb_set_frontend(struct dvb_frontend* fe,
  55                                   struct dvb_frontend_parameters *fep, int tuner)
  56 {
  57         struct dib3000_state* state = fe->demodulator_priv;
  58         struct dvb_ofdm_parameters *ofdm = &fep->u.ofdm;
  59         fe_code_rate_t fe_cr = FEC_NONE;
  60         int search_state, seq;
  61
  62         if (tuner && state->config.pll_set) {
  63                 state->config.pll_set(fe, fep);
  64
  65                 deb_setf("bandwidth: ");
  66                 switch (ofdm->bandwidth) {
  67                         case BANDWIDTH_8_MHZ:
  68                                 deb_setf("8 MHz\n");
  69                                 wr_foreach(dib3000mb_reg_timing_freq, dib3000mb_timing_freq[2]);
  70                                 wr_foreach(dib3000mb_reg_bandwidth, dib3000mb_bandwidth_8mhz);
  71                                 break;
  72                         case BANDWIDTH_7_MHZ:
  73                                 deb_setf("7 MHz\n");
  74                                 wr_foreach(dib3000mb_reg_timing_freq, dib3000mb_timing_freq[1]);
  75                                 wr_foreach(dib3000mb_reg_bandwidth, dib3000mb_bandwidth_7mhz);
  76                                 break;
  77                         case BANDWIDTH_6_MHZ:
  78                                 deb_setf("6 MHz\n");
  79                                 wr_foreach(dib3000mb_reg_timing_freq, dib3000mb_timing_freq[0]);
  80                                 wr_foreach(dib3000mb_reg_bandwidth, dib3000mb_bandwidth_6mhz);
  81                                 break;
  82                         case BANDWIDTH_AUTO:
  83                                 return -EOPNOTSUPP;
  84                         default:
  85                                 err("unkown bandwidth value.");
  86                                 return -EINVAL;
  87                 }
  88         }
  89         wr(DIB3000MB_REG_LOCK1_MASK, DIB3000MB_LOCK1_SEARCH_4);
  90
  91         deb_setf("transmission mode: ");
  92         switch (ofdm->transmission_mode) {
  93                 case TRANSMISSION_MODE_2K:
  94                         deb_setf("2k\n");
  95                         wr(DIB3000MB_REG_FFT, DIB3000_TRANSMISSION_MODE_2K);
  96                         break;
  97                 case TRANSMISSION_MODE_8K:
  98                         deb_setf("8k\n");
  99                         wr(DIB3000MB_REG_FFT, DIB3000_TRANSMISSION_MODE_8K);
 100                         break;
 101                 case TRANSMISSION_MODE_AUTO:
 102                         deb_setf("auto\n");
 103                         break;
 104                 default:
 105                         return -EINVAL;
 106         }
 107
 108         deb_setf("guard: ");
 109         switch (ofdm->guard_interval) {
 110                 case GUARD_INTERVAL_1_32:
 111                         deb_setf("1_32\n");
 112                         wr(DIB3000MB_REG_GUARD_TIME, DIB3000_GUARD_TIME_1_32);
 113                         break;
 114                 case GUARD_INTERVAL_1_16:
 115                         deb_setf("1_16\n");
 116                         wr(DIB3000MB_REG_GUARD_TIME, DIB3000_GUARD_TIME_1_16);
 117                         break;
 118                 case GUARD_INTERVAL_1_8:
 119                         deb_setf("1_8\n");
 120                         wr(DIB3000MB_REG_GUARD_TIME, DIB3000_GUARD_TIME_1_8);
 121                         break;
 122                 case GUARD_INTERVAL_1_4:
 123                         deb_setf("1_4\n");
 124                         wr(DIB3000MB_REG_GUARD_TIME, DIB3000_GUARD_TIME_1_4);
 125                         break;
 126                 case GUARD_INTERVAL_AUTO:
 127                         deb_setf("auto\n");
 128                         break;
 129                 default:
 130                         return -EINVAL;
 131         }
 132
 133         deb_setf("inversion: ");
 134         switch (fep->inversion) {
 135                 case INVERSION_OFF:
 136                         deb_setf("off\n");
 137                         wr(DIB3000MB_REG_DDS_INV, DIB3000_DDS_INVERSION_OFF);
 138                         break;
 139                 case INVERSION_AUTO:
 140                         deb_setf("auto ");
 141                         break;
 142                 case INVERSION_ON:
 143                         deb_setf("on\n");
 144                         wr(DIB3000MB_REG_DDS_INV, DIB3000_DDS_INVERSION_ON);
 145                         break;
 146                 default:
 147                         return -EINVAL;
 148         }
 149
 150         deb_setf("constellation: ");
 151         switch (ofdm->constellation) {
 152                 case QPSK:
 153                         deb_setf("qpsk\n");
 154                         wr(DIB3000MB_REG_QAM, DIB3000_CONSTELLATION_QPSK);
 155                         break;
 156                 case QAM_16:
 157                         deb_setf("qam16\n");
 158                         wr(DIB3000MB_REG_QAM, DIB3000_CONSTELLATION_16QAM);
 159                         break;
 160                 case QAM_64:
 161                         deb_setf("qam64\n");
 162                         wr(DIB3000MB_REG_QAM, DIB3000_CONSTELLATION_64QAM);
 163                         break;
 164                 case QAM_AUTO:
 165                         break;
 166                 default:
 167                         return -EINVAL;
 168         }
 169         deb_setf("hierachy: ");
 170         switch (ofdm->hierarchy_information) {
 171                 case HIERARCHY_NONE:
 172                         deb_setf("none ");
 173                         /* fall through */
 174                 case HIERARCHY_1:
 175                         deb_setf("alpha=1\n");
 176                         wr(DIB3000MB_REG_VIT_ALPHA, DIB3000_ALPHA_1);
 177                         break;
 178                 case HIERARCHY_2:
 179                         deb_setf("alpha=2\n");
 180                         wr(DIB3000MB_REG_VIT_ALPHA, DIB3000_ALPHA_2);
 181                         break;
 182                 case HIERARCHY_4:
 183                         deb_setf("alpha=4\n");
 184                         wr(DIB3000MB_REG_VIT_ALPHA, DIB3000_ALPHA_4);
 185                         break;
 186                 case HIERARCHY_AUTO:
 187                         deb_setf("alpha=auto\n");
 188                         break;
 189                 default:
 190                         return -EINVAL;
 191         }
 192
 193         deb_setf("hierarchy: ");
 194         if (ofdm->hierarchy_information == HIERARCHY_NONE) {
 195                 deb_setf("none\n");
 196                 wr(DIB3000MB_REG_VIT_HRCH, DIB3000_HRCH_OFF);
 197                 wr(DIB3000MB_REG_VIT_HP, DIB3000_SELECT_HP);
 198                 fe_cr = ofdm->code_rate_HP;
 199         } else if (ofdm->hierarchy_information != HIERARCHY_AUTO) {
 200                 deb_setf("on\n");
 201                 wr(DIB3000MB_REG_VIT_HRCH, DIB3000_HRCH_ON);
 202                 wr(DIB3000MB_REG_VIT_HP, DIB3000_SELECT_LP);
 203                 fe_cr = ofdm->code_rate_LP;
 204         }
 205         deb_setf("fec: ");
 206         switch (fe_cr) {
 207                 case FEC_1_2:
 208                         deb_setf("1_2\n");
 209                         wr(DIB3000MB_REG_VIT_CODE_RATE, DIB3000_FEC_1_2);
 210                         break;
 211                 case FEC_2_3:
 212                         deb_setf("2_3\n");
 213                         wr(DIB3000MB_REG_VIT_CODE_RATE, DIB3000_FEC_2_3);
 214                         break;
 215                 case FEC_3_4:
 216                         deb_setf("3_4\n");
 217                         wr(DIB3000MB_REG_VIT_CODE_RATE, DIB3000_FEC_3_4);
 218                         break;
 219                 case FEC_5_6:
 220                         deb_setf("5_6\n");
 221                         wr(DIB3000MB_REG_VIT_CODE_RATE, DIB3000_FEC_5_6);
 222                         break;
 223                 case FEC_7_8:
 224                         deb_setf("7_8\n");
 225                         wr(DIB3000MB_REG_VIT_CODE_RATE, DIB3000_FEC_7_8);
 226                         break;
 227                 case FEC_NONE:
 228                         deb_setf("none ");
 229                         break;
 230                 case FEC_AUTO:
 231                         deb_setf("auto\n");
 232                         break;
 233                 default:
 234                         return -EINVAL;
 235         }
 236
 237         seq = dib3000_seq
 238                 [ofdm->transmission_mode == TRANSMISSION_MODE_AUTO]
 239                 [ofdm->guard_interval == GUARD_INTERVAL_AUTO]
 240                 [fep->inversion == INVERSION_AUTO];
 241
 242         deb_setf("seq? %d\n", seq);
 243
 244         wr(DIB3000MB_REG_SEQ, seq);
 245
 246         wr(DIB3000MB_REG_ISI, seq ? DIB3000MB_ISI_INHIBIT : DIB3000MB_ISI_ACTIVATE);
 247
 248         if (ofdm->transmission_mode == TRANSMISSION_MODE_2K) {
 249                 if (ofdm->guard_interval == GUARD_INTERVAL_1_8) {
 250                         wr(DIB3000MB_REG_SYNC_IMPROVEMENT, DIB3000MB_SYNC_IMPROVE_2K_1_8);
 251                 } else {
 252                         wr(DIB3000MB_REG_SYNC_IMPROVEMENT, DIB3000MB_SYNC_IMPROVE_DEFAULT);
 253                 }
 254
 255                 wr(DIB3000MB_REG_UNK_121, DIB3000MB_UNK_121_2K);
 256         } else {
 257                 wr(DIB3000MB_REG_UNK_121, DIB3000MB_UNK_121_DEFAULT);
 258         }
 259
 260         wr(DIB3000MB_REG_MOBILE_ALGO, DIB3000MB_MOBILE_ALGO_OFF);
 261         wr(DIB3000MB_REG_MOBILE_MODE_QAM, DIB3000MB_MOBILE_MODE_QAM_OFF);
 262         wr(DIB3000MB_REG_MOBILE_MODE, DIB3000MB_MOBILE_MODE_OFF);
 263
 264         wr_foreach(dib3000mb_reg_agc_bandwidth, dib3000mb_agc_bandwidth_high);
 265
 266         wr(DIB3000MB_REG_ISI, DIB3000MB_ISI_ACTIVATE);
 267
 268         wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_AGC + DIB3000MB_RESTART_CTRL);
 269         wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_OFF);
 270
 271         /* wait for AGC lock */
 272         msleep(70);
 273
 274         wr_foreach(dib3000mb_reg_agc_bandwidth, dib3000mb_agc_bandwidth_low);
 275
 276         /* something has to be auto searched */
 277         if (ofdm->constellation == QAM_AUTO ||
 278                 ofdm->hierarchy_information == HIERARCHY_AUTO ||
 279                 fe_cr == FEC_AUTO ||
 280                 fep->inversion == INVERSION_AUTO) {
 281                 int as_count=0;
 282
 283                 deb_setf("autosearch enabled.\n");
 284
 285                 wr(DIB3000MB_REG_ISI, DIB3000MB_ISI_INHIBIT);
 286
 287                 wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_AUTO_SEARCH);
 288                 wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_OFF);
 289
 290                 while ((search_state =
 291                                 dib3000_search_status(
 292                                         rd(DIB3000MB_REG_AS_IRQ_PENDING),
 293                                         rd(DIB3000MB_REG_LOCK2_VALUE))) < 0 && as_count++ < 100)
 294                         msleep(1);
 295
 296                 deb_setf("search_state after autosearch %d after %d checks\n",search_state,as_count);
 297
 298                 if (search_state == 1) {
 299                         struct dvb_frontend_parameters feps;
 300                         if (dib3000mb_get_frontend(fe, &feps) == 0) {
 301                                 deb_setf("reading tuning data from frontend succeeded.\n");
 302                                 return dib3000mb_set_frontend(fe, &feps, 0);
 303                         }
 304                 }
 305
 306         } else {
 307                 wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_CTRL);
 308                 wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_OFF);
 309         }
 310
 311         return 0;
 312 }
 313
 314 static int dib3000mb_fe_init(struct dvb_frontend* fe, int mobile_mode)
 315 {
 316         struct dib3000_state* state = fe->demodulator_priv;
 317
 318         deb_info("dib3000mb is getting up.\n");
 319         wr(DIB3000MB_REG_POWER_CONTROL, DIB3000MB_POWER_UP);
 320
 321         wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_AGC);
 322
 323         wr(DIB3000MB_REG_RESET_DEVICE, DIB3000MB_RESET_DEVICE);
 324         wr(DIB3000MB_REG_RESET_DEVICE, DIB3000MB_RESET_DEVICE_RST);
 325
 326         wr(DIB3000MB_REG_CLOCK, DIB3000MB_CLOCK_DEFAULT);
 327
 328         wr(DIB3000MB_REG_ELECT_OUT_MODE, DIB3000MB_ELECT_OUT_MODE_ON);
 329
 330         wr(DIB3000MB_REG_DDS_FREQ_MSB, DIB3000MB_DDS_FREQ_MSB);
 331         wr(DIB3000MB_REG_DDS_FREQ_LSB, DIB3000MB_DDS_FREQ_LSB);
 332
 333         wr_foreach(dib3000mb_reg_timing_freq, dib3000mb_timing_freq[2]);
 334
 335         wr_foreach(dib3000mb_reg_impulse_noise,
 336                         dib3000mb_impulse_noise_values[DIB3000MB_IMPNOISE_OFF]);
 337
 338         wr_foreach(dib3000mb_reg_agc_gain, dib3000mb_default_agc_gain);
 339
 340         wr(DIB3000MB_REG_PHASE_NOISE, DIB3000MB_PHASE_NOISE_DEFAULT);
 341
 342         wr_foreach(dib3000mb_reg_phase_noise, dib3000mb_default_noise_phase);
 343
 344         wr_foreach(dib3000mb_reg_lock_duration, dib3000mb_default_lock_duration);
 345
 346         wr_foreach(dib3000mb_reg_agc_bandwidth, dib3000mb_agc_bandwidth_low);
 347
 348         wr(DIB3000MB_REG_LOCK0_MASK, DIB3000MB_LOCK0_DEFAULT);
 349         wr(DIB3000MB_REG_LOCK1_MASK, DIB3000MB_LOCK1_SEARCH_4);
 350         wr(DIB3000MB_REG_LOCK2_MASK, DIB3000MB_LOCK2_DEFAULT);
 351         wr(DIB3000MB_REG_SEQ, dib3000_seq[1][1][1]);
 352
 353         wr_foreach(dib3000mb_reg_bandwidth, dib3000mb_bandwidth_8mhz);
 354
 355         wr(DIB3000MB_REG_UNK_68, DIB3000MB_UNK_68);
 356         wr(DIB3000MB_REG_UNK_69, DIB3000MB_UNK_69);
 357         wr(DIB3000MB_REG_UNK_71, DIB3000MB_UNK_71);
 358         wr(DIB3000MB_REG_UNK_77, DIB3000MB_UNK_77);
 359         wr(DIB3000MB_REG_UNK_78, DIB3000MB_UNK_78);
 360         wr(DIB3000MB_REG_ISI, DIB3000MB_ISI_INHIBIT);
 361         wr(DIB3000MB_REG_UNK_92, DIB3000MB_UNK_92);
 362         wr(DIB3000MB_REG_UNK_96, DIB3000MB_UNK_96);
 363         wr(DIB3000MB_REG_UNK_97, DIB3000MB_UNK_97);
 364         wr(DIB3000MB_REG_UNK_106, DIB3000MB_UNK_106);
 365         wr(DIB3000MB_REG_UNK_107, DIB3000MB_UNK_107);
 366         wr(DIB3000MB_REG_UNK_108, DIB3000MB_UNK_108);
 367         wr(DIB3000MB_REG_UNK_122, DIB3000MB_UNK_122);
 368         wr(DIB3000MB_REG_MOBILE_MODE_QAM, DIB3000MB_MOBILE_MODE_QAM_OFF);
 369         wr(DIB3000MB_REG_BERLEN, DIB3000MB_BERLEN_DEFAULT);
 370
 371         wr_foreach(dib3000mb_reg_filter_coeffs, dib3000mb_filter_coeffs);
 372
 373         wr(DIB3000MB_REG_MOBILE_ALGO, DIB3000MB_MOBILE_ALGO_ON);
 374         wr(DIB3000MB_REG_MULTI_DEMOD_MSB, DIB3000MB_MULTI_DEMOD_MSB);
 375         wr(DIB3000MB_REG_MULTI_DEMOD_LSB, DIB3000MB_MULTI_DEMOD_LSB);
 376
 377         wr(DIB3000MB_REG_OUTPUT_MODE, DIB3000MB_OUTPUT_MODE_SLAVE);
 378
 379         wr(DIB3000MB_REG_FIFO_142, DIB3000MB_FIFO_142);
 380         wr(DIB3000MB_REG_MPEG2_OUT_MODE, DIB3000MB_MPEG2_OUT_MODE_188);
 381         wr(DIB3000MB_REG_PID_PARSE, DIB3000MB_PID_PARSE_ACTIVATE);
 382         wr(DIB3000MB_REG_FIFO, DIB3000MB_FIFO_INHIBIT);
 383         wr(DIB3000MB_REG_FIFO_146, DIB3000MB_FIFO_146);
 384         wr(DIB3000MB_REG_FIFO_147, DIB3000MB_FIFO_147);
 385
 386         wr(DIB3000MB_REG_DATA_IN_DIVERSITY, DIB3000MB_DATA_DIVERSITY_IN_OFF);
 387
 388         if (state->config.pll_init)
 389                 state->config.pll_init(fe);
 390
 391         return 0;
 392 }
 393
 394 static int dib3000mb_get_frontend(struct dvb_frontend* fe,
 395                                   struct dvb_frontend_parameters *fep)
 396 {
 397         struct dib3000_state* state = fe->demodulator_priv;
 398         struct dvb_ofdm_parameters *ofdm = &fep->u.ofdm;
 399         fe_code_rate_t *cr;
 400         u16 tps_val;
 401         int inv_test1,inv_test2;
 402         u32 dds_val, threshold = 0x800000;
 403
 404         if (!rd(DIB3000MB_REG_TPS_LOCK))
 405                 return 0;
 406
 407         dds_val = ((rd(DIB3000MB_REG_DDS_VALUE_MSB) & 0xff) << 16) + rd(DIB3000MB_REG_DDS_VALUE_LSB);
 408         deb_getf("DDS_VAL: %x %x %x",dds_val, rd(DIB3000MB_REG_DDS_VALUE_MSB), rd(DIB3000MB_REG_DDS_VALUE_LSB));
 409         if (dds_val < threshold)
 410                 inv_test1 = 0;
 411         else if (dds_val == threshold)
 412                 inv_test1 = 1;
 413         else
 414                 inv_test1 = 2;
 415
 416         dds_val = ((rd(DIB3000MB_REG_DDS_FREQ_MSB) & 0xff) << 16) + rd(DIB3000MB_REG_DDS_FREQ_LSB);
 417         deb_getf("DDS_FREQ: %x %x %x",dds_val, rd(DIB3000MB_REG_DDS_FREQ_MSB), rd(DIB3000MB_REG_DDS_FREQ_LSB));
 418         if (dds_val < threshold)
 419                 inv_test2 = 0;
 420         else if (dds_val == threshold)
 421                 inv_test2 = 1;
 422         else
 423                 inv_test2 = 2;
 424
 425         fep->inversion =
 426                 ((inv_test2 == 2) && (inv_test1==1 || inv_test1==0)) ||
 427                 ((inv_test2 == 0) && (inv_test1==1 || inv_test1==2)) ?
 428                 INVERSION_ON : INVERSION_OFF;
 429
 430         deb_getf("inversion %d %d, %d\n", inv_test2, inv_test1, fep->inversion);
 431
 432         switch ((tps_val = rd(DIB3000MB_REG_TPS_QAM))) {
 433                 case DIB3000_CONSTELLATION_QPSK:
 434                         deb_getf("QPSK ");
 435                         ofdm->constellation = QPSK;
 436                         break;
 437                 case DIB3000_CONSTELLATION_16QAM:
 438                         deb_getf("QAM16 ");
 439                         ofdm->constellation = QAM_16;
 440                         break;
 441                 case DIB3000_CONSTELLATION_64QAM:
 442                         deb_getf("QAM64 ");
 443                         ofdm->constellation = QAM_64;
 444                         break;
 445                 default:
 446                         err("Unexpected constellation returned by TPS (%d)", tps_val);
 447                         break;
 448         }
 449         deb_getf("TPS: %d\n", tps_val);
 450
 451         if (rd(DIB3000MB_REG_TPS_HRCH)) {
 452                 deb_getf("HRCH ON\n");
 453                 cr = &ofdm->code_rate_LP;
 454                 ofdm->code_rate_HP = FEC_NONE;
 455                 switch ((tps_val = rd(DIB3000MB_REG_TPS_VIT_ALPHA))) {
 456                         case DIB3000_ALPHA_0:
 457                                 deb_getf("HIERARCHY_NONE ");
 458                                 ofdm->hierarchy_information = HIERARCHY_NONE;
 459                                 break;
 460                         case DIB3000_ALPHA_1:
 461                                 deb_getf("HIERARCHY_1 ");
 462                                 ofdm->hierarchy_information = HIERARCHY_1;
 463                                 break;
 464                         case DIB3000_ALPHA_2:
 465                                 deb_getf("HIERARCHY_2 ");
 466                                 ofdm->hierarchy_information = HIERARCHY_2;
 467                                 break;
 468                         case DIB3000_ALPHA_4:
 469                                 deb_getf("HIERARCHY_4 ");
 470                                 ofdm->hierarchy_information = HIERARCHY_4;
 471                                 break;
 472                         default:
 473                                 err("Unexpected ALPHA value returned by TPS (%d)", tps_val);
 474                                 break;
 475                 }
 476                 deb_getf("TPS: %d\n", tps_val);
 477
 478                 tps_val = rd(DIB3000MB_REG_TPS_CODE_RATE_LP);
 479         } else {
 480                 deb_getf("HRCH OFF\n");
 481                 cr = &ofdm->code_rate_HP;
 482                 ofdm->code_rate_LP = FEC_NONE;
 483                 ofdm->hierarchy_information = HIERARCHY_NONE;
 484
 485                 tps_val = rd(DIB3000MB_REG_TPS_CODE_RATE_HP);
 486         }
 487
 488         switch (tps_val) {
 489                 case DIB3000_FEC_1_2:
 490                         deb_getf("FEC_1_2 ");
 491                         *cr = FEC_1_2;
 492                         break;
 493                 case DIB3000_FEC_2_3:
 494                         deb_getf("FEC_2_3 ");
 495                         *cr = FEC_2_3;
 496                         break;
 497                 case DIB3000_FEC_3_4:
 498                         deb_getf("FEC_3_4 ");
 499                         *cr = FEC_3_4;
 500                         break;
 501                 case DIB3000_FEC_5_6:
 502                         deb_getf("FEC_5_6 ");
 503                         *cr = FEC_4_5;
 504                         break;
 505                 case DIB3000_FEC_7_8:
 506                         deb_getf("FEC_7_8 ");
 507                         *cr = FEC_7_8;
 508                         break;
 509                 default:
 510                         err("Unexpected FEC returned by TPS (%d)", tps_val);
 511                         break;
 512         }
 513         deb_getf("TPS: %d\n",tps_val);
 514
 515         switch ((tps_val = rd(DIB3000MB_REG_TPS_GUARD_TIME))) {
 516                 case DIB3000_GUARD_TIME_1_32:
 517                         deb_getf("GUARD_INTERVAL_1_32 ");
 518                         ofdm->guard_interval = GUARD_INTERVAL_1_32;
 519                         break;
 520                 case DIB3000_GUARD_TIME_1_16:
 521                         deb_getf("GUARD_INTERVAL_1_16 ");
 522                         ofdm->guard_interval = GUARD_INTERVAL_1_16;
 523                         break;
 524                 case DIB3000_GUARD_TIME_1_8:
 525                         deb_getf("GUARD_INTERVAL_1_8 ");
 526                         ofdm->guard_interval = GUARD_INTERVAL_1_8;
 527                         break;
 528                 case DIB3000_GUARD_TIME_1_4:
 529                         deb_getf("GUARD_INTERVAL_1_4 ");
 530                         ofdm->guard_interval = GUARD_INTERVAL_1_4;
 531                         break;
 532                 default:
 533                         err("Unexpected Guard Time returned by TPS (%d)", tps_val);
 534                         break;
 535         }
 536         deb_getf("TPS: %d\n", tps_val);
 537
 538         switch ((tps_val = rd(DIB3000MB_REG_TPS_FFT))) {
 539                 case DIB3000_TRANSMISSION_MODE_2K:
 540                         deb_getf("TRANSMISSION_MODE_2K ");
 541                         ofdm->transmission_mode = TRANSMISSION_MODE_2K;
 542                         break;
 543                 case DIB3000_TRANSMISSION_MODE_8K:
 544                         deb_getf("TRANSMISSION_MODE_8K ");
 545                         ofdm->transmission_mode = TRANSMISSION_MODE_8K;
 546                         break;
 547                 default:
 548                         err("unexpected transmission mode return by TPS (%d)", tps_val);
 549                         break;
 550         }
 551         deb_getf("TPS: %d\n", tps_val);
 552
 553         return 0;
 554 }
 555
 556 static int dib3000mb_read_status(struct dvb_frontend* fe, fe_status_t *stat)
 557 {
 558         struct dib3000_state* state = fe->demodulator_priv;
 559
 560         *stat = 0;
 561
 562         if (rd(DIB3000MB_REG_AGC_LOCK))
 563                 *stat |= FE_HAS_SIGNAL;
 564         if (rd(DIB3000MB_REG_CARRIER_LOCK))
 565                 *stat |= FE_HAS_CARRIER;
 566         if (rd(DIB3000MB_REG_VIT_LCK))
 567                 *stat |= FE_HAS_VITERBI;
 568         if (rd(DIB3000MB_REG_TS_SYNC_LOCK))
 569                 *stat |= (FE_HAS_SYNC | FE_HAS_LOCK);
 570
 571         deb_getf("actual status is %2x\n",*stat);
 572
 573         deb_getf("autoval: tps: %d, qam: %d, hrch: %d, alpha: %d, hp: %d, lp: %d, guard: %d, fft: %d cell: %d\n",
 574                         rd(DIB3000MB_REG_TPS_LOCK),
 575                         rd(DIB3000MB_REG_TPS_QAM),
 576                         rd(DIB3000MB_REG_TPS_HRCH),
 577                         rd(DIB3000MB_REG_TPS_VIT_ALPHA),
 578                         rd(DIB3000MB_REG_TPS_CODE_RATE_HP),
 579                         rd(DIB3000MB_REG_TPS_CODE_RATE_LP),
 580                         rd(DIB3000MB_REG_TPS_GUARD_TIME),
 581                         rd(DIB3000MB_REG_TPS_FFT),
 582                         rd(DIB3000MB_REG_TPS_CELL_ID));
 583
 584         //*stat = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK;
 585         return 0;
 586 }
 587
 588 static int dib3000mb_read_ber(struct dvb_frontend* fe, u32 *ber)
 589 {
 590         struct dib3000_state* state = fe->demodulator_priv;
 591
 592         *ber = ((rd(DIB3000MB_REG_BER_MSB) << 16) | rd(DIB3000MB_REG_BER_LSB));
 593         return 0;
 594 }
 595
 596 /* see dib3000-watch dvb-apps for exact calcuations of signal_strength and snr */
 597 static int dib3000mb_read_signal_strength(struct dvb_frontend* fe, u16 *strength)
 598 {
 599         struct dib3000_state* state = fe->demodulator_priv;
 600
 601         *strength = rd(DIB3000MB_REG_SIGNAL_POWER) * 0xffff / 0x170;
 602         return 0;
 603 }
 604
 605 static int dib3000mb_read_snr(struct dvb_frontend* fe, u16 *snr)
 606 {
 607         struct dib3000_state* state = fe->demodulator_priv;
 608         short sigpow = rd(DIB3000MB_REG_SIGNAL_POWER);
 609         int icipow = ((rd(DIB3000MB_REG_NOISE_POWER_MSB) & 0xff) << 16) |
 610                 rd(DIB3000MB_REG_NOISE_POWER_LSB);
 611         *snr = (sigpow << 8) / ((icipow > 0) ? icipow : 1);
 612         return 0;
 613 }
 614
 615 static int dib3000mb_read_unc_blocks(struct dvb_frontend* fe, u32 *unc)
 616 {
 617         struct dib3000_state* state = fe->demodulator_priv;
 618
 619         *unc = rd(DIB3000MB_REG_PACKET_ERROR_RATE);
 620         return 0;
 621 }
 622
 623 static int dib3000mb_sleep(struct dvb_frontend* fe)
 624 {
 625         struct dib3000_state* state = fe->demodulator_priv;
 626         deb_info("dib3000mb is going to bed.\n");
 627         wr(DIB3000MB_REG_POWER_CONTROL, DIB3000MB_POWER_DOWN);
 628         return 0;
 629 }
 630
 631 static int dib3000mb_fe_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings *tune)
 632 {
 633         tune->min_delay_ms = 800;
 634         return 0;
 635 }
 636
 637 static int dib3000mb_fe_init_nonmobile(struct dvb_frontend* fe)
 638 {
 639         return dib3000mb_fe_init(fe, 0);
 640 }
 641
 642 static int dib3000mb_set_frontend_and_tuner(struct dvb_frontend* fe, struct dvb_frontend_parameters *fep)
 643 {
 644         return dib3000mb_set_frontend(fe, fep, 1);
 645 }
 646
 647 static void dib3000mb_release(struct dvb_frontend* fe)
 648 {
 649         struct dib3000_state *state = fe->demodulator_priv;
 650         kfree(state);
 651 }
 652
 653 /* pid filter and transfer stuff */
 654 static int dib3000mb_pid_control(struct dvb_frontend *fe,int index, int pid,int onoff)
 655 {
 656         struct dib3000_state *state = fe->demodulator_priv;
 657         pid = (onoff ? pid | DIB3000_ACTIVATE_PID_FILTERING : 0);
 658         wr(index+DIB3000MB_REG_FIRST_PID,pid);
 659         return 0;
 660 }
 661
 662 static int dib3000mb_fifo_control(struct dvb_frontend *fe, int onoff)
 663 {
 664         struct dib3000_state *state = fe->demodulator_priv;
 665
 666         deb_xfer("%s fifo\n",onoff ? "enabling" : "disabling");
 667         if (onoff) {
 668                 wr(DIB3000MB_REG_FIFO, DIB3000MB_FIFO_ACTIVATE);
 669         } else {
 670                 wr(DIB3000MB_REG_FIFO, DIB3000MB_FIFO_INHIBIT);
 671         }
 672         return 0;
 673 }
 674
 675 static int dib3000mb_pid_parse(struct dvb_frontend *fe, int onoff)
 676 {
 677         struct dib3000_state *state = fe->demodulator_priv;
 678         deb_xfer("%s pid parsing\n",onoff ? "enabling" : "disabling");
 679         wr(DIB3000MB_REG_PID_PARSE,onoff);
 680         return 0;
 681 }
 682
 683 static int dib3000mb_tuner_pass_ctrl(struct dvb_frontend *fe, int onoff, u8 pll_addr)
 684 {
 685         struct dib3000_state *state = fe->demodulator_priv;
 686         if (onoff) {
 687                 wr(DIB3000MB_REG_TUNER, DIB3000_TUNER_WRITE_ENABLE(pll_addr));
 688         } else {
 689                 wr(DIB3000MB_REG_TUNER, DIB3000_TUNER_WRITE_DISABLE(pll_addr));
 690         }
 691         return 0;
 692 }
 693
 694 static struct dvb_frontend_ops dib3000mb_ops;
 695
 696 struct dvb_frontend* dib3000mb_attach(const struct dib3000_config* config,
 697                                       struct i2c_adapter* i2c, struct dib_fe_xfer_ops *xfer_ops)
 698 {
 699         struct dib3000_state* state = NULL;
 700
 701         /* allocate memory for the internal state */
 702         state = kmalloc(sizeof(struct dib3000_state), GFP_KERNEL);
 703         if (state == NULL)
 704                 goto error;
 705         memset(state,0,sizeof(struct dib3000_state));
 706
 707         /* setup the state */
 708         state->i2c = i2c;
 709         memcpy(&state->config,config,sizeof(struct dib3000_config));
 710         memcpy(&state->ops, &dib3000mb_ops, sizeof(struct dvb_frontend_ops));
 711
 712         /* check for the correct demod */
 713         if (rd(DIB3000_REG_MANUFACTOR_ID) != DIB3000_I2C_ID_DIBCOM)
 714                 goto error;
 715
 716         if (rd(DIB3000_REG_DEVICE_ID) != DIB3000MB_DEVICE_ID)
 717                 goto error;
 718
 719         /* create dvb_frontend */
 720         state->frontend.ops = &state->ops;
 721         state->frontend.demodulator_priv = state;
 722
 723         /* set the xfer operations */
 724         xfer_ops->pid_parse = dib3000mb_pid_parse;
 725         xfer_ops->fifo_ctrl = dib3000mb_fifo_control;
 726         xfer_ops->pid_ctrl = dib3000mb_pid_control;
 727         xfer_ops->tuner_pass_ctrl = dib3000mb_tuner_pass_ctrl;
 728
 729         return &state->frontend;
 730
 731 error:
 732         kfree(state);
 733         return NULL;
 734 }
 735
 736 static struct dvb_frontend_ops dib3000mb_ops = {
 737
 738         .info = {
 739                 .name                   = "DiBcom 3000M-B DVB-T",
 740                 .type                   = FE_OFDM,
 741                 .frequency_min          = 44250000,
 742                 .frequency_max          = 867250000,
 743                 .frequency_stepsize     = 62500,
 744                 .caps = FE_CAN_INVERSION_AUTO |
 745                                 FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
 746                                 FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
 747                                 FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO |
 748                                 FE_CAN_TRANSMISSION_MODE_AUTO |
 749                                 FE_CAN_GUARD_INTERVAL_AUTO |
 750                                 FE_CAN_RECOVER |
 751                                 FE_CAN_HIERARCHY_AUTO,
 752         },
 753
 754         .release = dib3000mb_release,
 755
 756         .init = dib3000mb_fe_init_nonmobile,
 757         .sleep = dib3000mb_sleep,
 758
 759         .set_frontend = dib3000mb_set_frontend_and_tuner,
 760         .get_frontend = dib3000mb_get_frontend,
 761         .get_tune_settings = dib3000mb_fe_get_tune_settings,
 762
 763         .read_status = dib3000mb_read_status,
 764         .read_ber = dib3000mb_read_ber,
 765         .read_signal_strength = dib3000mb_read_signal_strength,
 766         .read_snr = dib3000mb_read_snr,
 767         .read_ucblocks = dib3000mb_read_unc_blocks,
 768 };
 769
 770 MODULE_AUTHOR(DRIVER_AUTHOR);
 771 MODULE_DESCRIPTION(DRIVER_DESC);
 772 MODULE_LICENSE("GPL");
 773
 774 EXPORT_SYMBOL(dib3000mb_attach);