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_tuner_pass_ctrl(struct dvb_frontend *fe, int onoff, u8 pll_addr);
  52
  53 static int dib3000mb_get_frontend(struct dvb_frontend* fe,
  54                                   struct dvb_frontend_parameters *fep);
  55
  56 static int dib3000mb_set_frontend(struct dvb_frontend* fe,
  57                                   struct dvb_frontend_parameters *fep, int tuner)
  58 {
  59         struct dib3000_state* state = fe->demodulator_priv;
  60         struct dvb_ofdm_parameters *ofdm = &fep->u.ofdm;
  61         fe_code_rate_t fe_cr = FEC_NONE;
  62         int search_state, seq;
  63
  64         if (tuner && state->config.pll_addr && state->config.pll_set) {
  65                 dib3000mb_tuner_pass_ctrl(fe,1,state->config.pll_addr(fe));
  66                 state->config.pll_set(fe, fep, NULL);
  67                 dib3000mb_tuner_pass_ctrl(fe,0,state->config.pll_addr(fe));
  68
  69                 deb_setf("bandwidth: ");
  70                 switch (ofdm->bandwidth) {
  71                         case BANDWIDTH_8_MHZ:
  72                                 deb_setf("8 MHz\n");
  73                                 wr_foreach(dib3000mb_reg_timing_freq, dib3000mb_timing_freq[2]);
  74                                 wr_foreach(dib3000mb_reg_bandwidth, dib3000mb_bandwidth_8mhz);
  75                                 break;
  76                         case BANDWIDTH_7_MHZ:
  77                                 deb_setf("7 MHz\n");
  78                                 wr_foreach(dib3000mb_reg_timing_freq, dib3000mb_timing_freq[1]);
  79                                 wr_foreach(dib3000mb_reg_bandwidth, dib3000mb_bandwidth_7mhz);
  80                                 break;
  81                         case BANDWIDTH_6_MHZ:
  82                                 deb_setf("6 MHz\n");
  83                                 wr_foreach(dib3000mb_reg_timing_freq, dib3000mb_timing_freq[0]);
  84                                 wr_foreach(dib3000mb_reg_bandwidth, dib3000mb_bandwidth_6mhz);
  85                                 break;
  86                         case BANDWIDTH_AUTO:
  87                                 return -EOPNOTSUPP;
  88                         default:
  89                                 err("unkown bandwidth value.");
  90                                 return -EINVAL;
  91                 }
  92         }
  93         wr(DIB3000MB_REG_LOCK1_MASK, DIB3000MB_LOCK1_SEARCH_4);
  94
  95         deb_setf("transmission mode: ");
  96         switch (ofdm->transmission_mode) {
  97                 case TRANSMISSION_MODE_2K:
  98                         deb_setf("2k\n");
  99                         wr(DIB3000MB_REG_FFT, DIB3000_TRANSMISSION_MODE_2K);
 100                         break;
 101                 case TRANSMISSION_MODE_8K:
 102                         deb_setf("8k\n");
 103                         wr(DIB3000MB_REG_FFT, DIB3000_TRANSMISSION_MODE_8K);
 104                         break;
 105                 case TRANSMISSION_MODE_AUTO:
 106                         deb_setf("auto\n");
 107                         break;
 108                 default:
 109                         return -EINVAL;
 110         }
 111
 112         deb_setf("guard: ");
 113         switch (ofdm->guard_interval) {
 114                 case GUARD_INTERVAL_1_32:
 115                         deb_setf("1_32\n");
 116                         wr(DIB3000MB_REG_GUARD_TIME, DIB3000_GUARD_TIME_1_32);
 117                         break;
 118                 case GUARD_INTERVAL_1_16:
 119                         deb_setf("1_16\n");
 120                         wr(DIB3000MB_REG_GUARD_TIME, DIB3000_GUARD_TIME_1_16);
 121                         break;
 122                 case GUARD_INTERVAL_1_8:
 123                         deb_setf("1_8\n");
 124                         wr(DIB3000MB_REG_GUARD_TIME, DIB3000_GUARD_TIME_1_8);
 125                         break;
 126                 case GUARD_INTERVAL_1_4:
 127                         deb_setf("1_4\n");
 128                         wr(DIB3000MB_REG_GUARD_TIME, DIB3000_GUARD_TIME_1_4);
 129                         break;
 130                 case GUARD_INTERVAL_AUTO:
 131                         deb_setf("auto\n");
 132                         break;
 133                 default:
 134                         return -EINVAL;
 135         }
 136
 137         deb_setf("inversion: ");
 138         switch (fep->inversion) {
 139                 case INVERSION_OFF:
 140                         deb_setf("off\n");
 141                         wr(DIB3000MB_REG_DDS_INV, DIB3000_DDS_INVERSION_OFF);
 142                         break;
 143                 case INVERSION_AUTO:
 144                         deb_setf("auto ");
 145                         break;
 146                 case INVERSION_ON:
 147                         deb_setf("on\n");
 148                         wr(DIB3000MB_REG_DDS_INV, DIB3000_DDS_INVERSION_ON);
 149                         break;
 150                 default:
 151                         return -EINVAL;
 152         }
 153
 154         deb_setf("constellation: ");
 155         switch (ofdm->constellation) {
 156                 case QPSK:
 157                         deb_setf("qpsk\n");
 158                         wr(DIB3000MB_REG_QAM, DIB3000_CONSTELLATION_QPSK);
 159                         break;
 160                 case QAM_16:
 161                         deb_setf("qam16\n");
 162                         wr(DIB3000MB_REG_QAM, DIB3000_CONSTELLATION_16QAM);
 163                         break;
 164                 case QAM_64:
 165                         deb_setf("qam64\n");
 166                         wr(DIB3000MB_REG_QAM, DIB3000_CONSTELLATION_64QAM);
 167                         break;
 168                 case QAM_AUTO:
 169                         break;
 170                 default:
 171                         return -EINVAL;
 172         }
 173         deb_setf("hierachy: ");
 174         switch (ofdm->hierarchy_information) {
 175                 case HIERARCHY_NONE:
 176                         deb_setf("none ");
 177                         /* fall through */
 178                 case HIERARCHY_1:
 179                         deb_setf("alpha=1\n");
 180                         wr(DIB3000MB_REG_VIT_ALPHA, DIB3000_ALPHA_1);
 181                         break;
 182                 case HIERARCHY_2:
 183                         deb_setf("alpha=2\n");
 184                         wr(DIB3000MB_REG_VIT_ALPHA, DIB3000_ALPHA_2);
 185                         break;
 186                 case HIERARCHY_4:
 187                         deb_setf("alpha=4\n");
 188                         wr(DIB3000MB_REG_VIT_ALPHA, DIB3000_ALPHA_4);
 189                         break;
 190                 case HIERARCHY_AUTO:
 191                         deb_setf("alpha=auto\n");
 192                         break;
 193                 default:
 194                         return -EINVAL;
 195         }
 196
 197         deb_setf("hierarchy: ");
 198         if (ofdm->hierarchy_information == HIERARCHY_NONE) {
 199                 deb_setf("none\n");
 200                 wr(DIB3000MB_REG_VIT_HRCH, DIB3000_HRCH_OFF);
 201                 wr(DIB3000MB_REG_VIT_HP, DIB3000_SELECT_HP);
 202                 fe_cr = ofdm->code_rate_HP;
 203         } else if (ofdm->hierarchy_information != HIERARCHY_AUTO) {
 204                 deb_setf("on\n");
 205                 wr(DIB3000MB_REG_VIT_HRCH, DIB3000_HRCH_ON);
 206                 wr(DIB3000MB_REG_VIT_HP, DIB3000_SELECT_LP);
 207                 fe_cr = ofdm->code_rate_LP;
 208         }
 209         deb_setf("fec: ");
 210         switch (fe_cr) {
 211                 case FEC_1_2:
 212                         deb_setf("1_2\n");
 213                         wr(DIB3000MB_REG_VIT_CODE_RATE, DIB3000_FEC_1_2);
 214                         break;
 215                 case FEC_2_3:
 216                         deb_setf("2_3\n");
 217                         wr(DIB3000MB_REG_VIT_CODE_RATE, DIB3000_FEC_2_3);
 218                         break;
 219                 case FEC_3_4:
 220                         deb_setf("3_4\n");
 221                         wr(DIB3000MB_REG_VIT_CODE_RATE, DIB3000_FEC_3_4);
 222                         break;
 223                 case FEC_5_6:
 224                         deb_setf("5_6\n");
 225                         wr(DIB3000MB_REG_VIT_CODE_RATE, DIB3000_FEC_5_6);
 226                         break;
 227                 case FEC_7_8:
 228                         deb_setf("7_8\n");
 229                         wr(DIB3000MB_REG_VIT_CODE_RATE, DIB3000_FEC_7_8);
 230                         break;
 231                 case FEC_NONE:
 232                         deb_setf("none ");
 233                         break;
 234                 case FEC_AUTO:
 235                         deb_setf("auto\n");
 236                         break;
 237                 default:
 238                         return -EINVAL;
 239         }
 240
 241         seq = dib3000_seq
 242                 [ofdm->transmission_mode == TRANSMISSION_MODE_AUTO]
 243                 [ofdm->guard_interval == GUARD_INTERVAL_AUTO]
 244                 [fep->inversion == INVERSION_AUTO];
 245
 246         deb_setf("seq? %d\n", seq);
 247
 248         wr(DIB3000MB_REG_SEQ, seq);
 249
 250         wr(DIB3000MB_REG_ISI, seq ? DIB3000MB_ISI_INHIBIT : DIB3000MB_ISI_ACTIVATE);
 251
 252         if (ofdm->transmission_mode == TRANSMISSION_MODE_2K) {
 253                 if (ofdm->guard_interval == GUARD_INTERVAL_1_8) {
 254                         wr(DIB3000MB_REG_SYNC_IMPROVEMENT, DIB3000MB_SYNC_IMPROVE_2K_1_8);
 255                 } else {
 256                         wr(DIB3000MB_REG_SYNC_IMPROVEMENT, DIB3000MB_SYNC_IMPROVE_DEFAULT);
 257                 }
 258
 259                 wr(DIB3000MB_REG_UNK_121, DIB3000MB_UNK_121_2K);
 260         } else {
 261                 wr(DIB3000MB_REG_UNK_121, DIB3000MB_UNK_121_DEFAULT);
 262         }
 263
 264         wr(DIB3000MB_REG_MOBILE_ALGO, DIB3000MB_MOBILE_ALGO_OFF);
 265         wr(DIB3000MB_REG_MOBILE_MODE_QAM, DIB3000MB_MOBILE_MODE_QAM_OFF);
 266         wr(DIB3000MB_REG_MOBILE_MODE, DIB3000MB_MOBILE_MODE_OFF);
 267
 268         wr_foreach(dib3000mb_reg_agc_bandwidth, dib3000mb_agc_bandwidth_high);
 269
 270         wr(DIB3000MB_REG_ISI, DIB3000MB_ISI_ACTIVATE);
 271
 272         wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_AGC + DIB3000MB_RESTART_CTRL);
 273         wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_OFF);
 274
 275         /* wait for AGC lock */
 276         msleep(70);
 277
 278         wr_foreach(dib3000mb_reg_agc_bandwidth, dib3000mb_agc_bandwidth_low);
 279
 280         /* something has to be auto searched */
 281         if (ofdm->constellation == QAM_AUTO ||
 282                 ofdm->hierarchy_information == HIERARCHY_AUTO ||
 283                 fe_cr == FEC_AUTO ||
 284                 fep->inversion == INVERSION_AUTO) {
 285                 int as_count=0;
 286
 287                 deb_setf("autosearch enabled.\n");
 288
 289                 wr(DIB3000MB_REG_ISI, DIB3000MB_ISI_INHIBIT);
 290
 291                 wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_AUTO_SEARCH);
 292                 wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_OFF);
 293
 294                 while ((search_state =
 295                                 dib3000_search_status(
 296                                         rd(DIB3000MB_REG_AS_IRQ_PENDING),
 297                                         rd(DIB3000MB_REG_LOCK2_VALUE))) < 0 && as_count++ < 100)
 298                         msleep(1);
 299
 300                 deb_setf("search_state after autosearch %d after %d checks\n",search_state,as_count);
 301
 302                 if (search_state == 1) {
 303                         struct dvb_frontend_parameters feps;
 304                         if (dib3000mb_get_frontend(fe, &feps) == 0) {
 305                                 deb_setf("reading tuning data from frontend succeeded.\n");
 306                                 return dib3000mb_set_frontend(fe, &feps, 0);
 307                         }
 308                 }
 309
 310         } else {
 311                 wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_CTRL);
 312                 wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_OFF);
 313         }
 314
 315         return 0;
 316 }
 317
 318 static int dib3000mb_fe_init(struct dvb_frontend* fe, int mobile_mode)
 319 {
 320         struct dib3000_state* state = fe->demodulator_priv;
 321
 322         deb_info("dib3000mb is getting up.\n");
 323         wr(DIB3000MB_REG_POWER_CONTROL, DIB3000MB_POWER_UP);
 324
 325         wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_AGC);
 326
 327         wr(DIB3000MB_REG_RESET_DEVICE, DIB3000MB_RESET_DEVICE);
 328         wr(DIB3000MB_REG_RESET_DEVICE, DIB3000MB_RESET_DEVICE_RST);
 329
 330         wr(DIB3000MB_REG_CLOCK, DIB3000MB_CLOCK_DEFAULT);
 331
 332         wr(DIB3000MB_REG_ELECT_OUT_MODE, DIB3000MB_ELECT_OUT_MODE_ON);
 333
 334         wr(DIB3000MB_REG_DDS_FREQ_MSB, DIB3000MB_DDS_FREQ_MSB);
 335         wr(DIB3000MB_REG_DDS_FREQ_LSB, DIB3000MB_DDS_FREQ_LSB);
 336
 337         wr_foreach(dib3000mb_reg_timing_freq, dib3000mb_timing_freq[2]);
 338
 339         wr_foreach(dib3000mb_reg_impulse_noise,
 340                         dib3000mb_impulse_noise_values[DIB3000MB_IMPNOISE_OFF]);
 341
 342         wr_foreach(dib3000mb_reg_agc_gain, dib3000mb_default_agc_gain);
 343
 344         wr(DIB3000MB_REG_PHASE_NOISE, DIB3000MB_PHASE_NOISE_DEFAULT);
 345
 346         wr_foreach(dib3000mb_reg_phase_noise, dib3000mb_default_noise_phase);
 347
 348         wr_foreach(dib3000mb_reg_lock_duration, dib3000mb_default_lock_duration);
 349
 350         wr_foreach(dib3000mb_reg_agc_bandwidth, dib3000mb_agc_bandwidth_low);
 351
 352         wr(DIB3000MB_REG_LOCK0_MASK, DIB3000MB_LOCK0_DEFAULT);
 353         wr(DIB3000MB_REG_LOCK1_MASK, DIB3000MB_LOCK1_SEARCH_4);
 354         wr(DIB3000MB_REG_LOCK2_MASK, DIB3000MB_LOCK2_DEFAULT);
 355         wr(DIB3000MB_REG_SEQ, dib3000_seq[1][1][1]);
 356
 357         wr_foreach(dib3000mb_reg_bandwidth, dib3000mb_bandwidth_8mhz);
 358
 359         wr(DIB3000MB_REG_UNK_68, DIB3000MB_UNK_68);
 360         wr(DIB3000MB_REG_UNK_69, DIB3000MB_UNK_69);
 361         wr(DIB3000MB_REG_UNK_71, DIB3000MB_UNK_71);
 362         wr(DIB3000MB_REG_UNK_77, DIB3000MB_UNK_77);
 363         wr(DIB3000MB_REG_UNK_78, DIB3000MB_UNK_78);
 364         wr(DIB3000MB_REG_ISI, DIB3000MB_ISI_INHIBIT);
 365         wr(DIB3000MB_REG_UNK_92, DIB3000MB_UNK_92);
 366         wr(DIB3000MB_REG_UNK_96, DIB3000MB_UNK_96);
 367         wr(DIB3000MB_REG_UNK_97, DIB3000MB_UNK_97);
 368         wr(DIB3000MB_REG_UNK_106, DIB3000MB_UNK_106);
 369         wr(DIB3000MB_REG_UNK_107, DIB3000MB_UNK_107);
 370         wr(DIB3000MB_REG_UNK_108, DIB3000MB_UNK_108);
 371         wr(DIB3000MB_REG_UNK_122, DIB3000MB_UNK_122);
 372         wr(DIB3000MB_REG_MOBILE_MODE_QAM, DIB3000MB_MOBILE_MODE_QAM_OFF);
 373         wr(DIB3000MB_REG_BERLEN, DIB3000MB_BERLEN_DEFAULT);
 374
 375         wr_foreach(dib3000mb_reg_filter_coeffs, dib3000mb_filter_coeffs);
 376
 377         wr(DIB3000MB_REG_MOBILE_ALGO, DIB3000MB_MOBILE_ALGO_ON);
 378         wr(DIB3000MB_REG_MULTI_DEMOD_MSB, DIB3000MB_MULTI_DEMOD_MSB);
 379         wr(DIB3000MB_REG_MULTI_DEMOD_LSB, DIB3000MB_MULTI_DEMOD_LSB);
 380
 381         wr(DIB3000MB_REG_OUTPUT_MODE, DIB3000MB_OUTPUT_MODE_SLAVE);
 382
 383         wr(DIB3000MB_REG_FIFO_142, DIB3000MB_FIFO_142);
 384         wr(DIB3000MB_REG_MPEG2_OUT_MODE, DIB3000MB_MPEG2_OUT_MODE_188);
 385         wr(DIB3000MB_REG_PID_PARSE, DIB3000MB_PID_PARSE_ACTIVATE);
 386         wr(DIB3000MB_REG_FIFO, DIB3000MB_FIFO_INHIBIT);
 387         wr(DIB3000MB_REG_FIFO_146, DIB3000MB_FIFO_146);
 388         wr(DIB3000MB_REG_FIFO_147, DIB3000MB_FIFO_147);
 389
 390         wr(DIB3000MB_REG_DATA_IN_DIVERSITY, DIB3000MB_DATA_DIVERSITY_IN_OFF);
 391
 392         if (state->config.pll_init) {
 393                 dib3000mb_tuner_pass_ctrl(fe,1,state->config.pll_addr(fe));
 394                 state->config.pll_init(fe,NULL);
 395                 dib3000mb_tuner_pass_ctrl(fe,0,state->config.pll_addr(fe));
 396         }
 397
 398         return 0;
 399 }
 400
 401 static int dib3000mb_get_frontend(struct dvb_frontend* fe,
 402                                   struct dvb_frontend_parameters *fep)
 403 {
 404         struct dib3000_state* state = fe->demodulator_priv;
 405         struct dvb_ofdm_parameters *ofdm = &fep->u.ofdm;
 406         fe_code_rate_t *cr;
 407         u16 tps_val;
 408         int inv_test1,inv_test2;
 409         u32 dds_val, threshold = 0x800000;
 410
 411         if (!rd(DIB3000MB_REG_TPS_LOCK))
 412                 return 0;
 413
 414         dds_val = ((rd(DIB3000MB_REG_DDS_VALUE_MSB) & 0xff) << 16) + rd(DIB3000MB_REG_DDS_VALUE_LSB);
 415         deb_getf("DDS_VAL: %x %x %x",dds_val, rd(DIB3000MB_REG_DDS_VALUE_MSB), rd(DIB3000MB_REG_DDS_VALUE_LSB));
 416         if (dds_val < threshold)
 417                 inv_test1 = 0;
 418         else if (dds_val == threshold)
 419                 inv_test1 = 1;
 420         else
 421                 inv_test1 = 2;
 422
 423         dds_val = ((rd(DIB3000MB_REG_DDS_FREQ_MSB) & 0xff) << 16) + rd(DIB3000MB_REG_DDS_FREQ_LSB);
 424         deb_getf("DDS_FREQ: %x %x %x",dds_val, rd(DIB3000MB_REG_DDS_FREQ_MSB), rd(DIB3000MB_REG_DDS_FREQ_LSB));
 425         if (dds_val < threshold)
 426                 inv_test2 = 0;
 427         else if (dds_val == threshold)
 428                 inv_test2 = 1;
 429         else
 430                 inv_test2 = 2;
 431
 432         fep->inversion =
 433                 ((inv_test2 == 2) && (inv_test1==1 || inv_test1==0)) ||
 434                 ((inv_test2 == 0) && (inv_test1==1 || inv_test1==2)) ?
 435                 INVERSION_ON : INVERSION_OFF;
 436
 437         deb_getf("inversion %d %d, %d\n", inv_test2, inv_test1, fep->inversion);
 438
 439         switch ((tps_val = rd(DIB3000MB_REG_TPS_QAM))) {
 440                 case DIB3000_CONSTELLATION_QPSK:
 441                         deb_getf("QPSK ");
 442                         ofdm->constellation = QPSK;
 443                         break;
 444                 case DIB3000_CONSTELLATION_16QAM:
 445                         deb_getf("QAM16 ");
 446                         ofdm->constellation = QAM_16;
 447                         break;
 448                 case DIB3000_CONSTELLATION_64QAM:
 449                         deb_getf("QAM64 ");
 450                         ofdm->constellation = QAM_64;
 451                         break;
 452                 default:
 453                         err("Unexpected constellation returned by TPS (%d)", tps_val);
 454                         break;
 455         }
 456         deb_getf("TPS: %d\n", tps_val);
 457
 458         if (rd(DIB3000MB_REG_TPS_HRCH)) {
 459                 deb_getf("HRCH ON\n");
 460                 cr = &ofdm->code_rate_LP;
 461                 ofdm->code_rate_HP = FEC_NONE;
 462                 switch ((tps_val = rd(DIB3000MB_REG_TPS_VIT_ALPHA))) {
 463                         case DIB3000_ALPHA_0:
 464                                 deb_getf("HIERARCHY_NONE ");
 465                                 ofdm->hierarchy_information = HIERARCHY_NONE;
 466                                 break;
 467                         case DIB3000_ALPHA_1:
 468                                 deb_getf("HIERARCHY_1 ");
 469                                 ofdm->hierarchy_information = HIERARCHY_1;
 470                                 break;
 471                         case DIB3000_ALPHA_2:
 472                                 deb_getf("HIERARCHY_2 ");
 473                                 ofdm->hierarchy_information = HIERARCHY_2;
 474                                 break;
 475                         case DIB3000_ALPHA_4:
 476                                 deb_getf("HIERARCHY_4 ");
 477                                 ofdm->hierarchy_information = HIERARCHY_4;
 478                                 break;
 479                         default:
 480                                 err("Unexpected ALPHA value returned by TPS (%d)", tps_val);
 481                                 break;
 482                 }
 483                 deb_getf("TPS: %d\n", tps_val);
 484
 485                 tps_val = rd(DIB3000MB_REG_TPS_CODE_RATE_LP);
 486         } else {
 487                 deb_getf("HRCH OFF\n");
 488                 cr = &ofdm->code_rate_HP;
 489                 ofdm->code_rate_LP = FEC_NONE;
 490                 ofdm->hierarchy_information = HIERARCHY_NONE;
 491
 492                 tps_val = rd(DIB3000MB_REG_TPS_CODE_RATE_HP);
 493         }
 494
 495         switch (tps_val) {
 496                 case DIB3000_FEC_1_2:
 497                         deb_getf("FEC_1_2 ");
 498                         *cr = FEC_1_2;
 499                         break;
 500                 case DIB3000_FEC_2_3:
 501                         deb_getf("FEC_2_3 ");
 502                         *cr = FEC_2_3;
 503                         break;
 504                 case DIB3000_FEC_3_4:
 505                         deb_getf("FEC_3_4 ");
 506                         *cr = FEC_3_4;
 507                         break;
 508                 case DIB3000_FEC_5_6:
 509                         deb_getf("FEC_5_6 ");
 510                         *cr = FEC_4_5;
 511                         break;
 512                 case DIB3000_FEC_7_8:
 513                         deb_getf("FEC_7_8 ");
 514                         *cr = FEC_7_8;
 515                         break;
 516                 default:
 517                         err("Unexpected FEC returned by TPS (%d)", tps_val);
 518                         break;
 519         }
 520         deb_getf("TPS: %d\n",tps_val);
 521
 522         switch ((tps_val = rd(DIB3000MB_REG_TPS_GUARD_TIME))) {
 523                 case DIB3000_GUARD_TIME_1_32:
 524                         deb_getf("GUARD_INTERVAL_1_32 ");
 525                         ofdm->guard_interval = GUARD_INTERVAL_1_32;
 526                         break;
 527                 case DIB3000_GUARD_TIME_1_16:
 528                         deb_getf("GUARD_INTERVAL_1_16 ");
 529                         ofdm->guard_interval = GUARD_INTERVAL_1_16;
 530                         break;
 531                 case DIB3000_GUARD_TIME_1_8:
 532                         deb_getf("GUARD_INTERVAL_1_8 ");
 533                         ofdm->guard_interval = GUARD_INTERVAL_1_8;
 534                         break;
 535                 case DIB3000_GUARD_TIME_1_4:
 536                         deb_getf("GUARD_INTERVAL_1_4 ");
 537                         ofdm->guard_interval = GUARD_INTERVAL_1_4;
 538                         break;
 539                 default:
 540                         err("Unexpected Guard Time returned by TPS (%d)", tps_val);
 541                         break;
 542         }
 543         deb_getf("TPS: %d\n", tps_val);
 544
 545         switch ((tps_val = rd(DIB3000MB_REG_TPS_FFT))) {
 546                 case DIB3000_TRANSMISSION_MODE_2K:
 547                         deb_getf("TRANSMISSION_MODE_2K ");
 548                         ofdm->transmission_mode = TRANSMISSION_MODE_2K;
 549                         break;
 550                 case DIB3000_TRANSMISSION_MODE_8K:
 551                         deb_getf("TRANSMISSION_MODE_8K ");
 552                         ofdm->transmission_mode = TRANSMISSION_MODE_8K;
 553                         break;
 554                 default:
 555                         err("unexpected transmission mode return by TPS (%d)", tps_val);
 556                         break;
 557         }
 558         deb_getf("TPS: %d\n", tps_val);
 559
 560         return 0;
 561 }
 562
 563 static int dib3000mb_read_status(struct dvb_frontend* fe, fe_status_t *stat)
 564 {
 565         struct dib3000_state* state = fe->demodulator_priv;
 566
 567         *stat = 0;
 568
 569         if (rd(DIB3000MB_REG_AGC_LOCK))
 570                 *stat |= FE_HAS_SIGNAL;
 571         if (rd(DIB3000MB_REG_CARRIER_LOCK))
 572                 *stat |= FE_HAS_CARRIER;
 573         if (rd(DIB3000MB_REG_VIT_LCK))
 574                 *stat |= FE_HAS_VITERBI;
 575         if (rd(DIB3000MB_REG_TS_SYNC_LOCK))
 576                 *stat |= (FE_HAS_SYNC | FE_HAS_LOCK);
 577
 578         deb_getf("actual status is %2x\n",*stat);
 579
 580         deb_getf("autoval: tps: %d, qam: %d, hrch: %d, alpha: %d, hp: %d, lp: %d, guard: %d, fft: %d cell: %d\n",
 581                         rd(DIB3000MB_REG_TPS_LOCK),
 582                         rd(DIB3000MB_REG_TPS_QAM),
 583                         rd(DIB3000MB_REG_TPS_HRCH),
 584                         rd(DIB3000MB_REG_TPS_VIT_ALPHA),
 585                         rd(DIB3000MB_REG_TPS_CODE_RATE_HP),
 586                         rd(DIB3000MB_REG_TPS_CODE_RATE_LP),
 587                         rd(DIB3000MB_REG_TPS_GUARD_TIME),
 588                         rd(DIB3000MB_REG_TPS_FFT),
 589                         rd(DIB3000MB_REG_TPS_CELL_ID));
 590
 591         //*stat = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK;
 592         return 0;
 593 }
 594
 595 static int dib3000mb_read_ber(struct dvb_frontend* fe, u32 *ber)
 596 {
 597         struct dib3000_state* state = fe->demodulator_priv;
 598
 599         *ber = ((rd(DIB3000MB_REG_BER_MSB) << 16) | rd(DIB3000MB_REG_BER_LSB));
 600         return 0;
 601 }
 602
 603 /* see dib3000-watch dvb-apps for exact calcuations of signal_strength and snr */
 604 static int dib3000mb_read_signal_strength(struct dvb_frontend* fe, u16 *strength)
 605 {
 606         struct dib3000_state* state = fe->demodulator_priv;
 607
 608         *strength = rd(DIB3000MB_REG_SIGNAL_POWER) * 0xffff / 0x170;
 609         return 0;
 610 }
 611
 612 static int dib3000mb_read_snr(struct dvb_frontend* fe, u16 *snr)
 613 {
 614         struct dib3000_state* state = fe->demodulator_priv;
 615         short sigpow = rd(DIB3000MB_REG_SIGNAL_POWER);
 616         int icipow = ((rd(DIB3000MB_REG_NOISE_POWER_MSB) & 0xff) << 16) |
 617                 rd(DIB3000MB_REG_NOISE_POWER_LSB);
 618         *snr = (sigpow << 8) / ((icipow > 0) ? icipow : 1);
 619         return 0;
 620 }
 621
 622 static int dib3000mb_read_unc_blocks(struct dvb_frontend* fe, u32 *unc)
 623 {
 624         struct dib3000_state* state = fe->demodulator_priv;
 625
 626         *unc = rd(DIB3000MB_REG_UNC);
 627         return 0;
 628 }
 629
 630 static int dib3000mb_sleep(struct dvb_frontend* fe)
 631 {
 632         struct dib3000_state* state = fe->demodulator_priv;
 633         deb_info("dib3000mb is going to bed.\n");
 634         wr(DIB3000MB_REG_POWER_CONTROL, DIB3000MB_POWER_DOWN);
 635         return 0;
 636 }
 637
 638 static int dib3000mb_fe_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings *tune)
 639 {
 640         tune->min_delay_ms = 800;
 641         tune->step_size = 166667;
 642         tune->max_drift = 166667 * 2;
 643
 644         return 0;
 645 }
 646
 647 static int dib3000mb_fe_init_nonmobile(struct dvb_frontend* fe)
 648 {
 649         return dib3000mb_fe_init(fe, 0);
 650 }
 651
 652 static int dib3000mb_set_frontend_and_tuner(struct dvb_frontend* fe, struct dvb_frontend_parameters *fep)
 653 {
 654         return dib3000mb_set_frontend(fe, fep, 1);
 655 }
 656
 657 static void dib3000mb_release(struct dvb_frontend* fe)
 658 {
 659         struct dib3000_state *state = fe->demodulator_priv;
 660         kfree(state);
 661 }
 662
 663 /* pid filter and transfer stuff */
 664 static int dib3000mb_pid_control(struct dvb_frontend *fe,int index, int pid,int onoff)
 665 {
 666         struct dib3000_state *state = fe->demodulator_priv;
 667         pid = (onoff ? pid | DIB3000_ACTIVATE_PID_FILTERING : 0);
 668         wr(index+DIB3000MB_REG_FIRST_PID,pid);
 669         return 0;
 670 }
 671
 672 static int dib3000mb_fifo_control(struct dvb_frontend *fe, int onoff)
 673 {
 674         struct dib3000_state *state = fe->demodulator_priv;
 675
 676         deb_xfer("%s fifo\n",onoff ? "enabling" : "disabling");
 677         if (onoff) {
 678                 wr(DIB3000MB_REG_FIFO, DIB3000MB_FIFO_ACTIVATE);
 679         } else {
 680                 wr(DIB3000MB_REG_FIFO, DIB3000MB_FIFO_INHIBIT);
 681         }
 682         return 0;
 683 }
 684
 685 static int dib3000mb_pid_parse(struct dvb_frontend *fe, int onoff)
 686 {
 687         struct dib3000_state *state = fe->demodulator_priv;
 688         deb_xfer("%s pid parsing\n",onoff ? "enabling" : "disabling");
 689         wr(DIB3000MB_REG_PID_PARSE,onoff);
 690         return 0;
 691 }
 692
 693 static int dib3000mb_tuner_pass_ctrl(struct dvb_frontend *fe, int onoff, u8 pll_addr)
 694 {
 695         struct dib3000_state *state = fe->demodulator_priv;
 696         if (onoff) {
 697                 wr(DIB3000MB_REG_TUNER, DIB3000_TUNER_WRITE_ENABLE(pll_addr));
 698         } else {
 699                 wr(DIB3000MB_REG_TUNER, DIB3000_TUNER_WRITE_DISABLE(pll_addr));
 700         }
 701         return 0;
 702 }
 703
 704 static struct dvb_frontend_ops dib3000mb_ops;
 705
 706 struct dvb_frontend* dib3000mb_attach(const struct dib3000_config* config,
 707                                       struct i2c_adapter* i2c, struct dib_fe_xfer_ops *xfer_ops)
 708 {
 709         struct dib3000_state* state = NULL;
 710
 711         /* allocate memory for the internal state */
 712         state = kmalloc(sizeof(struct dib3000_state), GFP_KERNEL);
 713         if (state == NULL)
 714                 goto error;
 715         memset(state,0,sizeof(struct dib3000_state));
 716
 717         /* setup the state */
 718         state->i2c = i2c;
 719         memcpy(&state->config,config,sizeof(struct dib3000_config));
 720         memcpy(&state->ops, &dib3000mb_ops, sizeof(struct dvb_frontend_ops));
 721
 722         /* check for the correct demod */
 723         if (rd(DIB3000_REG_MANUFACTOR_ID) != DIB3000_I2C_ID_DIBCOM)
 724                 goto error;
 725
 726         if (rd(DIB3000_REG_DEVICE_ID) != DIB3000MB_DEVICE_ID)
 727                 goto error;
 728
 729         /* create dvb_frontend */
 730         state->frontend.ops = &state->ops;
 731         state->frontend.demodulator_priv = state;
 732
 733         /* set the xfer operations */
 734         xfer_ops->pid_parse = dib3000mb_pid_parse;
 735         xfer_ops->fifo_ctrl = dib3000mb_fifo_control;
 736         xfer_ops->pid_ctrl = dib3000mb_pid_control;
 737         xfer_ops->tuner_pass_ctrl = dib3000mb_tuner_pass_ctrl;
 738
 739         return &state->frontend;
 740
 741 error:
 742         kfree(state);
 743         return NULL;
 744 }
 745
 746 static struct dvb_frontend_ops dib3000mb_ops = {
 747
 748         .info = {
 749                 .name                   = "DiBcom 3000M-B DVB-T",
 750                 .type                   = FE_OFDM,
 751                 .frequency_min          = 44250000,
 752                 .frequency_max          = 867250000,
 753                 .frequency_stepsize     = 62500,
 754                 .caps = FE_CAN_INVERSION_AUTO |
 755                                 FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
 756                                 FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
 757                                 FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO |
 758                                 FE_CAN_TRANSMISSION_MODE_AUTO |
 759                                 FE_CAN_GUARD_INTERVAL_AUTO |
 760                                 FE_CAN_RECOVER |
 761                                 FE_CAN_HIERARCHY_AUTO,
 762         },
 763
 764         .release = dib3000mb_release,
 765
 766         .init = dib3000mb_fe_init_nonmobile,
 767         .sleep = dib3000mb_sleep,
 768
 769         .set_frontend = dib3000mb_set_frontend_and_tuner,
 770         .get_frontend = dib3000mb_get_frontend,
 771         .get_tune_settings = dib3000mb_fe_get_tune_settings,
 772
 773         .read_status = dib3000mb_read_status,
 774         .read_ber = dib3000mb_read_ber,
 775         .read_signal_strength = dib3000mb_read_signal_strength,
 776         .read_snr = dib3000mb_read_snr,
 777         .read_ucblocks = dib3000mb_read_unc_blocks,
 778 };
 779
 780 MODULE_AUTHOR(DRIVER_AUTHOR);
 781 MODULE_DESCRIPTION(DRIVER_DESC);
 782 MODULE_LICENSE("GPL");
 783
 784 EXPORT_SYMBOL(dib3000mb_attach);