git.oblomov.eu Git - linux-2.6/blob - 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/kernel.h>
  25 #include <linux/module.h>
  26 #include <linux/moduleparam.h>
  27 #include <linux/init.h>
  28 #include <linux/delay.h>
  29 #include <linux/string.h>
  30 #include <linux/slab.h>
  31
  32 #include "dvb_frontend.h"
  33
  34 #include "dib3000.h"
  35 #include "dib3000mb_priv.h"
  36
  37 /* Version information */
  38 #define DRIVER_VERSION "0.1"
  39 #define DRIVER_DESC "DiBcom 3000M-B DVB-T demodulator"
  40 #define DRIVER_AUTHOR "Patrick Boettcher, patrick.boettcher@desy.de"
  41
  42 #ifdef CONFIG_DVB_DIBCOM_DEBUG
  43 static int debug;
  44 module_param(debug, int, 0644);
  45 MODULE_PARM_DESC(debug, "set debugging level (1=info,2=xfer,4=setfe,8=getfe (|-able)).");
  46 #endif
  47 #define deb_info(args...) dprintk(0x01,args)
  48 #define deb_i2c(args...)  dprintk(0x02,args)
  49 #define deb_srch(args...) dprintk(0x04,args)
  50 #define deb_info(args...) dprintk(0x01,args)
  51 #define deb_xfer(args...) dprintk(0x02,args)
  52 #define deb_setf(args...) dprintk(0x04,args)
  53 #define deb_getf(args...) dprintk(0x08,args)
  54
  55 #ifdef CONFIG_DVB_DIBCOM_DEBUG
  56 static int debug;
  57 module_param(debug, int, 0644);
  58 MODULE_PARM_DESC(debug, "set debugging level (1=info,2=i2c,4=srch (|-able)).");
  59 #endif
  60
  61 static int dib3000_read_reg(struct dib3000_state *state, u16 reg)
  62 {
  63         u8 wb[] = { ((reg >> 8) | 0x80) & 0xff, reg & 0xff };
  64         u8 rb[2];
  65         struct i2c_msg msg[] = {
  66                 { .addr = state->config.demod_address, .flags = 0,        .buf = wb, .len = 2 },
  67                 { .addr = state->config.demod_address, .flags = I2C_M_RD, .buf = rb, .len = 2 },
  68         };
  69
  70         if (i2c_transfer(state->i2c, msg, 2) != 2)
  71                 deb_i2c("i2c read error\n");
  72
  73         deb_i2c("reading i2c bus (reg: %5d 0x%04x, val: %5d 0x%04x)\n",reg,reg,
  74                         (rb[0] << 8) | rb[1],(rb[0] << 8) | rb[1]);
  75
  76         return (rb[0] << 8) | rb[1];
  77 }
  78
  79 static int dib3000_write_reg(struct dib3000_state *state, u16 reg, u16 val)
  80 {
  81         u8 b[] = {
  82                 (reg >> 8) & 0xff, reg & 0xff,
  83                 (val >> 8) & 0xff, val & 0xff,
  84         };
  85         struct i2c_msg msg[] = {
  86                 { .addr = state->config.demod_address, .flags = 0, .buf = b, .len = 4 }
  87         };
  88         deb_i2c("writing i2c bus (reg: %5d 0x%04x, val: %5d 0x%04x)\n",reg,reg,val,val);
  89
  90         return i2c_transfer(state->i2c,msg, 1) != 1 ? -EREMOTEIO : 0;
  91 }
  92
  93 static int dib3000_search_status(u16 irq,u16 lock)
  94 {
  95         if (irq & 0x02) {
  96                 if (lock & 0x01) {
  97                         deb_srch("auto search succeeded\n");
  98                         return 1; // auto search succeeded
  99                 } else {
 100                         deb_srch("auto search not successful\n");
 101                         return 0; // auto search failed
 102                 }
 103         } else if (irq & 0x01)  {
 104                 deb_srch("auto search failed\n");
 105                 return 0; // auto search failed
 106         }
 107         return -1; // try again
 108 }
 109
 110 /* for auto search */
 111 static u16 dib3000_seq[2][2][2] =     /* fft,gua,   inv   */
 112         { /* fft */
 113                 { /* gua */
 114                         { 0, 1 },                   /*  0   0   { 0,1 } */
 115                         { 3, 9 },                   /*  0   1   { 0,1 } */
 116                 },
 117                 {
 118                         { 2, 5 },                   /*  1   0   { 0,1 } */
 119                         { 6, 11 },                  /*  1   1   { 0,1 } */
 120                 }
 121         };
 122
 123 static int dib3000mb_get_frontend(struct dvb_frontend* fe,
 124                                   struct dvb_frontend_parameters *fep);
 125
 126 static int dib3000mb_set_frontend(struct dvb_frontend* fe,
 127                                   struct dvb_frontend_parameters *fep, int tuner)
 128 {
 129         struct dib3000_state* state = fe->demodulator_priv;
 130         struct dvb_ofdm_parameters *ofdm = &fep->u.ofdm;
 131         fe_code_rate_t fe_cr = FEC_NONE;
 132         int search_state, seq;
 133
 134         if (tuner && fe->ops.tuner_ops.set_params) {
 135                 fe->ops.tuner_ops.set_params(fe, fep);
 136                 if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0);
 137
 138                 deb_setf("bandwidth: ");
 139                 switch (ofdm->bandwidth) {
 140                         case BANDWIDTH_8_MHZ:
 141                                 deb_setf("8 MHz\n");
 142                                 wr_foreach(dib3000mb_reg_timing_freq, dib3000mb_timing_freq[2]);
 143                                 wr_foreach(dib3000mb_reg_bandwidth, dib3000mb_bandwidth_8mhz);
 144                                 break;
 145                         case BANDWIDTH_7_MHZ:
 146                                 deb_setf("7 MHz\n");
 147                                 wr_foreach(dib3000mb_reg_timing_freq, dib3000mb_timing_freq[1]);
 148                                 wr_foreach(dib3000mb_reg_bandwidth, dib3000mb_bandwidth_7mhz);
 149                                 break;
 150                         case BANDWIDTH_6_MHZ:
 151                                 deb_setf("6 MHz\n");
 152                                 wr_foreach(dib3000mb_reg_timing_freq, dib3000mb_timing_freq[0]);
 153                                 wr_foreach(dib3000mb_reg_bandwidth, dib3000mb_bandwidth_6mhz);
 154                                 break;
 155                         case BANDWIDTH_AUTO:
 156                                 return -EOPNOTSUPP;
 157                         default:
 158                                 err("unkown bandwidth value.");
 159                                 return -EINVAL;
 160                 }
 161         }
 162         wr(DIB3000MB_REG_LOCK1_MASK, DIB3000MB_LOCK1_SEARCH_4);
 163
 164         deb_setf("transmission mode: ");
 165         switch (ofdm->transmission_mode) {
 166                 case TRANSMISSION_MODE_2K:
 167                         deb_setf("2k\n");
 168                         wr(DIB3000MB_REG_FFT, DIB3000_TRANSMISSION_MODE_2K);
 169                         break;
 170                 case TRANSMISSION_MODE_8K:
 171                         deb_setf("8k\n");
 172                         wr(DIB3000MB_REG_FFT, DIB3000_TRANSMISSION_MODE_8K);
 173                         break;
 174                 case TRANSMISSION_MODE_AUTO:
 175                         deb_setf("auto\n");
 176                         break;
 177                 default:
 178                         return -EINVAL;
 179         }
 180
 181         deb_setf("guard: ");
 182         switch (ofdm->guard_interval) {
 183                 case GUARD_INTERVAL_1_32:
 184                         deb_setf("1_32\n");
 185                         wr(DIB3000MB_REG_GUARD_TIME, DIB3000_GUARD_TIME_1_32);
 186                         break;
 187                 case GUARD_INTERVAL_1_16:
 188                         deb_setf("1_16\n");
 189                         wr(DIB3000MB_REG_GUARD_TIME, DIB3000_GUARD_TIME_1_16);
 190                         break;
 191                 case GUARD_INTERVAL_1_8:
 192                         deb_setf("1_8\n");
 193                         wr(DIB3000MB_REG_GUARD_TIME, DIB3000_GUARD_TIME_1_8);
 194                         break;
 195                 case GUARD_INTERVAL_1_4:
 196                         deb_setf("1_4\n");
 197                         wr(DIB3000MB_REG_GUARD_TIME, DIB3000_GUARD_TIME_1_4);
 198                         break;
 199                 case GUARD_INTERVAL_AUTO:
 200                         deb_setf("auto\n");
 201                         break;
 202                 default:
 203                         return -EINVAL;
 204         }
 205
 206         deb_setf("inversion: ");
 207         switch (fep->inversion) {
 208                 case INVERSION_OFF:
 209                         deb_setf("off\n");
 210                         wr(DIB3000MB_REG_DDS_INV, DIB3000_DDS_INVERSION_OFF);
 211                         break;
 212                 case INVERSION_AUTO:
 213                         deb_setf("auto ");
 214                         break;
 215                 case INVERSION_ON:
 216                         deb_setf("on\n");
 217                         wr(DIB3000MB_REG_DDS_INV, DIB3000_DDS_INVERSION_ON);
 218                         break;
 219                 default:
 220                         return -EINVAL;
 221         }
 222
 223         deb_setf("constellation: ");
 224         switch (ofdm->constellation) {
 225                 case QPSK:
 226                         deb_setf("qpsk\n");
 227                         wr(DIB3000MB_REG_QAM, DIB3000_CONSTELLATION_QPSK);
 228                         break;
 229                 case QAM_16:
 230                         deb_setf("qam16\n");
 231                         wr(DIB3000MB_REG_QAM, DIB3000_CONSTELLATION_16QAM);
 232                         break;
 233                 case QAM_64:
 234                         deb_setf("qam64\n");
 235                         wr(DIB3000MB_REG_QAM, DIB3000_CONSTELLATION_64QAM);
 236                         break;
 237                 case QAM_AUTO:
 238                         break;
 239                 default:
 240                         return -EINVAL;
 241         }
 242         deb_setf("hierarchy: ");
 243         switch (ofdm->hierarchy_information) {
 244                 case HIERARCHY_NONE:
 245                         deb_setf("none ");
 246                         /* fall through */
 247                 case HIERARCHY_1:
 248                         deb_setf("alpha=1\n");
 249                         wr(DIB3000MB_REG_VIT_ALPHA, DIB3000_ALPHA_1);
 250                         break;
 251                 case HIERARCHY_2:
 252                         deb_setf("alpha=2\n");
 253                         wr(DIB3000MB_REG_VIT_ALPHA, DIB3000_ALPHA_2);
 254                         break;
 255                 case HIERARCHY_4:
 256                         deb_setf("alpha=4\n");
 257                         wr(DIB3000MB_REG_VIT_ALPHA, DIB3000_ALPHA_4);
 258                         break;
 259                 case HIERARCHY_AUTO:
 260                         deb_setf("alpha=auto\n");
 261                         break;
 262                 default:
 263                         return -EINVAL;
 264         }
 265
 266         deb_setf("hierarchy: ");
 267         if (ofdm->hierarchy_information == HIERARCHY_NONE) {
 268                 deb_setf("none\n");
 269                 wr(DIB3000MB_REG_VIT_HRCH, DIB3000_HRCH_OFF);
 270                 wr(DIB3000MB_REG_VIT_HP, DIB3000_SELECT_HP);
 271                 fe_cr = ofdm->code_rate_HP;
 272         } else if (ofdm->hierarchy_information != HIERARCHY_AUTO) {
 273                 deb_setf("on\n");
 274                 wr(DIB3000MB_REG_VIT_HRCH, DIB3000_HRCH_ON);
 275                 wr(DIB3000MB_REG_VIT_HP, DIB3000_SELECT_LP);
 276                 fe_cr = ofdm->code_rate_LP;
 277         }
 278         deb_setf("fec: ");
 279         switch (fe_cr) {
 280                 case FEC_1_2:
 281                         deb_setf("1_2\n");
 282                         wr(DIB3000MB_REG_VIT_CODE_RATE, DIB3000_FEC_1_2);
 283                         break;
 284                 case FEC_2_3:
 285                         deb_setf("2_3\n");
 286                         wr(DIB3000MB_REG_VIT_CODE_RATE, DIB3000_FEC_2_3);
 287                         break;
 288                 case FEC_3_4:
 289                         deb_setf("3_4\n");
 290                         wr(DIB3000MB_REG_VIT_CODE_RATE, DIB3000_FEC_3_4);
 291                         break;
 292                 case FEC_5_6:
 293                         deb_setf("5_6\n");
 294                         wr(DIB3000MB_REG_VIT_CODE_RATE, DIB3000_FEC_5_6);
 295                         break;
 296                 case FEC_7_8:
 297                         deb_setf("7_8\n");
 298                         wr(DIB3000MB_REG_VIT_CODE_RATE, DIB3000_FEC_7_8);
 299                         break;
 300                 case FEC_NONE:
 301                         deb_setf("none ");
 302                         break;
 303                 case FEC_AUTO:
 304                         deb_setf("auto\n");
 305                         break;
 306                 default:
 307                         return -EINVAL;
 308         }
 309
 310         seq = dib3000_seq
 311                 [ofdm->transmission_mode == TRANSMISSION_MODE_AUTO]
 312                 [ofdm->guard_interval == GUARD_INTERVAL_AUTO]
 313                 [fep->inversion == INVERSION_AUTO];
 314
 315         deb_setf("seq? %d\n", seq);
 316
 317         wr(DIB3000MB_REG_SEQ, seq);
 318
 319         wr(DIB3000MB_REG_ISI, seq ? DIB3000MB_ISI_INHIBIT : DIB3000MB_ISI_ACTIVATE);
 320
 321         if (ofdm->transmission_mode == TRANSMISSION_MODE_2K) {
 322                 if (ofdm->guard_interval == GUARD_INTERVAL_1_8) {
 323                         wr(DIB3000MB_REG_SYNC_IMPROVEMENT, DIB3000MB_SYNC_IMPROVE_2K_1_8);
 324                 } else {
 325                         wr(DIB3000MB_REG_SYNC_IMPROVEMENT, DIB3000MB_SYNC_IMPROVE_DEFAULT);
 326                 }
 327
 328                 wr(DIB3000MB_REG_UNK_121, DIB3000MB_UNK_121_2K);
 329         } else {
 330                 wr(DIB3000MB_REG_UNK_121, DIB3000MB_UNK_121_DEFAULT);
 331         }
 332
 333         wr(DIB3000MB_REG_MOBILE_ALGO, DIB3000MB_MOBILE_ALGO_OFF);
 334         wr(DIB3000MB_REG_MOBILE_MODE_QAM, DIB3000MB_MOBILE_MODE_QAM_OFF);
 335         wr(DIB3000MB_REG_MOBILE_MODE, DIB3000MB_MOBILE_MODE_OFF);
 336
 337         wr_foreach(dib3000mb_reg_agc_bandwidth, dib3000mb_agc_bandwidth_high);
 338
 339         wr(DIB3000MB_REG_ISI, DIB3000MB_ISI_ACTIVATE);
 340
 341         wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_AGC + DIB3000MB_RESTART_CTRL);
 342         wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_OFF);
 343
 344         /* wait for AGC lock */
 345         msleep(70);
 346
 347         wr_foreach(dib3000mb_reg_agc_bandwidth, dib3000mb_agc_bandwidth_low);
 348
 349         /* something has to be auto searched */
 350         if (ofdm->constellation == QAM_AUTO ||
 351                 ofdm->hierarchy_information == HIERARCHY_AUTO ||
 352                 fe_cr == FEC_AUTO ||
 353                 fep->inversion == INVERSION_AUTO) {
 354                 int as_count=0;
 355
 356                 deb_setf("autosearch enabled.\n");
 357
 358                 wr(DIB3000MB_REG_ISI, DIB3000MB_ISI_INHIBIT);
 359
 360                 wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_AUTO_SEARCH);
 361                 wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_OFF);
 362
 363                 while ((search_state =
 364                                 dib3000_search_status(
 365                                         rd(DIB3000MB_REG_AS_IRQ_PENDING),
 366                                         rd(DIB3000MB_REG_LOCK2_VALUE))) < 0 && as_count++ < 100)
 367                         msleep(1);
 368
 369                 deb_setf("search_state after autosearch %d after %d checks\n",search_state,as_count);
 370
 371                 if (search_state == 1) {
 372                         struct dvb_frontend_parameters feps;
 373                         if (dib3000mb_get_frontend(fe, &feps) == 0) {
 374                                 deb_setf("reading tuning data from frontend succeeded.\n");
 375                                 return dib3000mb_set_frontend(fe, &feps, 0);
 376                         }
 377                 }
 378
 379         } else {
 380                 wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_CTRL);
 381                 wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_OFF);
 382         }
 383
 384         return 0;
 385 }
 386
 387 static int dib3000mb_fe_init(struct dvb_frontend* fe, int mobile_mode)
 388 {
 389         struct dib3000_state* state = fe->demodulator_priv;
 390
 391         deb_info("dib3000mb is getting up.\n");
 392         wr(DIB3000MB_REG_POWER_CONTROL, DIB3000MB_POWER_UP);
 393
 394         wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_AGC);
 395
 396         wr(DIB3000MB_REG_RESET_DEVICE, DIB3000MB_RESET_DEVICE);
 397         wr(DIB3000MB_REG_RESET_DEVICE, DIB3000MB_RESET_DEVICE_RST);
 398
 399         wr(DIB3000MB_REG_CLOCK, DIB3000MB_CLOCK_DEFAULT);
 400
 401         wr(DIB3000MB_REG_ELECT_OUT_MODE, DIB3000MB_ELECT_OUT_MODE_ON);
 402
 403         wr(DIB3000MB_REG_DDS_FREQ_MSB, DIB3000MB_DDS_FREQ_MSB);
 404         wr(DIB3000MB_REG_DDS_FREQ_LSB, DIB3000MB_DDS_FREQ_LSB);
 405
 406         wr_foreach(dib3000mb_reg_timing_freq, dib3000mb_timing_freq[2]);
 407
 408         wr_foreach(dib3000mb_reg_impulse_noise,
 409                         dib3000mb_impulse_noise_values[DIB3000MB_IMPNOISE_OFF]);
 410
 411         wr_foreach(dib3000mb_reg_agc_gain, dib3000mb_default_agc_gain);
 412
 413         wr(DIB3000MB_REG_PHASE_NOISE, DIB3000MB_PHASE_NOISE_DEFAULT);
 414
 415         wr_foreach(dib3000mb_reg_phase_noise, dib3000mb_default_noise_phase);
 416
 417         wr_foreach(dib3000mb_reg_lock_duration, dib3000mb_default_lock_duration);
 418
 419         wr_foreach(dib3000mb_reg_agc_bandwidth, dib3000mb_agc_bandwidth_low);
 420
 421         wr(DIB3000MB_REG_LOCK0_MASK, DIB3000MB_LOCK0_DEFAULT);
 422         wr(DIB3000MB_REG_LOCK1_MASK, DIB3000MB_LOCK1_SEARCH_4);
 423         wr(DIB3000MB_REG_LOCK2_MASK, DIB3000MB_LOCK2_DEFAULT);
 424         wr(DIB3000MB_REG_SEQ, dib3000_seq[1][1][1]);
 425
 426         wr_foreach(dib3000mb_reg_bandwidth, dib3000mb_bandwidth_8mhz);
 427
 428         wr(DIB3000MB_REG_UNK_68, DIB3000MB_UNK_68);
 429         wr(DIB3000MB_REG_UNK_69, DIB3000MB_UNK_69);
 430         wr(DIB3000MB_REG_UNK_71, DIB3000MB_UNK_71);
 431         wr(DIB3000MB_REG_UNK_77, DIB3000MB_UNK_77);
 432         wr(DIB3000MB_REG_UNK_78, DIB3000MB_UNK_78);
 433         wr(DIB3000MB_REG_ISI, DIB3000MB_ISI_INHIBIT);
 434         wr(DIB3000MB_REG_UNK_92, DIB3000MB_UNK_92);
 435         wr(DIB3000MB_REG_UNK_96, DIB3000MB_UNK_96);
 436         wr(DIB3000MB_REG_UNK_97, DIB3000MB_UNK_97);
 437         wr(DIB3000MB_REG_UNK_106, DIB3000MB_UNK_106);
 438         wr(DIB3000MB_REG_UNK_107, DIB3000MB_UNK_107);
 439         wr(DIB3000MB_REG_UNK_108, DIB3000MB_UNK_108);
 440         wr(DIB3000MB_REG_UNK_122, DIB3000MB_UNK_122);
 441         wr(DIB3000MB_REG_MOBILE_MODE_QAM, DIB3000MB_MOBILE_MODE_QAM_OFF);
 442         wr(DIB3000MB_REG_BERLEN, DIB3000MB_BERLEN_DEFAULT);
 443
 444         wr_foreach(dib3000mb_reg_filter_coeffs, dib3000mb_filter_coeffs);
 445
 446         wr(DIB3000MB_REG_MOBILE_ALGO, DIB3000MB_MOBILE_ALGO_ON);
 447         wr(DIB3000MB_REG_MULTI_DEMOD_MSB, DIB3000MB_MULTI_DEMOD_MSB);
 448         wr(DIB3000MB_REG_MULTI_DEMOD_LSB, DIB3000MB_MULTI_DEMOD_LSB);
 449
 450         wr(DIB3000MB_REG_OUTPUT_MODE, DIB3000MB_OUTPUT_MODE_SLAVE);
 451
 452         wr(DIB3000MB_REG_FIFO_142, DIB3000MB_FIFO_142);
 453         wr(DIB3000MB_REG_MPEG2_OUT_MODE, DIB3000MB_MPEG2_OUT_MODE_188);
 454         wr(DIB3000MB_REG_PID_PARSE, DIB3000MB_PID_PARSE_ACTIVATE);
 455         wr(DIB3000MB_REG_FIFO, DIB3000MB_FIFO_INHIBIT);
 456         wr(DIB3000MB_REG_FIFO_146, DIB3000MB_FIFO_146);
 457         wr(DIB3000MB_REG_FIFO_147, DIB3000MB_FIFO_147);
 458
 459         wr(DIB3000MB_REG_DATA_IN_DIVERSITY, DIB3000MB_DATA_DIVERSITY_IN_OFF);
 460
 461         return 0;
 462 }
 463
 464 static int dib3000mb_get_frontend(struct dvb_frontend* fe,
 465                                   struct dvb_frontend_parameters *fep)
 466 {
 467         struct dib3000_state* state = fe->demodulator_priv;
 468         struct dvb_ofdm_parameters *ofdm = &fep->u.ofdm;
 469         fe_code_rate_t *cr;
 470         u16 tps_val;
 471         int inv_test1,inv_test2;
 472         u32 dds_val, threshold = 0x800000;
 473
 474         if (!rd(DIB3000MB_REG_TPS_LOCK))
 475                 return 0;
 476
 477         dds_val = ((rd(DIB3000MB_REG_DDS_VALUE_MSB) & 0xff) << 16) + rd(DIB3000MB_REG_DDS_VALUE_LSB);
 478         deb_getf("DDS_VAL: %x %x %x",dds_val, rd(DIB3000MB_REG_DDS_VALUE_MSB), rd(DIB3000MB_REG_DDS_VALUE_LSB));
 479         if (dds_val < threshold)
 480                 inv_test1 = 0;
 481         else if (dds_val == threshold)
 482                 inv_test1 = 1;
 483         else
 484                 inv_test1 = 2;
 485
 486         dds_val = ((rd(DIB3000MB_REG_DDS_FREQ_MSB) & 0xff) << 16) + rd(DIB3000MB_REG_DDS_FREQ_LSB);
 487         deb_getf("DDS_FREQ: %x %x %x",dds_val, rd(DIB3000MB_REG_DDS_FREQ_MSB), rd(DIB3000MB_REG_DDS_FREQ_LSB));
 488         if (dds_val < threshold)
 489                 inv_test2 = 0;
 490         else if (dds_val == threshold)
 491                 inv_test2 = 1;
 492         else
 493                 inv_test2 = 2;
 494
 495         fep->inversion =
 496                 ((inv_test2 == 2) && (inv_test1==1 || inv_test1==0)) ||
 497                 ((inv_test2 == 0) && (inv_test1==1 || inv_test1==2)) ?
 498                 INVERSION_ON : INVERSION_OFF;
 499
 500         deb_getf("inversion %d %d, %d\n", inv_test2, inv_test1, fep->inversion);
 501
 502         switch ((tps_val = rd(DIB3000MB_REG_TPS_QAM))) {
 503                 case DIB3000_CONSTELLATION_QPSK:
 504                         deb_getf("QPSK ");
 505                         ofdm->constellation = QPSK;
 506                         break;
 507                 case DIB3000_CONSTELLATION_16QAM:
 508                         deb_getf("QAM16 ");
 509                         ofdm->constellation = QAM_16;
 510                         break;
 511                 case DIB3000_CONSTELLATION_64QAM:
 512                         deb_getf("QAM64 ");
 513                         ofdm->constellation = QAM_64;
 514                         break;
 515                 default:
 516                         err("Unexpected constellation returned by TPS (%d)", tps_val);
 517                         break;
 518         }
 519         deb_getf("TPS: %d\n", tps_val);
 520
 521         if (rd(DIB3000MB_REG_TPS_HRCH)) {
 522                 deb_getf("HRCH ON\n");
 523                 cr = &ofdm->code_rate_LP;
 524                 ofdm->code_rate_HP = FEC_NONE;
 525                 switch ((tps_val = rd(DIB3000MB_REG_TPS_VIT_ALPHA))) {
 526                         case DIB3000_ALPHA_0:
 527                                 deb_getf("HIERARCHY_NONE ");
 528                                 ofdm->hierarchy_information = HIERARCHY_NONE;
 529                                 break;
 530                         case DIB3000_ALPHA_1:
 531                                 deb_getf("HIERARCHY_1 ");
 532                                 ofdm->hierarchy_information = HIERARCHY_1;
 533                                 break;
 534                         case DIB3000_ALPHA_2:
 535                                 deb_getf("HIERARCHY_2 ");
 536                                 ofdm->hierarchy_information = HIERARCHY_2;
 537                                 break;
 538                         case DIB3000_ALPHA_4:
 539                                 deb_getf("HIERARCHY_4 ");
 540                                 ofdm->hierarchy_information = HIERARCHY_4;
 541                                 break;
 542                         default:
 543                                 err("Unexpected ALPHA value returned by TPS (%d)", tps_val);
 544                                 break;
 545                 }
 546                 deb_getf("TPS: %d\n", tps_val);
 547
 548                 tps_val = rd(DIB3000MB_REG_TPS_CODE_RATE_LP);
 549         } else {
 550                 deb_getf("HRCH OFF\n");
 551                 cr = &ofdm->code_rate_HP;
 552                 ofdm->code_rate_LP = FEC_NONE;
 553                 ofdm->hierarchy_information = HIERARCHY_NONE;
 554
 555                 tps_val = rd(DIB3000MB_REG_TPS_CODE_RATE_HP);
 556         }
 557
 558         switch (tps_val) {
 559                 case DIB3000_FEC_1_2:
 560                         deb_getf("FEC_1_2 ");
 561                         *cr = FEC_1_2;
 562                         break;
 563                 case DIB3000_FEC_2_3:
 564                         deb_getf("FEC_2_3 ");
 565                         *cr = FEC_2_3;
 566                         break;
 567                 case DIB3000_FEC_3_4:
 568                         deb_getf("FEC_3_4 ");
 569                         *cr = FEC_3_4;
 570                         break;
 571                 case DIB3000_FEC_5_6:
 572                         deb_getf("FEC_5_6 ");
 573                         *cr = FEC_4_5;
 574                         break;
 575                 case DIB3000_FEC_7_8:
 576                         deb_getf("FEC_7_8 ");
 577                         *cr = FEC_7_8;
 578                         break;
 579                 default:
 580                         err("Unexpected FEC returned by TPS (%d)", tps_val);
 581                         break;
 582         }
 583         deb_getf("TPS: %d\n",tps_val);
 584
 585         switch ((tps_val = rd(DIB3000MB_REG_TPS_GUARD_TIME))) {
 586                 case DIB3000_GUARD_TIME_1_32:
 587                         deb_getf("GUARD_INTERVAL_1_32 ");
 588                         ofdm->guard_interval = GUARD_INTERVAL_1_32;
 589                         break;
 590                 case DIB3000_GUARD_TIME_1_16:
 591                         deb_getf("GUARD_INTERVAL_1_16 ");
 592                         ofdm->guard_interval = GUARD_INTERVAL_1_16;
 593                         break;
 594                 case DIB3000_GUARD_TIME_1_8:
 595                         deb_getf("GUARD_INTERVAL_1_8 ");
 596                         ofdm->guard_interval = GUARD_INTERVAL_1_8;
 597                         break;
 598                 case DIB3000_GUARD_TIME_1_4:
 599                         deb_getf("GUARD_INTERVAL_1_4 ");
 600                         ofdm->guard_interval = GUARD_INTERVAL_1_4;
 601                         break;
 602                 default:
 603                         err("Unexpected Guard Time returned by TPS (%d)", tps_val);
 604                         break;
 605         }
 606         deb_getf("TPS: %d\n", tps_val);
 607
 608         switch ((tps_val = rd(DIB3000MB_REG_TPS_FFT))) {
 609                 case DIB3000_TRANSMISSION_MODE_2K:
 610                         deb_getf("TRANSMISSION_MODE_2K ");
 611                         ofdm->transmission_mode = TRANSMISSION_MODE_2K;
 612                         break;
 613                 case DIB3000_TRANSMISSION_MODE_8K:
 614                         deb_getf("TRANSMISSION_MODE_8K ");
 615                         ofdm->transmission_mode = TRANSMISSION_MODE_8K;
 616                         break;
 617                 default:
 618                         err("unexpected transmission mode return by TPS (%d)", tps_val);
 619                         break;
 620         }
 621         deb_getf("TPS: %d\n", tps_val);
 622
 623         return 0;
 624 }
 625
 626 static int dib3000mb_read_status(struct dvb_frontend* fe, fe_status_t *stat)
 627 {
 628         struct dib3000_state* state = fe->demodulator_priv;
 629
 630         *stat = 0;
 631
 632         if (rd(DIB3000MB_REG_AGC_LOCK))
 633                 *stat |= FE_HAS_SIGNAL;
 634         if (rd(DIB3000MB_REG_CARRIER_LOCK))
 635                 *stat |= FE_HAS_CARRIER;
 636         if (rd(DIB3000MB_REG_VIT_LCK))
 637                 *stat |= FE_HAS_VITERBI;
 638         if (rd(DIB3000MB_REG_TS_SYNC_LOCK))
 639                 *stat |= (FE_HAS_SYNC | FE_HAS_LOCK);
 640
 641         deb_getf("actual status is %2x\n",*stat);
 642
 643         deb_getf("autoval: tps: %d, qam: %d, hrch: %d, alpha: %d, hp: %d, lp: %d, guard: %d, fft: %d cell: %d\n",
 644                         rd(DIB3000MB_REG_TPS_LOCK),
 645                         rd(DIB3000MB_REG_TPS_QAM),
 646                         rd(DIB3000MB_REG_TPS_HRCH),
 647                         rd(DIB3000MB_REG_TPS_VIT_ALPHA),
 648                         rd(DIB3000MB_REG_TPS_CODE_RATE_HP),
 649                         rd(DIB3000MB_REG_TPS_CODE_RATE_LP),
 650                         rd(DIB3000MB_REG_TPS_GUARD_TIME),
 651                         rd(DIB3000MB_REG_TPS_FFT),
 652                         rd(DIB3000MB_REG_TPS_CELL_ID));
 653
 654         //*stat = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK;
 655         return 0;
 656 }
 657
 658 static int dib3000mb_read_ber(struct dvb_frontend* fe, u32 *ber)
 659 {
 660         struct dib3000_state* state = fe->demodulator_priv;
 661
 662         *ber = ((rd(DIB3000MB_REG_BER_MSB) << 16) | rd(DIB3000MB_REG_BER_LSB));
 663         return 0;
 664 }
 665
 666 /* see dib3000-watch dvb-apps for exact calcuations of signal_strength and snr */
 667 static int dib3000mb_read_signal_strength(struct dvb_frontend* fe, u16 *strength)
 668 {
 669         struct dib3000_state* state = fe->demodulator_priv;
 670
 671         *strength = rd(DIB3000MB_REG_SIGNAL_POWER) * 0xffff / 0x170;
 672         return 0;
 673 }
 674
 675 static int dib3000mb_read_snr(struct dvb_frontend* fe, u16 *snr)
 676 {
 677         struct dib3000_state* state = fe->demodulator_priv;
 678         short sigpow = rd(DIB3000MB_REG_SIGNAL_POWER);
 679         int icipow = ((rd(DIB3000MB_REG_NOISE_POWER_MSB) & 0xff) << 16) |
 680                 rd(DIB3000MB_REG_NOISE_POWER_LSB);
 681         *snr = (sigpow << 8) / ((icipow > 0) ? icipow : 1);
 682         return 0;
 683 }
 684
 685 static int dib3000mb_read_unc_blocks(struct dvb_frontend* fe, u32 *unc)
 686 {
 687         struct dib3000_state* state = fe->demodulator_priv;
 688
 689         *unc = rd(DIB3000MB_REG_PACKET_ERROR_RATE);
 690         return 0;
 691 }
 692
 693 static int dib3000mb_sleep(struct dvb_frontend* fe)
 694 {
 695         struct dib3000_state* state = fe->demodulator_priv;
 696         deb_info("dib3000mb is going to bed.\n");
 697         wr(DIB3000MB_REG_POWER_CONTROL, DIB3000MB_POWER_DOWN);
 698         return 0;
 699 }
 700
 701 static int dib3000mb_fe_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings *tune)
 702 {
 703         tune->min_delay_ms = 800;
 704         return 0;
 705 }
 706
 707 static int dib3000mb_fe_init_nonmobile(struct dvb_frontend* fe)
 708 {
 709         return dib3000mb_fe_init(fe, 0);
 710 }
 711
 712 static int dib3000mb_set_frontend_and_tuner(struct dvb_frontend* fe, struct dvb_frontend_parameters *fep)
 713 {
 714         return dib3000mb_set_frontend(fe, fep, 1);
 715 }
 716
 717 static void dib3000mb_release(struct dvb_frontend* fe)
 718 {
 719         struct dib3000_state *state = fe->demodulator_priv;
 720         kfree(state);
 721 }
 722
 723 /* pid filter and transfer stuff */
 724 static int dib3000mb_pid_control(struct dvb_frontend *fe,int index, int pid,int onoff)
 725 {
 726         struct dib3000_state *state = fe->demodulator_priv;
 727         pid = (onoff ? pid | DIB3000_ACTIVATE_PID_FILTERING : 0);
 728         wr(index+DIB3000MB_REG_FIRST_PID,pid);
 729         return 0;
 730 }
 731
 732 static int dib3000mb_fifo_control(struct dvb_frontend *fe, int onoff)
 733 {
 734         struct dib3000_state *state = fe->demodulator_priv;
 735
 736         deb_xfer("%s fifo\n",onoff ? "enabling" : "disabling");
 737         if (onoff) {
 738                 wr(DIB3000MB_REG_FIFO, DIB3000MB_FIFO_ACTIVATE);
 739         } else {
 740                 wr(DIB3000MB_REG_FIFO, DIB3000MB_FIFO_INHIBIT);
 741         }
 742         return 0;
 743 }
 744
 745 static int dib3000mb_pid_parse(struct dvb_frontend *fe, int onoff)
 746 {
 747         struct dib3000_state *state = fe->demodulator_priv;
 748         deb_xfer("%s pid parsing\n",onoff ? "enabling" : "disabling");
 749         wr(DIB3000MB_REG_PID_PARSE,onoff);
 750         return 0;
 751 }
 752
 753 static int dib3000mb_tuner_pass_ctrl(struct dvb_frontend *fe, int onoff, u8 pll_addr)
 754 {
 755         struct dib3000_state *state = fe->demodulator_priv;
 756         if (onoff) {
 757                 wr(DIB3000MB_REG_TUNER, DIB3000_TUNER_WRITE_ENABLE(pll_addr));
 758         } else {
 759                 wr(DIB3000MB_REG_TUNER, DIB3000_TUNER_WRITE_DISABLE(pll_addr));
 760         }
 761         return 0;
 762 }
 763
 764 static struct dvb_frontend_ops dib3000mb_ops;
 765
 766 struct dvb_frontend* dib3000mb_attach(const struct dib3000_config* config,
 767                                       struct i2c_adapter* i2c, struct dib_fe_xfer_ops *xfer_ops)
 768 {
 769         struct dib3000_state* state = NULL;
 770
 771         /* allocate memory for the internal state */
 772         state = kzalloc(sizeof(struct dib3000_state), GFP_KERNEL);
 773         if (state == NULL)
 774                 goto error;
 775
 776         /* setup the state */
 777         state->i2c = i2c;
 778         memcpy(&state->config,config,sizeof(struct dib3000_config));
 779
 780         /* check for the correct demod */
 781         if (rd(DIB3000_REG_MANUFACTOR_ID) != DIB3000_I2C_ID_DIBCOM)
 782                 goto error;
 783
 784         if (rd(DIB3000_REG_DEVICE_ID) != DIB3000MB_DEVICE_ID)
 785                 goto error;
 786
 787         /* create dvb_frontend */
 788         memcpy(&state->frontend.ops, &dib3000mb_ops, sizeof(struct dvb_frontend_ops));
 789         state->frontend.demodulator_priv = state;
 790
 791         /* set the xfer operations */
 792         xfer_ops->pid_parse = dib3000mb_pid_parse;
 793         xfer_ops->fifo_ctrl = dib3000mb_fifo_control;
 794         xfer_ops->pid_ctrl = dib3000mb_pid_control;
 795         xfer_ops->tuner_pass_ctrl = dib3000mb_tuner_pass_ctrl;
 796
 797         return &state->frontend;
 798
 799 error:
 800         kfree(state);
 801         return NULL;
 802 }
 803
 804 static struct dvb_frontend_ops dib3000mb_ops = {
 805
 806         .info = {
 807                 .name                   = "DiBcom 3000M-B DVB-T",
 808                 .type                   = FE_OFDM,
 809                 .frequency_min          = 44250000,
 810                 .frequency_max          = 867250000,
 811                 .frequency_stepsize     = 62500,
 812                 .caps = FE_CAN_INVERSION_AUTO |
 813                                 FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
 814                                 FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
 815                                 FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO |
 816                                 FE_CAN_TRANSMISSION_MODE_AUTO |
 817                                 FE_CAN_GUARD_INTERVAL_AUTO |
 818                                 FE_CAN_RECOVER |
 819                                 FE_CAN_HIERARCHY_AUTO,
 820         },
 821
 822         .release = dib3000mb_release,
 823
 824         .init = dib3000mb_fe_init_nonmobile,
 825         .sleep = dib3000mb_sleep,
 826
 827         .set_frontend = dib3000mb_set_frontend_and_tuner,
 828         .get_frontend = dib3000mb_get_frontend,
 829         .get_tune_settings = dib3000mb_fe_get_tune_settings,
 830
 831         .read_status = dib3000mb_read_status,
 832         .read_ber = dib3000mb_read_ber,
 833         .read_signal_strength = dib3000mb_read_signal_strength,
 834         .read_snr = dib3000mb_read_snr,
 835         .read_ucblocks = dib3000mb_read_unc_blocks,
 836 };
 837
 838 MODULE_AUTHOR(DRIVER_AUTHOR);
 839 MODULE_DESCRIPTION(DRIVER_DESC);
 840 MODULE_LICENSE("GPL");
 841
 842 EXPORT_SYMBOL(dib3000mb_attach);