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.dvb-usb for more information
  21  *
  22  */
  23
  24 #include <linux/kernel.h>
  25 #include <linux/module.h>
  26 #include <linux/init.h>
  27 #include <linux/delay.h>
  28 #include <linux/string.h>
  29 #include <linux/slab.h>
  30
  31 #include "dvb_frontend.h"
  32
  33 #include "dib3000.h"
  34 #include "dib3000mb_priv.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 static int debug;
  42 module_param(debug, int, 0644);
  43 MODULE_PARM_DESC(debug, "set debugging level (1=info,2=xfer,4=setfe,8=getfe (|-able)).");
  44
  45 #define deb_info(args...) dprintk(0x01,args)
  46 #define deb_i2c(args...)  dprintk(0x02,args)
  47 #define deb_srch(args...) dprintk(0x04,args)
  48 #define deb_info(args...) dprintk(0x01,args)
  49 #define deb_xfer(args...) dprintk(0x02,args)
  50 #define deb_setf(args...) dprintk(0x04,args)
  51 #define deb_getf(args...) dprintk(0x08,args)
  52
  53 static int dib3000_read_reg(struct dib3000_state *state, u16 reg)
  54 {
  55         u8 wb[] = { ((reg >> 8) | 0x80) & 0xff, reg & 0xff };
  56         u8 rb[2];
  57         struct i2c_msg msg[] = {
  58                 { .addr = state->config.demod_address, .flags = 0,        .buf = wb, .len = 2 },
  59                 { .addr = state->config.demod_address, .flags = I2C_M_RD, .buf = rb, .len = 2 },
  60         };
  61
  62         if (i2c_transfer(state->i2c, msg, 2) != 2)
  63                 deb_i2c("i2c read error\n");
  64
  65         deb_i2c("reading i2c bus (reg: %5d 0x%04x, val: %5d 0x%04x)\n",reg,reg,
  66                         (rb[0] << 8) | rb[1],(rb[0] << 8) | rb[1]);
  67
  68         return (rb[0] << 8) | rb[1];
  69 }
  70
  71 static int dib3000_write_reg(struct dib3000_state *state, u16 reg, u16 val)
  72 {
  73         u8 b[] = {
  74                 (reg >> 8) & 0xff, reg & 0xff,
  75                 (val >> 8) & 0xff, val & 0xff,
  76         };
  77         struct i2c_msg msg[] = {
  78                 { .addr = state->config.demod_address, .flags = 0, .buf = b, .len = 4 }
  79         };
  80         deb_i2c("writing i2c bus (reg: %5d 0x%04x, val: %5d 0x%04x)\n",reg,reg,val,val);
  81
  82         return i2c_transfer(state->i2c,msg, 1) != 1 ? -EREMOTEIO : 0;
  83 }
  84
  85 static int dib3000_search_status(u16 irq,u16 lock)
  86 {
  87         if (irq & 0x02) {
  88                 if (lock & 0x01) {
  89                         deb_srch("auto search succeeded\n");
  90                         return 1; // auto search succeeded
  91                 } else {
  92                         deb_srch("auto search not successful\n");
  93                         return 0; // auto search failed
  94                 }
  95         } else if (irq & 0x01)  {
  96                 deb_srch("auto search failed\n");
  97                 return 0; // auto search failed
  98         }
  99         return -1; // try again
 100 }
 101
 102 /* for auto search */
 103 static u16 dib3000_seq[2][2][2] =     /* fft,gua,   inv   */
 104         { /* fft */
 105                 { /* gua */
 106                         { 0, 1 },                   /*  0   0   { 0,1 } */
 107                         { 3, 9 },                   /*  0   1   { 0,1 } */
 108                 },
 109                 {
 110                         { 2, 5 },                   /*  1   0   { 0,1 } */
 111                         { 6, 11 },                  /*  1   1   { 0,1 } */
 112                 }
 113         };
 114
 115 static int dib3000mb_get_frontend(struct dvb_frontend* fe,
 116                                   struct dvb_frontend_parameters *fep);
 117
 118 static int dib3000mb_set_frontend(struct dvb_frontend* fe,
 119                                   struct dvb_frontend_parameters *fep, int tuner)
 120 {
 121         struct dib3000_state* state = fe->demodulator_priv;
 122         struct dvb_ofdm_parameters *ofdm = &fep->u.ofdm;
 123         fe_code_rate_t fe_cr = FEC_NONE;
 124         int search_state, seq;
 125
 126         if (tuner && fe->ops.tuner_ops.set_params) {
 127                 fe->ops.tuner_ops.set_params(fe, fep);
 128                 if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0);
 129
 130                 deb_setf("bandwidth: ");
 131                 switch (ofdm->bandwidth) {
 132                         case BANDWIDTH_8_MHZ:
 133                                 deb_setf("8 MHz\n");
 134                                 wr_foreach(dib3000mb_reg_timing_freq, dib3000mb_timing_freq[2]);
 135                                 wr_foreach(dib3000mb_reg_bandwidth, dib3000mb_bandwidth_8mhz);
 136                                 break;
 137                         case BANDWIDTH_7_MHZ:
 138                                 deb_setf("7 MHz\n");
 139                                 wr_foreach(dib3000mb_reg_timing_freq, dib3000mb_timing_freq[1]);
 140                                 wr_foreach(dib3000mb_reg_bandwidth, dib3000mb_bandwidth_7mhz);
 141                                 break;
 142                         case BANDWIDTH_6_MHZ:
 143                                 deb_setf("6 MHz\n");
 144                                 wr_foreach(dib3000mb_reg_timing_freq, dib3000mb_timing_freq[0]);
 145                                 wr_foreach(dib3000mb_reg_bandwidth, dib3000mb_bandwidth_6mhz);
 146                                 break;
 147                         case BANDWIDTH_AUTO:
 148                                 return -EOPNOTSUPP;
 149                         default:
 150                                 err("unknown bandwidth value.");
 151                                 return -EINVAL;
 152                 }
 153         }
 154         wr(DIB3000MB_REG_LOCK1_MASK, DIB3000MB_LOCK1_SEARCH_4);
 155
 156         deb_setf("transmission mode: ");
 157         switch (ofdm->transmission_mode) {
 158                 case TRANSMISSION_MODE_2K:
 159                         deb_setf("2k\n");
 160                         wr(DIB3000MB_REG_FFT, DIB3000_TRANSMISSION_MODE_2K);
 161                         break;
 162                 case TRANSMISSION_MODE_8K:
 163                         deb_setf("8k\n");
 164                         wr(DIB3000MB_REG_FFT, DIB3000_TRANSMISSION_MODE_8K);
 165                         break;
 166                 case TRANSMISSION_MODE_AUTO:
 167                         deb_setf("auto\n");
 168                         break;
 169                 default:
 170                         return -EINVAL;
 171         }
 172
 173         deb_setf("guard: ");
 174         switch (ofdm->guard_interval) {
 175                 case GUARD_INTERVAL_1_32:
 176                         deb_setf("1_32\n");
 177                         wr(DIB3000MB_REG_GUARD_TIME, DIB3000_GUARD_TIME_1_32);
 178                         break;
 179                 case GUARD_INTERVAL_1_16:
 180                         deb_setf("1_16\n");
 181                         wr(DIB3000MB_REG_GUARD_TIME, DIB3000_GUARD_TIME_1_16);
 182                         break;
 183                 case GUARD_INTERVAL_1_8:
 184                         deb_setf("1_8\n");
 185                         wr(DIB3000MB_REG_GUARD_TIME, DIB3000_GUARD_TIME_1_8);
 186                         break;
 187                 case GUARD_INTERVAL_1_4:
 188                         deb_setf("1_4\n");
 189                         wr(DIB3000MB_REG_GUARD_TIME, DIB3000_GUARD_TIME_1_4);
 190                         break;
 191                 case GUARD_INTERVAL_AUTO:
 192                         deb_setf("auto\n");
 193                         break;
 194                 default:
 195                         return -EINVAL;
 196         }
 197
 198         deb_setf("inversion: ");
 199         switch (fep->inversion) {
 200                 case INVERSION_OFF:
 201                         deb_setf("off\n");
 202                         wr(DIB3000MB_REG_DDS_INV, DIB3000_DDS_INVERSION_OFF);
 203                         break;
 204                 case INVERSION_AUTO:
 205                         deb_setf("auto ");
 206                         break;
 207                 case INVERSION_ON:
 208                         deb_setf("on\n");
 209                         wr(DIB3000MB_REG_DDS_INV, DIB3000_DDS_INVERSION_ON);
 210                         break;
 211                 default:
 212                         return -EINVAL;
 213         }
 214
 215         deb_setf("constellation: ");
 216         switch (ofdm->constellation) {
 217                 case QPSK:
 218                         deb_setf("qpsk\n");
 219                         wr(DIB3000MB_REG_QAM, DIB3000_CONSTELLATION_QPSK);
 220                         break;
 221                 case QAM_16:
 222                         deb_setf("qam16\n");
 223                         wr(DIB3000MB_REG_QAM, DIB3000_CONSTELLATION_16QAM);
 224                         break;
 225                 case QAM_64:
 226                         deb_setf("qam64\n");
 227                         wr(DIB3000MB_REG_QAM, DIB3000_CONSTELLATION_64QAM);
 228                         break;
 229                 case QAM_AUTO:
 230                         break;
 231                 default:
 232                         return -EINVAL;
 233         }
 234         deb_setf("hierarchy: ");
 235         switch (ofdm->hierarchy_information) {
 236                 case HIERARCHY_NONE:
 237                         deb_setf("none ");
 238                         /* fall through */
 239                 case HIERARCHY_1:
 240                         deb_setf("alpha=1\n");
 241                         wr(DIB3000MB_REG_VIT_ALPHA, DIB3000_ALPHA_1);
 242                         break;
 243                 case HIERARCHY_2:
 244                         deb_setf("alpha=2\n");
 245                         wr(DIB3000MB_REG_VIT_ALPHA, DIB3000_ALPHA_2);
 246                         break;
 247                 case HIERARCHY_4:
 248                         deb_setf("alpha=4\n");
 249                         wr(DIB3000MB_REG_VIT_ALPHA, DIB3000_ALPHA_4);
 250                         break;
 251                 case HIERARCHY_AUTO:
 252                         deb_setf("alpha=auto\n");
 253                         break;
 254                 default:
 255                         return -EINVAL;
 256         }
 257
 258         deb_setf("hierarchy: ");
 259         if (ofdm->hierarchy_information == HIERARCHY_NONE) {
 260                 deb_setf("none\n");
 261                 wr(DIB3000MB_REG_VIT_HRCH, DIB3000_HRCH_OFF);
 262                 wr(DIB3000MB_REG_VIT_HP, DIB3000_SELECT_HP);
 263                 fe_cr = ofdm->code_rate_HP;
 264         } else if (ofdm->hierarchy_information != HIERARCHY_AUTO) {
 265                 deb_setf("on\n");
 266                 wr(DIB3000MB_REG_VIT_HRCH, DIB3000_HRCH_ON);
 267                 wr(DIB3000MB_REG_VIT_HP, DIB3000_SELECT_LP);
 268                 fe_cr = ofdm->code_rate_LP;
 269         }
 270         deb_setf("fec: ");
 271         switch (fe_cr) {
 272                 case FEC_1_2:
 273                         deb_setf("1_2\n");
 274                         wr(DIB3000MB_REG_VIT_CODE_RATE, DIB3000_FEC_1_2);
 275                         break;
 276                 case FEC_2_3:
 277                         deb_setf("2_3\n");
 278                         wr(DIB3000MB_REG_VIT_CODE_RATE, DIB3000_FEC_2_3);
 279                         break;
 280                 case FEC_3_4:
 281                         deb_setf("3_4\n");
 282                         wr(DIB3000MB_REG_VIT_CODE_RATE, DIB3000_FEC_3_4);
 283                         break;
 284                 case FEC_5_6:
 285                         deb_setf("5_6\n");
 286                         wr(DIB3000MB_REG_VIT_CODE_RATE, DIB3000_FEC_5_6);
 287                         break;
 288                 case FEC_7_8:
 289                         deb_setf("7_8\n");
 290                         wr(DIB3000MB_REG_VIT_CODE_RATE, DIB3000_FEC_7_8);
 291                         break;
 292                 case FEC_NONE:
 293                         deb_setf("none ");
 294                         break;
 295                 case FEC_AUTO:
 296                         deb_setf("auto\n");
 297                         break;
 298                 default:
 299                         return -EINVAL;
 300         }
 301
 302         seq = dib3000_seq
 303                 [ofdm->transmission_mode == TRANSMISSION_MODE_AUTO]
 304                 [ofdm->guard_interval == GUARD_INTERVAL_AUTO]
 305                 [fep->inversion == INVERSION_AUTO];
 306
 307         deb_setf("seq? %d\n", seq);
 308
 309         wr(DIB3000MB_REG_SEQ, seq);
 310
 311         wr(DIB3000MB_REG_ISI, seq ? DIB3000MB_ISI_INHIBIT : DIB3000MB_ISI_ACTIVATE);
 312
 313         if (ofdm->transmission_mode == TRANSMISSION_MODE_2K) {
 314                 if (ofdm->guard_interval == GUARD_INTERVAL_1_8) {
 315                         wr(DIB3000MB_REG_SYNC_IMPROVEMENT, DIB3000MB_SYNC_IMPROVE_2K_1_8);
 316                 } else {
 317                         wr(DIB3000MB_REG_SYNC_IMPROVEMENT, DIB3000MB_SYNC_IMPROVE_DEFAULT);
 318                 }
 319
 320                 wr(DIB3000MB_REG_UNK_121, DIB3000MB_UNK_121_2K);
 321         } else {
 322                 wr(DIB3000MB_REG_UNK_121, DIB3000MB_UNK_121_DEFAULT);
 323         }
 324
 325         wr(DIB3000MB_REG_MOBILE_ALGO, DIB3000MB_MOBILE_ALGO_OFF);
 326         wr(DIB3000MB_REG_MOBILE_MODE_QAM, DIB3000MB_MOBILE_MODE_QAM_OFF);
 327         wr(DIB3000MB_REG_MOBILE_MODE, DIB3000MB_MOBILE_MODE_OFF);
 328
 329         wr_foreach(dib3000mb_reg_agc_bandwidth, dib3000mb_agc_bandwidth_high);
 330
 331         wr(DIB3000MB_REG_ISI, DIB3000MB_ISI_ACTIVATE);
 332
 333         wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_AGC + DIB3000MB_RESTART_CTRL);
 334         wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_OFF);
 335
 336         /* wait for AGC lock */
 337         msleep(70);
 338
 339         wr_foreach(dib3000mb_reg_agc_bandwidth, dib3000mb_agc_bandwidth_low);
 340
 341         /* something has to be auto searched */
 342         if (ofdm->constellation == QAM_AUTO ||
 343                 ofdm->hierarchy_information == HIERARCHY_AUTO ||
 344                 fe_cr == FEC_AUTO ||
 345                 fep->inversion == INVERSION_AUTO) {
 346                 int as_count=0;
 347
 348                 deb_setf("autosearch enabled.\n");
 349
 350                 wr(DIB3000MB_REG_ISI, DIB3000MB_ISI_INHIBIT);
 351
 352                 wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_AUTO_SEARCH);
 353                 wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_OFF);
 354
 355                 while ((search_state =
 356                                 dib3000_search_status(
 357                                         rd(DIB3000MB_REG_AS_IRQ_PENDING),
 358                                         rd(DIB3000MB_REG_LOCK2_VALUE))) < 0 && as_count++ < 100)
 359                         msleep(1);
 360
 361                 deb_setf("search_state after autosearch %d after %d checks\n",search_state,as_count);
 362
 363                 if (search_state == 1) {
 364                         struct dvb_frontend_parameters feps;
 365                         if (dib3000mb_get_frontend(fe, &feps) == 0) {
 366                                 deb_setf("reading tuning data from frontend succeeded.\n");
 367                                 return dib3000mb_set_frontend(fe, &feps, 0);
 368                         }
 369                 }
 370
 371         } else {
 372                 wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_CTRL);
 373                 wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_OFF);
 374         }
 375
 376         return 0;
 377 }
 378
 379 static int dib3000mb_fe_init(struct dvb_frontend* fe, int mobile_mode)
 380 {
 381         struct dib3000_state* state = fe->demodulator_priv;
 382
 383         deb_info("dib3000mb is getting up.\n");
 384         wr(DIB3000MB_REG_POWER_CONTROL, DIB3000MB_POWER_UP);
 385
 386         wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_AGC);
 387
 388         wr(DIB3000MB_REG_RESET_DEVICE, DIB3000MB_RESET_DEVICE);
 389         wr(DIB3000MB_REG_RESET_DEVICE, DIB3000MB_RESET_DEVICE_RST);
 390
 391         wr(DIB3000MB_REG_CLOCK, DIB3000MB_CLOCK_DEFAULT);
 392
 393         wr(DIB3000MB_REG_ELECT_OUT_MODE, DIB3000MB_ELECT_OUT_MODE_ON);
 394
 395         wr(DIB3000MB_REG_DDS_FREQ_MSB, DIB3000MB_DDS_FREQ_MSB);
 396         wr(DIB3000MB_REG_DDS_FREQ_LSB, DIB3000MB_DDS_FREQ_LSB);
 397
 398         wr_foreach(dib3000mb_reg_timing_freq, dib3000mb_timing_freq[2]);
 399
 400         wr_foreach(dib3000mb_reg_impulse_noise,
 401                         dib3000mb_impulse_noise_values[DIB3000MB_IMPNOISE_OFF]);
 402
 403         wr_foreach(dib3000mb_reg_agc_gain, dib3000mb_default_agc_gain);
 404
 405         wr(DIB3000MB_REG_PHASE_NOISE, DIB3000MB_PHASE_NOISE_DEFAULT);
 406
 407         wr_foreach(dib3000mb_reg_phase_noise, dib3000mb_default_noise_phase);
 408
 409         wr_foreach(dib3000mb_reg_lock_duration, dib3000mb_default_lock_duration);
 410
 411         wr_foreach(dib3000mb_reg_agc_bandwidth, dib3000mb_agc_bandwidth_low);
 412
 413         wr(DIB3000MB_REG_LOCK0_MASK, DIB3000MB_LOCK0_DEFAULT);
 414         wr(DIB3000MB_REG_LOCK1_MASK, DIB3000MB_LOCK1_SEARCH_4);
 415         wr(DIB3000MB_REG_LOCK2_MASK, DIB3000MB_LOCK2_DEFAULT);
 416         wr(DIB3000MB_REG_SEQ, dib3000_seq[1][1][1]);
 417
 418         wr_foreach(dib3000mb_reg_bandwidth, dib3000mb_bandwidth_8mhz);
 419
 420         wr(DIB3000MB_REG_UNK_68, DIB3000MB_UNK_68);
 421         wr(DIB3000MB_REG_UNK_69, DIB3000MB_UNK_69);
 422         wr(DIB3000MB_REG_UNK_71, DIB3000MB_UNK_71);
 423         wr(DIB3000MB_REG_UNK_77, DIB3000MB_UNK_77);
 424         wr(DIB3000MB_REG_UNK_78, DIB3000MB_UNK_78);
 425         wr(DIB3000MB_REG_ISI, DIB3000MB_ISI_INHIBIT);
 426         wr(DIB3000MB_REG_UNK_92, DIB3000MB_UNK_92);
 427         wr(DIB3000MB_REG_UNK_96, DIB3000MB_UNK_96);
 428         wr(DIB3000MB_REG_UNK_97, DIB3000MB_UNK_97);
 429         wr(DIB3000MB_REG_UNK_106, DIB3000MB_UNK_106);
 430         wr(DIB3000MB_REG_UNK_107, DIB3000MB_UNK_107);
 431         wr(DIB3000MB_REG_UNK_108, DIB3000MB_UNK_108);
 432         wr(DIB3000MB_REG_UNK_122, DIB3000MB_UNK_122);
 433         wr(DIB3000MB_REG_MOBILE_MODE_QAM, DIB3000MB_MOBILE_MODE_QAM_OFF);
 434         wr(DIB3000MB_REG_BERLEN, DIB3000MB_BERLEN_DEFAULT);
 435
 436         wr_foreach(dib3000mb_reg_filter_coeffs, dib3000mb_filter_coeffs);
 437
 438         wr(DIB3000MB_REG_MOBILE_ALGO, DIB3000MB_MOBILE_ALGO_ON);
 439         wr(DIB3000MB_REG_MULTI_DEMOD_MSB, DIB3000MB_MULTI_DEMOD_MSB);
 440         wr(DIB3000MB_REG_MULTI_DEMOD_LSB, DIB3000MB_MULTI_DEMOD_LSB);
 441
 442         wr(DIB3000MB_REG_OUTPUT_MODE, DIB3000MB_OUTPUT_MODE_SLAVE);
 443
 444         wr(DIB3000MB_REG_FIFO_142, DIB3000MB_FIFO_142);
 445         wr(DIB3000MB_REG_MPEG2_OUT_MODE, DIB3000MB_MPEG2_OUT_MODE_188);
 446         wr(DIB3000MB_REG_PID_PARSE, DIB3000MB_PID_PARSE_ACTIVATE);
 447         wr(DIB3000MB_REG_FIFO, DIB3000MB_FIFO_INHIBIT);
 448         wr(DIB3000MB_REG_FIFO_146, DIB3000MB_FIFO_146);
 449         wr(DIB3000MB_REG_FIFO_147, DIB3000MB_FIFO_147);
 450
 451         wr(DIB3000MB_REG_DATA_IN_DIVERSITY, DIB3000MB_DATA_DIVERSITY_IN_OFF);
 452
 453         return 0;
 454 }
 455
 456 static int dib3000mb_get_frontend(struct dvb_frontend* fe,
 457                                   struct dvb_frontend_parameters *fep)
 458 {
 459         struct dib3000_state* state = fe->demodulator_priv;
 460         struct dvb_ofdm_parameters *ofdm = &fep->u.ofdm;
 461         fe_code_rate_t *cr;
 462         u16 tps_val;
 463         int inv_test1,inv_test2;
 464         u32 dds_val, threshold = 0x800000;
 465
 466         if (!rd(DIB3000MB_REG_TPS_LOCK))
 467                 return 0;
 468
 469         dds_val = ((rd(DIB3000MB_REG_DDS_VALUE_MSB) & 0xff) << 16) + rd(DIB3000MB_REG_DDS_VALUE_LSB);
 470         deb_getf("DDS_VAL: %x %x %x",dds_val, rd(DIB3000MB_REG_DDS_VALUE_MSB), rd(DIB3000MB_REG_DDS_VALUE_LSB));
 471         if (dds_val < threshold)
 472                 inv_test1 = 0;
 473         else if (dds_val == threshold)
 474                 inv_test1 = 1;
 475         else
 476                 inv_test1 = 2;
 477
 478         dds_val = ((rd(DIB3000MB_REG_DDS_FREQ_MSB) & 0xff) << 16) + rd(DIB3000MB_REG_DDS_FREQ_LSB);
 479         deb_getf("DDS_FREQ: %x %x %x",dds_val, rd(DIB3000MB_REG_DDS_FREQ_MSB), rd(DIB3000MB_REG_DDS_FREQ_LSB));
 480         if (dds_val < threshold)
 481                 inv_test2 = 0;
 482         else if (dds_val == threshold)
 483                 inv_test2 = 1;
 484         else
 485                 inv_test2 = 2;
 486
 487         fep->inversion =
 488                 ((inv_test2 == 2) && (inv_test1==1 || inv_test1==0)) ||
 489                 ((inv_test2 == 0) && (inv_test1==1 || inv_test1==2)) ?
 490                 INVERSION_ON : INVERSION_OFF;
 491
 492         deb_getf("inversion %d %d, %d\n", inv_test2, inv_test1, fep->inversion);
 493
 494         switch ((tps_val = rd(DIB3000MB_REG_TPS_QAM))) {
 495                 case DIB3000_CONSTELLATION_QPSK:
 496                         deb_getf("QPSK ");
 497                         ofdm->constellation = QPSK;
 498                         break;
 499                 case DIB3000_CONSTELLATION_16QAM:
 500                         deb_getf("QAM16 ");
 501                         ofdm->constellation = QAM_16;
 502                         break;
 503                 case DIB3000_CONSTELLATION_64QAM:
 504                         deb_getf("QAM64 ");
 505                         ofdm->constellation = QAM_64;
 506                         break;
 507                 default:
 508                         err("Unexpected constellation returned by TPS (%d)", tps_val);
 509                         break;
 510         }
 511         deb_getf("TPS: %d\n", tps_val);
 512
 513         if (rd(DIB3000MB_REG_TPS_HRCH)) {
 514                 deb_getf("HRCH ON\n");
 515                 cr = &ofdm->code_rate_LP;
 516                 ofdm->code_rate_HP = FEC_NONE;
 517                 switch ((tps_val = rd(DIB3000MB_REG_TPS_VIT_ALPHA))) {
 518                         case DIB3000_ALPHA_0:
 519                                 deb_getf("HIERARCHY_NONE ");
 520                                 ofdm->hierarchy_information = HIERARCHY_NONE;
 521                                 break;
 522                         case DIB3000_ALPHA_1:
 523                                 deb_getf("HIERARCHY_1 ");
 524                                 ofdm->hierarchy_information = HIERARCHY_1;
 525                                 break;
 526                         case DIB3000_ALPHA_2:
 527                                 deb_getf("HIERARCHY_2 ");
 528                                 ofdm->hierarchy_information = HIERARCHY_2;
 529                                 break;
 530                         case DIB3000_ALPHA_4:
 531                                 deb_getf("HIERARCHY_4 ");
 532                                 ofdm->hierarchy_information = HIERARCHY_4;
 533                                 break;
 534                         default:
 535                                 err("Unexpected ALPHA value returned by TPS (%d)", tps_val);
 536                                 break;
 537                 }
 538                 deb_getf("TPS: %d\n", tps_val);
 539
 540                 tps_val = rd(DIB3000MB_REG_TPS_CODE_RATE_LP);
 541         } else {
 542                 deb_getf("HRCH OFF\n");
 543                 cr = &ofdm->code_rate_HP;
 544                 ofdm->code_rate_LP = FEC_NONE;
 545                 ofdm->hierarchy_information = HIERARCHY_NONE;
 546
 547                 tps_val = rd(DIB3000MB_REG_TPS_CODE_RATE_HP);
 548         }
 549
 550         switch (tps_val) {
 551                 case DIB3000_FEC_1_2:
 552                         deb_getf("FEC_1_2 ");
 553                         *cr = FEC_1_2;
 554                         break;
 555                 case DIB3000_FEC_2_3:
 556                         deb_getf("FEC_2_3 ");
 557                         *cr = FEC_2_3;
 558                         break;
 559                 case DIB3000_FEC_3_4:
 560                         deb_getf("FEC_3_4 ");
 561                         *cr = FEC_3_4;
 562                         break;
 563                 case DIB3000_FEC_5_6:
 564                         deb_getf("FEC_5_6 ");
 565                         *cr = FEC_4_5;
 566                         break;
 567                 case DIB3000_FEC_7_8:
 568                         deb_getf("FEC_7_8 ");
 569                         *cr = FEC_7_8;
 570                         break;
 571                 default:
 572                         err("Unexpected FEC returned by TPS (%d)", tps_val);
 573                         break;
 574         }
 575         deb_getf("TPS: %d\n",tps_val);
 576
 577         switch ((tps_val = rd(DIB3000MB_REG_TPS_GUARD_TIME))) {
 578                 case DIB3000_GUARD_TIME_1_32:
 579                         deb_getf("GUARD_INTERVAL_1_32 ");
 580                         ofdm->guard_interval = GUARD_INTERVAL_1_32;
 581                         break;
 582                 case DIB3000_GUARD_TIME_1_16:
 583                         deb_getf("GUARD_INTERVAL_1_16 ");
 584                         ofdm->guard_interval = GUARD_INTERVAL_1_16;
 585                         break;
 586                 case DIB3000_GUARD_TIME_1_8:
 587                         deb_getf("GUARD_INTERVAL_1_8 ");
 588                         ofdm->guard_interval = GUARD_INTERVAL_1_8;
 589                         break;
 590                 case DIB3000_GUARD_TIME_1_4:
 591                         deb_getf("GUARD_INTERVAL_1_4 ");
 592                         ofdm->guard_interval = GUARD_INTERVAL_1_4;
 593                         break;
 594                 default:
 595                         err("Unexpected Guard Time returned by TPS (%d)", tps_val);
 596                         break;
 597         }
 598         deb_getf("TPS: %d\n", tps_val);
 599
 600         switch ((tps_val = rd(DIB3000MB_REG_TPS_FFT))) {
 601                 case DIB3000_TRANSMISSION_MODE_2K:
 602                         deb_getf("TRANSMISSION_MODE_2K ");
 603                         ofdm->transmission_mode = TRANSMISSION_MODE_2K;
 604                         break;
 605                 case DIB3000_TRANSMISSION_MODE_8K:
 606                         deb_getf("TRANSMISSION_MODE_8K ");
 607                         ofdm->transmission_mode = TRANSMISSION_MODE_8K;
 608                         break;
 609                 default:
 610                         err("unexpected transmission mode return by TPS (%d)", tps_val);
 611                         break;
 612         }
 613         deb_getf("TPS: %d\n", tps_val);
 614
 615         return 0;
 616 }
 617
 618 static int dib3000mb_read_status(struct dvb_frontend* fe, fe_status_t *stat)
 619 {
 620         struct dib3000_state* state = fe->demodulator_priv;
 621
 622         *stat = 0;
 623
 624         if (rd(DIB3000MB_REG_AGC_LOCK))
 625                 *stat |= FE_HAS_SIGNAL;
 626         if (rd(DIB3000MB_REG_CARRIER_LOCK))
 627                 *stat |= FE_HAS_CARRIER;
 628         if (rd(DIB3000MB_REG_VIT_LCK))
 629                 *stat |= FE_HAS_VITERBI;
 630         if (rd(DIB3000MB_REG_TS_SYNC_LOCK))
 631                 *stat |= (FE_HAS_SYNC | FE_HAS_LOCK);
 632
 633         deb_getf("actual status is %2x\n",*stat);
 634
 635         deb_getf("autoval: tps: %d, qam: %d, hrch: %d, alpha: %d, hp: %d, lp: %d, guard: %d, fft: %d cell: %d\n",
 636                         rd(DIB3000MB_REG_TPS_LOCK),
 637                         rd(DIB3000MB_REG_TPS_QAM),
 638                         rd(DIB3000MB_REG_TPS_HRCH),
 639                         rd(DIB3000MB_REG_TPS_VIT_ALPHA),
 640                         rd(DIB3000MB_REG_TPS_CODE_RATE_HP),
 641                         rd(DIB3000MB_REG_TPS_CODE_RATE_LP),
 642                         rd(DIB3000MB_REG_TPS_GUARD_TIME),
 643                         rd(DIB3000MB_REG_TPS_FFT),
 644                         rd(DIB3000MB_REG_TPS_CELL_ID));
 645
 646         //*stat = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK;
 647         return 0;
 648 }
 649
 650 static int dib3000mb_read_ber(struct dvb_frontend* fe, u32 *ber)
 651 {
 652         struct dib3000_state* state = fe->demodulator_priv;
 653
 654         *ber = ((rd(DIB3000MB_REG_BER_MSB) << 16) | rd(DIB3000MB_REG_BER_LSB));
 655         return 0;
 656 }
 657
 658 /* see dib3000-watch dvb-apps for exact calcuations of signal_strength and snr */
 659 static int dib3000mb_read_signal_strength(struct dvb_frontend* fe, u16 *strength)
 660 {
 661         struct dib3000_state* state = fe->demodulator_priv;
 662
 663         *strength = rd(DIB3000MB_REG_SIGNAL_POWER) * 0xffff / 0x170;
 664         return 0;
 665 }
 666
 667 static int dib3000mb_read_snr(struct dvb_frontend* fe, u16 *snr)
 668 {
 669         struct dib3000_state* state = fe->demodulator_priv;
 670         short sigpow = rd(DIB3000MB_REG_SIGNAL_POWER);
 671         int icipow = ((rd(DIB3000MB_REG_NOISE_POWER_MSB) & 0xff) << 16) |
 672                 rd(DIB3000MB_REG_NOISE_POWER_LSB);
 673         *snr = (sigpow << 8) / ((icipow > 0) ? icipow : 1);
 674         return 0;
 675 }
 676
 677 static int dib3000mb_read_unc_blocks(struct dvb_frontend* fe, u32 *unc)
 678 {
 679         struct dib3000_state* state = fe->demodulator_priv;
 680
 681         *unc = rd(DIB3000MB_REG_PACKET_ERROR_RATE);
 682         return 0;
 683 }
 684
 685 static int dib3000mb_sleep(struct dvb_frontend* fe)
 686 {
 687         struct dib3000_state* state = fe->demodulator_priv;
 688         deb_info("dib3000mb is going to bed.\n");
 689         wr(DIB3000MB_REG_POWER_CONTROL, DIB3000MB_POWER_DOWN);
 690         return 0;
 691 }
 692
 693 static int dib3000mb_fe_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings *tune)
 694 {
 695         tune->min_delay_ms = 800;
 696         return 0;
 697 }
 698
 699 static int dib3000mb_fe_init_nonmobile(struct dvb_frontend* fe)
 700 {
 701         return dib3000mb_fe_init(fe, 0);
 702 }
 703
 704 static int dib3000mb_set_frontend_and_tuner(struct dvb_frontend* fe, struct dvb_frontend_parameters *fep)
 705 {
 706         return dib3000mb_set_frontend(fe, fep, 1);
 707 }
 708
 709 static void dib3000mb_release(struct dvb_frontend* fe)
 710 {
 711         struct dib3000_state *state = fe->demodulator_priv;
 712         kfree(state);
 713 }
 714
 715 /* pid filter and transfer stuff */
 716 static int dib3000mb_pid_control(struct dvb_frontend *fe,int index, int pid,int onoff)
 717 {
 718         struct dib3000_state *state = fe->demodulator_priv;
 719         pid = (onoff ? pid | DIB3000_ACTIVATE_PID_FILTERING : 0);
 720         wr(index+DIB3000MB_REG_FIRST_PID,pid);
 721         return 0;
 722 }
 723
 724 static int dib3000mb_fifo_control(struct dvb_frontend *fe, int onoff)
 725 {
 726         struct dib3000_state *state = fe->demodulator_priv;
 727
 728         deb_xfer("%s fifo\n",onoff ? "enabling" : "disabling");
 729         if (onoff) {
 730                 wr(DIB3000MB_REG_FIFO, DIB3000MB_FIFO_ACTIVATE);
 731         } else {
 732                 wr(DIB3000MB_REG_FIFO, DIB3000MB_FIFO_INHIBIT);
 733         }
 734         return 0;
 735 }
 736
 737 static int dib3000mb_pid_parse(struct dvb_frontend *fe, int onoff)
 738 {
 739         struct dib3000_state *state = fe->demodulator_priv;
 740         deb_xfer("%s pid parsing\n",onoff ? "enabling" : "disabling");
 741         wr(DIB3000MB_REG_PID_PARSE,onoff);
 742         return 0;
 743 }
 744
 745 static int dib3000mb_tuner_pass_ctrl(struct dvb_frontend *fe, int onoff, u8 pll_addr)
 746 {
 747         struct dib3000_state *state = fe->demodulator_priv;
 748         if (onoff) {
 749                 wr(DIB3000MB_REG_TUNER, DIB3000_TUNER_WRITE_ENABLE(pll_addr));
 750         } else {
 751                 wr(DIB3000MB_REG_TUNER, DIB3000_TUNER_WRITE_DISABLE(pll_addr));
 752         }
 753         return 0;
 754 }
 755
 756 static struct dvb_frontend_ops dib3000mb_ops;
 757
 758 struct dvb_frontend* dib3000mb_attach(const struct dib3000_config* config,
 759                                       struct i2c_adapter* i2c, struct dib_fe_xfer_ops *xfer_ops)
 760 {
 761         struct dib3000_state* state = NULL;
 762
 763         /* allocate memory for the internal state */
 764         state = kzalloc(sizeof(struct dib3000_state), GFP_KERNEL);
 765         if (state == NULL)
 766                 goto error;
 767
 768         /* setup the state */
 769         state->i2c = i2c;
 770         memcpy(&state->config,config,sizeof(struct dib3000_config));
 771
 772         /* check for the correct demod */
 773         if (rd(DIB3000_REG_MANUFACTOR_ID) != DIB3000_I2C_ID_DIBCOM)
 774                 goto error;
 775
 776         if (rd(DIB3000_REG_DEVICE_ID) != DIB3000MB_DEVICE_ID)
 777                 goto error;
 778
 779         /* create dvb_frontend */
 780         memcpy(&state->frontend.ops, &dib3000mb_ops, sizeof(struct dvb_frontend_ops));
 781         state->frontend.demodulator_priv = state;
 782
 783         /* set the xfer operations */
 784         xfer_ops->pid_parse = dib3000mb_pid_parse;
 785         xfer_ops->fifo_ctrl = dib3000mb_fifo_control;
 786         xfer_ops->pid_ctrl = dib3000mb_pid_control;
 787         xfer_ops->tuner_pass_ctrl = dib3000mb_tuner_pass_ctrl;
 788
 789         return &state->frontend;
 790
 791 error:
 792         kfree(state);
 793         return NULL;
 794 }
 795
 796 static struct dvb_frontend_ops dib3000mb_ops = {
 797
 798         .info = {
 799                 .name                   = "DiBcom 3000M-B DVB-T",
 800                 .type                   = FE_OFDM,
 801                 .frequency_min          = 44250000,
 802                 .frequency_max          = 867250000,
 803                 .frequency_stepsize     = 62500,
 804                 .caps = FE_CAN_INVERSION_AUTO |
 805                                 FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
 806                                 FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
 807                                 FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO |
 808                                 FE_CAN_TRANSMISSION_MODE_AUTO |
 809                                 FE_CAN_GUARD_INTERVAL_AUTO |
 810                                 FE_CAN_RECOVER |
 811                                 FE_CAN_HIERARCHY_AUTO,
 812         },
 813
 814         .release = dib3000mb_release,
 815
 816         .init = dib3000mb_fe_init_nonmobile,
 817         .sleep = dib3000mb_sleep,
 818
 819         .set_frontend = dib3000mb_set_frontend_and_tuner,
 820         .get_frontend = dib3000mb_get_frontend,
 821         .get_tune_settings = dib3000mb_fe_get_tune_settings,
 822
 823         .read_status = dib3000mb_read_status,
 824         .read_ber = dib3000mb_read_ber,
 825         .read_signal_strength = dib3000mb_read_signal_strength,
 826         .read_snr = dib3000mb_read_snr,
 827         .read_ucblocks = dib3000mb_read_unc_blocks,
 828 };
 829
 830 MODULE_AUTHOR(DRIVER_AUTHOR);
 831 MODULE_DESCRIPTION(DRIVER_DESC);
 832 MODULE_LICENSE("GPL");
 833
 834 EXPORT_SYMBOL(dib3000mb_attach);