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@posteo.de)
   6  *
   7  * based on GPL code from DibCom, which has
   8  *
   9  * Copyright (C) 2004 Amaury Demol for DiBcom
  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 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@posteo.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 dtv_frontend_properties *c);
 117
 118 static int dib3000mb_set_frontend(struct dvb_frontend *fe, int tuner)
 119 {
 120         struct dib3000_state* state = fe->demodulator_priv;
 121         struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 122         enum fe_code_rate fe_cr = FEC_NONE;
 123         int search_state, seq;
 124
 125         if (tuner && fe->ops.tuner_ops.set_params) {
 126                 fe->ops.tuner_ops.set_params(fe);
 127                 if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0);
 128
 129                 deb_setf("bandwidth: ");
 130                 switch (c->bandwidth_hz) {
 131                         case 8000000:
 132                                 deb_setf("8 MHz\n");
 133                                 wr_foreach(dib3000mb_reg_timing_freq, dib3000mb_timing_freq[2]);
 134                                 wr_foreach(dib3000mb_reg_bandwidth, dib3000mb_bandwidth_8mhz);
 135                                 break;
 136                         case 7000000:
 137                                 deb_setf("7 MHz\n");
 138                                 wr_foreach(dib3000mb_reg_timing_freq, dib3000mb_timing_freq[1]);
 139                                 wr_foreach(dib3000mb_reg_bandwidth, dib3000mb_bandwidth_7mhz);
 140                                 break;
 141                         case 6000000:
 142                                 deb_setf("6 MHz\n");
 143                                 wr_foreach(dib3000mb_reg_timing_freq, dib3000mb_timing_freq[0]);
 144                                 wr_foreach(dib3000mb_reg_bandwidth, dib3000mb_bandwidth_6mhz);
 145                                 break;
 146                         case 0:
 147                                 return -EOPNOTSUPP;
 148                         default:
 149                                 err("unknown bandwidth value.");
 150                                 return -EINVAL;
 151                 }
 152         }
 153         wr(DIB3000MB_REG_LOCK1_MASK, DIB3000MB_LOCK1_SEARCH_4);
 154
 155         deb_setf("transmission mode: ");
 156         switch (c->transmission_mode) {
 157                 case TRANSMISSION_MODE_2K:
 158                         deb_setf("2k\n");
 159                         wr(DIB3000MB_REG_FFT, DIB3000_TRANSMISSION_MODE_2K);
 160                         break;
 161                 case TRANSMISSION_MODE_8K:
 162                         deb_setf("8k\n");
 163                         wr(DIB3000MB_REG_FFT, DIB3000_TRANSMISSION_MODE_8K);
 164                         break;
 165                 case TRANSMISSION_MODE_AUTO:
 166                         deb_setf("auto\n");
 167                         break;
 168                 default:
 169                         return -EINVAL;
 170         }
 171
 172         deb_setf("guard: ");
 173         switch (c->guard_interval) {
 174                 case GUARD_INTERVAL_1_32:
 175                         deb_setf("1_32\n");
 176                         wr(DIB3000MB_REG_GUARD_TIME, DIB3000_GUARD_TIME_1_32);
 177                         break;
 178                 case GUARD_INTERVAL_1_16:
 179                         deb_setf("1_16\n");
 180                         wr(DIB3000MB_REG_GUARD_TIME, DIB3000_GUARD_TIME_1_16);
 181                         break;
 182                 case GUARD_INTERVAL_1_8:
 183                         deb_setf("1_8\n");
 184                         wr(DIB3000MB_REG_GUARD_TIME, DIB3000_GUARD_TIME_1_8);
 185                         break;
 186                 case GUARD_INTERVAL_1_4:
 187                         deb_setf("1_4\n");
 188                         wr(DIB3000MB_REG_GUARD_TIME, DIB3000_GUARD_TIME_1_4);
 189                         break;
 190                 case GUARD_INTERVAL_AUTO:
 191                         deb_setf("auto\n");
 192                         break;
 193                 default:
 194                         return -EINVAL;
 195         }
 196
 197         deb_setf("inversion: ");
 198         switch (c->inversion) {
 199                 case INVERSION_OFF:
 200                         deb_setf("off\n");
 201                         wr(DIB3000MB_REG_DDS_INV, DIB3000_DDS_INVERSION_OFF);
 202                         break;
 203                 case INVERSION_AUTO:
 204                         deb_setf("auto ");
 205                         break;
 206                 case INVERSION_ON:
 207                         deb_setf("on\n");
 208                         wr(DIB3000MB_REG_DDS_INV, DIB3000_DDS_INVERSION_ON);
 209                         break;
 210                 default:
 211                         return -EINVAL;
 212         }
 213
 214         deb_setf("modulation: ");
 215         switch (c->modulation) {
 216                 case QPSK:
 217                         deb_setf("qpsk\n");
 218                         wr(DIB3000MB_REG_QAM, DIB3000_CONSTELLATION_QPSK);
 219                         break;
 220                 case QAM_16:
 221                         deb_setf("qam16\n");
 222                         wr(DIB3000MB_REG_QAM, DIB3000_CONSTELLATION_16QAM);
 223                         break;
 224                 case QAM_64:
 225                         deb_setf("qam64\n");
 226                         wr(DIB3000MB_REG_QAM, DIB3000_CONSTELLATION_64QAM);
 227                         break;
 228                 case QAM_AUTO:
 229                         break;
 230                 default:
 231                         return -EINVAL;
 232         }
 233         deb_setf("hierarchy: ");
 234         switch (c->hierarchy) {
 235                 case HIERARCHY_NONE:
 236                         deb_setf("none ");
 237                         /* fall through */
 238                 case HIERARCHY_1:
 239                         deb_setf("alpha=1\n");
 240                         wr(DIB3000MB_REG_VIT_ALPHA, DIB3000_ALPHA_1);
 241                         break;
 242                 case HIERARCHY_2:
 243                         deb_setf("alpha=2\n");
 244                         wr(DIB3000MB_REG_VIT_ALPHA, DIB3000_ALPHA_2);
 245                         break;
 246                 case HIERARCHY_4:
 247                         deb_setf("alpha=4\n");
 248                         wr(DIB3000MB_REG_VIT_ALPHA, DIB3000_ALPHA_4);
 249                         break;
 250                 case HIERARCHY_AUTO:
 251                         deb_setf("alpha=auto\n");
 252                         break;
 253                 default:
 254                         return -EINVAL;
 255         }
 256
 257         deb_setf("hierarchy: ");
 258         if (c->hierarchy == HIERARCHY_NONE) {
 259                 deb_setf("none\n");
 260                 wr(DIB3000MB_REG_VIT_HRCH, DIB3000_HRCH_OFF);
 261                 wr(DIB3000MB_REG_VIT_HP, DIB3000_SELECT_HP);
 262                 fe_cr = c->code_rate_HP;
 263         } else if (c->hierarchy != HIERARCHY_AUTO) {
 264                 deb_setf("on\n");
 265                 wr(DIB3000MB_REG_VIT_HRCH, DIB3000_HRCH_ON);
 266                 wr(DIB3000MB_REG_VIT_HP, DIB3000_SELECT_LP);
 267                 fe_cr = c->code_rate_LP;
 268         }
 269         deb_setf("fec: ");
 270         switch (fe_cr) {
 271                 case FEC_1_2:
 272                         deb_setf("1_2\n");
 273                         wr(DIB3000MB_REG_VIT_CODE_RATE, DIB3000_FEC_1_2);
 274                         break;
 275                 case FEC_2_3:
 276                         deb_setf("2_3\n");
 277                         wr(DIB3000MB_REG_VIT_CODE_RATE, DIB3000_FEC_2_3);
 278                         break;
 279                 case FEC_3_4:
 280                         deb_setf("3_4\n");
 281                         wr(DIB3000MB_REG_VIT_CODE_RATE, DIB3000_FEC_3_4);
 282                         break;
 283                 case FEC_5_6:
 284                         deb_setf("5_6\n");
 285                         wr(DIB3000MB_REG_VIT_CODE_RATE, DIB3000_FEC_5_6);
 286                         break;
 287                 case FEC_7_8:
 288                         deb_setf("7_8\n");
 289                         wr(DIB3000MB_REG_VIT_CODE_RATE, DIB3000_FEC_7_8);
 290                         break;
 291                 case FEC_NONE:
 292                         deb_setf("none ");
 293                         break;
 294                 case FEC_AUTO:
 295                         deb_setf("auto\n");
 296                         break;
 297                 default:
 298                         return -EINVAL;
 299         }
 300
 301         seq = dib3000_seq
 302                 [c->transmission_mode == TRANSMISSION_MODE_AUTO]
 303                 [c->guard_interval == GUARD_INTERVAL_AUTO]
 304                 [c->inversion == INVERSION_AUTO];
 305
 306         deb_setf("seq? %d\n", seq);
 307
 308         wr(DIB3000MB_REG_SEQ, seq);
 309
 310         wr(DIB3000MB_REG_ISI, seq ? DIB3000MB_ISI_INHIBIT : DIB3000MB_ISI_ACTIVATE);
 311
 312         if (c->transmission_mode == TRANSMISSION_MODE_2K) {
 313                 if (c->guard_interval == GUARD_INTERVAL_1_8) {
 314                         wr(DIB3000MB_REG_SYNC_IMPROVEMENT, DIB3000MB_SYNC_IMPROVE_2K_1_8);
 315                 } else {
 316                         wr(DIB3000MB_REG_SYNC_IMPROVEMENT, DIB3000MB_SYNC_IMPROVE_DEFAULT);
 317                 }
 318
 319                 wr(DIB3000MB_REG_UNK_121, DIB3000MB_UNK_121_2K);
 320         } else {
 321                 wr(DIB3000MB_REG_UNK_121, DIB3000MB_UNK_121_DEFAULT);
 322         }
 323
 324         wr(DIB3000MB_REG_MOBILE_ALGO, DIB3000MB_MOBILE_ALGO_OFF);
 325         wr(DIB3000MB_REG_MOBILE_MODE_QAM, DIB3000MB_MOBILE_MODE_QAM_OFF);
 326         wr(DIB3000MB_REG_MOBILE_MODE, DIB3000MB_MOBILE_MODE_OFF);
 327
 328         wr_foreach(dib3000mb_reg_agc_bandwidth, dib3000mb_agc_bandwidth_high);
 329
 330         wr(DIB3000MB_REG_ISI, DIB3000MB_ISI_ACTIVATE);
 331
 332         wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_AGC + DIB3000MB_RESTART_CTRL);
 333         wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_OFF);
 334
 335         /* wait for AGC lock */
 336         msleep(70);
 337
 338         wr_foreach(dib3000mb_reg_agc_bandwidth, dib3000mb_agc_bandwidth_low);
 339
 340         /* something has to be auto searched */
 341         if (c->modulation == QAM_AUTO ||
 342                 c->hierarchy == HIERARCHY_AUTO ||
 343                 fe_cr == FEC_AUTO ||
 344                 c->inversion == INVERSION_AUTO) {
 345                 int as_count=0;
 346
 347                 deb_setf("autosearch enabled.\n");
 348
 349                 wr(DIB3000MB_REG_ISI, DIB3000MB_ISI_INHIBIT);
 350
 351                 wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_AUTO_SEARCH);
 352                 wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_OFF);
 353
 354                 while ((search_state =
 355                                 dib3000_search_status(
 356                                         rd(DIB3000MB_REG_AS_IRQ_PENDING),
 357                                         rd(DIB3000MB_REG_LOCK2_VALUE))) < 0 && as_count++ < 100)
 358                         msleep(1);
 359
 360                 deb_setf("search_state after autosearch %d after %d checks\n",search_state,as_count);
 361
 362                 if (search_state == 1) {
 363                         if (dib3000mb_get_frontend(fe, c) == 0) {
 364                                 deb_setf("reading tuning data from frontend succeeded.\n");
 365                                 return dib3000mb_set_frontend(fe, 0);
 366                         }
 367                 }
 368
 369         } else {
 370                 wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_CTRL);
 371                 wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_OFF);
 372         }
 373
 374         return 0;
 375 }
 376
 377 static int dib3000mb_fe_init(struct dvb_frontend* fe, int mobile_mode)
 378 {
 379         struct dib3000_state* state = fe->demodulator_priv;
 380
 381         deb_info("dib3000mb is getting up.\n");
 382         wr(DIB3000MB_REG_POWER_CONTROL, DIB3000MB_POWER_UP);
 383
 384         wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_AGC);
 385
 386         wr(DIB3000MB_REG_RESET_DEVICE, DIB3000MB_RESET_DEVICE);
 387         wr(DIB3000MB_REG_RESET_DEVICE, DIB3000MB_RESET_DEVICE_RST);
 388
 389         wr(DIB3000MB_REG_CLOCK, DIB3000MB_CLOCK_DEFAULT);
 390
 391         wr(DIB3000MB_REG_ELECT_OUT_MODE, DIB3000MB_ELECT_OUT_MODE_ON);
 392
 393         wr(DIB3000MB_REG_DDS_FREQ_MSB, DIB3000MB_DDS_FREQ_MSB);
 394         wr(DIB3000MB_REG_DDS_FREQ_LSB, DIB3000MB_DDS_FREQ_LSB);
 395
 396         wr_foreach(dib3000mb_reg_timing_freq, dib3000mb_timing_freq[2]);
 397
 398         wr_foreach(dib3000mb_reg_impulse_noise,
 399                         dib3000mb_impulse_noise_values[DIB3000MB_IMPNOISE_OFF]);
 400
 401         wr_foreach(dib3000mb_reg_agc_gain, dib3000mb_default_agc_gain);
 402
 403         wr(DIB3000MB_REG_PHASE_NOISE, DIB3000MB_PHASE_NOISE_DEFAULT);
 404
 405         wr_foreach(dib3000mb_reg_phase_noise, dib3000mb_default_noise_phase);
 406
 407         wr_foreach(dib3000mb_reg_lock_duration, dib3000mb_default_lock_duration);
 408
 409         wr_foreach(dib3000mb_reg_agc_bandwidth, dib3000mb_agc_bandwidth_low);
 410
 411         wr(DIB3000MB_REG_LOCK0_MASK, DIB3000MB_LOCK0_DEFAULT);
 412         wr(DIB3000MB_REG_LOCK1_MASK, DIB3000MB_LOCK1_SEARCH_4);
 413         wr(DIB3000MB_REG_LOCK2_MASK, DIB3000MB_LOCK2_DEFAULT);
 414         wr(DIB3000MB_REG_SEQ, dib3000_seq[1][1][1]);
 415
 416         wr_foreach(dib3000mb_reg_bandwidth, dib3000mb_bandwidth_8mhz);
 417
 418         wr(DIB3000MB_REG_UNK_68, DIB3000MB_UNK_68);
 419         wr(DIB3000MB_REG_UNK_69, DIB3000MB_UNK_69);
 420         wr(DIB3000MB_REG_UNK_71, DIB3000MB_UNK_71);
 421         wr(DIB3000MB_REG_UNK_77, DIB3000MB_UNK_77);
 422         wr(DIB3000MB_REG_UNK_78, DIB3000MB_UNK_78);
 423         wr(DIB3000MB_REG_ISI, DIB3000MB_ISI_INHIBIT);
 424         wr(DIB3000MB_REG_UNK_92, DIB3000MB_UNK_92);
 425         wr(DIB3000MB_REG_UNK_96, DIB3000MB_UNK_96);
 426         wr(DIB3000MB_REG_UNK_97, DIB3000MB_UNK_97);
 427         wr(DIB3000MB_REG_UNK_106, DIB3000MB_UNK_106);
 428         wr(DIB3000MB_REG_UNK_107, DIB3000MB_UNK_107);
 429         wr(DIB3000MB_REG_UNK_108, DIB3000MB_UNK_108);
 430         wr(DIB3000MB_REG_UNK_122, DIB3000MB_UNK_122);
 431         wr(DIB3000MB_REG_MOBILE_MODE_QAM, DIB3000MB_MOBILE_MODE_QAM_OFF);
 432         wr(DIB3000MB_REG_BERLEN, DIB3000MB_BERLEN_DEFAULT);
 433
 434         wr_foreach(dib3000mb_reg_filter_coeffs, dib3000mb_filter_coeffs);
 435
 436         wr(DIB3000MB_REG_MOBILE_ALGO, DIB3000MB_MOBILE_ALGO_ON);
 437         wr(DIB3000MB_REG_MULTI_DEMOD_MSB, DIB3000MB_MULTI_DEMOD_MSB);
 438         wr(DIB3000MB_REG_MULTI_DEMOD_LSB, DIB3000MB_MULTI_DEMOD_LSB);
 439
 440         wr(DIB3000MB_REG_OUTPUT_MODE, DIB3000MB_OUTPUT_MODE_SLAVE);
 441
 442         wr(DIB3000MB_REG_FIFO_142, DIB3000MB_FIFO_142);
 443         wr(DIB3000MB_REG_MPEG2_OUT_MODE, DIB3000MB_MPEG2_OUT_MODE_188);
 444         wr(DIB3000MB_REG_PID_PARSE, DIB3000MB_PID_PARSE_ACTIVATE);
 445         wr(DIB3000MB_REG_FIFO, DIB3000MB_FIFO_INHIBIT);
 446         wr(DIB3000MB_REG_FIFO_146, DIB3000MB_FIFO_146);
 447         wr(DIB3000MB_REG_FIFO_147, DIB3000MB_FIFO_147);
 448
 449         wr(DIB3000MB_REG_DATA_IN_DIVERSITY, DIB3000MB_DATA_DIVERSITY_IN_OFF);
 450
 451         return 0;
 452 }
 453
 454 static int dib3000mb_get_frontend(struct dvb_frontend* fe,
 455                                   struct dtv_frontend_properties *c)
 456 {
 457         struct dib3000_state* state = fe->demodulator_priv;
 458         enum fe_code_rate *cr;
 459         u16 tps_val;
 460         int inv_test1,inv_test2;
 461         u32 dds_val, threshold = 0x800000;
 462
 463         if (!rd(DIB3000MB_REG_TPS_LOCK))
 464                 return 0;
 465
 466         dds_val = ((rd(DIB3000MB_REG_DDS_VALUE_MSB) & 0xff) << 16) + rd(DIB3000MB_REG_DDS_VALUE_LSB);
 467         deb_getf("DDS_VAL: %x %x %x",dds_val, rd(DIB3000MB_REG_DDS_VALUE_MSB), rd(DIB3000MB_REG_DDS_VALUE_LSB));
 468         if (dds_val < threshold)
 469                 inv_test1 = 0;
 470         else if (dds_val == threshold)
 471                 inv_test1 = 1;
 472         else
 473                 inv_test1 = 2;
 474
 475         dds_val = ((rd(DIB3000MB_REG_DDS_FREQ_MSB) & 0xff) << 16) + rd(DIB3000MB_REG_DDS_FREQ_LSB);
 476         deb_getf("DDS_FREQ: %x %x %x",dds_val, rd(DIB3000MB_REG_DDS_FREQ_MSB), rd(DIB3000MB_REG_DDS_FREQ_LSB));
 477         if (dds_val < threshold)
 478                 inv_test2 = 0;
 479         else if (dds_val == threshold)
 480                 inv_test2 = 1;
 481         else
 482                 inv_test2 = 2;
 483
 484         c->inversion =
 485                 ((inv_test2 == 2) && (inv_test1==1 || inv_test1==0)) ||
 486                 ((inv_test2 == 0) && (inv_test1==1 || inv_test1==2)) ?
 487                 INVERSION_ON : INVERSION_OFF;
 488
 489         deb_getf("inversion %d %d, %d\n", inv_test2, inv_test1, c->inversion);
 490
 491         switch ((tps_val = rd(DIB3000MB_REG_TPS_QAM))) {
 492                 case DIB3000_CONSTELLATION_QPSK:
 493                         deb_getf("QPSK ");
 494                         c->modulation = QPSK;
 495                         break;
 496                 case DIB3000_CONSTELLATION_16QAM:
 497                         deb_getf("QAM16 ");
 498                         c->modulation = QAM_16;
 499                         break;
 500                 case DIB3000_CONSTELLATION_64QAM:
 501                         deb_getf("QAM64 ");
 502                         c->modulation = QAM_64;
 503                         break;
 504                 default:
 505                         err("Unexpected constellation returned by TPS (%d)", tps_val);
 506                         break;
 507         }
 508         deb_getf("TPS: %d\n", tps_val);
 509
 510         if (rd(DIB3000MB_REG_TPS_HRCH)) {
 511                 deb_getf("HRCH ON\n");
 512                 cr = &c->code_rate_LP;
 513                 c->code_rate_HP = FEC_NONE;
 514                 switch ((tps_val = rd(DIB3000MB_REG_TPS_VIT_ALPHA))) {
 515                         case DIB3000_ALPHA_0:
 516                                 deb_getf("HIERARCHY_NONE ");
 517                                 c->hierarchy = HIERARCHY_NONE;
 518                                 break;
 519                         case DIB3000_ALPHA_1:
 520                                 deb_getf("HIERARCHY_1 ");
 521                                 c->hierarchy = HIERARCHY_1;
 522                                 break;
 523                         case DIB3000_ALPHA_2:
 524                                 deb_getf("HIERARCHY_2 ");
 525                                 c->hierarchy = HIERARCHY_2;
 526                                 break;
 527                         case DIB3000_ALPHA_4:
 528                                 deb_getf("HIERARCHY_4 ");
 529                                 c->hierarchy = HIERARCHY_4;
 530                                 break;
 531                         default:
 532                                 err("Unexpected ALPHA value returned by TPS (%d)", tps_val);
 533                                 break;
 534                 }
 535                 deb_getf("TPS: %d\n", tps_val);
 536
 537                 tps_val = rd(DIB3000MB_REG_TPS_CODE_RATE_LP);
 538         } else {
 539                 deb_getf("HRCH OFF\n");
 540                 cr = &c->code_rate_HP;
 541                 c->code_rate_LP = FEC_NONE;
 542                 c->hierarchy = HIERARCHY_NONE;
 543
 544                 tps_val = rd(DIB3000MB_REG_TPS_CODE_RATE_HP);
 545         }
 546
 547         switch (tps_val) {
 548                 case DIB3000_FEC_1_2:
 549                         deb_getf("FEC_1_2 ");
 550                         *cr = FEC_1_2;
 551                         break;
 552                 case DIB3000_FEC_2_3:
 553                         deb_getf("FEC_2_3 ");
 554                         *cr = FEC_2_3;
 555                         break;
 556                 case DIB3000_FEC_3_4:
 557                         deb_getf("FEC_3_4 ");
 558                         *cr = FEC_3_4;
 559                         break;
 560                 case DIB3000_FEC_5_6:
 561                         deb_getf("FEC_5_6 ");
 562                         *cr = FEC_4_5;
 563                         break;
 564                 case DIB3000_FEC_7_8:
 565                         deb_getf("FEC_7_8 ");
 566                         *cr = FEC_7_8;
 567                         break;
 568                 default:
 569                         err("Unexpected FEC returned by TPS (%d)", tps_val);
 570                         break;
 571         }
 572         deb_getf("TPS: %d\n",tps_val);
 573
 574         switch ((tps_val = rd(DIB3000MB_REG_TPS_GUARD_TIME))) {
 575                 case DIB3000_GUARD_TIME_1_32:
 576                         deb_getf("GUARD_INTERVAL_1_32 ");
 577                         c->guard_interval = GUARD_INTERVAL_1_32;
 578                         break;
 579                 case DIB3000_GUARD_TIME_1_16:
 580                         deb_getf("GUARD_INTERVAL_1_16 ");
 581                         c->guard_interval = GUARD_INTERVAL_1_16;
 582                         break;
 583                 case DIB3000_GUARD_TIME_1_8:
 584                         deb_getf("GUARD_INTERVAL_1_8 ");
 585                         c->guard_interval = GUARD_INTERVAL_1_8;
 586                         break;
 587                 case DIB3000_GUARD_TIME_1_4:
 588                         deb_getf("GUARD_INTERVAL_1_4 ");
 589                         c->guard_interval = GUARD_INTERVAL_1_4;
 590                         break;
 591                 default:
 592                         err("Unexpected Guard Time returned by TPS (%d)", tps_val);
 593                         break;
 594         }
 595         deb_getf("TPS: %d\n", tps_val);
 596
 597         switch ((tps_val = rd(DIB3000MB_REG_TPS_FFT))) {
 598                 case DIB3000_TRANSMISSION_MODE_2K:
 599                         deb_getf("TRANSMISSION_MODE_2K ");
 600                         c->transmission_mode = TRANSMISSION_MODE_2K;
 601                         break;
 602                 case DIB3000_TRANSMISSION_MODE_8K:
 603                         deb_getf("TRANSMISSION_MODE_8K ");
 604                         c->transmission_mode = TRANSMISSION_MODE_8K;
 605                         break;
 606                 default:
 607                         err("unexpected transmission mode return by TPS (%d)", tps_val);
 608                         break;
 609         }
 610         deb_getf("TPS: %d\n", tps_val);
 611
 612         return 0;
 613 }
 614
 615 static int dib3000mb_read_status(struct dvb_frontend *fe,
 616                                  enum fe_status *stat)
 617 {
 618         struct dib3000_state* state = fe->demodulator_priv;
 619
 620         *stat = 0;
 621
 622         if (rd(DIB3000MB_REG_AGC_LOCK))
 623                 *stat |= FE_HAS_SIGNAL;
 624         if (rd(DIB3000MB_REG_CARRIER_LOCK))
 625                 *stat |= FE_HAS_CARRIER;
 626         if (rd(DIB3000MB_REG_VIT_LCK))
 627                 *stat |= FE_HAS_VITERBI;
 628         if (rd(DIB3000MB_REG_TS_SYNC_LOCK))
 629                 *stat |= (FE_HAS_SYNC | FE_HAS_LOCK);
 630
 631         deb_getf("actual status is %2x\n",*stat);
 632
 633         deb_getf("autoval: tps: %d, qam: %d, hrch: %d, alpha: %d, hp: %d, lp: %d, guard: %d, fft: %d cell: %d\n",
 634                         rd(DIB3000MB_REG_TPS_LOCK),
 635                         rd(DIB3000MB_REG_TPS_QAM),
 636                         rd(DIB3000MB_REG_TPS_HRCH),
 637                         rd(DIB3000MB_REG_TPS_VIT_ALPHA),
 638                         rd(DIB3000MB_REG_TPS_CODE_RATE_HP),
 639                         rd(DIB3000MB_REG_TPS_CODE_RATE_LP),
 640                         rd(DIB3000MB_REG_TPS_GUARD_TIME),
 641                         rd(DIB3000MB_REG_TPS_FFT),
 642                         rd(DIB3000MB_REG_TPS_CELL_ID));
 643
 644         //*stat = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK;
 645         return 0;
 646 }
 647
 648 static int dib3000mb_read_ber(struct dvb_frontend* fe, u32 *ber)
 649 {
 650         struct dib3000_state* state = fe->demodulator_priv;
 651
 652         *ber = ((rd(DIB3000MB_REG_BER_MSB) << 16) | rd(DIB3000MB_REG_BER_LSB));
 653         return 0;
 654 }
 655
 656 /* see dib3000-watch dvb-apps for exact calcuations of signal_strength and snr */
 657 static int dib3000mb_read_signal_strength(struct dvb_frontend* fe, u16 *strength)
 658 {
 659         struct dib3000_state* state = fe->demodulator_priv;
 660
 661         *strength = rd(DIB3000MB_REG_SIGNAL_POWER) * 0xffff / 0x170;
 662         return 0;
 663 }
 664
 665 static int dib3000mb_read_snr(struct dvb_frontend* fe, u16 *snr)
 666 {
 667         struct dib3000_state* state = fe->demodulator_priv;
 668         short sigpow = rd(DIB3000MB_REG_SIGNAL_POWER);
 669         int icipow = ((rd(DIB3000MB_REG_NOISE_POWER_MSB) & 0xff) << 16) |
 670                 rd(DIB3000MB_REG_NOISE_POWER_LSB);
 671         *snr = (sigpow << 8) / ((icipow > 0) ? icipow : 1);
 672         return 0;
 673 }
 674
 675 static int dib3000mb_read_unc_blocks(struct dvb_frontend* fe, u32 *unc)
 676 {
 677         struct dib3000_state* state = fe->demodulator_priv;
 678
 679         *unc = rd(DIB3000MB_REG_PACKET_ERROR_RATE);
 680         return 0;
 681 }
 682
 683 static int dib3000mb_sleep(struct dvb_frontend* fe)
 684 {
 685         struct dib3000_state* state = fe->demodulator_priv;
 686         deb_info("dib3000mb is going to bed.\n");
 687         wr(DIB3000MB_REG_POWER_CONTROL, DIB3000MB_POWER_DOWN);
 688         return 0;
 689 }
 690
 691 static int dib3000mb_fe_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings *tune)
 692 {
 693         tune->min_delay_ms = 800;
 694         return 0;
 695 }
 696
 697 static int dib3000mb_fe_init_nonmobile(struct dvb_frontend* fe)
 698 {
 699         return dib3000mb_fe_init(fe, 0);
 700 }
 701
 702 static int dib3000mb_set_frontend_and_tuner(struct dvb_frontend *fe)
 703 {
 704         return dib3000mb_set_frontend(fe, 1);
 705 }
 706
 707 static void dib3000mb_release(struct dvb_frontend* fe)
 708 {
 709         struct dib3000_state *state = fe->demodulator_priv;
 710         kfree(state);
 711 }
 712
 713 /* pid filter and transfer stuff */
 714 static int dib3000mb_pid_control(struct dvb_frontend *fe,int index, int pid,int onoff)
 715 {
 716         struct dib3000_state *state = fe->demodulator_priv;
 717         pid = (onoff ? pid | DIB3000_ACTIVATE_PID_FILTERING : 0);
 718         wr(index+DIB3000MB_REG_FIRST_PID,pid);
 719         return 0;
 720 }
 721
 722 static int dib3000mb_fifo_control(struct dvb_frontend *fe, int onoff)
 723 {
 724         struct dib3000_state *state = fe->demodulator_priv;
 725
 726         deb_xfer("%s fifo\n",onoff ? "enabling" : "disabling");
 727         if (onoff) {
 728                 wr(DIB3000MB_REG_FIFO, DIB3000MB_FIFO_ACTIVATE);
 729         } else {
 730                 wr(DIB3000MB_REG_FIFO, DIB3000MB_FIFO_INHIBIT);
 731         }
 732         return 0;
 733 }
 734
 735 static int dib3000mb_pid_parse(struct dvb_frontend *fe, int onoff)
 736 {
 737         struct dib3000_state *state = fe->demodulator_priv;
 738         deb_xfer("%s pid parsing\n",onoff ? "enabling" : "disabling");
 739         wr(DIB3000MB_REG_PID_PARSE,onoff);
 740         return 0;
 741 }
 742
 743 static int dib3000mb_tuner_pass_ctrl(struct dvb_frontend *fe, int onoff, u8 pll_addr)
 744 {
 745         struct dib3000_state *state = fe->demodulator_priv;
 746         if (onoff) {
 747                 wr(DIB3000MB_REG_TUNER, DIB3000_TUNER_WRITE_ENABLE(pll_addr));
 748         } else {
 749                 wr(DIB3000MB_REG_TUNER, DIB3000_TUNER_WRITE_DISABLE(pll_addr));
 750         }
 751         return 0;
 752 }
 753
 754 static struct dvb_frontend_ops dib3000mb_ops;
 755
 756 struct dvb_frontend* dib3000mb_attach(const struct dib3000_config* config,
 757                                       struct i2c_adapter* i2c, struct dib_fe_xfer_ops *xfer_ops)
 758 {
 759         struct dib3000_state* state = NULL;
 760
 761         /* allocate memory for the internal state */
 762         state = kzalloc(sizeof(struct dib3000_state), GFP_KERNEL);
 763         if (state == NULL)
 764                 goto error;
 765
 766         /* setup the state */
 767         state->i2c = i2c;
 768         memcpy(&state->config,config,sizeof(struct dib3000_config));
 769
 770         /* check for the correct demod */
 771         if (rd(DIB3000_REG_MANUFACTOR_ID) != DIB3000_I2C_ID_DIBCOM)
 772                 goto error;
 773
 774         if (rd(DIB3000_REG_DEVICE_ID) != DIB3000MB_DEVICE_ID)
 775                 goto error;
 776
 777         /* create dvb_frontend */
 778         memcpy(&state->frontend.ops, &dib3000mb_ops, sizeof(struct dvb_frontend_ops));
 779         state->frontend.demodulator_priv = state;
 780
 781         /* set the xfer operations */
 782         xfer_ops->pid_parse = dib3000mb_pid_parse;
 783         xfer_ops->fifo_ctrl = dib3000mb_fifo_control;
 784         xfer_ops->pid_ctrl = dib3000mb_pid_control;
 785         xfer_ops->tuner_pass_ctrl = dib3000mb_tuner_pass_ctrl;
 786
 787         return &state->frontend;
 788
 789 error:
 790         kfree(state);
 791         return NULL;
 792 }
 793
 794 static struct dvb_frontend_ops dib3000mb_ops = {
 795         .delsys = { SYS_DVBT },
 796         .info = {
 797                 .name                   = "DiBcom 3000M-B DVB-T",
 798                 .frequency_min          = 44250000,
 799                 .frequency_max          = 867250000,
 800                 .frequency_stepsize     = 62500,
 801                 .caps = FE_CAN_INVERSION_AUTO |
 802                                 FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
 803                                 FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
 804                                 FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO |
 805                                 FE_CAN_TRANSMISSION_MODE_AUTO |
 806                                 FE_CAN_GUARD_INTERVAL_AUTO |
 807                                 FE_CAN_RECOVER |
 808                                 FE_CAN_HIERARCHY_AUTO,
 809         },
 810
 811         .release = dib3000mb_release,
 812
 813         .init = dib3000mb_fe_init_nonmobile,
 814         .sleep = dib3000mb_sleep,
 815
 816         .set_frontend = dib3000mb_set_frontend_and_tuner,
 817         .get_frontend = dib3000mb_get_frontend,
 818         .get_tune_settings = dib3000mb_fe_get_tune_settings,
 819
 820         .read_status = dib3000mb_read_status,
 821         .read_ber = dib3000mb_read_ber,
 822         .read_signal_strength = dib3000mb_read_signal_strength,
 823         .read_snr = dib3000mb_read_snr,
 824         .read_ucblocks = dib3000mb_read_unc_blocks,
 825 };
 826
 827 MODULE_AUTHOR(DRIVER_AUTHOR);
 828 MODULE_DESCRIPTION(DRIVER_DESC);
 829 MODULE_LICENSE("GPL");
 830
 831 EXPORT_SYMBOL(dib3000mb_attach);