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 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  25
  26 #include <linux/kernel.h>
  27 #include <linux/module.h>
  28 #include <linux/init.h>
  29 #include <linux/delay.h>
  30 #include <linux/string.h>
  31 #include <linux/slab.h>
  32
  33 #include <media/dvb_frontend.h>
  34
  35 #include "dib3000.h"
  36 #include "dib3000mb_priv.h"
  37
  38 /* Version information */
  39 #define DRIVER_VERSION "0.1"
  40 #define DRIVER_DESC "DiBcom 3000M-B DVB-T demodulator"
  41 #define DRIVER_AUTHOR "Patrick Boettcher, patrick.boettcher@posteo.de"
  42
  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
  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 static int dib3000_read_reg(struct dib3000_state *state, u16 reg)
  56 {
  57         u8 wb[] = { ((reg >> 8) | 0x80) & 0xff, reg & 0xff };
  58         u8 rb[2];
  59         struct i2c_msg msg[] = {
  60                 { .addr = state->config.demod_address, .flags = 0,        .buf = wb, .len = 2 },
  61                 { .addr = state->config.demod_address, .flags = I2C_M_RD, .buf = rb, .len = 2 },
  62         };
  63
  64         if (i2c_transfer(state->i2c, msg, 2) != 2)
  65                 deb_i2c("i2c read error\n");
  66
  67         deb_i2c("reading i2c bus (reg: %5d 0x%04x, val: %5d 0x%04x)\n",reg,reg,
  68                         (rb[0] << 8) | rb[1],(rb[0] << 8) | rb[1]);
  69
  70         return (rb[0] << 8) | rb[1];
  71 }
  72
  73 static int dib3000_write_reg(struct dib3000_state *state, u16 reg, u16 val)
  74 {
  75         u8 b[] = {
  76                 (reg >> 8) & 0xff, reg & 0xff,
  77                 (val >> 8) & 0xff, val & 0xff,
  78         };
  79         struct i2c_msg msg[] = {
  80                 { .addr = state->config.demod_address, .flags = 0, .buf = b, .len = 4 }
  81         };
  82         deb_i2c("writing i2c bus (reg: %5d 0x%04x, val: %5d 0x%04x)\n",reg,reg,val,val);
  83
  84         return i2c_transfer(state->i2c,msg, 1) != 1 ? -EREMOTEIO : 0;
  85 }
  86
  87 static int dib3000_search_status(u16 irq,u16 lock)
  88 {
  89         if (irq & 0x02) {
  90                 if (lock & 0x01) {
  91                         deb_srch("auto search succeeded\n");
  92                         return 1; // auto search succeeded
  93                 } else {
  94                         deb_srch("auto search not successful\n");
  95                         return 0; // auto search failed
  96                 }
  97         } else if (irq & 0x01)  {
  98                 deb_srch("auto search failed\n");
  99                 return 0; // auto search failed
 100         }
 101         return -1; // try again
 102 }
 103
 104 /* for auto search */
 105 static u16 dib3000_seq[2][2][2] =     /* fft,gua,   inv   */
 106         { /* fft */
 107                 { /* gua */
 108                         { 0, 1 },                   /*  0   0   { 0,1 } */
 109                         { 3, 9 },                   /*  0   1   { 0,1 } */
 110                 },
 111                 {
 112                         { 2, 5 },                   /*  1   0   { 0,1 } */
 113                         { 6, 11 },                  /*  1   1   { 0,1 } */
 114                 }
 115         };
 116
 117 static int dib3000mb_get_frontend(struct dvb_frontend* fe,
 118                                   struct dtv_frontend_properties *c);
 119
 120 static int dib3000mb_set_frontend(struct dvb_frontend *fe, int tuner)
 121 {
 122         struct dib3000_state* state = fe->demodulator_priv;
 123         struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 124         enum fe_code_rate fe_cr = FEC_NONE;
 125         int search_state, seq;
 126
 127         if (tuner && fe->ops.tuner_ops.set_params) {
 128                 fe->ops.tuner_ops.set_params(fe);
 129                 if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0);
 130
 131                 switch (c->bandwidth_hz) {
 132                         case 8000000:
 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                                 wr_foreach(dib3000mb_reg_timing_freq, dib3000mb_timing_freq[1]);
 138                                 wr_foreach(dib3000mb_reg_bandwidth, dib3000mb_bandwidth_7mhz);
 139                                 break;
 140                         case 6000000:
 141                                 wr_foreach(dib3000mb_reg_timing_freq, dib3000mb_timing_freq[0]);
 142                                 wr_foreach(dib3000mb_reg_bandwidth, dib3000mb_bandwidth_6mhz);
 143                                 break;
 144                         case 0:
 145                                 return -EOPNOTSUPP;
 146                         default:
 147                                 pr_err("unknown bandwidth value.\n");
 148                                 return -EINVAL;
 149                 }
 150                 deb_setf("bandwidth: %d MHZ\n", c->bandwidth_hz / 1000000);
 151         }
 152         wr(DIB3000MB_REG_LOCK1_MASK, DIB3000MB_LOCK1_SEARCH_4);
 153
 154         switch (c->transmission_mode) {
 155                 case TRANSMISSION_MODE_2K:
 156                         deb_setf("transmission mode: 2k\n");
 157                         wr(DIB3000MB_REG_FFT, DIB3000_TRANSMISSION_MODE_2K);
 158                         break;
 159                 case TRANSMISSION_MODE_8K:
 160                         deb_setf("transmission mode: 8k\n");
 161                         wr(DIB3000MB_REG_FFT, DIB3000_TRANSMISSION_MODE_8K);
 162                         break;
 163                 case TRANSMISSION_MODE_AUTO:
 164                         deb_setf("transmission mode: auto\n");
 165                         break;
 166                 default:
 167                         return -EINVAL;
 168         }
 169
 170         switch (c->guard_interval) {
 171                 case GUARD_INTERVAL_1_32:
 172                         deb_setf("guard 1_32\n");
 173                         wr(DIB3000MB_REG_GUARD_TIME, DIB3000_GUARD_TIME_1_32);
 174                         break;
 175                 case GUARD_INTERVAL_1_16:
 176                         deb_setf("guard 1_16\n");
 177                         wr(DIB3000MB_REG_GUARD_TIME, DIB3000_GUARD_TIME_1_16);
 178                         break;
 179                 case GUARD_INTERVAL_1_8:
 180                         deb_setf("guard 1_8\n");
 181                         wr(DIB3000MB_REG_GUARD_TIME, DIB3000_GUARD_TIME_1_8);
 182                         break;
 183                 case GUARD_INTERVAL_1_4:
 184                         deb_setf("guard 1_4\n");
 185                         wr(DIB3000MB_REG_GUARD_TIME, DIB3000_GUARD_TIME_1_4);
 186                         break;
 187                 case GUARD_INTERVAL_AUTO:
 188                         deb_setf("guard auto\n");
 189                         break;
 190                 default:
 191                         return -EINVAL;
 192         }
 193
 194         switch (c->inversion) {
 195                 case INVERSION_OFF:
 196                         deb_setf("inversion off\n");
 197                         wr(DIB3000MB_REG_DDS_INV, DIB3000_DDS_INVERSION_OFF);
 198                         break;
 199                 case INVERSION_AUTO:
 200                         deb_setf("inversion auto\n");
 201                         break;
 202                 case INVERSION_ON:
 203                         deb_setf("inversion on\n");
 204                         wr(DIB3000MB_REG_DDS_INV, DIB3000_DDS_INVERSION_ON);
 205                         break;
 206                 default:
 207                         return -EINVAL;
 208         }
 209
 210         switch (c->modulation) {
 211                 case QPSK:
 212                         deb_setf("modulation: qpsk\n");
 213                         wr(DIB3000MB_REG_QAM, DIB3000_CONSTELLATION_QPSK);
 214                         break;
 215                 case QAM_16:
 216                         deb_setf("modulation: qam16\n");
 217                         wr(DIB3000MB_REG_QAM, DIB3000_CONSTELLATION_16QAM);
 218                         break;
 219                 case QAM_64:
 220                         deb_setf("modulation: qam64\n");
 221                         wr(DIB3000MB_REG_QAM, DIB3000_CONSTELLATION_64QAM);
 222                         break;
 223                 case QAM_AUTO:
 224                         break;
 225                 default:
 226                         return -EINVAL;
 227         }
 228         switch (c->hierarchy) {
 229                 case HIERARCHY_NONE:
 230                         deb_setf("hierarchy: none\n");
 231                         /* fall through */
 232                 case HIERARCHY_1:
 233                         deb_setf("hierarchy: alpha=1\n");
 234                         wr(DIB3000MB_REG_VIT_ALPHA, DIB3000_ALPHA_1);
 235                         break;
 236                 case HIERARCHY_2:
 237                         deb_setf("hierarchy: alpha=2\n");
 238                         wr(DIB3000MB_REG_VIT_ALPHA, DIB3000_ALPHA_2);
 239                         break;
 240                 case HIERARCHY_4:
 241                         deb_setf("hierarchy: alpha=4\n");
 242                         wr(DIB3000MB_REG_VIT_ALPHA, DIB3000_ALPHA_4);
 243                         break;
 244                 case HIERARCHY_AUTO:
 245                         deb_setf("hierarchy: alpha=auto\n");
 246                         break;
 247                 default:
 248                         return -EINVAL;
 249         }
 250
 251         if (c->hierarchy == HIERARCHY_NONE) {
 252                 wr(DIB3000MB_REG_VIT_HRCH, DIB3000_HRCH_OFF);
 253                 wr(DIB3000MB_REG_VIT_HP, DIB3000_SELECT_HP);
 254                 fe_cr = c->code_rate_HP;
 255         } else if (c->hierarchy != HIERARCHY_AUTO) {
 256                 wr(DIB3000MB_REG_VIT_HRCH, DIB3000_HRCH_ON);
 257                 wr(DIB3000MB_REG_VIT_HP, DIB3000_SELECT_LP);
 258                 fe_cr = c->code_rate_LP;
 259         }
 260         switch (fe_cr) {
 261                 case FEC_1_2:
 262                         deb_setf("fec: 1_2\n");
 263                         wr(DIB3000MB_REG_VIT_CODE_RATE, DIB3000_FEC_1_2);
 264                         break;
 265                 case FEC_2_3:
 266                         deb_setf("fec: 2_3\n");
 267                         wr(DIB3000MB_REG_VIT_CODE_RATE, DIB3000_FEC_2_3);
 268                         break;
 269                 case FEC_3_4:
 270                         deb_setf("fec: 3_4\n");
 271                         wr(DIB3000MB_REG_VIT_CODE_RATE, DIB3000_FEC_3_4);
 272                         break;
 273                 case FEC_5_6:
 274                         deb_setf("fec: 5_6\n");
 275                         wr(DIB3000MB_REG_VIT_CODE_RATE, DIB3000_FEC_5_6);
 276                         break;
 277                 case FEC_7_8:
 278                         deb_setf("fec: 7_8\n");
 279                         wr(DIB3000MB_REG_VIT_CODE_RATE, DIB3000_FEC_7_8);
 280                         break;
 281                 case FEC_NONE:
 282                         deb_setf("fec: none\n");
 283                         break;
 284                 case FEC_AUTO:
 285                         deb_setf("fec: auto\n");
 286                         break;
 287                 default:
 288                         return -EINVAL;
 289         }
 290
 291         seq = dib3000_seq
 292                 [c->transmission_mode == TRANSMISSION_MODE_AUTO]
 293                 [c->guard_interval == GUARD_INTERVAL_AUTO]
 294                 [c->inversion == INVERSION_AUTO];
 295
 296         deb_setf("seq? %d\n", seq);
 297
 298         wr(DIB3000MB_REG_SEQ, seq);
 299
 300         wr(DIB3000MB_REG_ISI, seq ? DIB3000MB_ISI_INHIBIT : DIB3000MB_ISI_ACTIVATE);
 301
 302         if (c->transmission_mode == TRANSMISSION_MODE_2K) {
 303                 if (c->guard_interval == GUARD_INTERVAL_1_8) {
 304                         wr(DIB3000MB_REG_SYNC_IMPROVEMENT, DIB3000MB_SYNC_IMPROVE_2K_1_8);
 305                 } else {
 306                         wr(DIB3000MB_REG_SYNC_IMPROVEMENT, DIB3000MB_SYNC_IMPROVE_DEFAULT);
 307                 }
 308
 309                 wr(DIB3000MB_REG_UNK_121, DIB3000MB_UNK_121_2K);
 310         } else {
 311                 wr(DIB3000MB_REG_UNK_121, DIB3000MB_UNK_121_DEFAULT);
 312         }
 313
 314         wr(DIB3000MB_REG_MOBILE_ALGO, DIB3000MB_MOBILE_ALGO_OFF);
 315         wr(DIB3000MB_REG_MOBILE_MODE_QAM, DIB3000MB_MOBILE_MODE_QAM_OFF);
 316         wr(DIB3000MB_REG_MOBILE_MODE, DIB3000MB_MOBILE_MODE_OFF);
 317
 318         wr_foreach(dib3000mb_reg_agc_bandwidth, dib3000mb_agc_bandwidth_high);
 319
 320         wr(DIB3000MB_REG_ISI, DIB3000MB_ISI_ACTIVATE);
 321
 322         wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_AGC + DIB3000MB_RESTART_CTRL);
 323         wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_OFF);
 324
 325         /* wait for AGC lock */
 326         msleep(70);
 327
 328         wr_foreach(dib3000mb_reg_agc_bandwidth, dib3000mb_agc_bandwidth_low);
 329
 330         /* something has to be auto searched */
 331         if (c->modulation == QAM_AUTO ||
 332                 c->hierarchy == HIERARCHY_AUTO ||
 333                 fe_cr == FEC_AUTO ||
 334                 c->inversion == INVERSION_AUTO) {
 335                 int as_count=0;
 336
 337                 deb_setf("autosearch enabled.\n");
 338
 339                 wr(DIB3000MB_REG_ISI, DIB3000MB_ISI_INHIBIT);
 340
 341                 wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_AUTO_SEARCH);
 342                 wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_OFF);
 343
 344                 while ((search_state =
 345                                 dib3000_search_status(
 346                                         rd(DIB3000MB_REG_AS_IRQ_PENDING),
 347                                         rd(DIB3000MB_REG_LOCK2_VALUE))) < 0 && as_count++ < 100)
 348                         msleep(1);
 349
 350                 deb_setf("search_state after autosearch %d after %d checks\n",
 351                          search_state, as_count);
 352
 353                 if (search_state == 1) {
 354                         if (dib3000mb_get_frontend(fe, c) == 0) {
 355                                 deb_setf("reading tuning data from frontend succeeded.\n");
 356                                 return dib3000mb_set_frontend(fe, 0);
 357                         }
 358                 }
 359
 360         } else {
 361                 wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_CTRL);
 362                 wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_OFF);
 363         }
 364
 365         return 0;
 366 }
 367
 368 static int dib3000mb_fe_init(struct dvb_frontend* fe, int mobile_mode)
 369 {
 370         struct dib3000_state* state = fe->demodulator_priv;
 371
 372         deb_info("dib3000mb is getting up.\n");
 373         wr(DIB3000MB_REG_POWER_CONTROL, DIB3000MB_POWER_UP);
 374
 375         wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_AGC);
 376
 377         wr(DIB3000MB_REG_RESET_DEVICE, DIB3000MB_RESET_DEVICE);
 378         wr(DIB3000MB_REG_RESET_DEVICE, DIB3000MB_RESET_DEVICE_RST);
 379
 380         wr(DIB3000MB_REG_CLOCK, DIB3000MB_CLOCK_DEFAULT);
 381
 382         wr(DIB3000MB_REG_ELECT_OUT_MODE, DIB3000MB_ELECT_OUT_MODE_ON);
 383
 384         wr(DIB3000MB_REG_DDS_FREQ_MSB, DIB3000MB_DDS_FREQ_MSB);
 385         wr(DIB3000MB_REG_DDS_FREQ_LSB, DIB3000MB_DDS_FREQ_LSB);
 386
 387         wr_foreach(dib3000mb_reg_timing_freq, dib3000mb_timing_freq[2]);
 388
 389         wr_foreach(dib3000mb_reg_impulse_noise,
 390                         dib3000mb_impulse_noise_values[DIB3000MB_IMPNOISE_OFF]);
 391
 392         wr_foreach(dib3000mb_reg_agc_gain, dib3000mb_default_agc_gain);
 393
 394         wr(DIB3000MB_REG_PHASE_NOISE, DIB3000MB_PHASE_NOISE_DEFAULT);
 395
 396         wr_foreach(dib3000mb_reg_phase_noise, dib3000mb_default_noise_phase);
 397
 398         wr_foreach(dib3000mb_reg_lock_duration, dib3000mb_default_lock_duration);
 399
 400         wr_foreach(dib3000mb_reg_agc_bandwidth, dib3000mb_agc_bandwidth_low);
 401
 402         wr(DIB3000MB_REG_LOCK0_MASK, DIB3000MB_LOCK0_DEFAULT);
 403         wr(DIB3000MB_REG_LOCK1_MASK, DIB3000MB_LOCK1_SEARCH_4);
 404         wr(DIB3000MB_REG_LOCK2_MASK, DIB3000MB_LOCK2_DEFAULT);
 405         wr(DIB3000MB_REG_SEQ, dib3000_seq[1][1][1]);
 406
 407         wr_foreach(dib3000mb_reg_bandwidth, dib3000mb_bandwidth_8mhz);
 408
 409         wr(DIB3000MB_REG_UNK_68, DIB3000MB_UNK_68);
 410         wr(DIB3000MB_REG_UNK_69, DIB3000MB_UNK_69);
 411         wr(DIB3000MB_REG_UNK_71, DIB3000MB_UNK_71);
 412         wr(DIB3000MB_REG_UNK_77, DIB3000MB_UNK_77);
 413         wr(DIB3000MB_REG_UNK_78, DIB3000MB_UNK_78);
 414         wr(DIB3000MB_REG_ISI, DIB3000MB_ISI_INHIBIT);
 415         wr(DIB3000MB_REG_UNK_92, DIB3000MB_UNK_92);
 416         wr(DIB3000MB_REG_UNK_96, DIB3000MB_UNK_96);
 417         wr(DIB3000MB_REG_UNK_97, DIB3000MB_UNK_97);
 418         wr(DIB3000MB_REG_UNK_106, DIB3000MB_UNK_106);
 419         wr(DIB3000MB_REG_UNK_107, DIB3000MB_UNK_107);
 420         wr(DIB3000MB_REG_UNK_108, DIB3000MB_UNK_108);
 421         wr(DIB3000MB_REG_UNK_122, DIB3000MB_UNK_122);
 422         wr(DIB3000MB_REG_MOBILE_MODE_QAM, DIB3000MB_MOBILE_MODE_QAM_OFF);
 423         wr(DIB3000MB_REG_BERLEN, DIB3000MB_BERLEN_DEFAULT);
 424
 425         wr_foreach(dib3000mb_reg_filter_coeffs, dib3000mb_filter_coeffs);
 426
 427         wr(DIB3000MB_REG_MOBILE_ALGO, DIB3000MB_MOBILE_ALGO_ON);
 428         wr(DIB3000MB_REG_MULTI_DEMOD_MSB, DIB3000MB_MULTI_DEMOD_MSB);
 429         wr(DIB3000MB_REG_MULTI_DEMOD_LSB, DIB3000MB_MULTI_DEMOD_LSB);
 430
 431         wr(DIB3000MB_REG_OUTPUT_MODE, DIB3000MB_OUTPUT_MODE_SLAVE);
 432
 433         wr(DIB3000MB_REG_FIFO_142, DIB3000MB_FIFO_142);
 434         wr(DIB3000MB_REG_MPEG2_OUT_MODE, DIB3000MB_MPEG2_OUT_MODE_188);
 435         wr(DIB3000MB_REG_PID_PARSE, DIB3000MB_PID_PARSE_ACTIVATE);
 436         wr(DIB3000MB_REG_FIFO, DIB3000MB_FIFO_INHIBIT);
 437         wr(DIB3000MB_REG_FIFO_146, DIB3000MB_FIFO_146);
 438         wr(DIB3000MB_REG_FIFO_147, DIB3000MB_FIFO_147);
 439
 440         wr(DIB3000MB_REG_DATA_IN_DIVERSITY, DIB3000MB_DATA_DIVERSITY_IN_OFF);
 441
 442         return 0;
 443 }
 444
 445 static int dib3000mb_get_frontend(struct dvb_frontend* fe,
 446                                   struct dtv_frontend_properties *c)
 447 {
 448         struct dib3000_state* state = fe->demodulator_priv;
 449         enum fe_code_rate *cr;
 450         u16 tps_val;
 451         int inv_test1,inv_test2;
 452         u32 dds_val, threshold = 0x800000;
 453
 454         if (!rd(DIB3000MB_REG_TPS_LOCK))
 455                 return 0;
 456
 457         dds_val = ((rd(DIB3000MB_REG_DDS_VALUE_MSB) & 0xff) << 16) + rd(DIB3000MB_REG_DDS_VALUE_LSB);
 458         deb_getf("DDS_VAL: %x %x %x\n", dds_val, rd(DIB3000MB_REG_DDS_VALUE_MSB), rd(DIB3000MB_REG_DDS_VALUE_LSB));
 459         if (dds_val < threshold)
 460                 inv_test1 = 0;
 461         else if (dds_val == threshold)
 462                 inv_test1 = 1;
 463         else
 464                 inv_test1 = 2;
 465
 466         dds_val = ((rd(DIB3000MB_REG_DDS_FREQ_MSB) & 0xff) << 16) + rd(DIB3000MB_REG_DDS_FREQ_LSB);
 467         deb_getf("DDS_FREQ: %x %x %x\n", dds_val, rd(DIB3000MB_REG_DDS_FREQ_MSB), rd(DIB3000MB_REG_DDS_FREQ_LSB));
 468         if (dds_val < threshold)
 469                 inv_test2 = 0;
 470         else if (dds_val == threshold)
 471                 inv_test2 = 1;
 472         else
 473                 inv_test2 = 2;
 474
 475         c->inversion =
 476                 ((inv_test2 == 2) && (inv_test1==1 || inv_test1==0)) ||
 477                 ((inv_test2 == 0) && (inv_test1==1 || inv_test1==2)) ?
 478                 INVERSION_ON : INVERSION_OFF;
 479
 480         deb_getf("inversion %d %d, %d\n", inv_test2, inv_test1, c->inversion);
 481
 482         switch ((tps_val = rd(DIB3000MB_REG_TPS_QAM))) {
 483                 case DIB3000_CONSTELLATION_QPSK:
 484                         deb_getf("QPSK\n");
 485                         c->modulation = QPSK;
 486                         break;
 487                 case DIB3000_CONSTELLATION_16QAM:
 488                         deb_getf("QAM16\n");
 489                         c->modulation = QAM_16;
 490                         break;
 491                 case DIB3000_CONSTELLATION_64QAM:
 492                         deb_getf("QAM64\n");
 493                         c->modulation = QAM_64;
 494                         break;
 495                 default:
 496                         pr_err("Unexpected constellation returned by TPS (%d)\n", tps_val);
 497                         break;
 498         }
 499         deb_getf("TPS: %d\n", tps_val);
 500
 501         if (rd(DIB3000MB_REG_TPS_HRCH)) {
 502                 deb_getf("HRCH ON\n");
 503                 cr = &c->code_rate_LP;
 504                 c->code_rate_HP = FEC_NONE;
 505                 switch ((tps_val = rd(DIB3000MB_REG_TPS_VIT_ALPHA))) {
 506                         case DIB3000_ALPHA_0:
 507                                 deb_getf("HIERARCHY_NONE\n");
 508                                 c->hierarchy = HIERARCHY_NONE;
 509                                 break;
 510                         case DIB3000_ALPHA_1:
 511                                 deb_getf("HIERARCHY_1\n");
 512                                 c->hierarchy = HIERARCHY_1;
 513                                 break;
 514                         case DIB3000_ALPHA_2:
 515                                 deb_getf("HIERARCHY_2\n");
 516                                 c->hierarchy = HIERARCHY_2;
 517                                 break;
 518                         case DIB3000_ALPHA_4:
 519                                 deb_getf("HIERARCHY_4\n");
 520                                 c->hierarchy = HIERARCHY_4;
 521                                 break;
 522                         default:
 523                                 pr_err("Unexpected ALPHA value returned by TPS (%d)\n", tps_val);
 524                                 break;
 525                 }
 526                 deb_getf("TPS: %d\n", tps_val);
 527
 528                 tps_val = rd(DIB3000MB_REG_TPS_CODE_RATE_LP);
 529         } else {
 530                 deb_getf("HRCH OFF\n");
 531                 cr = &c->code_rate_HP;
 532                 c->code_rate_LP = FEC_NONE;
 533                 c->hierarchy = HIERARCHY_NONE;
 534
 535                 tps_val = rd(DIB3000MB_REG_TPS_CODE_RATE_HP);
 536         }
 537
 538         switch (tps_val) {
 539                 case DIB3000_FEC_1_2:
 540                         deb_getf("FEC_1_2\n");
 541                         *cr = FEC_1_2;
 542                         break;
 543                 case DIB3000_FEC_2_3:
 544                         deb_getf("FEC_2_3\n");
 545                         *cr = FEC_2_3;
 546                         break;
 547                 case DIB3000_FEC_3_4:
 548                         deb_getf("FEC_3_4\n");
 549                         *cr = FEC_3_4;
 550                         break;
 551                 case DIB3000_FEC_5_6:
 552                         deb_getf("FEC_5_6\n");
 553                         *cr = FEC_4_5;
 554                         break;
 555                 case DIB3000_FEC_7_8:
 556                         deb_getf("FEC_7_8\n");
 557                         *cr = FEC_7_8;
 558                         break;
 559                 default:
 560                         pr_err("Unexpected FEC returned by TPS (%d)\n", tps_val);
 561                         break;
 562         }
 563         deb_getf("TPS: %d\n",tps_val);
 564
 565         switch ((tps_val = rd(DIB3000MB_REG_TPS_GUARD_TIME))) {
 566                 case DIB3000_GUARD_TIME_1_32:
 567                         deb_getf("GUARD_INTERVAL_1_32\n");
 568                         c->guard_interval = GUARD_INTERVAL_1_32;
 569                         break;
 570                 case DIB3000_GUARD_TIME_1_16:
 571                         deb_getf("GUARD_INTERVAL_1_16\n");
 572                         c->guard_interval = GUARD_INTERVAL_1_16;
 573                         break;
 574                 case DIB3000_GUARD_TIME_1_8:
 575                         deb_getf("GUARD_INTERVAL_1_8\n");
 576                         c->guard_interval = GUARD_INTERVAL_1_8;
 577                         break;
 578                 case DIB3000_GUARD_TIME_1_4:
 579                         deb_getf("GUARD_INTERVAL_1_4\n");
 580                         c->guard_interval = GUARD_INTERVAL_1_4;
 581                         break;
 582                 default:
 583                         pr_err("Unexpected Guard Time returned by TPS (%d)\n", tps_val);
 584                         break;
 585         }
 586         deb_getf("TPS: %d\n", tps_val);
 587
 588         switch ((tps_val = rd(DIB3000MB_REG_TPS_FFT))) {
 589                 case DIB3000_TRANSMISSION_MODE_2K:
 590                         deb_getf("TRANSMISSION_MODE_2K\n");
 591                         c->transmission_mode = TRANSMISSION_MODE_2K;
 592                         break;
 593                 case DIB3000_TRANSMISSION_MODE_8K:
 594                         deb_getf("TRANSMISSION_MODE_8K\n");
 595                         c->transmission_mode = TRANSMISSION_MODE_8K;
 596                         break;
 597                 default:
 598                         pr_err("unexpected transmission mode return by TPS (%d)\n", tps_val);
 599                         break;
 600         }
 601         deb_getf("TPS: %d\n", tps_val);
 602
 603         return 0;
 604 }
 605
 606 static int dib3000mb_read_status(struct dvb_frontend *fe,
 607                                  enum fe_status *stat)
 608 {
 609         struct dib3000_state* state = fe->demodulator_priv;
 610
 611         *stat = 0;
 612
 613         if (rd(DIB3000MB_REG_AGC_LOCK))
 614                 *stat |= FE_HAS_SIGNAL;
 615         if (rd(DIB3000MB_REG_CARRIER_LOCK))
 616                 *stat |= FE_HAS_CARRIER;
 617         if (rd(DIB3000MB_REG_VIT_LCK))
 618                 *stat |= FE_HAS_VITERBI;
 619         if (rd(DIB3000MB_REG_TS_SYNC_LOCK))
 620                 *stat |= (FE_HAS_SYNC | FE_HAS_LOCK);
 621
 622         deb_getf("actual status is %2x\n",*stat);
 623
 624         deb_getf("autoval: tps: %d, qam: %d, hrch: %d, alpha: %d, hp: %d, lp: %d, guard: %d, fft: %d cell: %d\n",
 625                         rd(DIB3000MB_REG_TPS_LOCK),
 626                         rd(DIB3000MB_REG_TPS_QAM),
 627                         rd(DIB3000MB_REG_TPS_HRCH),
 628                         rd(DIB3000MB_REG_TPS_VIT_ALPHA),
 629                         rd(DIB3000MB_REG_TPS_CODE_RATE_HP),
 630                         rd(DIB3000MB_REG_TPS_CODE_RATE_LP),
 631                         rd(DIB3000MB_REG_TPS_GUARD_TIME),
 632                         rd(DIB3000MB_REG_TPS_FFT),
 633                         rd(DIB3000MB_REG_TPS_CELL_ID));
 634
 635         //*stat = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK;
 636         return 0;
 637 }
 638
 639 static int dib3000mb_read_ber(struct dvb_frontend* fe, u32 *ber)
 640 {
 641         struct dib3000_state* state = fe->demodulator_priv;
 642
 643         *ber = ((rd(DIB3000MB_REG_BER_MSB) << 16) | rd(DIB3000MB_REG_BER_LSB));
 644         return 0;
 645 }
 646
 647 /* see dib3000-watch dvb-apps for exact calcuations of signal_strength and snr */
 648 static int dib3000mb_read_signal_strength(struct dvb_frontend* fe, u16 *strength)
 649 {
 650         struct dib3000_state* state = fe->demodulator_priv;
 651
 652         *strength = rd(DIB3000MB_REG_SIGNAL_POWER) * 0xffff / 0x170;
 653         return 0;
 654 }
 655
 656 static int dib3000mb_read_snr(struct dvb_frontend* fe, u16 *snr)
 657 {
 658         struct dib3000_state* state = fe->demodulator_priv;
 659         short sigpow = rd(DIB3000MB_REG_SIGNAL_POWER);
 660         int icipow = ((rd(DIB3000MB_REG_NOISE_POWER_MSB) & 0xff) << 16) |
 661                 rd(DIB3000MB_REG_NOISE_POWER_LSB);
 662         *snr = (sigpow << 8) / ((icipow > 0) ? icipow : 1);
 663         return 0;
 664 }
 665
 666 static int dib3000mb_read_unc_blocks(struct dvb_frontend* fe, u32 *unc)
 667 {
 668         struct dib3000_state* state = fe->demodulator_priv;
 669
 670         *unc = rd(DIB3000MB_REG_PACKET_ERROR_RATE);
 671         return 0;
 672 }
 673
 674 static int dib3000mb_sleep(struct dvb_frontend* fe)
 675 {
 676         struct dib3000_state* state = fe->demodulator_priv;
 677         deb_info("dib3000mb is going to bed.\n");
 678         wr(DIB3000MB_REG_POWER_CONTROL, DIB3000MB_POWER_DOWN);
 679         return 0;
 680 }
 681
 682 static int dib3000mb_fe_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings *tune)
 683 {
 684         tune->min_delay_ms = 800;
 685         return 0;
 686 }
 687
 688 static int dib3000mb_fe_init_nonmobile(struct dvb_frontend* fe)
 689 {
 690         return dib3000mb_fe_init(fe, 0);
 691 }
 692
 693 static int dib3000mb_set_frontend_and_tuner(struct dvb_frontend *fe)
 694 {
 695         return dib3000mb_set_frontend(fe, 1);
 696 }
 697
 698 static void dib3000mb_release(struct dvb_frontend* fe)
 699 {
 700         struct dib3000_state *state = fe->demodulator_priv;
 701         kfree(state);
 702 }
 703
 704 /* pid filter and transfer stuff */
 705 static int dib3000mb_pid_control(struct dvb_frontend *fe,int index, int pid,int onoff)
 706 {
 707         struct dib3000_state *state = fe->demodulator_priv;
 708         pid = (onoff ? pid | DIB3000_ACTIVATE_PID_FILTERING : 0);
 709         wr(index+DIB3000MB_REG_FIRST_PID,pid);
 710         return 0;
 711 }
 712
 713 static int dib3000mb_fifo_control(struct dvb_frontend *fe, int onoff)
 714 {
 715         struct dib3000_state *state = fe->demodulator_priv;
 716
 717         deb_xfer("%s fifo\n",onoff ? "enabling" : "disabling");
 718         if (onoff) {
 719                 wr(DIB3000MB_REG_FIFO, DIB3000MB_FIFO_ACTIVATE);
 720         } else {
 721                 wr(DIB3000MB_REG_FIFO, DIB3000MB_FIFO_INHIBIT);
 722         }
 723         return 0;
 724 }
 725
 726 static int dib3000mb_pid_parse(struct dvb_frontend *fe, int onoff)
 727 {
 728         struct dib3000_state *state = fe->demodulator_priv;
 729         deb_xfer("%s pid parsing\n",onoff ? "enabling" : "disabling");
 730         wr(DIB3000MB_REG_PID_PARSE,onoff);
 731         return 0;
 732 }
 733
 734 static int dib3000mb_tuner_pass_ctrl(struct dvb_frontend *fe, int onoff, u8 pll_addr)
 735 {
 736         struct dib3000_state *state = fe->demodulator_priv;
 737         if (onoff) {
 738                 wr(DIB3000MB_REG_TUNER, DIB3000_TUNER_WRITE_ENABLE(pll_addr));
 739         } else {
 740                 wr(DIB3000MB_REG_TUNER, DIB3000_TUNER_WRITE_DISABLE(pll_addr));
 741         }
 742         return 0;
 743 }
 744
 745 static const struct dvb_frontend_ops dib3000mb_ops;
 746
 747 struct dvb_frontend* dib3000mb_attach(const struct dib3000_config* config,
 748                                       struct i2c_adapter* i2c, struct dib_fe_xfer_ops *xfer_ops)
 749 {
 750         struct dib3000_state* state = NULL;
 751
 752         /* allocate memory for the internal state */
 753         state = kzalloc(sizeof(struct dib3000_state), GFP_KERNEL);
 754         if (state == NULL)
 755                 goto error;
 756
 757         /* setup the state */
 758         state->i2c = i2c;
 759         memcpy(&state->config,config,sizeof(struct dib3000_config));
 760
 761         /* check for the correct demod */
 762         if (rd(DIB3000_REG_MANUFACTOR_ID) != DIB3000_I2C_ID_DIBCOM)
 763                 goto error;
 764
 765         if (rd(DIB3000_REG_DEVICE_ID) != DIB3000MB_DEVICE_ID)
 766                 goto error;
 767
 768         /* create dvb_frontend */
 769         memcpy(&state->frontend.ops, &dib3000mb_ops, sizeof(struct dvb_frontend_ops));
 770         state->frontend.demodulator_priv = state;
 771
 772         /* set the xfer operations */
 773         xfer_ops->pid_parse = dib3000mb_pid_parse;
 774         xfer_ops->fifo_ctrl = dib3000mb_fifo_control;
 775         xfer_ops->pid_ctrl = dib3000mb_pid_control;
 776         xfer_ops->tuner_pass_ctrl = dib3000mb_tuner_pass_ctrl;
 777
 778         return &state->frontend;
 779
 780 error:
 781         kfree(state);
 782         return NULL;
 783 }
 784
 785 static const struct dvb_frontend_ops dib3000mb_ops = {
 786         .delsys = { SYS_DVBT },
 787         .info = {
 788                 .name                   = "DiBcom 3000M-B DVB-T",
 789                 .frequency_min          = 44250000,
 790                 .frequency_max          = 867250000,
 791                 .frequency_stepsize     = 62500,
 792                 .caps = FE_CAN_INVERSION_AUTO |
 793                                 FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
 794                                 FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
 795                                 FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO |
 796                                 FE_CAN_TRANSMISSION_MODE_AUTO |
 797                                 FE_CAN_GUARD_INTERVAL_AUTO |
 798                                 FE_CAN_RECOVER |
 799                                 FE_CAN_HIERARCHY_AUTO,
 800         },
 801
 802         .release = dib3000mb_release,
 803
 804         .init = dib3000mb_fe_init_nonmobile,
 805         .sleep = dib3000mb_sleep,
 806
 807         .set_frontend = dib3000mb_set_frontend_and_tuner,
 808         .get_frontend = dib3000mb_get_frontend,
 809         .get_tune_settings = dib3000mb_fe_get_tune_settings,
 810
 811         .read_status = dib3000mb_read_status,
 812         .read_ber = dib3000mb_read_ber,
 813         .read_signal_strength = dib3000mb_read_signal_strength,
 814         .read_snr = dib3000mb_read_snr,
 815         .read_ucblocks = dib3000mb_read_unc_blocks,
 816 };
 817
 818 MODULE_AUTHOR(DRIVER_AUTHOR);
 819 MODULE_DESCRIPTION(DRIVER_DESC);
 820 MODULE_LICENSE("GPL");
 821
 822 EXPORT_SYMBOL(dib3000mb_attach);