drivers/media/dvb/frontends/dib7000m.c

   1 /*
   2  * Linux-DVB Driver for DiBcom's DiB7000M and
   3  *              first generation DiB7000P-demodulator-family.
   4  *
   5  * Copyright (C) 2005-6 DiBcom (http://www.dibcom.fr/)
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  *      modify it under the terms of the GNU General Public License as
   9  *      published by the Free Software Foundation, version 2.
  10  */
  11 #include <linux/kernel.h>
  12 #include <linux/i2c.h>
  13
  14 #include "dvb_frontend.h"
  15
  16 #include "dib7000m.h"
  17
  18 static int debug;
  19 module_param(debug, int, 0644);
  20 MODULE_PARM_DESC(debug, "turn on debugging (default: 0)");
  21
  22 #define dprintk(args...) do { if (debug) { printk(KERN_DEBUG "DiB7000M:"); printk(args); } } while (0)
  23
  24 struct dib7000m_state {
  25         struct dvb_frontend demod;
  26     struct dib7000m_config cfg;
  27
  28         u8 i2c_addr;
  29         struct i2c_adapter   *i2c_adap;
  30
  31         struct dibx000_i2c_master i2c_master;
  32
  33 /* offset is 1 in case of the 7000MC */
  34         u8 reg_offs;
  35
  36         u16 wbd_ref;
  37
  38         u8 current_band;
  39         fe_bandwidth_t current_bandwidth;
  40         struct dibx000_agc_config *current_agc;
  41         u32 timf;
  42
  43         u16 revision;
  44 };
  45
  46 enum dib7000m_power_mode {
  47         DIB7000M_POWER_ALL = 0,
  48
  49         DIB7000M_POWER_NO,
  50         DIB7000M_POWER_INTERF_ANALOG_AGC,
  51         DIB7000M_POWER_COR4_DINTLV_ICIRM_EQUAL_CFROD,
  52         DIB7000M_POWER_COR4_CRY_ESRAM_MOUT_NUD,
  53         DIB7000M_POWER_INTERFACE_ONLY,
  54 };
  55
  56 static u16 dib7000m_read_word(struct dib7000m_state *state, u16 reg)
  57 {
  58         u8 wb[2] = { (reg >> 8) | 0x80, reg & 0xff };
  59         u8 rb[2];
  60         struct i2c_msg msg[2] = {
  61                 { .addr = state->i2c_addr >> 1, .flags = 0,        .buf = wb, .len = 2 },
  62                 { .addr = state->i2c_addr >> 1, .flags = I2C_M_RD, .buf = rb, .len = 2 },
  63         };
  64
  65         if (i2c_transfer(state->i2c_adap, msg, 2) != 2)
  66                 dprintk("i2c read error on %d\n",reg);
  67
  68         return (rb[0] << 8) | rb[1];
  69 }
  70
  71 static int dib7000m_write_word(struct dib7000m_state *state, u16 reg, u16 val)
  72 {
  73         u8 b[4] = {
  74                 (reg >> 8) & 0xff, reg & 0xff,
  75                 (val >> 8) & 0xff, val & 0xff,
  76         };
  77         struct i2c_msg msg = {
  78                 .addr = state->i2c_addr >> 1, .flags = 0, .buf = b, .len = 4
  79         };
  80         return i2c_transfer(state->i2c_adap, &msg, 1) != 1 ? -EREMOTEIO : 0;
  81 }
  82 static int dib7000m_set_output_mode(struct dib7000m_state *state, int mode)
  83 {
  84         int    ret = 0;
  85         u16 outreg, fifo_threshold, smo_mode,
  86                 sram = 0x0005; /* by default SRAM output is disabled */
  87
  88         outreg = 0;
  89         fifo_threshold = 1792;
  90         smo_mode = (dib7000m_read_word(state, 294 + state->reg_offs) & 0x0010) | (1 << 1);
  91
  92         dprintk("-I-  Setting output mode for demod %p to %d\n",
  93                         &state->demod, mode);
  94
  95         switch (mode) {
  96                 case OUTMODE_MPEG2_PAR_GATED_CLK:   // STBs with parallel gated clock
  97                         outreg = (1 << 10);  /* 0x0400 */
  98                         break;
  99                 case OUTMODE_MPEG2_PAR_CONT_CLK:    // STBs with parallel continues clock
 100                         outreg = (1 << 10) | (1 << 6); /* 0x0440 */
 101                         break;
 102                 case OUTMODE_MPEG2_SERIAL:          // STBs with serial input
 103                         outreg = (1 << 10) | (2 << 6) | (0 << 1); /* 0x0482 */
 104                         break;
 105                 case OUTMODE_DIVERSITY:
 106                         if (state->cfg.hostbus_diversity)
 107                                 outreg = (1 << 10) | (4 << 6); /* 0x0500 */
 108                         else
 109                                 sram   |= 0x0c00;
 110                         break;
 111                 case OUTMODE_MPEG2_FIFO:            // e.g. USB feeding
 112                         smo_mode |= (3 << 1);
 113                         fifo_threshold = 512;
 114                         outreg = (1 << 10) | (5 << 6);
 115                         break;
 116                 case OUTMODE_HIGH_Z:  // disable
 117                         outreg = 0;
 118                         break;
 119                 default:
 120                         dprintk("Unhandled output_mode passed to be set for demod %p\n",&state->demod);
 121                         break;
 122         }
 123
 124         if (state->cfg.output_mpeg2_in_188_bytes)
 125                 smo_mode |= (1 << 5) ;
 126
 127         ret |= dib7000m_write_word(state,  294 + state->reg_offs, smo_mode);
 128         ret |= dib7000m_write_word(state,  295 + state->reg_offs, fifo_threshold); /* synchronous fread */
 129         ret |= dib7000m_write_word(state, 1795, outreg);
 130         ret |= dib7000m_write_word(state, 1805, sram);
 131
 132         return ret;
 133 }
 134
 135 static int dib7000m_set_power_mode(struct dib7000m_state *state, enum dib7000m_power_mode mode)
 136 {
 137         /* by default everything is going to be powered off */
 138         u16 reg_903 = 0xffff, reg_904 = 0xffff, reg_905 = 0xffff, reg_906  = 0x3fff;
 139
 140         /* now, depending on the requested mode, we power on */
 141         switch (mode) {
 142                 /* power up everything in the demod */
 143                 case DIB7000M_POWER_ALL:
 144                         reg_903 = 0x0000; reg_904 = 0x0000; reg_905 = 0x0000; reg_906 = 0x0000;
 145                         break;
 146
 147                 /* just leave power on the control-interfaces: GPIO and (I2C or SDIO or SRAM) */
 148                 case DIB7000M_POWER_INTERFACE_ONLY: /* TODO power up either SDIO or I2C or SRAM */
 149                         reg_905 &= ~((1 << 7) | (1 << 6) | (1 << 5) | (1 << 2));
 150                         break;
 151
 152                 case DIB7000M_POWER_INTERF_ANALOG_AGC:
 153                         reg_903 &= ~((1 << 15) | (1 << 14) | (1 << 11) | (1 << 10));
 154                         reg_905 &= ~((1 << 7) | (1 << 6) | (1 << 5) | (1 << 4) | (1 << 2));
 155                         reg_906 &= ~((1 << 0));
 156                         break;
 157
 158                 case DIB7000M_POWER_COR4_DINTLV_ICIRM_EQUAL_CFROD:
 159                         reg_903 = 0x0000; reg_904 = 0x801f; reg_905 = 0x0000; reg_906 = 0x0000;
 160                         break;
 161
 162                 case DIB7000M_POWER_COR4_CRY_ESRAM_MOUT_NUD:
 163                         reg_903 = 0x0000; reg_904 = 0x8000; reg_905 = 0x010b; reg_906 = 0x0000;
 164                         break;
 165                 case DIB7000M_POWER_NO:
 166                         break;
 167         }
 168
 169         /* always power down unused parts */
 170         if (!state->cfg.mobile_mode)
 171                 reg_904 |= (1 << 7) | (1 << 6) | (1 << 4) | (1 << 2) | (1 << 1);
 172
 173         /* P_sdio_select_clk = 0 on MC */
 174         if (state->revision != 0x4000)
 175                 reg_906 <<= 1;
 176
 177         dib7000m_write_word(state,  903,  reg_903);
 178         dib7000m_write_word(state,  904,  reg_904);
 179         dib7000m_write_word(state,  905,  reg_905);
 180         dib7000m_write_word(state,  906,  reg_906);
 181
 182         return 0;
 183 }
 184
 185 static int dib7000m_set_adc_state(struct dib7000m_state *state, enum dibx000_adc_states no)
 186 {
 187         int ret = 0;
 188         u16 reg_913 = dib7000m_read_word(state, 913),
 189                reg_914 = dib7000m_read_word(state, 914);
 190
 191         switch (no) {
 192                 case DIBX000_SLOW_ADC_ON:
 193                         reg_914 |= (1 << 1) | (1 << 0);
 194                         ret |= dib7000m_write_word(state, 914, reg_914);
 195                         reg_914 &= ~(1 << 1);
 196                         break;
 197
 198                 case DIBX000_SLOW_ADC_OFF:
 199                         reg_914 |=  (1 << 1) | (1 << 0);
 200                         break;
 201
 202                 case DIBX000_ADC_ON:
 203                         if (state->revision == 0x4000) { // workaround for PA/MA
 204                                 // power-up ADC
 205                                 dib7000m_write_word(state, 913, 0);
 206                                 dib7000m_write_word(state, 914, reg_914 & 0x3);
 207                                 // power-down bandgag
 208                                 dib7000m_write_word(state, 913, (1 << 15));
 209                                 dib7000m_write_word(state, 914, reg_914 & 0x3);
 210                         }
 211
 212                         reg_913 &= 0x0fff;
 213                         reg_914 &= 0x0003;
 214                         break;
 215
 216                 case DIBX000_ADC_OFF: // leave the VBG voltage on
 217                         reg_913 |= (1 << 14) | (1 << 13) | (1 << 12);
 218                         reg_914 |= (1 << 5) | (1 << 4) | (1 << 3) | (1 << 2);
 219                         break;
 220
 221                 case DIBX000_VBG_ENABLE:
 222                         reg_913 &= ~(1 << 15);
 223                         break;
 224
 225                 case DIBX000_VBG_DISABLE:
 226                         reg_913 |= (1 << 15);
 227                         break;
 228
 229                 default:
 230                         break;
 231         }
 232
 233 //      dprintk("-D-  913: %x, 914: %x\n", reg_913, reg_914);
 234
 235         ret |= dib7000m_write_word(state, 913, reg_913);
 236         ret |= dib7000m_write_word(state, 914, reg_914);
 237
 238         return ret;
 239 }
 240
 241 static int dib7000m_set_bandwidth(struct dvb_frontend *demod, u8 bw_idx)
 242 {
 243         struct dib7000m_state *state = demod->demodulator_priv;
 244         u32 timf;
 245
 246         // store the current bandwidth for later use
 247         state->current_bandwidth = bw_idx;
 248
 249         if (state->timf == 0) {
 250                 dprintk("-D-  Using default timf\n");
 251                 timf = state->cfg.bw->timf;
 252         } else {
 253                 dprintk("-D-  Using updated timf\n");
 254                 timf = state->timf;
 255         }
 256
 257         timf = timf * (BW_INDEX_TO_KHZ(bw_idx) / 100) / 80;
 258
 259         dib7000m_write_word(state, 23, (timf >> 16) & 0xffff);
 260         dib7000m_write_word(state, 24, (timf      ) & 0xffff);
 261
 262         return 0;
 263 }
 264
 265 static int dib7000m_sad_calib(struct dib7000m_state *state)
 266 {
 267
 268 /* internal */
 269 //      dib7000m_write_word(state, 928, (3 << 14) | (1 << 12) | (524 << 0)); // sampling clock of the SAD is writting in set_bandwidth
 270         dib7000m_write_word(state, 929, (0 << 1) | (0 << 0));
 271         dib7000m_write_word(state, 930, 776); // 0.625*3.3 / 4096
 272
 273         /* do the calibration */
 274         dib7000m_write_word(state, 929, (1 << 0));
 275         dib7000m_write_word(state, 929, (0 << 0));
 276
 277         msleep(1);
 278
 279         return 0;
 280 }
 281
 282 static void dib7000m_reset_pll_common(struct dib7000m_state *state, const struct dibx000_bandwidth_config *bw)
 283 {
 284         dib7000m_write_word(state, 18, ((bw->internal*1000) >> 16) & 0xffff);
 285         dib7000m_write_word(state, 19,  (bw->internal*1000)        & 0xffff);
 286         dib7000m_write_word(state, 21,  (bw->ifreq          >> 16) & 0xffff);
 287         dib7000m_write_word(state, 22,   bw->ifreq                 & 0xffff);
 288
 289         dib7000m_write_word(state, 928, bw->sad_cfg);
 290 }
 291
 292 static void dib7000m_reset_pll(struct dib7000m_state *state)
 293 {
 294         const struct dibx000_bandwidth_config *bw = state->cfg.bw;
 295         u16 reg_907,reg_910;
 296
 297         /* default */
 298         reg_907 = (bw->pll_bypass << 15) | (bw->modulo << 7) |
 299                 (bw->ADClkSrc << 6) | (bw->IO_CLK_en_core << 5) | (bw->bypclk_div << 2) |
 300                 (bw->enable_refdiv << 1) | (0 << 0);
 301         reg_910 = (((bw->pll_ratio >> 6) & 0x3) << 3) | (bw->pll_range << 1) | bw->pll_reset;
 302
 303         // for this oscillator frequency should be 30 MHz for the Master (default values in the board_parameters give that value)
 304         // this is only working only for 30 MHz crystals
 305         if (!state->cfg.quartz_direct) {
 306                 reg_910 |= (1 << 5);  // forcing the predivider to 1
 307
 308                 // if the previous front-end is baseband, its output frequency is 15 MHz (prev freq divided by 2)
 309                 if(state->cfg.input_clk_is_div_2)
 310                         reg_907 |= (16 << 9);
 311                 else // otherwise the previous front-end puts out its input (default 30MHz) - no extra division necessary
 312                         reg_907 |= (8 << 9);
 313         } else {
 314                 reg_907 |= (bw->pll_ratio & 0x3f) << 9;
 315                 reg_910 |= (bw->pll_prediv << 5);
 316         }
 317
 318         dib7000m_write_word(state, 910, reg_910); // pll cfg
 319         dib7000m_write_word(state, 907, reg_907); // clk cfg0
 320         dib7000m_write_word(state, 908, 0x0006);  // clk_cfg1
 321
 322         dib7000m_reset_pll_common(state, bw);
 323 }
 324
 325 static void dib7000mc_reset_pll(struct dib7000m_state *state)
 326 {
 327         const struct dibx000_bandwidth_config *bw = state->cfg.bw;
 328
 329         // clk_cfg0
 330         dib7000m_write_word(state, 907, (bw->pll_prediv << 8) | (bw->pll_ratio << 0));
 331
 332         // clk_cfg1
 333         //dib7000m_write_word(state, 908, (1 << 14) | (3 << 12) |(0 << 11) |
 334         dib7000m_write_word(state, 908, (0 << 14) | (3 << 12) |(0 << 11) |
 335                         (bw->IO_CLK_en_core << 10) | (bw->bypclk_div << 5) | (bw->enable_refdiv << 4) |
 336                         (bw->pll_bypass << 3) | (bw->pll_range << 1) | (bw->pll_reset << 0));
 337
 338         // smpl_cfg
 339         dib7000m_write_word(state, 910, (1 << 12) | (2 << 10) | (bw->modulo << 8) | (bw->ADClkSrc << 7));
 340
 341         dib7000m_reset_pll_common(state, bw);
 342 }
 343
 344 static int dib7000m_reset_gpio(struct dib7000m_state *st)
 345 {
 346         /* reset the GPIOs */
 347         dprintk("-D-  gpio dir: %x: gpio val: %x, gpio pwm pos: %x\n",
 348                 st->cfg.gpio_dir, st->cfg.gpio_val,st->cfg.gpio_pwm_pos);
 349
 350         dib7000m_write_word(st, 773, st->cfg.gpio_dir);
 351         dib7000m_write_word(st, 774, st->cfg.gpio_val);
 352
 353         /* TODO 782 is P_gpio_od */
 354
 355         dib7000m_write_word(st, 775, st->cfg.gpio_pwm_pos);
 356
 357         dib7000m_write_word(st, 780, st->cfg.pwm_freq_div);
 358         return 0;
 359 }
 360
 361 static int dib7000m_demod_reset(struct dib7000m_state *state)
 362 {
 363         dib7000m_set_power_mode(state, DIB7000M_POWER_ALL);
 364
 365         /* always leave the VBG voltage on - it consumes almost nothing but takes a long time to start */
 366         dib7000m_set_adc_state(state, DIBX000_VBG_ENABLE);
 367
 368         /* restart all parts */
 369         dib7000m_write_word(state,  898, 0xffff);
 370         dib7000m_write_word(state,  899, 0xffff);
 371         dib7000m_write_word(state,  900, 0xff0f);
 372         dib7000m_write_word(state,  901, 0xfffc);
 373
 374         dib7000m_write_word(state,  898, 0);
 375         dib7000m_write_word(state,  899, 0);
 376         dib7000m_write_word(state,  900, 0);
 377         dib7000m_write_word(state,  901, 0);
 378
 379         if (state->revision == 0x4000)
 380                 dib7000m_reset_pll(state);
 381         else
 382                 dib7000mc_reset_pll(state);
 383
 384         if (dib7000m_reset_gpio(state) != 0)
 385                 dprintk("-E-  GPIO reset was not successful.\n");
 386
 387         if (dib7000m_set_output_mode(state, OUTMODE_HIGH_Z) != 0)
 388                 dprintk("-E-  OUTPUT_MODE could not be resetted.\n");
 389
 390         /* unforce divstr regardless whether i2c enumeration was done or not */
 391         dib7000m_write_word(state, 1794, dib7000m_read_word(state, 1794) & ~(1 << 1) );
 392
 393         dib7000m_set_bandwidth(&state->demod, BANDWIDTH_8_MHZ);
 394
 395         dib7000m_set_adc_state(state, DIBX000_SLOW_ADC_ON);
 396         dib7000m_sad_calib(state);
 397         dib7000m_set_adc_state(state, DIBX000_SLOW_ADC_OFF);
 398
 399         dib7000m_set_power_mode(state, DIB7000M_POWER_INTERFACE_ONLY);
 400
 401         return 0;
 402 }
 403
 404 static void dib7000m_restart_agc(struct dib7000m_state *state)
 405 {
 406         // P_restart_iqc & P_restart_agc
 407         dib7000m_write_word(state, 898, 0x0c00);
 408         dib7000m_write_word(state, 898, 0x0000);
 409 }
 410
 411 static int dib7000m_agc_soft_split(struct dib7000m_state *state)
 412 {
 413         u16 agc,split_offset;
 414
 415         if(!state->current_agc || !state->current_agc->perform_agc_softsplit || state->current_agc->split.max == 0)
 416                 return 0;
 417
 418         // n_agc_global
 419         agc = dib7000m_read_word(state, 390);
 420
 421         if (agc > state->current_agc->split.min_thres)
 422                 split_offset = state->current_agc->split.min;
 423         else if (agc < state->current_agc->split.max_thres)
 424                 split_offset = state->current_agc->split.max;
 425         else
 426                 split_offset = state->current_agc->split.max *
 427                         (agc - state->current_agc->split.min_thres) /
 428                         (state->current_agc->split.max_thres - state->current_agc->split.min_thres);
 429
 430         dprintk("AGC split_offset: %d\n",split_offset);
 431
 432         // P_agc_force_split and P_agc_split_offset
 433         return dib7000m_write_word(state, 103, (dib7000m_read_word(state, 103) & 0xff00) | split_offset);
 434 }
 435
 436 static int dib7000m_update_lna(struct dib7000m_state *state)
 437 {
 438         int i;
 439         u16 dyn_gain;
 440
 441         // when there is no LNA to program return immediatly
 442         if (state->cfg.update_lna == NULL)
 443                 return 0;
 444
 445         msleep(60);
 446         for (i = 0; i < 20; i++) {
 447                 // read dyn_gain here (because it is demod-dependent and not tuner)
 448                 dyn_gain = dib7000m_read_word(state, 390);
 449
 450                 dprintk("agc global: %d\n", dyn_gain);
 451
 452                 if (state->cfg.update_lna(&state->demod,dyn_gain)) { // LNA has changed
 453                         dib7000m_restart_agc(state);
 454                         msleep(60);
 455                 } else
 456                         break;
 457         }
 458         return 0;
 459 }
 460
 461 static void dib7000m_set_agc_config(struct dib7000m_state *state, u8 band)
 462 {
 463         struct dibx000_agc_config *agc = NULL;
 464         int i;
 465         if (state->current_band == band)
 466                 return;
 467         state->current_band = band;
 468
 469         for (i = 0; i < state->cfg.agc_config_count; i++)
 470                 if (state->cfg.agc[i].band_caps & band) {
 471                         agc = &state->cfg.agc[i];
 472                         break;
 473                 }
 474
 475         if (agc == NULL) {
 476                 dprintk("-E-  No valid AGC configuration found for band 0x%02x\n",band);
 477                 return;
 478         }
 479
 480         state->current_agc = agc;
 481
 482         /* AGC */
 483         dib7000m_write_word(state, 72 ,  agc->setup);
 484         dib7000m_write_word(state, 73 ,  agc->inv_gain);
 485         dib7000m_write_word(state, 74 ,  agc->time_stabiliz);
 486         dib7000m_write_word(state, 97 , (agc->alpha_level << 12) | agc->thlock);
 487
 488         // Demod AGC loop configuration
 489         dib7000m_write_word(state, 98, (agc->alpha_mant << 5) | agc->alpha_exp);
 490         dib7000m_write_word(state, 99, (agc->beta_mant  << 6) | agc->beta_exp);
 491
 492         dprintk("-D-  WBD: ref: %d, sel: %d, active: %d, alpha: %d\n",
 493                 state->wbd_ref != 0 ? state->wbd_ref : agc->wbd_ref, agc->wbd_sel, !agc->perform_agc_softsplit, agc->wbd_sel);
 494
 495         /* AGC continued */
 496         if (state->wbd_ref != 0)
 497                 dib7000m_write_word(state, 102, state->wbd_ref);
 498         else // use default
 499                 dib7000m_write_word(state, 102, agc->wbd_ref);
 500
 501         dib7000m_write_word(state, 103, (agc->wbd_alpha << 9) | (agc->perform_agc_softsplit << 8) );
 502         dib7000m_write_word(state, 104,  agc->agc1_max);
 503         dib7000m_write_word(state, 105,  agc->agc1_min);
 504         dib7000m_write_word(state, 106,  agc->agc2_max);
 505         dib7000m_write_word(state, 107,  agc->agc2_min);
 506         dib7000m_write_word(state, 108, (agc->agc1_pt1 << 8) | agc->agc1_pt2 );
 507         dib7000m_write_word(state, 109, (agc->agc1_slope1 << 8) | agc->agc1_slope2);
 508         dib7000m_write_word(state, 110, (agc->agc2_pt1 << 8) | agc->agc2_pt2);
 509         dib7000m_write_word(state, 111, (agc->agc2_slope1 << 8) | agc->agc2_slope2);
 510
 511         if (state->revision > 0x4000) { // settings for the MC
 512                 dib7000m_write_word(state, 71,   agc->agc1_pt3);
 513 //              dprintk("-D-  929: %x %d %d\n",
 514 //                      (dib7000m_read_word(state, 929) & 0xffe3) | (agc->wbd_inv << 4) | (agc->wbd_sel << 2), agc->wbd_inv, agc->wbd_sel);
 515                 dib7000m_write_word(state, 929, (dib7000m_read_word(state, 929) & 0xffe3) | (agc->wbd_inv << 4) | (agc->wbd_sel << 2));
 516         } else {
 517                 // wrong default values
 518                 u16 b[9] = { 676, 696, 717, 737, 758, 778, 799, 819, 840 };
 519                 for (i = 0; i < 9; i++)
 520                         dib7000m_write_word(state, 88 + i, b[i]);
 521         }
 522 }
 523
 524 static void dib7000m_update_timf_freq(struct dib7000m_state *state)
 525 {
 526         u32 timf = (dib7000m_read_word(state, 436) << 16) | dib7000m_read_word(state, 437);
 527         state->timf = timf * 80 / (BW_INDEX_TO_KHZ(state->current_bandwidth) / 100);
 528         dib7000m_write_word(state, 23, (u16) (timf >> 16));
 529         dib7000m_write_word(state, 24, (u16) (timf & 0xffff));
 530         dprintk("-D-  Updated timf_frequency: %d (default: %d)\n",state->timf, state->cfg.bw->timf);
 531 }
 532
 533 static void dib7000m_set_channel(struct dib7000m_state *state, struct dibx000_ofdm_channel *ch, u8 seq)
 534 {
 535         u16 value, est[4];
 536
 537         dib7000m_set_agc_config(state, BAND_OF_FREQUENCY(ch->RF_kHz));
 538
 539         /* nfft, guard, qam, alpha */
 540         dib7000m_write_word(state, 0, (ch->nfft << 7) | (ch->guard << 5) | (ch->nqam << 3) | (ch->vit_alpha));
 541         dib7000m_write_word(state, 5, (seq << 4));
 542
 543         /* P_dintl_native, P_dintlv_inv, P_vit_hrch, P_vit_code_rate, P_vit_select_hp */
 544         value = (ch->intlv_native << 6) | (ch->vit_hrch << 4) | (ch->vit_select_hp & 0x1);
 545         if (ch->vit_hrch == 0 || ch->vit_select_hp == 1)
 546                 value |= (ch->vit_code_rate_hp << 1);
 547         else
 548                 value |= (ch->vit_code_rate_lp << 1);
 549         dib7000m_write_word(state, 267 + state->reg_offs, value);
 550
 551         /* offset loop parameters */
 552
 553         /* P_timf_alpha = 6, P_corm_alpha=6, P_corm_thres=0x80 */
 554         dib7000m_write_word(state, 26, (6 << 12) | (6 << 8) | 0x80);
 555
 556         /* P_ctrl_inh_cor=0, P_ctrl_alpha_cor=4, P_ctrl_inh_isi=1, P_ctrl_alpha_isi=3, P_ctrl_inh_cor4=1, P_ctrl_alpha_cor4=3 */
 557         dib7000m_write_word(state, 29, (0 << 14) | (4 << 10) | (1 << 9) | (3 << 5) | (1 << 4) | (0x3));
 558
 559         /* P_ctrl_freeze_pha_shift=0, P_ctrl_pha_off_max=3 */
 560         dib7000m_write_word(state, 32, (0 << 4) | 0x3);
 561
 562         /* P_ctrl_sfreq_inh=0, P_ctrl_sfreq_step=5 */
 563         dib7000m_write_word(state, 33, (0 << 4) | 0x5);
 564
 565         /* P_dvsy_sync_wait */
 566         switch (ch->nfft) {
 567                 case 1: value = 256; break;
 568                 case 2: value = 128; break;
 569                 case 0:
 570                 default: value = 64; break;
 571         }
 572         value *= ((1 << (ch->guard)) * 3 / 2); // add 50% SFN margin
 573         value <<= 4;
 574
 575         /* deactive the possibility of diversity reception if extended interleave - not for 7000MC */
 576         /* P_dvsy_sync_mode = 0, P_dvsy_sync_enable=1, P_dvcb_comb_mode=2 */
 577         if (ch->intlv_native || state->revision > 0x4000)
 578                 value |= (1 << 2) | (2 << 0);
 579         else
 580                 value |= 0;
 581         dib7000m_write_word(state, 266 + state->reg_offs, value);
 582
 583         /* channel estimation fine configuration */
 584         switch (ch->nqam) {
 585                 case 2:
 586                         est[0] = 0x0148;       /* P_adp_regul_cnt 0.04 */
 587                         est[1] = 0xfff0;       /* P_adp_noise_cnt -0.002 */
 588                         est[2] = 0x00a4;       /* P_adp_regul_ext 0.02 */
 589                         est[3] = 0xfff8;       /* P_adp_noise_ext -0.001 */
 590                         break;
 591                 case 1:
 592                         est[0] = 0x023d;       /* P_adp_regul_cnt 0.07 */
 593                         est[1] = 0xffdf;       /* P_adp_noise_cnt -0.004 */
 594                         est[2] = 0x00a4;       /* P_adp_regul_ext 0.02 */
 595                         est[3] = 0xfff0;       /* P_adp_noise_ext -0.002 */
 596                         break;
 597                 default:
 598                         est[0] = 0x099a;       /* P_adp_regul_cnt 0.3 */
 599                         est[1] = 0xffae;       /* P_adp_noise_cnt -0.01 */
 600                         est[2] = 0x0333;       /* P_adp_regul_ext 0.1 */
 601                         est[3] = 0xfff8;       /* P_adp_noise_ext -0.002 */
 602                         break;
 603         }
 604         for (value = 0; value < 4; value++)
 605                 dib7000m_write_word(state, 214 + value + state->reg_offs, est[value]);
 606
 607         // set power-up level: interf+analog+AGC
 608         dib7000m_set_power_mode(state, DIB7000M_POWER_INTERF_ANALOG_AGC);
 609         dib7000m_set_adc_state(state, DIBX000_ADC_ON);
 610
 611         msleep(7);
 612
 613         //AGC initialization
 614         if (state->cfg.agc_control)
 615                 state->cfg.agc_control(&state->demod, 1);
 616
 617         dib7000m_restart_agc(state);
 618
 619         // wait AGC rough lock time
 620         msleep(5);
 621
 622         dib7000m_update_lna(state);
 623         dib7000m_agc_soft_split(state);
 624
 625         // wait AGC accurate lock time
 626         msleep(7);
 627
 628         if (state->cfg.agc_control)
 629                 state->cfg.agc_control(&state->demod, 0);
 630
 631         // set power-up level: autosearch
 632         dib7000m_set_power_mode(state, DIB7000M_POWER_COR4_DINTLV_ICIRM_EQUAL_CFROD);
 633 }
 634
 635 static int dib7000m_autosearch_start(struct dvb_frontend *demod, struct dibx000_ofdm_channel *ch)
 636 {
 637         struct dib7000m_state *state = demod->demodulator_priv;
 638         struct dibx000_ofdm_channel auto_ch;
 639         int ret = 0;
 640         u32 value;
 641
 642         INIT_OFDM_CHANNEL(&auto_ch);
 643         auto_ch.RF_kHz           = ch->RF_kHz;
 644         auto_ch.Bw               = ch->Bw;
 645         auto_ch.nqam             = 2;
 646         auto_ch.guard            = 0;
 647         auto_ch.nfft             = 1;
 648         auto_ch.vit_alpha        = 1;
 649         auto_ch.vit_select_hp    = 1;
 650         auto_ch.vit_code_rate_hp = 2;
 651         auto_ch.vit_code_rate_lp = 3;
 652         auto_ch.vit_hrch         = 0;
 653         auto_ch.intlv_native     = 1;
 654
 655         dib7000m_set_channel(state, &auto_ch, 7);
 656
 657         // always use the setting for 8MHz here lock_time for 7,6 MHz are longer
 658         value = 30 * state->cfg.bw->internal;
 659         ret |= dib7000m_write_word(state, 6,  (u16) ((value >> 16) & 0xffff)); // lock0 wait time
 660         ret |= dib7000m_write_word(state, 7,  (u16)  (value        & 0xffff)); // lock0 wait time
 661         value = 100 * state->cfg.bw->internal;
 662         ret |= dib7000m_write_word(state, 8,  (u16) ((value >> 16) & 0xffff)); // lock1 wait time
 663         ret |= dib7000m_write_word(state, 9,  (u16)  (value        & 0xffff)); // lock1 wait time
 664         value = 500 * state->cfg.bw->internal;
 665         ret |= dib7000m_write_word(state, 10, (u16) ((value >> 16) & 0xffff)); // lock2 wait time
 666         ret |= dib7000m_write_word(state, 11, (u16)  (value        & 0xffff)); // lock2 wait time
 667
 668         // start search
 669         value = dib7000m_read_word(state, 0);
 670         ret |= dib7000m_write_word(state, 0, value | (1 << 9));
 671
 672         /* clear n_irq_pending */
 673         if (state->revision == 0x4000)
 674                 dib7000m_write_word(state, 1793, 0);
 675         else
 676                 dib7000m_read_word(state, 537);
 677
 678         ret |= dib7000m_write_word(state, 0, (u16) value);
 679
 680         return ret;
 681 }
 682
 683 static int dib7000m_autosearch_irq(struct dib7000m_state *state, u16 reg)
 684 {
 685         u16 irq_pending = dib7000m_read_word(state, reg);
 686
 687         if (irq_pending & 0x1) { // failed
 688                 dprintk("#\n");
 689                 return 1;
 690         }
 691
 692         if (irq_pending & 0x2) { // succeeded
 693                 dprintk("!\n");
 694                 return 2;
 695         }
 696         return 0; // still pending
 697 }
 698
 699 static int dib7000m_autosearch_is_irq(struct dvb_frontend *demod)
 700 {
 701         struct dib7000m_state *state = demod->demodulator_priv;
 702         if (state->revision == 0x4000)
 703                 return dib7000m_autosearch_irq(state, 1793);
 704         else
 705                 return dib7000m_autosearch_irq(state, 537);
 706 }
 707
 708 static int dib7000m_tune(struct dvb_frontend *demod, struct dibx000_ofdm_channel *ch)
 709 {
 710         struct dib7000m_state *state = demod->demodulator_priv;
 711         int ret = 0;
 712         u16 value;
 713
 714         // we are already tuned - just resuming from suspend
 715         if (ch != NULL)
 716                 dib7000m_set_channel(state, ch, 0);
 717         else
 718                 return -EINVAL;
 719
 720         // restart demod
 721         ret |= dib7000m_write_word(state, 898, 0x4000);
 722         ret |= dib7000m_write_word(state, 898, 0x0000);
 723         msleep(45);
 724
 725         ret |= dib7000m_set_power_mode(state, DIB7000M_POWER_COR4_CRY_ESRAM_MOUT_NUD);
 726         /* P_ctrl_inh_cor=0, P_ctrl_alpha_cor=4, P_ctrl_inh_isi=0, P_ctrl_alpha_isi=3, P_ctrl_inh_cor4=1, P_ctrl_alpha_cor4=3 */
 727         ret |= dib7000m_write_word(state, 29, (0 << 14) | (4 << 10) | (0 << 9) | (3 << 5) | (1 << 4) | (0x3));
 728
 729         // never achieved a lock with that bandwidth so far - wait for timfreq to update
 730         if (state->timf == 0)
 731                 msleep(200);
 732
 733         //dump_reg(state);
 734         /* P_timf_alpha, P_corm_alpha=6, P_corm_thres=0x80 */
 735         value = (6 << 8) | 0x80;
 736         switch (ch->nfft) {
 737                 case 0: value |= (7 << 12); break;
 738                 case 1: value |= (9 << 12); break;
 739                 case 2: value |= (8 << 12); break;
 740         }
 741         ret |= dib7000m_write_word(state, 26, value);
 742
 743         /* P_ctrl_freeze_pha_shift=0, P_ctrl_pha_off_max */
 744         value = (0 << 4);
 745         switch (ch->nfft) {
 746                 case 0: value |= 0x6; break;
 747                 case 1: value |= 0x8; break;
 748                 case 2: value |= 0x7; break;
 749         }
 750         ret |= dib7000m_write_word(state, 32, value);
 751
 752         /* P_ctrl_sfreq_inh=0, P_ctrl_sfreq_step */
 753         value = (0 << 4);
 754         switch (ch->nfft) {
 755                 case 0: value |= 0x6; break;
 756                 case 1: value |= 0x8; break;
 757                 case 2: value |= 0x7; break;
 758         }
 759         ret |= dib7000m_write_word(state, 33,  value);
 760
 761         // we achieved a lock - it's time to update the osc freq
 762         if ((dib7000m_read_word(state, 535) >> 6)  & 0x1)
 763                 dib7000m_update_timf_freq(state);
 764
 765         return ret;
 766 }
 767
 768 static int dib7000m_init(struct dvb_frontend *demod)
 769 {
 770         struct dib7000m_state *state = demod->demodulator_priv;
 771         int ret = 0;
 772         u8 o = state->reg_offs;
 773
 774         dib7000m_set_power_mode(state, DIB7000M_POWER_ALL);
 775
 776         if (dib7000m_set_adc_state(state, DIBX000_SLOW_ADC_ON) != 0)
 777                 dprintk("-E-  could not start Slow ADC\n");
 778
 779         if (state->cfg.dvbt_mode)
 780                 dib7000m_write_word(state, 1796, 0x0); // select DVB-T output
 781
 782         if (state->cfg.mobile_mode)
 783                 ret |= dib7000m_write_word(state, 261 + o, 2);
 784         else
 785                 ret |= dib7000m_write_word(state, 224 + o, 1);
 786
 787         ret |= dib7000m_write_word(state, 173 + o, 0);
 788         ret |= dib7000m_write_word(state, 174 + o, 0);
 789         ret |= dib7000m_write_word(state, 175 + o, 0);
 790         ret |= dib7000m_write_word(state, 176 + o, 0);
 791         ret |= dib7000m_write_word(state, 177 + o, 0);
 792         ret |= dib7000m_write_word(state, 178 + o, 0);
 793         ret |= dib7000m_write_word(state, 179 + o, 0);
 794         ret |= dib7000m_write_word(state, 180 + o, 0);
 795
 796         // P_corm_thres Lock algorithms configuration
 797         ret |= dib7000m_write_word(state, 26, 0x6680);
 798
 799         // P_palf_alpha_regul, P_palf_filter_freeze, P_palf_filter_on
 800         ret |= dib7000m_write_word(state, 170 + o, 0x0410);
 801         // P_fft_nb_to_cut
 802         ret |= dib7000m_write_word(state, 182 + o, 8192);
 803         // P_pha3_thres
 804         ret |= dib7000m_write_word(state, 195 + o, 0x0ccd);
 805         // P_cti_use_cpe, P_cti_use_prog
 806         ret |= dib7000m_write_word(state, 196 + o,     0);
 807         // P_cspu_regul, P_cspu_win_cut
 808         ret |= dib7000m_write_word(state, 205 + o, 0x200f);
 809         // P_adp_regul_cnt
 810         ret |= dib7000m_write_word(state, 214 + o, 0x023d);
 811         // P_adp_noise_cnt
 812         ret |= dib7000m_write_word(state, 215 + o, 0x00a4);
 813         // P_adp_regul_ext
 814         ret |= dib7000m_write_word(state, 216 + o, 0x00a4);
 815         // P_adp_noise_ext
 816         ret |= dib7000m_write_word(state, 217 + o, 0x7ff0);
 817         // P_adp_fil
 818         ret |= dib7000m_write_word(state, 218 + o, 0x3ccc);
 819
 820         // P_2d_byp_ti_num
 821         ret |= dib7000m_write_word(state, 226 + o, 0);
 822
 823         // P_fec_*
 824         ret |= dib7000m_write_word(state, 281 + o, 0x0010);
 825         // P_smo_mode, P_smo_rs_discard, P_smo_fifo_flush, P_smo_pid_parse, P_smo_error_discard
 826         ret |= dib7000m_write_word(state, 294 + o,0x0062);
 827
 828         // P_iqc_alpha_pha, P_iqc_alpha_amp, P_iqc_dcc_alpha, ...
 829         if(state->cfg.tuner_is_baseband)
 830                 ret |= dib7000m_write_word(state, 36, 0x0755);
 831         else
 832                 ret |= dib7000m_write_word(state, 36, 0x1f55);
 833
 834         // auto search configuration
 835         ret |= dib7000m_write_word(state, 2,  0x0004);
 836         ret |= dib7000m_write_word(state, 3,  0x1000);
 837         ret |= dib7000m_write_word(state, 4,  0x0814);
 838         ret |= dib7000m_write_word(state, 6,  0x001b);
 839         ret |= dib7000m_write_word(state, 7,  0x7740);
 840         ret |= dib7000m_write_word(state, 8,  0x005b);
 841         ret |= dib7000m_write_word(state, 9,  0x8d80);
 842         ret |= dib7000m_write_word(state, 10, 0x01c9);
 843         ret |= dib7000m_write_word(state, 11, 0xc380);
 844         ret |= dib7000m_write_word(state, 12, 0x0000);
 845         ret |= dib7000m_write_word(state, 13, 0x0080);
 846         ret |= dib7000m_write_word(state, 14, 0x0000);
 847         ret |= dib7000m_write_word(state, 15, 0x0090);
 848         ret |= dib7000m_write_word(state, 16, 0x0001);
 849         ret |= dib7000m_write_word(state, 17, 0xd4c0);
 850         ret |= dib7000m_write_word(state, 263 + o,0x0001);
 851
 852         // P_divclksel=3 P_divbitsel=1
 853         if (state->revision == 0x4000)
 854                 dib7000m_write_word(state, 909, (3 << 10) | (1 << 6));
 855         else
 856                 dib7000m_write_word(state, 909, (3 << 4) | 1);
 857
 858         // Tuner IO bank: max drive (14mA)
 859         ret |= dib7000m_write_word(state, 912 ,0x2c8a);
 860
 861         ret |= dib7000m_write_word(state, 1817, 1);
 862
 863         return ret;
 864 }
 865
 866 static int dib7000m_sleep(struct dvb_frontend *demod)
 867 {
 868         struct dib7000m_state *st = demod->demodulator_priv;
 869         dib7000m_set_output_mode(st, OUTMODE_HIGH_Z);
 870         return dib7000m_set_power_mode(st, DIB7000M_POWER_INTERFACE_ONLY) |
 871                 dib7000m_set_adc_state(st, DIBX000_SLOW_ADC_OFF) |
 872                 dib7000m_set_adc_state(st, DIBX000_ADC_OFF);
 873 }
 874
 875 static int dib7000m_identify(struct dib7000m_state *state)
 876 {
 877         u16 value;
 878         if ((value = dib7000m_read_word(state, 896)) != 0x01b3) {
 879                 dprintk("-E-  DiB7000M: wrong Vendor ID (read=0x%x)\n",value);
 880                 return -EREMOTEIO;
 881         }
 882
 883         state->revision = dib7000m_read_word(state, 897);
 884         if (state->revision != 0x4000 &&
 885                 state->revision != 0x4001 &&
 886                 state->revision != 0x4002) {
 887                 dprintk("-E-  DiB7000M: wrong Device ID (%x)\n",value);
 888                 return -EREMOTEIO;
 889         }
 890
 891         /* protect this driver to be used with 7000PC */
 892         if (state->revision == 0x4000 && dib7000m_read_word(state, 769) == 0x4000) {
 893                 dprintk("-E-  DiB7000M: this driver does not work with DiB7000PC\n");
 894                 return -EREMOTEIO;
 895         }
 896
 897         switch (state->revision) {
 898                 case 0x4000: dprintk("-I-  found DiB7000MA/PA/MB/PB\n"); break;
 899                 case 0x4001: state->reg_offs = 1; dprintk("-I-  found DiB7000HC\n"); break;
 900                 case 0x4002: state->reg_offs = 1; dprintk("-I-  found DiB7000MC\n"); break;
 901         }
 902
 903         return 0;
 904 }
 905
 906
 907 static int dib7000m_get_frontend(struct dvb_frontend* fe,
 908                                 struct dvb_frontend_parameters *fep)
 909 {
 910         struct dib7000m_state *state = fe->demodulator_priv;
 911         u16 tps = dib7000m_read_word(state,480);
 912
 913         fep->inversion = INVERSION_AUTO;
 914
 915         fep->u.ofdm.bandwidth = state->current_bandwidth;
 916
 917         switch ((tps >> 8) & 0x3) {
 918                 case 0: fep->u.ofdm.transmission_mode = TRANSMISSION_MODE_2K; break;
 919                 case 1: fep->u.ofdm.transmission_mode = TRANSMISSION_MODE_8K; break;
 920                 /* case 2: fep->u.ofdm.transmission_mode = TRANSMISSION_MODE_4K; break; */
 921         }
 922
 923         switch (tps & 0x3) {
 924                 case 0: fep->u.ofdm.guard_interval = GUARD_INTERVAL_1_32; break;
 925                 case 1: fep->u.ofdm.guard_interval = GUARD_INTERVAL_1_16; break;
 926                 case 2: fep->u.ofdm.guard_interval = GUARD_INTERVAL_1_8; break;
 927                 case 3: fep->u.ofdm.guard_interval = GUARD_INTERVAL_1_4; break;
 928         }
 929
 930         switch ((tps >> 14) & 0x3) {
 931                 case 0: fep->u.ofdm.constellation = QPSK; break;
 932                 case 1: fep->u.ofdm.constellation = QAM_16; break;
 933                 case 2:
 934                 default: fep->u.ofdm.constellation = QAM_64; break;
 935         }
 936
 937         /* as long as the frontend_param structure is fixed for hierarchical transmission I refuse to use it */
 938         /* (tps >> 13) & 0x1 == hrch is used, (tps >> 10) & 0x7 == alpha */
 939
 940         fep->u.ofdm.hierarchy_information = HIERARCHY_NONE;
 941         switch ((tps >> 5) & 0x7) {
 942                 case 1: fep->u.ofdm.code_rate_HP = FEC_1_2; break;
 943                 case 2: fep->u.ofdm.code_rate_HP = FEC_2_3; break;
 944                 case 3: fep->u.ofdm.code_rate_HP = FEC_3_4; break;
 945                 case 5: fep->u.ofdm.code_rate_HP = FEC_5_6; break;
 946                 case 7:
 947                 default: fep->u.ofdm.code_rate_HP = FEC_7_8; break;
 948
 949         }
 950
 951         switch ((tps >> 2) & 0x7) {
 952                 case 1: fep->u.ofdm.code_rate_LP = FEC_1_2; break;
 953                 case 2: fep->u.ofdm.code_rate_LP = FEC_2_3; break;
 954                 case 3: fep->u.ofdm.code_rate_LP = FEC_3_4; break;
 955                 case 5: fep->u.ofdm.code_rate_LP = FEC_5_6; break;
 956                 case 7:
 957                 default: fep->u.ofdm.code_rate_LP = FEC_7_8; break;
 958         }
 959
 960         /* native interleaver: (dib7000m_read_word(state, 481) >>  5) & 0x1 */
 961
 962         return 0;
 963 }
 964
 965 static int dib7000m_set_frontend(struct dvb_frontend* fe,
 966                                 struct dvb_frontend_parameters *fep)
 967 {
 968         struct dib7000m_state *state = fe->demodulator_priv;
 969         struct dibx000_ofdm_channel ch;
 970
 971         INIT_OFDM_CHANNEL(&ch);
 972         FEP2DIB(fep,&ch);
 973
 974         state->current_bandwidth = fep->u.ofdm.bandwidth;
 975         dib7000m_set_bandwidth(fe, fep->u.ofdm.bandwidth);
 976
 977         if (fe->ops.tuner_ops.set_params)
 978                 fe->ops.tuner_ops.set_params(fe, fep);
 979
 980         if (fep->u.ofdm.transmission_mode == TRANSMISSION_MODE_AUTO ||
 981                 fep->u.ofdm.guard_interval    == GUARD_INTERVAL_AUTO ||
 982                 fep->u.ofdm.constellation     == QAM_AUTO ||
 983                 fep->u.ofdm.code_rate_HP      == FEC_AUTO) {
 984                 int i = 800, found;
 985
 986                 dib7000m_autosearch_start(fe, &ch);
 987                 do {
 988                         msleep(1);
 989                         found = dib7000m_autosearch_is_irq(fe);
 990                 } while (found == 0 && i--);
 991
 992                 dprintk("autosearch returns: %d\n",found);
 993                 if (found == 0 || found == 1)
 994                         return 0; // no channel found
 995
 996                 dib7000m_get_frontend(fe, fep);
 997                 FEP2DIB(fep, &ch);
 998         }
 999
1000         /* make this a config parameter */
1001         dib7000m_set_output_mode(state, OUTMODE_MPEG2_FIFO);
1002
1003         return dib7000m_tune(fe, &ch);
1004 }
1005
1006 static int dib7000m_read_status(struct dvb_frontend *fe, fe_status_t *stat)
1007 {
1008         struct dib7000m_state *state = fe->demodulator_priv;
1009         u16 lock = dib7000m_read_word(state, 535);
1010
1011         *stat = 0;
1012
1013         if (lock & 0x8000)
1014                 *stat |= FE_HAS_SIGNAL;
1015         if (lock & 0x3000)
1016                 *stat |= FE_HAS_CARRIER;
1017         if (lock & 0x0100)
1018                 *stat |= FE_HAS_VITERBI;
1019         if (lock & 0x0010)
1020                 *stat |= FE_HAS_SYNC;
1021         if (lock & 0x0008)
1022                 *stat |= FE_HAS_LOCK;
1023
1024         return 0;
1025 }
1026
1027 static int dib7000m_read_ber(struct dvb_frontend *fe, u32 *ber)
1028 {
1029         struct dib7000m_state *state = fe->demodulator_priv;
1030         *ber = (dib7000m_read_word(state, 526) << 16) | dib7000m_read_word(state, 527);
1031         return 0;
1032 }
1033
1034 static int dib7000m_read_unc_blocks(struct dvb_frontend *fe, u32 *unc)
1035 {
1036         struct dib7000m_state *state = fe->demodulator_priv;
1037         *unc = dib7000m_read_word(state, 534);
1038         return 0;
1039 }
1040
1041 static int dib7000m_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
1042 {
1043         struct dib7000m_state *state = fe->demodulator_priv;
1044         u16 val = dib7000m_read_word(state, 390);
1045         *strength = 65535 - val;
1046         return 0;
1047 }
1048
1049 static int dib7000m_read_snr(struct dvb_frontend* fe, u16 *snr)
1050 {
1051         *snr = 0x0000;
1052         return 0;
1053 }
1054
1055 static int dib7000m_fe_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings *tune)
1056 {
1057         tune->min_delay_ms = 1000;
1058         return 0;
1059 }
1060
1061 static void dib7000m_release(struct dvb_frontend *demod)
1062 {
1063         struct dib7000m_state *st = demod->demodulator_priv;
1064         dibx000_exit_i2c_master(&st->i2c_master);
1065         kfree(st);
1066 }
1067
1068 struct i2c_adapter * dib7000m_get_i2c_master(struct dvb_frontend *demod, enum dibx000_i2c_interface intf, int gating)
1069 {
1070         struct dib7000m_state *st = demod->demodulator_priv;
1071         return dibx000_get_i2c_adapter(&st->i2c_master, intf, gating);
1072 }
1073 EXPORT_SYMBOL(dib7000m_get_i2c_master);
1074
1075 int dib7000m_i2c_enumeration(struct i2c_adapter *i2c, int no_of_demods, u8 default_addr, struct dib7000m_config cfg[])
1076 {
1077         struct dib7000m_state st = { .i2c_adap = i2c };
1078         int k = 0;
1079         u8 new_addr = 0;
1080
1081         for (k = no_of_demods-1; k >= 0; k--) {
1082                 st.cfg = cfg[k];
1083
1084                 /* designated i2c address */
1085                 new_addr          = (0x40 + k) << 1;
1086                 st.i2c_addr = new_addr;
1087                 if (dib7000m_identify(&st) != 0) {
1088                         st.i2c_addr = default_addr;
1089                         if (dib7000m_identify(&st) != 0) {
1090                                 dprintk("DiB7000M #%d: not identified\n", k);
1091                                 return -EIO;
1092                         }
1093                 }
1094
1095                 /* start diversity to pull_down div_str - just for i2c-enumeration */
1096                 dib7000m_set_output_mode(&st, OUTMODE_DIVERSITY);
1097
1098                 dib7000m_write_word(&st, 1796, 0x0); // select DVB-T output
1099
1100                 /* set new i2c address and force divstart */
1101                 dib7000m_write_word(&st, 1794, (new_addr << 2) | 0x2);
1102
1103                 dprintk("IC %d initialized (to i2c_address 0x%x)\n", k, new_addr);
1104         }
1105
1106         for (k = 0; k < no_of_demods; k++) {
1107                 st.cfg = cfg[k];
1108                 st.i2c_addr = (0x40 + k) << 1;
1109
1110                 // unforce divstr
1111                 dib7000m_write_word(&st,1794, st.i2c_addr << 2);
1112
1113                 /* deactivate div - it was just for i2c-enumeration */
1114                 dib7000m_set_output_mode(&st, OUTMODE_HIGH_Z);
1115         }
1116
1117         return 0;
1118 }
1119 EXPORT_SYMBOL(dib7000m_i2c_enumeration);
1120
1121 static struct dvb_frontend_ops dib7000m_ops;
1122 struct dvb_frontend * dib7000m_attach(struct i2c_adapter *i2c_adap, u8 i2c_addr, struct dib7000m_config *cfg)
1123 {
1124         struct dvb_frontend *demod;
1125         struct dib7000m_state *st;
1126         st = kzalloc(sizeof(struct dib7000m_state), GFP_KERNEL);
1127         if (st == NULL)
1128                 return NULL;
1129
1130         memcpy(&st->cfg, cfg, sizeof(struct dib7000m_config));
1131         st->i2c_adap = i2c_adap;
1132         st->i2c_addr = i2c_addr;
1133
1134         demod                   = &st->demod;
1135         demod->demodulator_priv = st;
1136         memcpy(&st->demod.ops, &dib7000m_ops, sizeof(struct dvb_frontend_ops));
1137
1138         if (dib7000m_identify(st) != 0)
1139                 goto error;
1140
1141         if (st->revision == 0x4000)
1142                 dibx000_init_i2c_master(&st->i2c_master, DIB7000, st->i2c_adap, st->i2c_addr);
1143         else
1144                 dibx000_init_i2c_master(&st->i2c_master, DIB7000MC, st->i2c_adap, st->i2c_addr);
1145
1146         dib7000m_demod_reset(st);
1147
1148         return demod;
1149
1150 error:
1151         kfree(st);
1152         return NULL;
1153 }
1154 EXPORT_SYMBOL(dib7000m_attach);
1155
1156 static struct dvb_frontend_ops dib7000m_ops = {
1157         .info = {
1158                 .name = "DiBcom 7000MA/MB/PA/PB/MC",
1159                 .type = FE_OFDM,
1160                 .frequency_min      = 44250000,
1161                 .frequency_max      = 867250000,
1162                 .frequency_stepsize = 62500,
1163                 .caps = FE_CAN_INVERSION_AUTO |
1164                         FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
1165                         FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
1166                         FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO |
1167                         FE_CAN_TRANSMISSION_MODE_AUTO |
1168                         FE_CAN_GUARD_INTERVAL_AUTO |
1169                         FE_CAN_RECOVER |
1170                         FE_CAN_HIERARCHY_AUTO,
1171         },
1172
1173         .release              = dib7000m_release,
1174
1175         .init                 = dib7000m_init,
1176         .sleep                = dib7000m_sleep,
1177
1178         .set_frontend         = dib7000m_set_frontend,
1179         .get_tune_settings    = dib7000m_fe_get_tune_settings,
1180         .get_frontend         = dib7000m_get_frontend,
1181
1182         .read_status          = dib7000m_read_status,
1183         .read_ber             = dib7000m_read_ber,
1184         .read_signal_strength = dib7000m_read_signal_strength,
1185         .read_snr             = dib7000m_read_snr,
1186         .read_ucblocks        = dib7000m_read_unc_blocks,
1187 };
1188
1189 MODULE_AUTHOR("Patrick Boettcher <pboettcher@dibcom.fr>");
1190 MODULE_DESCRIPTION("Driver for the DiBcom 7000MA/MB/PA/PB/MC COFDM demodulator");
1191 MODULE_LICENSE("GPL");