drivers/media/dvb-frontends/dib8000.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Linux-DVB Driver for DiBcom's DiB8000 chip (ISDB-T).
   4  *
   5  * Copyright (C) 2009 DiBcom (http://www.dibcom.fr/)
   6  */
   7
   8 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
   9
  10 #include <linux/kernel.h>
  11 #include <linux/slab.h>
  12 #include <linux/i2c.h>
  13 #include <linux/mutex.h>
  14 #include <asm/div64.h>
  15
  16 #include <media/dvb_math.h>
  17
  18 #include <media/dvb_frontend.h>
  19
  20 #include "dib8000.h"
  21
  22 #define LAYER_ALL -1
  23 #define LAYER_A   1
  24 #define LAYER_B   2
  25 #define LAYER_C   3
  26
  27 #define MAX_NUMBER_OF_FRONTENDS 6
  28 /* #define DIB8000_AGC_FREEZE */
  29
  30 static int debug;
  31 module_param(debug, int, 0644);
  32 MODULE_PARM_DESC(debug, "turn on debugging (default: 0)");
  33
  34 #define dprintk(fmt, arg...) do {                                       \
  35         if (debug)                                                      \
  36                 printk(KERN_DEBUG pr_fmt("%s: " fmt),                   \
  37                        __func__, ##arg);                                \
  38 } while (0)
  39
  40 struct i2c_device {
  41         struct i2c_adapter *adap;
  42         u8 addr;
  43         u8 *i2c_write_buffer;
  44         u8 *i2c_read_buffer;
  45         struct mutex *i2c_buffer_lock;
  46 };
  47
  48 enum param_loop_step {
  49         LOOP_TUNE_1,
  50         LOOP_TUNE_2
  51 };
  52
  53 enum dib8000_autosearch_step {
  54         AS_START = 0,
  55         AS_SEARCHING_FFT,
  56         AS_SEARCHING_GUARD,
  57         AS_DONE = 100,
  58 };
  59
  60 enum timeout_mode {
  61         SYMBOL_DEPENDENT_OFF = 0,
  62         SYMBOL_DEPENDENT_ON,
  63 };
  64
  65 struct dib8000_state {
  66         struct dib8000_config cfg;
  67
  68         struct i2c_device i2c;
  69
  70         struct dibx000_i2c_master i2c_master;
  71
  72         u16 wbd_ref;
  73
  74         u8 current_band;
  75         u32 current_bandwidth;
  76         struct dibx000_agc_config *current_agc;
  77         u32 timf;
  78         u32 timf_default;
  79
  80         u8 div_force_off:1;
  81         u8 div_state:1;
  82         u16 div_sync_wait;
  83
  84         u8 agc_state;
  85         u8 differential_constellation;
  86         u8 diversity_onoff;
  87
  88         s16 ber_monitored_layer;
  89         u16 gpio_dir;
  90         u16 gpio_val;
  91
  92         u16 revision;
  93         u8 isdbt_cfg_loaded;
  94         enum frontend_tune_state tune_state;
  95         s32 status;
  96
  97         struct dvb_frontend *fe[MAX_NUMBER_OF_FRONTENDS];
  98
  99         /* for the I2C transfer */
 100         struct i2c_msg msg[2];
 101         u8 i2c_write_buffer[4];
 102         u8 i2c_read_buffer[2];
 103         struct mutex i2c_buffer_lock;
 104         u8 input_mode_mpeg;
 105
 106         u16 tuner_enable;
 107         struct i2c_adapter dib8096p_tuner_adap;
 108         u16 current_demod_bw;
 109
 110         u16 seg_mask;
 111         u16 seg_diff_mask;
 112         u16 mode;
 113         u8 layer_b_nb_seg;
 114         u8 layer_c_nb_seg;
 115
 116         u8 channel_parameters_set;
 117         u16 autosearch_state;
 118         u16 found_nfft;
 119         u16 found_guard;
 120         u8 subchannel;
 121         u8 symbol_duration;
 122         unsigned long timeout;
 123         u8 longest_intlv_layer;
 124         u16 output_mode;
 125
 126         /* for DVBv5 stats */
 127         s64 init_ucb;
 128         unsigned long per_jiffies_stats;
 129         unsigned long ber_jiffies_stats;
 130         unsigned long ber_jiffies_stats_layer[3];
 131
 132 #ifdef DIB8000_AGC_FREEZE
 133         u16 agc1_max;
 134         u16 agc1_min;
 135         u16 agc2_max;
 136         u16 agc2_min;
 137 #endif
 138 };
 139
 140 enum dib8000_power_mode {
 141         DIB8000_POWER_ALL = 0,
 142         DIB8000_POWER_INTERFACE_ONLY,
 143 };
 144
 145 static u16 dib8000_i2c_read16(struct i2c_device *i2c, u16 reg)
 146 {
 147         u16 ret;
 148         struct i2c_msg msg[2] = {
 149                 {.addr = i2c->addr >> 1, .flags = 0, .len = 2},
 150                 {.addr = i2c->addr >> 1, .flags = I2C_M_RD, .len = 2},
 151         };
 152
 153         if (mutex_lock_interruptible(i2c->i2c_buffer_lock) < 0) {
 154                 dprintk("could not acquire lock\n");
 155                 return 0;
 156         }
 157
 158         msg[0].buf    = i2c->i2c_write_buffer;
 159         msg[0].buf[0] = reg >> 8;
 160         msg[0].buf[1] = reg & 0xff;
 161         msg[1].buf    = i2c->i2c_read_buffer;
 162
 163         if (i2c_transfer(i2c->adap, msg, 2) != 2)
 164                 dprintk("i2c read error on %d\n", reg);
 165
 166         ret = (msg[1].buf[0] << 8) | msg[1].buf[1];
 167         mutex_unlock(i2c->i2c_buffer_lock);
 168         return ret;
 169 }
 170
 171 static u16 __dib8000_read_word(struct dib8000_state *state, u16 reg)
 172 {
 173         u16 ret;
 174
 175         state->i2c_write_buffer[0] = reg >> 8;
 176         state->i2c_write_buffer[1] = reg & 0xff;
 177
 178         memset(state->msg, 0, 2 * sizeof(struct i2c_msg));
 179         state->msg[0].addr = state->i2c.addr >> 1;
 180         state->msg[0].flags = 0;
 181         state->msg[0].buf = state->i2c_write_buffer;
 182         state->msg[0].len = 2;
 183         state->msg[1].addr = state->i2c.addr >> 1;
 184         state->msg[1].flags = I2C_M_RD;
 185         state->msg[1].buf = state->i2c_read_buffer;
 186         state->msg[1].len = 2;
 187
 188         if (i2c_transfer(state->i2c.adap, state->msg, 2) != 2)
 189                 dprintk("i2c read error on %d\n", reg);
 190
 191         ret = (state->i2c_read_buffer[0] << 8) | state->i2c_read_buffer[1];
 192
 193         return ret;
 194 }
 195
 196 static u16 dib8000_read_word(struct dib8000_state *state, u16 reg)
 197 {
 198         u16 ret;
 199
 200         if (mutex_lock_interruptible(&state->i2c_buffer_lock) < 0) {
 201                 dprintk("could not acquire lock\n");
 202                 return 0;
 203         }
 204
 205         ret = __dib8000_read_word(state, reg);
 206
 207         mutex_unlock(&state->i2c_buffer_lock);
 208
 209         return ret;
 210 }
 211
 212 static u32 dib8000_read32(struct dib8000_state *state, u16 reg)
 213 {
 214         u16 rw[2];
 215
 216         if (mutex_lock_interruptible(&state->i2c_buffer_lock) < 0) {
 217                 dprintk("could not acquire lock\n");
 218                 return 0;
 219         }
 220
 221         rw[0] = __dib8000_read_word(state, reg + 0);
 222         rw[1] = __dib8000_read_word(state, reg + 1);
 223
 224         mutex_unlock(&state->i2c_buffer_lock);
 225
 226         return ((rw[0] << 16) | (rw[1]));
 227 }
 228
 229 static int dib8000_i2c_write16(struct i2c_device *i2c, u16 reg, u16 val)
 230 {
 231         struct i2c_msg msg = {.addr = i2c->addr >> 1, .flags = 0, .len = 4};
 232         int ret = 0;
 233
 234         if (mutex_lock_interruptible(i2c->i2c_buffer_lock) < 0) {
 235                 dprintk("could not acquire lock\n");
 236                 return -EINVAL;
 237         }
 238
 239         msg.buf    = i2c->i2c_write_buffer;
 240         msg.buf[0] = (reg >> 8) & 0xff;
 241         msg.buf[1] = reg & 0xff;
 242         msg.buf[2] = (val >> 8) & 0xff;
 243         msg.buf[3] = val & 0xff;
 244
 245         ret = i2c_transfer(i2c->adap, &msg, 1) != 1 ? -EREMOTEIO : 0;
 246         mutex_unlock(i2c->i2c_buffer_lock);
 247
 248         return ret;
 249 }
 250
 251 static int dib8000_write_word(struct dib8000_state *state, u16 reg, u16 val)
 252 {
 253         int ret;
 254
 255         if (mutex_lock_interruptible(&state->i2c_buffer_lock) < 0) {
 256                 dprintk("could not acquire lock\n");
 257                 return -EINVAL;
 258         }
 259
 260         state->i2c_write_buffer[0] = (reg >> 8) & 0xff;
 261         state->i2c_write_buffer[1] = reg & 0xff;
 262         state->i2c_write_buffer[2] = (val >> 8) & 0xff;
 263         state->i2c_write_buffer[3] = val & 0xff;
 264
 265         memset(&state->msg[0], 0, sizeof(struct i2c_msg));
 266         state->msg[0].addr = state->i2c.addr >> 1;
 267         state->msg[0].flags = 0;
 268         state->msg[0].buf = state->i2c_write_buffer;
 269         state->msg[0].len = 4;
 270
 271         ret = (i2c_transfer(state->i2c.adap, state->msg, 1) != 1 ?
 272                         -EREMOTEIO : 0);
 273         mutex_unlock(&state->i2c_buffer_lock);
 274
 275         return ret;
 276 }
 277
 278 static const s16 coeff_2k_sb_1seg_dqpsk[8] = {
 279         (769 << 5) | 0x0a, (745 << 5) | 0x03, (595 << 5) | 0x0d, (769 << 5) | 0x0a, (920 << 5) | 0x09, (784 << 5) | 0x02, (519 << 5) | 0x0c,
 280                 (920 << 5) | 0x09
 281 };
 282
 283 static const s16 coeff_2k_sb_1seg[8] = {
 284         (692 << 5) | 0x0b, (683 << 5) | 0x01, (519 << 5) | 0x09, (692 << 5) | 0x0b, 0 | 0x1f, 0 | 0x1f, 0 | 0x1f, 0 | 0x1f
 285 };
 286
 287 static const s16 coeff_2k_sb_3seg_0dqpsk_1dqpsk[8] = {
 288         (832 << 5) | 0x10, (912 << 5) | 0x05, (900 << 5) | 0x12, (832 << 5) | 0x10, (-931 << 5) | 0x0f, (912 << 5) | 0x04, (807 << 5) | 0x11,
 289                 (-931 << 5) | 0x0f
 290 };
 291
 292 static const s16 coeff_2k_sb_3seg_0dqpsk[8] = {
 293         (622 << 5) | 0x0c, (941 << 5) | 0x04, (796 << 5) | 0x10, (622 << 5) | 0x0c, (982 << 5) | 0x0c, (519 << 5) | 0x02, (572 << 5) | 0x0e,
 294                 (982 << 5) | 0x0c
 295 };
 296
 297 static const s16 coeff_2k_sb_3seg_1dqpsk[8] = {
 298         (699 << 5) | 0x14, (607 << 5) | 0x04, (944 << 5) | 0x13, (699 << 5) | 0x14, (-720 << 5) | 0x0d, (640 << 5) | 0x03, (866 << 5) | 0x12,
 299                 (-720 << 5) | 0x0d
 300 };
 301
 302 static const s16 coeff_2k_sb_3seg[8] = {
 303         (664 << 5) | 0x0c, (925 << 5) | 0x03, (937 << 5) | 0x10, (664 << 5) | 0x0c, (-610 << 5) | 0x0a, (697 << 5) | 0x01, (836 << 5) | 0x0e,
 304                 (-610 << 5) | 0x0a
 305 };
 306
 307 static const s16 coeff_4k_sb_1seg_dqpsk[8] = {
 308         (-955 << 5) | 0x0e, (687 << 5) | 0x04, (818 << 5) | 0x10, (-955 << 5) | 0x0e, (-922 << 5) | 0x0d, (750 << 5) | 0x03, (665 << 5) | 0x0f,
 309                 (-922 << 5) | 0x0d
 310 };
 311
 312 static const s16 coeff_4k_sb_1seg[8] = {
 313         (638 << 5) | 0x0d, (683 << 5) | 0x02, (638 << 5) | 0x0d, (638 << 5) | 0x0d, (-655 << 5) | 0x0a, (517 << 5) | 0x00, (698 << 5) | 0x0d,
 314                 (-655 << 5) | 0x0a
 315 };
 316
 317 static const s16 coeff_4k_sb_3seg_0dqpsk_1dqpsk[8] = {
 318         (-707 << 5) | 0x14, (910 << 5) | 0x06, (889 << 5) | 0x16, (-707 << 5) | 0x14, (-958 << 5) | 0x13, (993 << 5) | 0x05, (523 << 5) | 0x14,
 319                 (-958 << 5) | 0x13
 320 };
 321
 322 static const s16 coeff_4k_sb_3seg_0dqpsk[8] = {
 323         (-723 << 5) | 0x13, (910 << 5) | 0x05, (777 << 5) | 0x14, (-723 << 5) | 0x13, (-568 << 5) | 0x0f, (547 << 5) | 0x03, (696 << 5) | 0x12,
 324                 (-568 << 5) | 0x0f
 325 };
 326
 327 static const s16 coeff_4k_sb_3seg_1dqpsk[8] = {
 328         (-940 << 5) | 0x15, (607 << 5) | 0x05, (915 << 5) | 0x16, (-940 << 5) | 0x15, (-848 << 5) | 0x13, (683 << 5) | 0x04, (543 << 5) | 0x14,
 329                 (-848 << 5) | 0x13
 330 };
 331
 332 static const s16 coeff_4k_sb_3seg[8] = {
 333         (612 << 5) | 0x12, (910 << 5) | 0x04, (864 << 5) | 0x14, (612 << 5) | 0x12, (-869 << 5) | 0x13, (683 << 5) | 0x02, (869 << 5) | 0x12,
 334                 (-869 << 5) | 0x13
 335 };
 336
 337 static const s16 coeff_8k_sb_1seg_dqpsk[8] = {
 338         (-835 << 5) | 0x12, (684 << 5) | 0x05, (735 << 5) | 0x14, (-835 << 5) | 0x12, (-598 << 5) | 0x10, (781 << 5) | 0x04, (739 << 5) | 0x13,
 339                 (-598 << 5) | 0x10
 340 };
 341
 342 static const s16 coeff_8k_sb_1seg[8] = {
 343         (673 << 5) | 0x0f, (683 << 5) | 0x03, (808 << 5) | 0x12, (673 << 5) | 0x0f, (585 << 5) | 0x0f, (512 << 5) | 0x01, (780 << 5) | 0x0f,
 344                 (585 << 5) | 0x0f
 345 };
 346
 347 static const s16 coeff_8k_sb_3seg_0dqpsk_1dqpsk[8] = {
 348         (863 << 5) | 0x17, (930 << 5) | 0x07, (878 << 5) | 0x19, (863 << 5) | 0x17, (0 << 5) | 0x14, (521 << 5) | 0x05, (980 << 5) | 0x18,
 349                 (0 << 5) | 0x14
 350 };
 351
 352 static const s16 coeff_8k_sb_3seg_0dqpsk[8] = {
 353         (-924 << 5) | 0x17, (910 << 5) | 0x06, (774 << 5) | 0x17, (-924 << 5) | 0x17, (-877 << 5) | 0x15, (565 << 5) | 0x04, (553 << 5) | 0x15,
 354                 (-877 << 5) | 0x15
 355 };
 356
 357 static const s16 coeff_8k_sb_3seg_1dqpsk[8] = {
 358         (-921 << 5) | 0x19, (607 << 5) | 0x06, (881 << 5) | 0x19, (-921 << 5) | 0x19, (-921 << 5) | 0x14, (713 << 5) | 0x05, (1018 << 5) | 0x18,
 359                 (-921 << 5) | 0x14
 360 };
 361
 362 static const s16 coeff_8k_sb_3seg[8] = {
 363         (514 << 5) | 0x14, (910 << 5) | 0x05, (861 << 5) | 0x17, (514 << 5) | 0x14, (690 << 5) | 0x14, (683 << 5) | 0x03, (662 << 5) | 0x15,
 364                 (690 << 5) | 0x14
 365 };
 366
 367 static const s16 ana_fe_coeff_3seg[24] = {
 368         81, 80, 78, 74, 68, 61, 54, 45, 37, 28, 19, 11, 4, 1022, 1017, 1013, 1010, 1008, 1008, 1008, 1008, 1010, 1014, 1017
 369 };
 370
 371 static const s16 ana_fe_coeff_1seg[24] = {
 372         249, 226, 164, 82, 5, 981, 970, 988, 1018, 20, 31, 26, 8, 1012, 1000, 1018, 1012, 8, 15, 14, 9, 3, 1017, 1003
 373 };
 374
 375 static const s16 ana_fe_coeff_13seg[24] = {
 376         396, 305, 105, -51, -77, -12, 41, 31, -11, -30, -11, 14, 15, -2, -13, -7, 5, 8, 1, -6, -7, -3, 0, 1
 377 };
 378
 379 static u16 fft_to_mode(struct dib8000_state *state)
 380 {
 381         u16 mode;
 382         switch (state->fe[0]->dtv_property_cache.transmission_mode) {
 383         case TRANSMISSION_MODE_2K:
 384                 mode = 1;
 385                 break;
 386         case TRANSMISSION_MODE_4K:
 387                 mode = 2;
 388                 break;
 389         default:
 390         case TRANSMISSION_MODE_AUTO:
 391         case TRANSMISSION_MODE_8K:
 392                 mode = 3;
 393                 break;
 394         }
 395         return mode;
 396 }
 397
 398 static void dib8000_set_acquisition_mode(struct dib8000_state *state)
 399 {
 400         u16 nud = dib8000_read_word(state, 298);
 401         nud |= (1 << 3) | (1 << 0);
 402         dprintk("acquisition mode activated\n");
 403         dib8000_write_word(state, 298, nud);
 404 }
 405 static int dib8000_set_output_mode(struct dvb_frontend *fe, int mode)
 406 {
 407         struct dib8000_state *state = fe->demodulator_priv;
 408         u16 outreg, fifo_threshold, smo_mode, sram = 0x0205;    /* by default SDRAM deintlv is enabled */
 409
 410         state->output_mode = mode;
 411         outreg = 0;
 412         fifo_threshold = 1792;
 413         smo_mode = (dib8000_read_word(state, 299) & 0x0050) | (1 << 1);
 414
 415         dprintk("-I-    Setting output mode for demod %p to %d\n",
 416                         &state->fe[0], mode);
 417
 418         switch (mode) {
 419         case OUTMODE_MPEG2_PAR_GATED_CLK:       // STBs with parallel gated clock
 420                 outreg = (1 << 10);     /* 0x0400 */
 421                 break;
 422         case OUTMODE_MPEG2_PAR_CONT_CLK:        // STBs with parallel continues clock
 423                 outreg = (1 << 10) | (1 << 6);  /* 0x0440 */
 424                 break;
 425         case OUTMODE_MPEG2_SERIAL:      // STBs with serial input
 426                 outreg = (1 << 10) | (2 << 6) | (0 << 1);       /* 0x0482 */
 427                 break;
 428         case OUTMODE_DIVERSITY:
 429                 if (state->cfg.hostbus_diversity) {
 430                         outreg = (1 << 10) | (4 << 6);  /* 0x0500 */
 431                         sram &= 0xfdff;
 432                 } else
 433                         sram |= 0x0c00;
 434                 break;
 435         case OUTMODE_MPEG2_FIFO:        // e.g. USB feeding
 436                 smo_mode |= (3 << 1);
 437                 fifo_threshold = 512;
 438                 outreg = (1 << 10) | (5 << 6);
 439                 break;
 440         case OUTMODE_HIGH_Z:    // disable
 441                 outreg = 0;
 442                 break;
 443
 444         case OUTMODE_ANALOG_ADC:
 445                 outreg = (1 << 10) | (3 << 6);
 446                 dib8000_set_acquisition_mode(state);
 447                 break;
 448
 449         default:
 450                 dprintk("Unhandled output_mode passed to be set for demod %p\n",
 451                                 &state->fe[0]);
 452                 return -EINVAL;
 453         }
 454
 455         if (state->cfg.output_mpeg2_in_188_bytes)
 456                 smo_mode |= (1 << 5);
 457
 458         dib8000_write_word(state, 299, smo_mode);
 459         dib8000_write_word(state, 300, fifo_threshold); /* synchronous fread */
 460         dib8000_write_word(state, 1286, outreg);
 461         dib8000_write_word(state, 1291, sram);
 462
 463         return 0;
 464 }
 465
 466 static int dib8000_set_diversity_in(struct dvb_frontend *fe, int onoff)
 467 {
 468         struct dib8000_state *state = fe->demodulator_priv;
 469         u16 tmp, sync_wait = dib8000_read_word(state, 273) & 0xfff0;
 470
 471         dprintk("set diversity input to %i\n", onoff);
 472         if (!state->differential_constellation) {
 473                 dib8000_write_word(state, 272, 1 << 9); //dvsy_off_lmod4 = 1
 474                 dib8000_write_word(state, 273, sync_wait | (1 << 2) | 2);       // sync_enable = 1; comb_mode = 2
 475         } else {
 476                 dib8000_write_word(state, 272, 0);      //dvsy_off_lmod4 = 0
 477                 dib8000_write_word(state, 273, sync_wait);      // sync_enable = 0; comb_mode = 0
 478         }
 479         state->diversity_onoff = onoff;
 480
 481         switch (onoff) {
 482         case 0:         /* only use the internal way - not the diversity input */
 483                 dib8000_write_word(state, 270, 1);
 484                 dib8000_write_word(state, 271, 0);
 485                 break;
 486         case 1:         /* both ways */
 487                 dib8000_write_word(state, 270, 6);
 488                 dib8000_write_word(state, 271, 6);
 489                 break;
 490         case 2:         /* only the diversity input */
 491                 dib8000_write_word(state, 270, 0);
 492                 dib8000_write_word(state, 271, 1);
 493                 break;
 494         }
 495
 496         if (state->revision == 0x8002) {
 497                 tmp = dib8000_read_word(state, 903);
 498                 dib8000_write_word(state, 903, tmp & ~(1 << 3));
 499                 msleep(30);
 500                 dib8000_write_word(state, 903, tmp | (1 << 3));
 501         }
 502         return 0;
 503 }
 504
 505 static void dib8000_set_power_mode(struct dib8000_state *state, enum dib8000_power_mode mode)
 506 {
 507         /* by default everything is going to be powered off */
 508         u16 reg_774 = 0x3fff, reg_775 = 0xffff, reg_776 = 0xffff,
 509                 reg_900 = (dib8000_read_word(state, 900) & 0xfffc) | 0x3,
 510                 reg_1280;
 511
 512         if (state->revision != 0x8090)
 513                 reg_1280 = (dib8000_read_word(state, 1280) & 0x00ff) | 0xff00;
 514         else
 515                 reg_1280 = (dib8000_read_word(state, 1280) & 0x707f) | 0x8f80;
 516
 517         /* now, depending on the requested mode, we power on */
 518         switch (mode) {
 519                 /* power up everything in the demod */
 520         case DIB8000_POWER_ALL:
 521                 reg_774 = 0x0000;
 522                 reg_775 = 0x0000;
 523                 reg_776 = 0x0000;
 524                 reg_900 &= 0xfffc;
 525                 if (state->revision != 0x8090)
 526                         reg_1280 &= 0x00ff;
 527                 else
 528                         reg_1280 &= 0x707f;
 529                 break;
 530         case DIB8000_POWER_INTERFACE_ONLY:
 531                 if (state->revision != 0x8090)
 532                         reg_1280 &= 0x00ff;
 533                 else
 534                         reg_1280 &= 0xfa7b;
 535                 break;
 536         }
 537
 538         dprintk("powermode : 774 : %x ; 775 : %x; 776 : %x ; 900 : %x; 1280 : %x\n", reg_774, reg_775, reg_776, reg_900, reg_1280);
 539         dib8000_write_word(state, 774, reg_774);
 540         dib8000_write_word(state, 775, reg_775);
 541         dib8000_write_word(state, 776, reg_776);
 542         dib8000_write_word(state, 900, reg_900);
 543         dib8000_write_word(state, 1280, reg_1280);
 544 }
 545
 546 static int dib8000_set_adc_state(struct dib8000_state *state, enum dibx000_adc_states no)
 547 {
 548         int ret = 0;
 549         u16 reg, reg_907 = dib8000_read_word(state, 907);
 550         u16 reg_908 = dib8000_read_word(state, 908);
 551
 552         switch (no) {
 553         case DIBX000_SLOW_ADC_ON:
 554                 if (state->revision != 0x8090) {
 555                         reg_908 |= (1 << 1) | (1 << 0);
 556                         ret |= dib8000_write_word(state, 908, reg_908);
 557                         reg_908 &= ~(1 << 1);
 558                 } else {
 559                         reg = dib8000_read_word(state, 1925);
 560                         /* en_slowAdc = 1 & reset_sladc = 1 */
 561                         dib8000_write_word(state, 1925, reg |
 562                                         (1<<4) | (1<<2));
 563
 564                         /* read access to make it works... strange ... */
 565                         reg = dib8000_read_word(state, 1925);
 566                         msleep(20);
 567                         /* en_slowAdc = 1 & reset_sladc = 0 */
 568                         dib8000_write_word(state, 1925, reg & ~(1<<4));
 569
 570                         reg = dib8000_read_word(state, 921) & ~((0x3 << 14)
 571                                         | (0x3 << 12));
 572                         /* ref = Vin1 => Vbg ; sel = Vin0 or Vin3 ;
 573                            (Vin2 = Vcm) */
 574                         dib8000_write_word(state, 921, reg | (1 << 14)
 575                                         | (3 << 12));
 576                 }
 577                 break;
 578
 579         case DIBX000_SLOW_ADC_OFF:
 580                 if (state->revision == 0x8090) {
 581                         reg = dib8000_read_word(state, 1925);
 582                         /* reset_sladc = 1 en_slowAdc = 0 */
 583                         dib8000_write_word(state, 1925,
 584                                         (reg & ~(1<<2)) | (1<<4));
 585                 }
 586                 reg_908 |= (1 << 1) | (1 << 0);
 587                 break;
 588
 589         case DIBX000_ADC_ON:
 590                 reg_907 &= 0x0fff;
 591                 reg_908 &= 0x0003;
 592                 break;
 593
 594         case DIBX000_ADC_OFF:   // leave the VBG voltage on
 595                 reg_907 = (1 << 13) | (1 << 12);
 596                 reg_908 = (1 << 6) | (1 << 5) | (1 << 4) | (1 << 3) | (1 << 1);
 597                 break;
 598
 599         case DIBX000_VBG_ENABLE:
 600                 reg_907 &= ~(1 << 15);
 601                 break;
 602
 603         case DIBX000_VBG_DISABLE:
 604                 reg_907 |= (1 << 15);
 605                 break;
 606
 607         default:
 608                 break;
 609         }
 610
 611         ret |= dib8000_write_word(state, 907, reg_907);
 612         ret |= dib8000_write_word(state, 908, reg_908);
 613
 614         return ret;
 615 }
 616
 617 static int dib8000_set_bandwidth(struct dvb_frontend *fe, u32 bw)
 618 {
 619         struct dib8000_state *state = fe->demodulator_priv;
 620         u32 timf;
 621
 622         if (bw == 0)
 623                 bw = 6000;
 624
 625         if (state->timf == 0) {
 626                 dprintk("using default timf\n");
 627                 timf = state->timf_default;
 628         } else {
 629                 dprintk("using updated timf\n");
 630                 timf = state->timf;
 631         }
 632
 633         dib8000_write_word(state, 29, (u16) ((timf >> 16) & 0xffff));
 634         dib8000_write_word(state, 30, (u16) ((timf) & 0xffff));
 635
 636         return 0;
 637 }
 638
 639 static int dib8000_sad_calib(struct dib8000_state *state)
 640 {
 641         u8 sad_sel = 3;
 642
 643         if (state->revision == 0x8090) {
 644                 dib8000_write_word(state, 922, (sad_sel << 2));
 645                 dib8000_write_word(state, 923, 2048);
 646
 647                 dib8000_write_word(state, 922, (sad_sel << 2) | 0x1);
 648                 dib8000_write_word(state, 922, (sad_sel << 2));
 649         } else {
 650                 /* internal */
 651                 dib8000_write_word(state, 923, (0 << 1) | (0 << 0));
 652                 dib8000_write_word(state, 924, 776);
 653
 654                 /* do the calibration */
 655                 dib8000_write_word(state, 923, (1 << 0));
 656                 dib8000_write_word(state, 923, (0 << 0));
 657         }
 658
 659         msleep(1);
 660         return 0;
 661 }
 662
 663 static int dib8000_set_wbd_ref(struct dvb_frontend *fe, u16 value)
 664 {
 665         struct dib8000_state *state = fe->demodulator_priv;
 666         if (value > 4095)
 667                 value = 4095;
 668         state->wbd_ref = value;
 669         return dib8000_write_word(state, 106, value);
 670 }
 671
 672 static void dib8000_reset_pll_common(struct dib8000_state *state, const struct dibx000_bandwidth_config *bw)
 673 {
 674         dprintk("ifreq: %d %x, inversion: %d\n", bw->ifreq, bw->ifreq, bw->ifreq >> 25);
 675         if (state->revision != 0x8090) {
 676                 dib8000_write_word(state, 23,
 677                                 (u16) (((bw->internal * 1000) >> 16) & 0xffff));
 678                 dib8000_write_word(state, 24,
 679                                 (u16) ((bw->internal * 1000) & 0xffff));
 680         } else {
 681                 dib8000_write_word(state, 23, (u16) (((bw->internal / 2 * 1000) >> 16) & 0xffff));
 682                 dib8000_write_word(state, 24,
 683                                 (u16) ((bw->internal  / 2 * 1000) & 0xffff));
 684         }
 685         dib8000_write_word(state, 27, (u16) ((bw->ifreq >> 16) & 0x01ff));
 686         dib8000_write_word(state, 28, (u16) (bw->ifreq & 0xffff));
 687         dib8000_write_word(state, 26, (u16) ((bw->ifreq >> 25) & 0x0003));
 688
 689         if (state->revision != 0x8090)
 690                 dib8000_write_word(state, 922, bw->sad_cfg);
 691 }
 692
 693 static void dib8000_reset_pll(struct dib8000_state *state)
 694 {
 695         const struct dibx000_bandwidth_config *pll = state->cfg.pll;
 696         u16 clk_cfg1, reg;
 697
 698         if (state->revision != 0x8090) {
 699                 dib8000_write_word(state, 901,
 700                                 (pll->pll_prediv << 8) | (pll->pll_ratio << 0));
 701
 702                 clk_cfg1 = (1 << 10) | (0 << 9) | (pll->IO_CLK_en_core << 8) |
 703                         (pll->bypclk_div << 5) | (pll->enable_refdiv << 4) |
 704                         (1 << 3) | (pll->pll_range << 1) |
 705                         (pll->pll_reset << 0);
 706
 707                 dib8000_write_word(state, 902, clk_cfg1);
 708                 clk_cfg1 = (clk_cfg1 & 0xfff7) | (pll->pll_bypass << 3);
 709                 dib8000_write_word(state, 902, clk_cfg1);
 710
 711                 dprintk("clk_cfg1: 0x%04x\n", clk_cfg1);
 712
 713                 /* smpl_cfg: P_refclksel=2, P_ensmplsel=1 nodivsmpl=1 */
 714                 if (state->cfg.pll->ADClkSrc == 0)
 715                         dib8000_write_word(state, 904,
 716                                         (0 << 15) | (0 << 12) | (0 << 10) |
 717                                         (pll->modulo << 8) |
 718                                         (pll->ADClkSrc << 7) | (0 << 1));
 719                 else if (state->cfg.refclksel != 0)
 720                         dib8000_write_word(state, 904, (0 << 15) | (1 << 12) |
 721                                         ((state->cfg.refclksel & 0x3) << 10) |
 722                                         (pll->modulo << 8) |
 723                                         (pll->ADClkSrc << 7) | (0 << 1));
 724                 else
 725                         dib8000_write_word(state, 904, (0 << 15) | (1 << 12) |
 726                                         (3 << 10) | (pll->modulo << 8) |
 727                                         (pll->ADClkSrc << 7) | (0 << 1));
 728         } else {
 729                 dib8000_write_word(state, 1856, (!pll->pll_reset<<13) |
 730                                 (pll->pll_range<<12) | (pll->pll_ratio<<6) |
 731                                 (pll->pll_prediv));
 732
 733                 reg = dib8000_read_word(state, 1857);
 734                 dib8000_write_word(state, 1857, reg|(!pll->pll_bypass<<15));
 735
 736                 reg = dib8000_read_word(state, 1858); /* Force clk out pll /2 */
 737                 dib8000_write_word(state, 1858, reg | 1);
 738
 739                 dib8000_write_word(state, 904, (pll->modulo << 8));
 740         }
 741
 742         dib8000_reset_pll_common(state, pll);
 743 }
 744
 745 static int dib8000_update_pll(struct dvb_frontend *fe,
 746                 struct dibx000_bandwidth_config *pll, u32 bw, u8 ratio)
 747 {
 748         struct dib8000_state *state = fe->demodulator_priv;
 749         u16 reg_1857, reg_1856 = dib8000_read_word(state, 1856);
 750         u8 loopdiv, prediv, oldprediv = state->cfg.pll->pll_prediv ;
 751         u32 internal, xtal;
 752
 753         /* get back old values */
 754         prediv = reg_1856 & 0x3f;
 755         loopdiv = (reg_1856 >> 6) & 0x3f;
 756
 757         if ((pll == NULL) || (pll->pll_prediv == prediv &&
 758                                 pll->pll_ratio == loopdiv))
 759                 return -EINVAL;
 760
 761         dprintk("Updating pll (prediv: old =  %d new = %d ; loopdiv : old = %d new = %d)\n", prediv, pll->pll_prediv, loopdiv, pll->pll_ratio);
 762         if (state->revision == 0x8090) {
 763                 reg_1856 &= 0xf000;
 764                 reg_1857 = dib8000_read_word(state, 1857);
 765                 /* disable PLL */
 766                 dib8000_write_word(state, 1857, reg_1857 & ~(1 << 15));
 767
 768                 dib8000_write_word(state, 1856, reg_1856 |
 769                                 ((pll->pll_ratio & 0x3f) << 6) |
 770                                 (pll->pll_prediv & 0x3f));
 771
 772                 /* write new system clk into P_sec_len */
 773                 internal = dib8000_read32(state, 23) / 1000;
 774                 dprintk("Old Internal = %d\n", internal);
 775                 xtal = 2 * (internal / loopdiv) * prediv;
 776                 internal = 1000 * (xtal/pll->pll_prediv) * pll->pll_ratio;
 777                 dprintk("Xtal = %d , New Fmem = %d New Fdemod = %d, New Fsampling = %d\n", xtal, internal/1000, internal/2000, internal/8000);
 778                 dprintk("New Internal = %d\n", internal);
 779
 780                 dib8000_write_word(state, 23,
 781                                 (u16) (((internal / 2) >> 16) & 0xffff));
 782                 dib8000_write_word(state, 24, (u16) ((internal / 2) & 0xffff));
 783                 /* enable PLL */
 784                 dib8000_write_word(state, 1857, reg_1857 | (1 << 15));
 785
 786                 while (((dib8000_read_word(state, 1856)>>15)&0x1) != 1)
 787                         dprintk("Waiting for PLL to lock\n");
 788
 789                 /* verify */
 790                 reg_1856 = dib8000_read_word(state, 1856);
 791                 dprintk("PLL Updated with prediv = %d and loopdiv = %d\n",
 792                                 reg_1856&0x3f, (reg_1856>>6)&0x3f);
 793         } else {
 794                 if (bw != state->current_demod_bw) {
 795                         /** Bandwidth change => force PLL update **/
 796                         dprintk("PLL: Bandwidth Change %d MHz -> %d MHz (prediv: %d->%d)\n", state->current_demod_bw / 1000, bw / 1000, oldprediv, state->cfg.pll->pll_prediv);
 797
 798                         if (state->cfg.pll->pll_prediv != oldprediv) {
 799                                 /** Full PLL change only if prediv is changed **/
 800
 801                                 /** full update => bypass and reconfigure **/
 802                                 dprintk("PLL: New Setting for %d MHz Bandwidth (prediv: %d, ratio: %d)\n", bw/1000, state->cfg.pll->pll_prediv, state->cfg.pll->pll_ratio);
 803                                 dib8000_write_word(state, 902, dib8000_read_word(state, 902) | (1<<3)); /* bypass PLL */
 804                                 dib8000_reset_pll(state);
 805                                 dib8000_write_word(state, 898, 0x0004); /* sad */
 806                         } else
 807                                 ratio = state->cfg.pll->pll_ratio;
 808
 809                         state->current_demod_bw = bw;
 810                 }
 811
 812                 if (ratio != 0) {
 813                         /** ratio update => only change ratio **/
 814                         dprintk("PLL: Update ratio (prediv: %d, ratio: %d)\n", state->cfg.pll->pll_prediv, ratio);
 815                         dib8000_write_word(state, 901, (state->cfg.pll->pll_prediv << 8) | (ratio << 0)); /* only the PLL ratio is updated. */
 816                 }
 817         }
 818
 819         return 0;
 820 }
 821
 822 static int dib8000_reset_gpio(struct dib8000_state *st)
 823 {
 824         /* reset the GPIOs */
 825         dib8000_write_word(st, 1029, st->cfg.gpio_dir);
 826         dib8000_write_word(st, 1030, st->cfg.gpio_val);
 827
 828         /* TODO 782 is P_gpio_od */
 829
 830         dib8000_write_word(st, 1032, st->cfg.gpio_pwm_pos);
 831
 832         dib8000_write_word(st, 1037, st->cfg.pwm_freq_div);
 833         return 0;
 834 }
 835
 836 static int dib8000_cfg_gpio(struct dib8000_state *st, u8 num, u8 dir, u8 val)
 837 {
 838         st->cfg.gpio_dir = dib8000_read_word(st, 1029);
 839         st->cfg.gpio_dir &= ~(1 << num);        /* reset the direction bit */
 840         st->cfg.gpio_dir |= (dir & 0x1) << num; /* set the new direction */
 841         dib8000_write_word(st, 1029, st->cfg.gpio_dir);
 842
 843         st->cfg.gpio_val = dib8000_read_word(st, 1030);
 844         st->cfg.gpio_val &= ~(1 << num);        /* reset the direction bit */
 845         st->cfg.gpio_val |= (val & 0x01) << num;        /* set the new value */
 846         dib8000_write_word(st, 1030, st->cfg.gpio_val);
 847
 848         dprintk("gpio dir: %x: gpio val: %x\n", st->cfg.gpio_dir, st->cfg.gpio_val);
 849
 850         return 0;
 851 }
 852
 853 static int dib8000_set_gpio(struct dvb_frontend *fe, u8 num, u8 dir, u8 val)
 854 {
 855         struct dib8000_state *state = fe->demodulator_priv;
 856         return dib8000_cfg_gpio(state, num, dir, val);
 857 }
 858
 859 static const u16 dib8000_defaults[] = {
 860         /* auto search configuration - lock0 by default waiting
 861          * for cpil_lock; lock1 cpil_lock; lock2 tmcc_sync_lock */
 862         3, 7,
 863         0x0004,
 864         0x0400,
 865         0x0814,
 866
 867         12, 11,
 868         0x001b,
 869         0x7740,
 870         0x005b,
 871         0x8d80,
 872         0x01c9,
 873         0xc380,
 874         0x0000,
 875         0x0080,
 876         0x0000,
 877         0x0090,
 878         0x0001,
 879         0xd4c0,
 880
 881         /*1, 32,
 882                 0x6680 // P_corm_thres Lock algorithms configuration */
 883
 884         11, 80,                 /* set ADC level to -16 */
 885         (1 << 13) - 825 - 117,
 886         (1 << 13) - 837 - 117,
 887         (1 << 13) - 811 - 117,
 888         (1 << 13) - 766 - 117,
 889         (1 << 13) - 737 - 117,
 890         (1 << 13) - 693 - 117,
 891         (1 << 13) - 648 - 117,
 892         (1 << 13) - 619 - 117,
 893         (1 << 13) - 575 - 117,
 894         (1 << 13) - 531 - 117,
 895         (1 << 13) - 501 - 117,
 896
 897         4, 108,
 898         0,
 899         0,
 900         0,
 901         0,
 902
 903         1, 175,
 904         0x0410,
 905         1, 179,
 906         8192,                   // P_fft_nb_to_cut
 907
 908         6, 181,
 909         0x2800,                 // P_coff_corthres_ ( 2k 4k 8k ) 0x2800
 910         0x2800,
 911         0x2800,
 912         0x2800,                 // P_coff_cpilthres_ ( 2k 4k 8k ) 0x2800
 913         0x2800,
 914         0x2800,
 915
 916         2, 193,
 917         0x0666,                 // P_pha3_thres
 918         0x0000,                 // P_cti_use_cpe, P_cti_use_prog
 919
 920         2, 205,
 921         0x200f,                 // P_cspu_regul, P_cspu_win_cut
 922         0x000f,                 // P_des_shift_work
 923
 924         5, 215,
 925         0x023d,                 // P_adp_regul_cnt
 926         0x00a4,                 // P_adp_noise_cnt
 927         0x00a4,                 // P_adp_regul_ext
 928         0x7ff0,                 // P_adp_noise_ext
 929         0x3ccc,                 // P_adp_fil
 930
 931         1, 230,
 932         0x0000,                 // P_2d_byp_ti_num
 933
 934         1, 263,
 935         0x800,                  //P_equal_thres_wgn
 936
 937         1, 268,
 938         (2 << 9) | 39,          // P_equal_ctrl_synchro, P_equal_speedmode
 939
 940         1, 270,
 941         0x0001,                 // P_div_lock0_wait
 942         1, 285,
 943         0x0020,                 //p_fec_
 944         1, 299,
 945         0x0062,                 /* P_smo_mode, P_smo_rs_discard, P_smo_fifo_flush, P_smo_pid_parse, P_smo_error_discard */
 946
 947         1, 338,
 948         (1 << 12) |             // P_ctrl_corm_thres4pre_freq_inh=1
 949                 (1 << 10) |
 950                 (0 << 9) |              /* P_ctrl_pre_freq_inh=0 */
 951                 (3 << 5) |              /* P_ctrl_pre_freq_step=3 */
 952                 (1 << 0),               /* P_pre_freq_win_len=1 */
 953
 954         0,
 955 };
 956
 957 static u16 dib8000_identify(struct i2c_device *client)
 958 {
 959         u16 value;
 960
 961         //because of glitches sometimes
 962         value = dib8000_i2c_read16(client, 896);
 963
 964         if ((value = dib8000_i2c_read16(client, 896)) != 0x01b3) {
 965                 dprintk("wrong Vendor ID (read=0x%x)\n", value);
 966                 return 0;
 967         }
 968
 969         value = dib8000_i2c_read16(client, 897);
 970         if (value != 0x8000 && value != 0x8001 &&
 971                         value != 0x8002 && value != 0x8090) {
 972                 dprintk("wrong Device ID (%x)\n", value);
 973                 return 0;
 974         }
 975
 976         switch (value) {
 977         case 0x8000:
 978                 dprintk("found DiB8000A\n");
 979                 break;
 980         case 0x8001:
 981                 dprintk("found DiB8000B\n");
 982                 break;
 983         case 0x8002:
 984                 dprintk("found DiB8000C\n");
 985                 break;
 986         case 0x8090:
 987                 dprintk("found DiB8096P\n");
 988                 break;
 989         }
 990         return value;
 991 }
 992
 993 static int dib8000_read_unc_blocks(struct dvb_frontend *fe, u32 *unc);
 994
 995 static void dib8000_reset_stats(struct dvb_frontend *fe)
 996 {
 997         struct dib8000_state *state = fe->demodulator_priv;
 998         struct dtv_frontend_properties *c = &state->fe[0]->dtv_property_cache;
 999         u32 ucb;
1000
1001         memset(&c->strength, 0, sizeof(c->strength));
1002         memset(&c->cnr, 0, sizeof(c->cnr));
1003         memset(&c->post_bit_error, 0, sizeof(c->post_bit_error));
1004         memset(&c->post_bit_count, 0, sizeof(c->post_bit_count));
1005         memset(&c->block_error, 0, sizeof(c->block_error));
1006
1007         c->strength.len = 1;
1008         c->cnr.len = 1;
1009         c->block_error.len = 1;
1010         c->block_count.len = 1;
1011         c->post_bit_error.len = 1;
1012         c->post_bit_count.len = 1;
1013
1014         c->strength.stat[0].scale = FE_SCALE_DECIBEL;
1015         c->strength.stat[0].uvalue = 0;
1016
1017         c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
1018         c->block_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
1019         c->block_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
1020         c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
1021         c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
1022
1023         dib8000_read_unc_blocks(fe, &ucb);
1024
1025         state->init_ucb = -ucb;
1026         state->ber_jiffies_stats = 0;
1027         state->per_jiffies_stats = 0;
1028         memset(&state->ber_jiffies_stats_layer, 0,
1029                sizeof(state->ber_jiffies_stats_layer));
1030 }
1031
1032 static int dib8000_reset(struct dvb_frontend *fe)
1033 {
1034         struct dib8000_state *state = fe->demodulator_priv;
1035
1036         if ((state->revision = dib8000_identify(&state->i2c)) == 0)
1037                 return -EINVAL;
1038
1039         /* sram lead in, rdy */
1040         if (state->revision != 0x8090)
1041                 dib8000_write_word(state, 1287, 0x0003);
1042
1043         if (state->revision == 0x8000)
1044                 dprintk("error : dib8000 MA not supported\n");
1045
1046         dibx000_reset_i2c_master(&state->i2c_master);
1047
1048         dib8000_set_power_mode(state, DIB8000_POWER_ALL);
1049
1050         /* always leave the VBG voltage on - it consumes almost nothing but takes a long time to start */
1051         dib8000_set_adc_state(state, DIBX000_ADC_OFF);
1052
1053         /* restart all parts */
1054         dib8000_write_word(state, 770, 0xffff);
1055         dib8000_write_word(state, 771, 0xffff);
1056         dib8000_write_word(state, 772, 0xfffc);
1057         dib8000_write_word(state, 898, 0x000c); /* restart sad */
1058         if (state->revision == 0x8090)
1059                 dib8000_write_word(state, 1280, 0x0045);
1060         else
1061                 dib8000_write_word(state, 1280, 0x004d);
1062         dib8000_write_word(state, 1281, 0x000c);
1063
1064         dib8000_write_word(state, 770, 0x0000);
1065         dib8000_write_word(state, 771, 0x0000);
1066         dib8000_write_word(state, 772, 0x0000);
1067         dib8000_write_word(state, 898, 0x0004); // sad
1068         dib8000_write_word(state, 1280, 0x0000);
1069         dib8000_write_word(state, 1281, 0x0000);
1070
1071         /* drives */
1072         if (state->revision != 0x8090) {
1073                 if (state->cfg.drives)
1074                         dib8000_write_word(state, 906, state->cfg.drives);
1075                 else {
1076                         dprintk("using standard PAD-drive-settings, please adjust settings in config-struct to be optimal.\n");
1077                         /* min drive SDRAM - not optimal - adjust */
1078                         dib8000_write_word(state, 906, 0x2d98);
1079                 }
1080         }
1081
1082         dib8000_reset_pll(state);
1083         if (state->revision != 0x8090)
1084                 dib8000_write_word(state, 898, 0x0004);
1085
1086         if (dib8000_reset_gpio(state) != 0)
1087                 dprintk("GPIO reset was not successful.\n");
1088
1089         if ((state->revision != 0x8090) &&
1090                         (dib8000_set_output_mode(fe, OUTMODE_HIGH_Z) != 0))
1091                 dprintk("OUTPUT_MODE could not be reset.\n");
1092
1093         state->current_agc = NULL;
1094
1095         // P_iqc_alpha_pha, P_iqc_alpha_amp, P_iqc_dcc_alpha, ...
1096         /* P_iqc_ca2 = 0; P_iqc_impnc_on = 0; P_iqc_mode = 0; */
1097         if (state->cfg.pll->ifreq == 0)
1098                 dib8000_write_word(state, 40, 0x0755);  /* P_iqc_corr_inh = 0 enable IQcorr block */
1099         else
1100                 dib8000_write_word(state, 40, 0x1f55);  /* P_iqc_corr_inh = 1 disable IQcorr block */
1101
1102         {
1103                 u16 l = 0, r;
1104                 const u16 *n;
1105                 n = dib8000_defaults;
1106                 l = *n++;
1107                 while (l) {
1108                         r = *n++;
1109                         do {
1110                                 dib8000_write_word(state, r, *n++);
1111                                 r++;
1112                         } while (--l);
1113                         l = *n++;
1114                 }
1115         }
1116
1117         state->isdbt_cfg_loaded = 0;
1118
1119         //div_cfg override for special configs
1120         if ((state->revision != 8090) && (state->cfg.div_cfg != 0))
1121                 dib8000_write_word(state, 903, state->cfg.div_cfg);
1122
1123         /* unforce divstr regardless whether i2c enumeration was done or not */
1124         dib8000_write_word(state, 1285, dib8000_read_word(state, 1285) & ~(1 << 1));
1125
1126         dib8000_set_bandwidth(fe, 6000);
1127
1128         dib8000_set_adc_state(state, DIBX000_SLOW_ADC_ON);
1129         dib8000_sad_calib(state);
1130         if (state->revision != 0x8090)
1131                 dib8000_set_adc_state(state, DIBX000_SLOW_ADC_OFF);
1132
1133         /* ber_rs_len = 3 */
1134         dib8000_write_word(state, 285, (dib8000_read_word(state, 285) & ~0x60) | (3 << 5));
1135
1136         dib8000_set_power_mode(state, DIB8000_POWER_INTERFACE_ONLY);
1137
1138         dib8000_reset_stats(fe);
1139
1140         return 0;
1141 }
1142
1143 static void dib8000_restart_agc(struct dib8000_state *state)
1144 {
1145         // P_restart_iqc & P_restart_agc
1146         dib8000_write_word(state, 770, 0x0a00);
1147         dib8000_write_word(state, 770, 0x0000);
1148 }
1149
1150 static int dib8000_update_lna(struct dib8000_state *state)
1151 {
1152         u16 dyn_gain;
1153
1154         if (state->cfg.update_lna) {
1155                 // read dyn_gain here (because it is demod-dependent and not tuner)
1156                 dyn_gain = dib8000_read_word(state, 390);
1157
1158                 if (state->cfg.update_lna(state->fe[0], dyn_gain)) {
1159                         dib8000_restart_agc(state);
1160                         return 1;
1161                 }
1162         }
1163         return 0;
1164 }
1165
1166 static int dib8000_set_agc_config(struct dib8000_state *state, u8 band)
1167 {
1168         struct dibx000_agc_config *agc = NULL;
1169         int i;
1170         u16 reg;
1171
1172         if (state->current_band == band && state->current_agc != NULL)
1173                 return 0;
1174         state->current_band = band;
1175
1176         for (i = 0; i < state->cfg.agc_config_count; i++)
1177                 if (state->cfg.agc[i].band_caps & band) {
1178                         agc = &state->cfg.agc[i];
1179                         break;
1180                 }
1181
1182         if (agc == NULL) {
1183                 dprintk("no valid AGC configuration found for band 0x%02x\n", band);
1184                 return -EINVAL;
1185         }
1186
1187         state->current_agc = agc;
1188
1189         /* AGC */
1190         dib8000_write_word(state, 76, agc->setup);
1191         dib8000_write_word(state, 77, agc->inv_gain);
1192         dib8000_write_word(state, 78, agc->time_stabiliz);
1193         dib8000_write_word(state, 101, (agc->alpha_level << 12) | agc->thlock);
1194
1195         // Demod AGC loop configuration
1196         dib8000_write_word(state, 102, (agc->alpha_mant << 5) | agc->alpha_exp);
1197         dib8000_write_word(state, 103, (agc->beta_mant << 6) | agc->beta_exp);
1198
1199         dprintk("WBD: ref: %d, sel: %d, active: %d, alpha: %d\n",
1200                 state->wbd_ref != 0 ? state->wbd_ref : agc->wbd_ref, agc->wbd_sel, !agc->perform_agc_softsplit, agc->wbd_sel);
1201
1202         /* AGC continued */
1203         if (state->wbd_ref != 0)
1204                 dib8000_write_word(state, 106, state->wbd_ref);
1205         else                    // use default
1206                 dib8000_write_word(state, 106, agc->wbd_ref);
1207
1208         if (state->revision == 0x8090) {
1209                 reg = dib8000_read_word(state, 922) & (0x3 << 2);
1210                 dib8000_write_word(state, 922, reg | (agc->wbd_sel << 2));
1211         }
1212
1213         dib8000_write_word(state, 107, (agc->wbd_alpha << 9) | (agc->perform_agc_softsplit << 8));
1214         dib8000_write_word(state, 108, agc->agc1_max);
1215         dib8000_write_word(state, 109, agc->agc1_min);
1216         dib8000_write_word(state, 110, agc->agc2_max);
1217         dib8000_write_word(state, 111, agc->agc2_min);
1218         dib8000_write_word(state, 112, (agc->agc1_pt1 << 8) | agc->agc1_pt2);
1219         dib8000_write_word(state, 113, (agc->agc1_slope1 << 8) | agc->agc1_slope2);
1220         dib8000_write_word(state, 114, (agc->agc2_pt1 << 8) | agc->agc2_pt2);
1221         dib8000_write_word(state, 115, (agc->agc2_slope1 << 8) | agc->agc2_slope2);
1222
1223         dib8000_write_word(state, 75, agc->agc1_pt3);
1224         if (state->revision != 0x8090)
1225                 dib8000_write_word(state, 923,
1226                                 (dib8000_read_word(state, 923) & 0xffe3) |
1227                                 (agc->wbd_inv << 4) | (agc->wbd_sel << 2));
1228
1229         return 0;
1230 }
1231
1232 static void dib8000_pwm_agc_reset(struct dvb_frontend *fe)
1233 {
1234         struct dib8000_state *state = fe->demodulator_priv;
1235         dib8000_set_adc_state(state, DIBX000_ADC_ON);
1236         dib8000_set_agc_config(state, (unsigned char)(BAND_OF_FREQUENCY(fe->dtv_property_cache.frequency / 1000)));
1237 }
1238
1239 static int dib8000_agc_soft_split(struct dib8000_state *state)
1240 {
1241         u16 agc, split_offset;
1242
1243         if (!state->current_agc || !state->current_agc->perform_agc_softsplit || state->current_agc->split.max == 0)
1244                 return 0;
1245
1246         // n_agc_global
1247         agc = dib8000_read_word(state, 390);
1248
1249         if (agc > state->current_agc->split.min_thres)
1250                 split_offset = state->current_agc->split.min;
1251         else if (agc < state->current_agc->split.max_thres)
1252                 split_offset = state->current_agc->split.max;
1253         else
1254                 split_offset = state->current_agc->split.max *
1255                         (agc - state->current_agc->split.min_thres) /
1256                         (state->current_agc->split.max_thres - state->current_agc->split.min_thres);
1257
1258         dprintk("AGC split_offset: %d\n", split_offset);
1259
1260         // P_agc_force_split and P_agc_split_offset
1261         dib8000_write_word(state, 107, (dib8000_read_word(state, 107) & 0xff00) | split_offset);
1262         return 5000;
1263 }
1264
1265 static int dib8000_agc_startup(struct dvb_frontend *fe)
1266 {
1267         struct dib8000_state *state = fe->demodulator_priv;
1268         enum frontend_tune_state *tune_state = &state->tune_state;
1269         int ret = 0;
1270         u16 reg;
1271         u32 upd_demod_gain_period = 0x8000;
1272
1273         switch (*tune_state) {
1274         case CT_AGC_START:
1275                 // set power-up level: interf+analog+AGC
1276
1277                 if (state->revision != 0x8090)
1278                         dib8000_set_adc_state(state, DIBX000_ADC_ON);
1279                 else {
1280                         dib8000_set_power_mode(state, DIB8000_POWER_ALL);
1281
1282                         reg = dib8000_read_word(state, 1947)&0xff00;
1283                         dib8000_write_word(state, 1946,
1284                                         upd_demod_gain_period & 0xFFFF);
1285                         /* bit 14 = enDemodGain */
1286                         dib8000_write_word(state, 1947, reg | (1<<14) |
1287                                         ((upd_demod_gain_period >> 16) & 0xFF));
1288
1289                         /* enable adc i & q */
1290                         reg = dib8000_read_word(state, 1920);
1291                         dib8000_write_word(state, 1920, (reg | 0x3) &
1292                                         (~(1 << 7)));
1293                 }
1294
1295                 if (dib8000_set_agc_config(state, (unsigned char)(BAND_OF_FREQUENCY(fe->dtv_property_cache.frequency / 1000))) != 0) {
1296                         *tune_state = CT_AGC_STOP;
1297                         state->status = FE_STATUS_TUNE_FAILED;
1298                         break;
1299                 }
1300
1301                 ret = 70;
1302                 *tune_state = CT_AGC_STEP_0;
1303                 break;
1304
1305         case CT_AGC_STEP_0:
1306                 //AGC initialization
1307                 if (state->cfg.agc_control)
1308                         state->cfg.agc_control(fe, 1);
1309
1310                 dib8000_restart_agc(state);
1311
1312                 // wait AGC rough lock time
1313                 ret = 50;
1314                 *tune_state = CT_AGC_STEP_1;
1315                 break;
1316
1317         case CT_AGC_STEP_1:
1318                 // wait AGC accurate lock time
1319                 ret = 70;
1320
1321                 if (dib8000_update_lna(state))
1322                         // wait only AGC rough lock time
1323                         ret = 50;
1324                 else
1325                         *tune_state = CT_AGC_STEP_2;
1326                 break;
1327
1328         case CT_AGC_STEP_2:
1329                 dib8000_agc_soft_split(state);
1330
1331                 if (state->cfg.agc_control)
1332                         state->cfg.agc_control(fe, 0);
1333
1334                 *tune_state = CT_AGC_STOP;
1335                 break;
1336         default:
1337                 ret = dib8000_agc_soft_split(state);
1338                 break;
1339         }
1340         return ret;
1341
1342 }
1343
1344 static void dib8096p_host_bus_drive(struct dib8000_state *state, u8 drive)
1345 {
1346         u16 reg;
1347
1348         drive &= 0x7;
1349
1350         /* drive host bus 2, 3, 4 */
1351         reg = dib8000_read_word(state, 1798) &
1352                 ~(0x7 | (0x7 << 6) | (0x7 << 12));
1353         reg |= (drive<<12) | (drive<<6) | drive;
1354         dib8000_write_word(state, 1798, reg);
1355
1356         /* drive host bus 5,6 */
1357         reg = dib8000_read_word(state, 1799) & ~((0x7 << 2) | (0x7 << 8));
1358         reg |= (drive<<8) | (drive<<2);
1359         dib8000_write_word(state, 1799, reg);
1360
1361         /* drive host bus 7, 8, 9 */
1362         reg = dib8000_read_word(state, 1800) &
1363                 ~(0x7 | (0x7 << 6) | (0x7 << 12));
1364         reg |= (drive<<12) | (drive<<6) | drive;
1365         dib8000_write_word(state, 1800, reg);
1366
1367         /* drive host bus 10, 11 */
1368         reg = dib8000_read_word(state, 1801) & ~((0x7 << 2) | (0x7 << 8));
1369         reg |= (drive<<8) | (drive<<2);
1370         dib8000_write_word(state, 1801, reg);
1371
1372         /* drive host bus 12, 13, 14 */
1373         reg = dib8000_read_word(state, 1802) &
1374                 ~(0x7 | (0x7 << 6) | (0x7 << 12));
1375         reg |= (drive<<12) | (drive<<6) | drive;
1376         dib8000_write_word(state, 1802, reg);
1377 }
1378
1379 static u32 dib8096p_calcSyncFreq(u32 P_Kin, u32 P_Kout,
1380                 u32 insertExtSynchro, u32 syncSize)
1381 {
1382         u32 quantif = 3;
1383         u32 nom = (insertExtSynchro * P_Kin+syncSize);
1384         u32 denom = P_Kout;
1385         u32 syncFreq = ((nom << quantif) / denom);
1386
1387         if ((syncFreq & ((1 << quantif) - 1)) != 0)
1388                 syncFreq = (syncFreq >> quantif) + 1;
1389         else
1390                 syncFreq = (syncFreq >> quantif);
1391
1392         if (syncFreq != 0)
1393                 syncFreq = syncFreq - 1;
1394
1395         return syncFreq;
1396 }
1397
1398 static void dib8096p_cfg_DibTx(struct dib8000_state *state, u32 P_Kin,
1399                 u32 P_Kout, u32 insertExtSynchro, u32 synchroMode,
1400                 u32 syncWord, u32 syncSize)
1401 {
1402         dprintk("Configure DibStream Tx\n");
1403
1404         dib8000_write_word(state, 1615, 1);
1405         dib8000_write_word(state, 1603, P_Kin);
1406         dib8000_write_word(state, 1605, P_Kout);
1407         dib8000_write_word(state, 1606, insertExtSynchro);
1408         dib8000_write_word(state, 1608, synchroMode);
1409         dib8000_write_word(state, 1609, (syncWord >> 16) & 0xffff);
1410         dib8000_write_word(state, 1610, syncWord & 0xffff);
1411         dib8000_write_word(state, 1612, syncSize);
1412         dib8000_write_word(state, 1615, 0);
1413 }
1414
1415 static void dib8096p_cfg_DibRx(struct dib8000_state *state, u32 P_Kin,
1416                 u32 P_Kout, u32 synchroMode, u32 insertExtSynchro,
1417                 u32 syncWord, u32 syncSize, u32 dataOutRate)
1418 {
1419         u32 syncFreq;
1420
1421         dprintk("Configure DibStream Rx synchroMode = %d\n", synchroMode);
1422
1423         if ((P_Kin != 0) && (P_Kout != 0)) {
1424                 syncFreq = dib8096p_calcSyncFreq(P_Kin, P_Kout,
1425                                 insertExtSynchro, syncSize);
1426                 dib8000_write_word(state, 1542, syncFreq);
1427         }
1428
1429         dib8000_write_word(state, 1554, 1);
1430         dib8000_write_word(state, 1536, P_Kin);
1431         dib8000_write_word(state, 1537, P_Kout);
1432         dib8000_write_word(state, 1539, synchroMode);
1433         dib8000_write_word(state, 1540, (syncWord >> 16) & 0xffff);
1434         dib8000_write_word(state, 1541, syncWord & 0xffff);
1435         dib8000_write_word(state, 1543, syncSize);
1436         dib8000_write_word(state, 1544, dataOutRate);
1437         dib8000_write_word(state, 1554, 0);
1438 }
1439
1440 static void dib8096p_enMpegMux(struct dib8000_state *state, int onoff)
1441 {
1442         u16 reg_1287;
1443
1444         reg_1287 = dib8000_read_word(state, 1287);
1445
1446         switch (onoff) {
1447         case 1:
1448                         reg_1287 &= ~(1 << 8);
1449                         break;
1450         case 0:
1451                         reg_1287 |= (1 << 8);
1452                         break;
1453         }
1454
1455         dib8000_write_word(state, 1287, reg_1287);
1456 }
1457
1458 static void dib8096p_configMpegMux(struct dib8000_state *state,
1459                 u16 pulseWidth, u16 enSerialMode, u16 enSerialClkDiv2)
1460 {
1461         u16 reg_1287;
1462
1463         dprintk("Enable Mpeg mux\n");
1464
1465         dib8096p_enMpegMux(state, 0);
1466
1467         /* If the input mode is MPEG do not divide the serial clock */
1468         if ((enSerialMode == 1) && (state->input_mode_mpeg == 1))
1469                 enSerialClkDiv2 = 0;
1470
1471         reg_1287 = ((pulseWidth & 0x1f) << 3) |
1472                 ((enSerialMode & 0x1) << 2) | (enSerialClkDiv2 & 0x1);
1473         dib8000_write_word(state, 1287, reg_1287);
1474
1475         dib8096p_enMpegMux(state, 1);
1476 }
1477
1478 static void dib8096p_setDibTxMux(struct dib8000_state *state, int mode)
1479 {
1480         u16 reg_1288 = dib8000_read_word(state, 1288) & ~(0x7 << 7);
1481
1482         switch (mode) {
1483         case MPEG_ON_DIBTX:
1484                         dprintk("SET MPEG ON DIBSTREAM TX\n");
1485                         dib8096p_cfg_DibTx(state, 8, 5, 0, 0, 0, 0);
1486                         reg_1288 |= (1 << 9); break;
1487         case DIV_ON_DIBTX:
1488                         dprintk("SET DIV_OUT ON DIBSTREAM TX\n");
1489                         dib8096p_cfg_DibTx(state, 5, 5, 0, 0, 0, 0);
1490                         reg_1288 |= (1 << 8); break;
1491         case ADC_ON_DIBTX:
1492                         dprintk("SET ADC_OUT ON DIBSTREAM TX\n");
1493                         dib8096p_cfg_DibTx(state, 20, 5, 10, 0, 0, 0);
1494                         reg_1288 |= (1 << 7); break;
1495         default:
1496                         break;
1497         }
1498         dib8000_write_word(state, 1288, reg_1288);
1499 }
1500
1501 static void dib8096p_setHostBusMux(struct dib8000_state *state, int mode)
1502 {
1503         u16 reg_1288 = dib8000_read_word(state, 1288) & ~(0x7 << 4);
1504
1505         switch (mode) {
1506         case DEMOUT_ON_HOSTBUS:
1507                         dprintk("SET DEM OUT OLD INTERF ON HOST BUS\n");
1508                         dib8096p_enMpegMux(state, 0);
1509                         reg_1288 |= (1 << 6);
1510                         break;
1511         case DIBTX_ON_HOSTBUS:
1512                         dprintk("SET DIBSTREAM TX ON HOST BUS\n");
1513                         dib8096p_enMpegMux(state, 0);
1514                         reg_1288 |= (1 << 5);
1515                         break;
1516         case MPEG_ON_HOSTBUS:
1517                         dprintk("SET MPEG MUX ON HOST BUS\n");
1518                         reg_1288 |= (1 << 4);
1519                         break;
1520         default:
1521                         break;
1522         }
1523         dib8000_write_word(state, 1288, reg_1288);
1524 }
1525
1526 static int dib8096p_set_diversity_in(struct dvb_frontend *fe, int onoff)
1527 {
1528         struct dib8000_state *state = fe->demodulator_priv;
1529         u16 reg_1287;
1530
1531         switch (onoff) {
1532         case 0: /* only use the internal way - not the diversity input */
1533                         dprintk("%s mode OFF : by default Enable Mpeg INPUT\n",
1534                                         __func__);
1535                         /* outputRate = 8 */
1536                         dib8096p_cfg_DibRx(state, 8, 5, 0, 0, 0, 8, 0);
1537
1538                         /* Do not divide the serial clock of MPEG MUX in
1539                            SERIAL MODE in case input mode MPEG is used */
1540                         reg_1287 = dib8000_read_word(state, 1287);
1541                         /* enSerialClkDiv2 == 1 ? */
1542                         if ((reg_1287 & 0x1) == 1) {
1543                                 /* force enSerialClkDiv2 = 0 */
1544                                 reg_1287 &= ~0x1;
1545                                 dib8000_write_word(state, 1287, reg_1287);
1546                         }
1547                         state->input_mode_mpeg = 1;
1548                         break;
1549         case 1: /* both ways */
1550         case 2: /* only the diversity input */
1551                         dprintk("%s ON : Enable diversity INPUT\n", __func__);
1552                         dib8096p_cfg_DibRx(state, 5, 5, 0, 0, 0, 0, 0);
1553                         state->input_mode_mpeg = 0;
1554                         break;
1555         }
1556
1557         dib8000_set_diversity_in(state->fe[0], onoff);
1558         return 0;
1559 }
1560
1561 static int dib8096p_set_output_mode(struct dvb_frontend *fe, int mode)
1562 {
1563         struct dib8000_state *state = fe->demodulator_priv;
1564         u16 outreg, smo_mode, fifo_threshold;
1565         u8 prefer_mpeg_mux_use = 1;
1566         int ret = 0;
1567
1568         state->output_mode = mode;
1569         dib8096p_host_bus_drive(state, 1);
1570
1571         fifo_threshold = 1792;
1572         smo_mode = (dib8000_read_word(state, 299) & 0x0050) | (1 << 1);
1573         outreg   = dib8000_read_word(state, 1286) &
1574                 ~((1 << 10) | (0x7 << 6) | (1 << 1));
1575
1576         switch (mode) {
1577         case OUTMODE_HIGH_Z:
1578                         outreg = 0;
1579                         break;
1580
1581         case OUTMODE_MPEG2_SERIAL:
1582                         if (prefer_mpeg_mux_use) {
1583                                 dprintk("dib8096P setting output mode TS_SERIAL using Mpeg Mux\n");
1584                                 dib8096p_configMpegMux(state, 3, 1, 1);
1585                                 dib8096p_setHostBusMux(state, MPEG_ON_HOSTBUS);
1586                         } else {/* Use Smooth block */
1587                                 dprintk("dib8096P setting output mode TS_SERIAL using Smooth bloc\n");
1588                                 dib8096p_setHostBusMux(state,
1589                                                 DEMOUT_ON_HOSTBUS);
1590                                 outreg |= (2 << 6) | (0 << 1);
1591                         }
1592                         break;
1593
1594         case OUTMODE_MPEG2_PAR_GATED_CLK:
1595                         if (prefer_mpeg_mux_use) {
1596                                 dprintk("dib8096P setting output mode TS_PARALLEL_GATED using Mpeg Mux\n");
1597                                 dib8096p_configMpegMux(state, 2, 0, 0);
1598                                 dib8096p_setHostBusMux(state, MPEG_ON_HOSTBUS);
1599                         } else { /* Use Smooth block */
1600                                 dprintk("dib8096P setting output mode TS_PARALLEL_GATED using Smooth block\n");
1601                                 dib8096p_setHostBusMux(state,
1602                                                 DEMOUT_ON_HOSTBUS);
1603                                 outreg |= (0 << 6);
1604                         }
1605                         break;
1606
1607         case OUTMODE_MPEG2_PAR_CONT_CLK: /* Using Smooth block only */
1608                         dprintk("dib8096P setting output mode TS_PARALLEL_CONT using Smooth block\n");
1609                         dib8096p_setHostBusMux(state, DEMOUT_ON_HOSTBUS);
1610                         outreg |= (1 << 6);
1611                         break;
1612
1613         case OUTMODE_MPEG2_FIFO:
1614                         /* Using Smooth block because not supported
1615                            by new Mpeg Mux bloc */
1616                         dprintk("dib8096P setting output mode TS_FIFO using Smooth block\n");
1617                         dib8096p_setHostBusMux(state, DEMOUT_ON_HOSTBUS);
1618                         outreg |= (5 << 6);
1619                         smo_mode |= (3 << 1);
1620                         fifo_threshold = 512;
1621                         break;
1622
1623         case OUTMODE_DIVERSITY:
1624                         dprintk("dib8096P setting output mode MODE_DIVERSITY\n");
1625                         dib8096p_setDibTxMux(state, DIV_ON_DIBTX);
1626                         dib8096p_setHostBusMux(state, DIBTX_ON_HOSTBUS);
1627                         break;
1628
1629         case OUTMODE_ANALOG_ADC:
1630                         dprintk("dib8096P setting output mode MODE_ANALOG_ADC\n");
1631                         dib8096p_setDibTxMux(state, ADC_ON_DIBTX);
1632                         dib8096p_setHostBusMux(state, DIBTX_ON_HOSTBUS);
1633                         break;
1634         }
1635
1636         if (mode != OUTMODE_HIGH_Z)
1637                 outreg |= (1<<10);
1638
1639         dprintk("output_mpeg2_in_188_bytes = %d\n",
1640                         state->cfg.output_mpeg2_in_188_bytes);
1641         if (state->cfg.output_mpeg2_in_188_bytes)
1642                 smo_mode |= (1 << 5);
1643
1644         ret |= dib8000_write_word(state, 299, smo_mode);
1645         /* synchronous fread */
1646         ret |= dib8000_write_word(state, 299 + 1, fifo_threshold);
1647         ret |= dib8000_write_word(state, 1286, outreg);
1648
1649         return ret;
1650 }
1651
1652 static int map_addr_to_serpar_number(struct i2c_msg *msg)
1653 {
1654         if (msg->buf[0] <= 15)
1655                 msg->buf[0] -= 1;
1656         else if (msg->buf[0] == 17)
1657                 msg->buf[0] = 15;
1658         else if (msg->buf[0] == 16)
1659                 msg->buf[0] = 17;
1660         else if (msg->buf[0] == 19)
1661                 msg->buf[0] = 16;
1662         else if (msg->buf[0] >= 21 && msg->buf[0] <= 25)
1663                 msg->buf[0] -= 3;
1664         else if (msg->buf[0] == 28)
1665                 msg->buf[0] = 23;
1666         else if (msg->buf[0] == 99)
1667                 msg->buf[0] = 99;
1668         else
1669                 return -EINVAL;
1670         return 0;
1671 }
1672
1673 static int dib8096p_tuner_write_serpar(struct i2c_adapter *i2c_adap,
1674                 struct i2c_msg msg[], int num)
1675 {
1676         struct dib8000_state *state = i2c_get_adapdata(i2c_adap);
1677         u8 n_overflow = 1;
1678         u16 i = 1000;
1679         u16 serpar_num = msg[0].buf[0];
1680
1681         while (n_overflow == 1 && i) {
1682                 n_overflow = (dib8000_read_word(state, 1984) >> 1) & 0x1;
1683                 i--;
1684                 if (i == 0)
1685                         dprintk("Tuner ITF: write busy (overflow)\n");
1686         }
1687         dib8000_write_word(state, 1985, (1 << 6) | (serpar_num & 0x3f));
1688         dib8000_write_word(state, 1986, (msg[0].buf[1] << 8) | msg[0].buf[2]);
1689
1690         return num;
1691 }
1692
1693 static int dib8096p_tuner_read_serpar(struct i2c_adapter *i2c_adap,
1694                 struct i2c_msg msg[], int num)
1695 {
1696         struct dib8000_state *state = i2c_get_adapdata(i2c_adap);
1697         u8 n_overflow = 1, n_empty = 1;
1698         u16 i = 1000;
1699         u16 serpar_num = msg[0].buf[0];
1700         u16 read_word;
1701
1702         while (n_overflow == 1 && i) {
1703                 n_overflow = (dib8000_read_word(state, 1984) >> 1) & 0x1;
1704                 i--;
1705                 if (i == 0)
1706                         dprintk("TunerITF: read busy (overflow)\n");
1707         }
1708         dib8000_write_word(state, 1985, (0<<6) | (serpar_num&0x3f));
1709
1710         i = 1000;
1711         while (n_empty == 1 && i) {
1712                 n_empty = dib8000_read_word(state, 1984)&0x1;
1713                 i--;
1714                 if (i == 0)
1715                         dprintk("TunerITF: read busy (empty)\n");
1716         }
1717
1718         read_word = dib8000_read_word(state, 1987);
1719         msg[1].buf[0] = (read_word >> 8) & 0xff;
1720         msg[1].buf[1] = (read_word) & 0xff;
1721
1722         return num;
1723 }
1724
1725 static int dib8096p_tuner_rw_serpar(struct i2c_adapter *i2c_adap,
1726                 struct i2c_msg msg[], int num)
1727 {
1728         if (map_addr_to_serpar_number(&msg[0]) == 0) {
1729                 if (num == 1) /* write */
1730                         return dib8096p_tuner_write_serpar(i2c_adap, msg, 1);
1731                 else /* read */
1732                         return dib8096p_tuner_read_serpar(i2c_adap, msg, 2);
1733         }
1734         return num;
1735 }
1736
1737 static int dib8096p_rw_on_apb(struct i2c_adapter *i2c_adap,
1738                 struct i2c_msg msg[], int num, u16 apb_address)
1739 {
1740         struct dib8000_state *state = i2c_get_adapdata(i2c_adap);
1741         u16 word;
1742
1743         if (num == 1) {         /* write */
1744                 dib8000_write_word(state, apb_address,
1745                                 ((msg[0].buf[1] << 8) | (msg[0].buf[2])));
1746         } else {
1747                 word = dib8000_read_word(state, apb_address);
1748                 msg[1].buf[0] = (word >> 8) & 0xff;
1749                 msg[1].buf[1] = (word) & 0xff;
1750         }
1751         return num;
1752 }
1753
1754 static int dib8096p_tuner_xfer(struct i2c_adapter *i2c_adap,
1755                 struct i2c_msg msg[], int num)
1756 {
1757         struct dib8000_state *state = i2c_get_adapdata(i2c_adap);
1758         u16 apb_address = 0, word;
1759         int i = 0;
1760
1761         switch (msg[0].buf[0]) {
1762         case 0x12:
1763                         apb_address = 1920;
1764                         break;
1765         case 0x14:
1766                         apb_address = 1921;
1767                         break;
1768         case 0x24:
1769                         apb_address = 1922;
1770                         break;
1771         case 0x1a:
1772                         apb_address = 1923;
1773                         break;
1774         case 0x22:
1775                         apb_address = 1924;
1776                         break;
1777         case 0x33:
1778                         apb_address = 1926;
1779                         break;
1780         case 0x34:
1781                         apb_address = 1927;
1782                         break;
1783         case 0x35:
1784                         apb_address = 1928;
1785                         break;
1786         case 0x36:
1787                         apb_address = 1929;
1788                         break;
1789         case 0x37:
1790                         apb_address = 1930;
1791                         break;
1792         case 0x38:
1793                         apb_address = 1931;
1794                         break;
1795         case 0x39:
1796                         apb_address = 1932;
1797                         break;
1798         case 0x2a:
1799                         apb_address = 1935;
1800                         break;
1801         case 0x2b:
1802                         apb_address = 1936;
1803                         break;
1804         case 0x2c:
1805                         apb_address = 1937;
1806                         break;
1807         case 0x2d:
1808                         apb_address = 1938;
1809                         break;
1810         case 0x2e:
1811                         apb_address = 1939;
1812                         break;
1813         case 0x2f:
1814                         apb_address = 1940;
1815                         break;
1816         case 0x30:
1817                         apb_address = 1941;
1818                         break;
1819         case 0x31:
1820                         apb_address = 1942;
1821                         break;
1822         case 0x32:
1823                         apb_address = 1943;
1824                         break;
1825         case 0x3e:
1826                         apb_address = 1944;
1827                         break;
1828         case 0x3f:
1829                         apb_address = 1945;
1830                         break;
1831         case 0x40:
1832                         apb_address = 1948;
1833                         break;
1834         case 0x25:
1835                         apb_address = 936;
1836                         break;
1837         case 0x26:
1838                         apb_address = 937;
1839                         break;
1840         case 0x27:
1841                         apb_address = 938;
1842                         break;
1843         case 0x28:
1844                         apb_address = 939;
1845                         break;
1846         case 0x1d:
1847                         /* get sad sel request */
1848                         i = ((dib8000_read_word(state, 921) >> 12)&0x3);
1849                         word = dib8000_read_word(state, 924+i);
1850                         msg[1].buf[0] = (word >> 8) & 0xff;
1851                         msg[1].buf[1] = (word) & 0xff;
1852                         return num;
1853         case 0x1f:
1854                         if (num == 1) { /* write */
1855                                 word = (u16) ((msg[0].buf[1] << 8) |
1856                                                 msg[0].buf[2]);
1857                                 /* in the VGAMODE Sel are located on bit 0/1 */
1858                                 word &= 0x3;
1859                                 word = (dib8000_read_word(state, 921) &
1860                                                 ~(3<<12)) | (word<<12);
1861                                 /* Set the proper input */
1862                                 dib8000_write_word(state, 921, word);
1863                                 return num;
1864                         }
1865         }
1866
1867         if (apb_address != 0) /* R/W access via APB */
1868                 return dib8096p_rw_on_apb(i2c_adap, msg, num, apb_address);
1869         else  /* R/W access via SERPAR  */
1870                 return dib8096p_tuner_rw_serpar(i2c_adap, msg, num);
1871
1872         return 0;
1873 }
1874
1875 static u32 dib8096p_i2c_func(struct i2c_adapter *adapter)
1876 {
1877         return I2C_FUNC_I2C;
1878 }
1879
1880 static const struct i2c_algorithm dib8096p_tuner_xfer_algo = {
1881         .master_xfer = dib8096p_tuner_xfer,
1882         .functionality = dib8096p_i2c_func,
1883 };
1884
1885 static struct i2c_adapter *dib8096p_get_i2c_tuner(struct dvb_frontend *fe)
1886 {
1887         struct dib8000_state *st = fe->demodulator_priv;
1888         return &st->dib8096p_tuner_adap;
1889 }
1890
1891 static int dib8096p_tuner_sleep(struct dvb_frontend *fe, int onoff)
1892 {
1893         struct dib8000_state *state = fe->demodulator_priv;
1894         u16 en_cur_state;
1895
1896         dprintk("sleep dib8096p: %d\n", onoff);
1897
1898         en_cur_state = dib8000_read_word(state, 1922);
1899
1900         /* LNAs and MIX are ON and therefore it is a valid configuration */
1901         if (en_cur_state > 0xff)
1902                 state->tuner_enable = en_cur_state ;
1903
1904         if (onoff)
1905                 en_cur_state &= 0x00ff;
1906         else {
1907                 if (state->tuner_enable != 0)
1908                         en_cur_state = state->tuner_enable;
1909         }
1910
1911         dib8000_write_word(state, 1922, en_cur_state);
1912
1913         return 0;
1914 }
1915
1916 static const s32 lut_1000ln_mant[] =
1917 {
1918         908, 7003, 7090, 7170, 7244, 7313, 7377, 7438, 7495, 7549, 7600
1919 };
1920
1921 static s32 dib8000_get_adc_power(struct dvb_frontend *fe, u8 mode)
1922 {
1923         struct dib8000_state *state = fe->demodulator_priv;
1924         u32 ix = 0, tmp_val = 0, exp = 0, mant = 0;
1925         s32 val;
1926
1927         val = dib8000_read32(state, 384);
1928         if (mode) {
1929                 tmp_val = val;
1930                 while (tmp_val >>= 1)
1931                         exp++;
1932                 mant = (val * 1000 / (1<<exp));
1933                 ix = (u8)((mant-1000)/100); /* index of the LUT */
1934                 val = (lut_1000ln_mant[ix] + 693*(exp-20) - 6908);
1935                 val = (val*256)/1000;
1936         }
1937         return val;
1938 }
1939
1940 static int dib8090p_get_dc_power(struct dvb_frontend *fe, u8 IQ)
1941 {
1942         struct dib8000_state *state = fe->demodulator_priv;
1943         int val = 0;
1944
1945         switch (IQ) {
1946         case 1:
1947                         val = dib8000_read_word(state, 403);
1948                         break;
1949         case 0:
1950                         val = dib8000_read_word(state, 404);
1951                         break;
1952         }
1953         if (val  & 0x200)
1954                 val -= 1024;
1955
1956         return val;
1957 }
1958
1959 static void dib8000_update_timf(struct dib8000_state *state)
1960 {
1961         u32 timf = state->timf = dib8000_read32(state, 435);
1962
1963         dib8000_write_word(state, 29, (u16) (timf >> 16));
1964         dib8000_write_word(state, 30, (u16) (timf & 0xffff));
1965         dprintk("Updated timing frequency: %d (default: %d)\n", state->timf, state->timf_default);
1966 }
1967
1968 static u32 dib8000_ctrl_timf(struct dvb_frontend *fe, uint8_t op, uint32_t timf)
1969 {
1970         struct dib8000_state *state = fe->demodulator_priv;
1971
1972         switch (op) {
1973         case DEMOD_TIMF_SET:
1974                         state->timf = timf;
1975                         break;
1976         case DEMOD_TIMF_UPDATE:
1977                         dib8000_update_timf(state);
1978                         break;
1979         case DEMOD_TIMF_GET:
1980                         break;
1981         }
1982         dib8000_set_bandwidth(state->fe[0], 6000);
1983
1984         return state->timf;
1985 }
1986
1987 static const u16 adc_target_16dB[11] = {
1988         7250, 7238, 7264, 7309, 7338, 7382, 7427, 7456, 7500, 7544, 7574
1989 };
1990
1991 static const u8 permu_seg[] = { 6, 5, 7, 4, 8, 3, 9, 2, 10, 1, 11, 0, 12 };
1992
1993 static u16 dib8000_set_layer(struct dib8000_state *state, u8 layer_index, u16 max_constellation)
1994 {
1995         u8  cr, constellation, time_intlv;
1996         struct dtv_frontend_properties *c = &state->fe[0]->dtv_property_cache;
1997
1998         switch (c->layer[layer_index].modulation) {
1999         case DQPSK:
2000                         constellation = 0;
2001                         break;
2002         case  QPSK:
2003                         constellation = 1;
2004                         break;
2005         case QAM_16:
2006                         constellation = 2;
2007                         break;
2008         case QAM_64:
2009         default:
2010                         constellation = 3;
2011                         break;
2012         }
2013
2014         switch (c->layer[layer_index].fec) {
2015         case FEC_1_2:
2016                         cr = 1;
2017                         break;
2018         case FEC_2_3:
2019                         cr = 2;
2020                         break;
2021         case FEC_3_4:
2022                         cr = 3;
2023                         break;
2024         case FEC_5_6:
2025                         cr = 5;
2026                         break;
2027         case FEC_7_8:
2028         default:
2029                         cr = 7;
2030                         break;
2031         }
2032
2033         time_intlv = fls(c->layer[layer_index].interleaving);
2034         if (time_intlv > 3 && !(time_intlv == 4 && c->isdbt_sb_mode == 1))
2035                 time_intlv = 0;
2036
2037         dib8000_write_word(state, 2 + layer_index, (constellation << 10) | ((c->layer[layer_index].segment_count & 0xf) << 6) | (cr << 3) | time_intlv);
2038         if (c->layer[layer_index].segment_count > 0) {
2039                 switch (max_constellation) {
2040                 case DQPSK:
2041                 case QPSK:
2042                                 if (c->layer[layer_index].modulation == QAM_16 || c->layer[layer_index].modulation == QAM_64)
2043                                         max_constellation = c->layer[layer_index].modulation;
2044                                 break;
2045                 case QAM_16:
2046                                 if (c->layer[layer_index].modulation == QAM_64)
2047                                         max_constellation = c->layer[layer_index].modulation;
2048                                 break;
2049                 }
2050         }
2051
2052         return  max_constellation;
2053 }
2054
2055 static const u16 adp_Q64[4] = {0x0148, 0xfff0, 0x00a4, 0xfff8}; /* P_adp_regul_cnt 0.04, P_adp_noise_cnt -0.002, P_adp_regul_ext 0.02, P_adp_noise_ext -0.001 */
2056 static const u16 adp_Q16[4] = {0x023d, 0xffdf, 0x00a4, 0xfff0}; /* P_adp_regul_cnt 0.07, P_adp_noise_cnt -0.004, P_adp_regul_ext 0.02, P_adp_noise_ext -0.002 */
2057 static const u16 adp_Qdefault[4] = {0x099a, 0xffae, 0x0333, 0xfff8}; /* P_adp_regul_cnt 0.3,  P_adp_noise_cnt -0.01,  P_adp_regul_ext 0.1,  P_adp_noise_ext -0.002 */
2058 static u16 dib8000_adp_fine_tune(struct dib8000_state *state, u16 max_constellation)
2059 {
2060         u16 i, ana_gain = 0;
2061         const u16 *adp;
2062
2063         /* channel estimation fine configuration */
2064         switch (max_constellation) {
2065         case QAM_64:
2066                         ana_gain = 0x7;
2067                         adp = &adp_Q64[0];
2068                         break;
2069         case QAM_16:
2070                         ana_gain = 0x7;
2071                         adp = &adp_Q16[0];
2072                         break;
2073         default:
2074                         ana_gain = 0;
2075                         adp = &adp_Qdefault[0];
2076                         break;
2077         }
2078
2079         for (i = 0; i < 4; i++)
2080                 dib8000_write_word(state, 215 + i, adp[i]);
2081
2082         return ana_gain;
2083 }
2084
2085 static void dib8000_update_ana_gain(struct dib8000_state *state, u16 ana_gain)
2086 {
2087         u16 i;
2088
2089         dib8000_write_word(state, 116, ana_gain);
2090
2091         /* update ADC target depending on ana_gain */
2092         if (ana_gain) { /* set -16dB ADC target for ana_gain=-1 */
2093                 for (i = 0; i < 10; i++)
2094                         dib8000_write_word(state, 80 + i, adc_target_16dB[i]);
2095         } else { /* set -22dB ADC target for ana_gain=0 */
2096                 for (i = 0; i < 10; i++)
2097                         dib8000_write_word(state, 80 + i, adc_target_16dB[i] - 355);
2098         }
2099 }
2100
2101 static void dib8000_load_ana_fe_coefs(struct dib8000_state *state, const s16 *ana_fe)
2102 {
2103         u16 mode = 0;
2104
2105         if (state->isdbt_cfg_loaded == 0)
2106                 for (mode = 0; mode < 24; mode++)
2107                         dib8000_write_word(state, 117 + mode, ana_fe[mode]);
2108 }
2109
2110 static const u16 lut_prbs_2k[13] = {
2111         0x423, 0x009, 0x5C7,
2112         0x7A6, 0x3D8, 0x527,
2113         0x7FF, 0x79B, 0x3D6,
2114         0x3A2, 0x53B, 0x2F4,
2115         0x213
2116 };
2117
2118 static const u16 lut_prbs_4k[13] = {
2119         0x208, 0x0C3, 0x7B9,
2120         0x423, 0x5C7, 0x3D8,
2121         0x7FF, 0x3D6, 0x53B,
2122         0x213, 0x029, 0x0D0,
2123         0x48E
2124 };
2125
2126 static const u16 lut_prbs_8k[13] = {
2127         0x740, 0x069, 0x7DD,
2128         0x208, 0x7B9, 0x5C7,
2129         0x7FF, 0x53B, 0x029,
2130         0x48E, 0x4C4, 0x367,
2131         0x684
2132 };
2133
2134 static u16 dib8000_get_init_prbs(struct dib8000_state *state, u16 subchannel)
2135 {
2136         int sub_channel_prbs_group = 0;
2137         int prbs_group;
2138
2139         sub_channel_prbs_group = subchannel / 3;
2140         if (sub_channel_prbs_group >= ARRAY_SIZE(lut_prbs_2k))
2141                 return 0;
2142
2143         switch (state->fe[0]->dtv_property_cache.transmission_mode) {
2144         case TRANSMISSION_MODE_2K:
2145                 prbs_group = lut_prbs_2k[sub_channel_prbs_group];
2146                 break;
2147         case TRANSMISSION_MODE_4K:
2148                 prbs_group =  lut_prbs_4k[sub_channel_prbs_group];
2149                 break;
2150         default:
2151         case TRANSMISSION_MODE_8K:
2152                 prbs_group = lut_prbs_8k[sub_channel_prbs_group];
2153         }
2154
2155         dprintk("sub_channel_prbs_group = %d , subchannel =%d prbs = 0x%04x\n",
2156                 sub_channel_prbs_group, subchannel, prbs_group);
2157
2158         return prbs_group;
2159 }
2160
2161 static void dib8000_set_13seg_channel(struct dib8000_state *state)
2162 {
2163         u16 i;
2164         u16 coff_pow = 0x2800;
2165
2166         state->seg_mask = 0x1fff; /* All 13 segments enabled */
2167
2168         /* ---- COFF ---- Carloff, the most robust --- */
2169         if (state->isdbt_cfg_loaded == 0) {  /* if not Sound Broadcasting mode : put default values for 13 segments */
2170                 dib8000_write_word(state, 180, (16 << 6) | 9);
2171                 dib8000_write_word(state, 187, (4 << 12) | (8 << 5) | 0x2);
2172                 coff_pow = 0x2800;
2173                 for (i = 0; i < 6; i++)
2174                         dib8000_write_word(state, 181+i, coff_pow);
2175
2176                 /* P_ctrl_corm_thres4pre_freq_inh=1, P_ctrl_pre_freq_mode_sat=1 */
2177                 /* P_ctrl_pre_freq_mode_sat=1, P_ctrl_pre_freq_inh=0, P_ctrl_pre_freq_step = 3, P_pre_freq_win_len=1 */
2178                 dib8000_write_word(state, 338, (1 << 12) | (1 << 10) | (0 << 9) | (3 << 5) | 1);
2179
2180                 /* P_ctrl_pre_freq_win_len=8, P_ctrl_pre_freq_thres_lockin=6 */
2181                 dib8000_write_word(state, 340, (8 << 6) | (6 << 0));
2182                 /* P_ctrl_pre_freq_thres_lockout=4, P_small_use_tmcc/ac/cp=1 */
2183                 dib8000_write_word(state, 341, (4 << 3) | (1 << 2) | (1 << 1) | (1 << 0));
2184
2185                 dib8000_write_word(state, 228, 0);  /* default value */
2186                 dib8000_write_word(state, 265, 31); /* default value */
2187                 dib8000_write_word(state, 205, 0x200f); /* init value */
2188         }
2189
2190         /*
2191          * make the cpil_coff_lock more robust but slower p_coff_winlen
2192          * 6bits; p_coff_thres_lock 6bits (for coff lock if needed)
2193          */
2194
2195         if (state->cfg.pll->ifreq == 0)
2196                 dib8000_write_word(state, 266, ~state->seg_mask | state->seg_diff_mask | 0x40); /* P_equal_noise_seg_inh */
2197
2198         dib8000_load_ana_fe_coefs(state, ana_fe_coeff_13seg);
2199 }
2200
2201 static void dib8000_set_subchannel_prbs(struct dib8000_state *state, u16 init_prbs)
2202 {
2203         u16 reg_1;
2204
2205         reg_1 = dib8000_read_word(state, 1);
2206         dib8000_write_word(state, 1, (init_prbs << 2) | (reg_1 & 0x3)); /* ADDR 1 */
2207 }
2208
2209 static void dib8000_small_fine_tune(struct dib8000_state *state)
2210 {
2211         u16 i;
2212         const s16 *ncoeff;
2213         struct dtv_frontend_properties *c = &state->fe[0]->dtv_property_cache;
2214
2215         dib8000_write_word(state, 352, state->seg_diff_mask);
2216         dib8000_write_word(state, 353, state->seg_mask);
2217
2218         /* P_small_coef_ext_enable=ISDB-Tsb, P_small_narrow_band=ISDB-Tsb, P_small_last_seg=13, P_small_offset_num_car=5 */
2219         dib8000_write_word(state, 351, (c->isdbt_sb_mode << 9) | (c->isdbt_sb_mode << 8) | (13 << 4) | 5);
2220
2221         if (c->isdbt_sb_mode) {
2222                 /* ---- SMALL ---- */
2223                 switch (c->transmission_mode) {
2224                 case TRANSMISSION_MODE_2K:
2225                                 if (c->isdbt_partial_reception == 0) { /* 1-seg */
2226                                         if (c->layer[0].modulation == DQPSK) /* DQPSK */
2227                                                 ncoeff = coeff_2k_sb_1seg_dqpsk;
2228                                         else /* QPSK or QAM */
2229                                                 ncoeff = coeff_2k_sb_1seg;
2230                                 } else { /* 3-segments */
2231                                         if (c->layer[0].modulation == DQPSK) { /* DQPSK on central segment */
2232                                                 if (c->layer[1].modulation == DQPSK) /* DQPSK on external segments */
2233                                                         ncoeff = coeff_2k_sb_3seg_0dqpsk_1dqpsk;
2234                                                 else /* QPSK or QAM on external segments */
2235                                                         ncoeff = coeff_2k_sb_3seg_0dqpsk;
2236                                         } else { /* QPSK or QAM on central segment */
2237                                                 if (c->layer[1].modulation == DQPSK) /* DQPSK on external segments */
2238                                                         ncoeff = coeff_2k_sb_3seg_1dqpsk;
2239                                                 else /* QPSK or QAM on external segments */
2240                                                         ncoeff = coeff_2k_sb_3seg;
2241                                         }
2242                                 }
2243                                 break;
2244                 case TRANSMISSION_MODE_4K:
2245                                 if (c->isdbt_partial_reception == 0) { /* 1-seg */
2246                                         if (c->layer[0].modulation == DQPSK) /* DQPSK */
2247                                                 ncoeff = coeff_4k_sb_1seg_dqpsk;
2248                                         else /* QPSK or QAM */
2249                                                 ncoeff = coeff_4k_sb_1seg;
2250                                 } else { /* 3-segments */
2251                                         if (c->layer[0].modulation == DQPSK) { /* DQPSK on central segment */
2252                                                 if (c->layer[1].modulation == DQPSK) /* DQPSK on external segments */
2253                                                         ncoeff = coeff_4k_sb_3seg_0dqpsk_1dqpsk;
2254                                                 else /* QPSK or QAM on external segments */
2255                                                         ncoeff = coeff_4k_sb_3seg_0dqpsk;
2256                                         } else { /* QPSK or QAM on central segment */
2257                                                 if (c->layer[1].modulation == DQPSK) /* DQPSK on external segments */
2258                                                         ncoeff = coeff_4k_sb_3seg_1dqpsk;
2259                                                 else /* QPSK or QAM on external segments */
2260                                                         ncoeff = coeff_4k_sb_3seg;
2261                                         }
2262                                 }
2263                                 break;
2264                 case TRANSMISSION_MODE_AUTO:
2265                 case TRANSMISSION_MODE_8K:
2266                 default:
2267                                 if (c->isdbt_partial_reception == 0) { /* 1-seg */
2268                                         if (c->layer[0].modulation == DQPSK) /* DQPSK */
2269                                                 ncoeff = coeff_8k_sb_1seg_dqpsk;
2270                                         else /* QPSK or QAM */
2271                                                 ncoeff = coeff_8k_sb_1seg;
2272                                 } else { /* 3-segments */
2273                                         if (c->layer[0].modulation == DQPSK) { /* DQPSK on central segment */
2274                                                 if (c->layer[1].modulation == DQPSK) /* DQPSK on external segments */
2275                                                         ncoeff = coeff_8k_sb_3seg_0dqpsk_1dqpsk;
2276                                                 else /* QPSK or QAM on external segments */
2277                                                         ncoeff = coeff_8k_sb_3seg_0dqpsk;
2278                                         } else { /* QPSK or QAM on central segment */
2279                                                 if (c->layer[1].modulation == DQPSK) /* DQPSK on external segments */
2280                                                         ncoeff = coeff_8k_sb_3seg_1dqpsk;
2281                                                 else /* QPSK or QAM on external segments */
2282                                                         ncoeff = coeff_8k_sb_3seg;
2283                                         }
2284                                 }
2285                                 break;
2286                 }
2287
2288                 for (i = 0; i < 8; i++)
2289                         dib8000_write_word(state, 343 + i, ncoeff[i]);
2290         }
2291 }
2292
2293 static const u16 coff_thres_1seg[3] = {300, 150, 80};
2294 static const u16 coff_thres_3seg[3] = {350, 300, 250};
2295 static void dib8000_set_sb_channel(struct dib8000_state *state)
2296 {
2297         struct dtv_frontend_properties *c = &state->fe[0]->dtv_property_cache;
2298         const u16 *coff;
2299         u16 i;
2300
2301         if (c->transmission_mode == TRANSMISSION_MODE_2K || c->transmission_mode == TRANSMISSION_MODE_4K) {
2302                 dib8000_write_word(state, 219, dib8000_read_word(state, 219) | 0x1); /* adp_pass =1 */
2303                 dib8000_write_word(state, 190, dib8000_read_word(state, 190) | (0x1 << 14)); /* pha3_force_pha_shift = 1 */
2304         } else {
2305                 dib8000_write_word(state, 219, dib8000_read_word(state, 219) & 0xfffe); /* adp_pass =0 */
2306                 dib8000_write_word(state, 190, dib8000_read_word(state, 190) & 0xbfff); /* pha3_force_pha_shift = 0 */
2307         }
2308
2309         if (c->isdbt_partial_reception == 1) /* 3-segments */
2310                 state->seg_mask = 0x00E0;
2311         else /* 1-segment */
2312                 state->seg_mask = 0x0040;
2313
2314         dib8000_write_word(state, 268, (dib8000_read_word(state, 268) & 0xF9FF) | 0x0200);
2315
2316         /* ---- COFF ---- Carloff, the most robust --- */
2317         /* P_coff_cpil_alpha=4, P_coff_inh=0, P_coff_cpil_winlen=64, P_coff_narrow_band=1, P_coff_square_val=1, P_coff_one_seg=~partial_rcpt, P_coff_use_tmcc=1, P_coff_use_ac=1 */
2318         dib8000_write_word(state, 187, (4 << 12) | (0 << 11) | (63 << 5) | (0x3 << 3) | ((~c->isdbt_partial_reception & 1) << 2) | 0x3);
2319
2320         dib8000_write_word(state, 340, (16 << 6) | (8 << 0)); /* P_ctrl_pre_freq_win_len=16, P_ctrl_pre_freq_thres_lockin=8 */
2321         dib8000_write_word(state, 341, (6 << 3) | (1 << 2) | (1 << 1) | (1 << 0));/* P_ctrl_pre_freq_thres_lockout=6, P_small_use_tmcc/ac/cp=1 */
2322
2323         /* Sound Broadcasting mode 1 seg */
2324         if (c->isdbt_partial_reception == 0) {
2325                 /* P_coff_winlen=63, P_coff_thres_lock=15, P_coff_one_seg_width = (P_mode == 3) , P_coff_one_seg_sym = (P_mode-1) */
2326                 if (state->mode == 3)
2327                         dib8000_write_word(state, 180, 0x1fcf | ((state->mode - 1) << 14));
2328                 else
2329                         dib8000_write_word(state, 180, 0x0fcf | ((state->mode - 1) << 14));
2330
2331                 /* P_ctrl_corm_thres4pre_freq_inh=1,P_ctrl_pre_freq_mode_sat=1, P_ctrl_pre_freq_inh=0, P_ctrl_pre_freq_step = 5, P_pre_freq_win_len=4 */
2332                 dib8000_write_word(state, 338, (1 << 12) | (1 << 10) | (0 << 9) | (5 << 5) | 4);
2333                 coff = &coff_thres_1seg[0];
2334         } else {   /* Sound Broadcasting mode 3 seg */
2335                 dib8000_write_word(state, 180, 0x1fcf | (1 << 14));
2336                 /* P_ctrl_corm_thres4pre_freq_inh = 1, P_ctrl_pre_freq_mode_sat=1, P_ctrl_pre_freq_inh=0, P_ctrl_pre_freq_step = 4, P_pre_freq_win_len=4 */
2337                 dib8000_write_word(state, 338, (1 << 12) | (1 << 10) | (0 << 9) | (4 << 5) | 4);
2338                 coff = &coff_thres_3seg[0];
2339         }
2340
2341         dib8000_write_word(state, 228, 1); /* P_2d_mode_byp=1 */
2342         dib8000_write_word(state, 205, dib8000_read_word(state, 205) & 0xfff0); /* P_cspu_win_cut = 0 */
2343
2344         if (c->isdbt_partial_reception == 0 && c->transmission_mode == TRANSMISSION_MODE_2K)
2345                 dib8000_write_word(state, 265, 15); /* P_equal_noise_sel = 15 */
2346
2347         /* Write COFF thres */
2348         for (i = 0 ; i < 3; i++) {
2349                 dib8000_write_word(state, 181+i, coff[i]);
2350                 dib8000_write_word(state, 184+i, coff[i]);
2351         }
2352
2353         /*
2354          * make the cpil_coff_lock more robust but slower p_coff_winlen
2355          * 6bits; p_coff_thres_lock 6bits (for coff lock if needed)
2356          */
2357
2358         dib8000_write_word(state, 266, ~state->seg_mask | state->seg_diff_mask); /* P_equal_noise_seg_inh */
2359
2360         if (c->isdbt_partial_reception == 0)
2361                 dib8000_write_word(state, 178, 64); /* P_fft_powrange = 64 */
2362         else
2363                 dib8000_write_word(state, 178, 32); /* P_fft_powrange = 32 */
2364 }
2365
2366 static void dib8000_set_isdbt_common_channel(struct dib8000_state *state, u8 seq, u8 autosearching)
2367 {
2368         u16 p_cfr_left_edge  = 0, p_cfr_right_edge = 0;
2369         u16 tmcc_pow = 0, ana_gain = 0, tmp = 0, i = 0, nbseg_diff = 0 ;
2370         u16 max_constellation = DQPSK;
2371         int init_prbs;
2372         struct dtv_frontend_properties *c = &state->fe[0]->dtv_property_cache;
2373
2374         if (autosearching)
2375                 c->isdbt_partial_reception = 1;
2376
2377         /* P_mode */
2378         dib8000_write_word(state, 10, (seq << 4));
2379
2380         /* init mode */
2381         state->mode = fft_to_mode(state);
2382
2383         /* set guard */
2384         tmp = dib8000_read_word(state, 1);
2385         dib8000_write_word(state, 1, (tmp&0xfffc) | (c->guard_interval & 0x3));
2386
2387         dib8000_write_word(state, 274, (dib8000_read_word(state, 274) & 0xffcf) | ((c->isdbt_partial_reception & 1) << 5) | ((c->isdbt_sb_mode & 1) << 4));
2388
2389         /* signal optimization parameter */
2390         if (c->isdbt_partial_reception) {
2391                 state->seg_diff_mask = (c->layer[0].modulation == DQPSK) << permu_seg[0];
2392                 for (i = 1; i < 3; i++)
2393                         nbseg_diff += (c->layer[i].modulation == DQPSK) * c->layer[i].segment_count;
2394                 for (i = 0; i < nbseg_diff; i++)
2395                         state->seg_diff_mask |= 1 << permu_seg[i+1];
2396         } else {
2397                 for (i = 0; i < 3; i++)
2398                         nbseg_diff += (c->layer[i].modulation == DQPSK) * c->layer[i].segment_count;
2399                 for (i = 0; i < nbseg_diff; i++)
2400                         state->seg_diff_mask |= 1 << permu_seg[i];
2401         }
2402
2403         if (state->seg_diff_mask)
2404                 dib8000_write_word(state, 268, (dib8000_read_word(state, 268) & 0xF9FF) | 0x0200);
2405         else
2406                 dib8000_write_word(state, 268, (2 << 9) | 39); /*init value */
2407
2408         for (i = 0; i < 3; i++)
2409                 max_constellation = dib8000_set_layer(state, i, max_constellation);
2410         if (autosearching == 0) {
2411                 state->layer_b_nb_seg = c->layer[1].segment_count;
2412                 state->layer_c_nb_seg = c->layer[2].segment_count;
2413         }
2414
2415         /* WRITE: Mode & Diff mask */
2416         dib8000_write_word(state, 0, (state->mode << 13) | state->seg_diff_mask);
2417
2418         state->differential_constellation = (state->seg_diff_mask != 0);
2419
2420         /* channel estimation fine configuration */
2421         ana_gain = dib8000_adp_fine_tune(state, max_constellation);
2422
2423         /* update ana_gain depending on max constellation */
2424         dib8000_update_ana_gain(state, ana_gain);
2425
2426         /* ---- ANA_FE ---- */
2427         if (c->isdbt_partial_reception) /* 3-segments */
2428                 dib8000_load_ana_fe_coefs(state, ana_fe_coeff_3seg);
2429         else
2430                 dib8000_load_ana_fe_coefs(state, ana_fe_coeff_1seg); /* 1-segment */
2431
2432         /* TSB or ISDBT ? apply it now */
2433         if (c->isdbt_sb_mode) {
2434                 dib8000_set_sb_channel(state);
2435                 init_prbs = dib8000_get_init_prbs(state,
2436                                                   c->isdbt_sb_subchannel);
2437         } else {
2438                 dib8000_set_13seg_channel(state);
2439                 init_prbs = 0xfff;
2440         }
2441
2442         /* SMALL */
2443         dib8000_small_fine_tune(state);
2444
2445         dib8000_set_subchannel_prbs(state, init_prbs);
2446
2447         /* ---- CHAN_BLK ---- */
2448         for (i = 0; i < 13; i++) {
2449                 if ((((~state->seg_diff_mask) >> i) & 1) == 1) {
2450                         p_cfr_left_edge  += (1 << i) * ((i == 0) || ((((state->seg_mask & (~state->seg_diff_mask)) >> (i - 1)) & 1) == 0));
2451                         p_cfr_right_edge += (1 << i) * ((i == 12) || ((((state->seg_mask & (~state->seg_diff_mask)) >> (i + 1)) & 1) == 0));
2452                 }
2453         }
2454         dib8000_write_word(state, 222, p_cfr_left_edge); /* p_cfr_left_edge */
2455         dib8000_write_word(state, 223, p_cfr_right_edge); /* p_cfr_right_edge */
2456         /* "P_cspu_left_edge" & "P_cspu_right_edge" not used => do not care */
2457
2458         dib8000_write_word(state, 189, ~state->seg_mask | state->seg_diff_mask); /* P_lmod4_seg_inh */
2459         dib8000_write_word(state, 192, ~state->seg_mask | state->seg_diff_mask); /* P_pha3_seg_inh */
2460         dib8000_write_word(state, 225, ~state->seg_mask | state->seg_diff_mask); /* P_tac_seg_inh */
2461
2462         if (!autosearching)
2463                 dib8000_write_word(state, 288, (~state->seg_mask | state->seg_diff_mask) & 0x1fff); /* P_tmcc_seg_eq_inh */
2464         else
2465                 dib8000_write_word(state, 288, 0x1fff); /*disable equalisation of the tmcc when autosearch to be able to find the DQPSK channels. */
2466
2467         dib8000_write_word(state, 211, state->seg_mask & (~state->seg_diff_mask)); /* P_des_seg_enabled */
2468         dib8000_write_word(state, 287, ~state->seg_mask | 0x1000); /* P_tmcc_seg_inh */
2469
2470         dib8000_write_word(state, 178, 32); /* P_fft_powrange = 32 */
2471
2472         /* ---- TMCC ---- */
2473         for (i = 0; i < 3; i++)
2474                 tmcc_pow += (((c->layer[i].modulation == DQPSK) * 4 + 1) * c->layer[i].segment_count) ;
2475
2476         /* Quantif of "P_tmcc_dec_thres_?k" is (0, 5+mode, 9); */
2477         /* Threshold is set at 1/4 of max power. */
2478         tmcc_pow *= (1 << (9-2));
2479         dib8000_write_word(state, 290, tmcc_pow); /* P_tmcc_dec_thres_2k */
2480         dib8000_write_word(state, 291, tmcc_pow); /* P_tmcc_dec_thres_4k */
2481         dib8000_write_word(state, 292, tmcc_pow); /* P_tmcc_dec_thres_8k */
2482         /*dib8000_write_word(state, 287, (1 << 13) | 0x1000 ); */
2483
2484         /* ---- PHA3 ---- */
2485         if (state->isdbt_cfg_loaded == 0)
2486                 dib8000_write_word(state, 250, 3285); /* p_2d_hspeed_thr0 */
2487
2488         state->isdbt_cfg_loaded = 0;
2489 }
2490
2491 static u32 dib8000_wait_lock(struct dib8000_state *state, u32 internal,
2492                              u32 wait0_ms, u32 wait1_ms, u32 wait2_ms)
2493 {
2494         u32 value = 0;  /* P_search_end0 wait time */
2495         u16 reg = 11;   /* P_search_end0 start addr */
2496
2497         for (reg = 11; reg < 16; reg += 2) {
2498                 if (reg == 11) {
2499                         if (state->revision == 0x8090)
2500                                 value = internal * wait1_ms;
2501                         else
2502                                 value = internal * wait0_ms;
2503                 } else if (reg == 13)
2504                         value = internal * wait1_ms;
2505                 else if (reg == 15)
2506                         value = internal * wait2_ms;
2507                 dib8000_write_word(state, reg, (u16)((value >> 16) & 0xffff));
2508                 dib8000_write_word(state, (reg + 1), (u16)(value & 0xffff));
2509         }
2510         return value;
2511 }
2512
2513 static int dib8000_autosearch_start(struct dvb_frontend *fe)
2514 {
2515         struct dib8000_state *state = fe->demodulator_priv;
2516         struct dtv_frontend_properties *c = &state->fe[0]->dtv_property_cache;
2517         u8 slist = 0;
2518         u32 value, internal = state->cfg.pll->internal;
2519
2520         if (state->revision == 0x8090)
2521                 internal = dib8000_read32(state, 23) / 1000;
2522
2523         if ((state->revision >= 0x8002) &&
2524             (state->autosearch_state == AS_SEARCHING_FFT)) {
2525                 dib8000_write_word(state,  37, 0x0065); /* P_ctrl_pha_off_max default values */
2526                 dib8000_write_word(state, 116, 0x0000); /* P_ana_gain to 0 */
2527
2528                 dib8000_write_word(state, 0, (dib8000_read_word(state, 0) & 0x1fff) | (0 << 13) | (1 << 15)); /* P_mode = 0, P_restart_search=1 */
2529                 dib8000_write_word(state, 1, (dib8000_read_word(state, 1) & 0xfffc) | 0); /* P_guard = 0 */
2530                 dib8000_write_word(state, 6, 0); /* P_lock0_mask = 0 */
2531                 dib8000_write_word(state, 7, 0); /* P_lock1_mask = 0 */
2532                 dib8000_write_word(state, 8, 0); /* P_lock2_mask = 0 */
2533                 dib8000_write_word(state, 10, (dib8000_read_word(state, 10) & 0x200) | (16 << 4) | (0 << 0)); /* P_search_list=16, P_search_maxtrial=0 */
2534
2535                 if (state->revision == 0x8090)
2536                         value = dib8000_wait_lock(state, internal, 10, 10, 10); /* time in ms configure P_search_end0 P_search_end1 P_search_end2 */
2537                 else
2538                         value = dib8000_wait_lock(state, internal, 20, 20, 20); /* time in ms configure P_search_end0 P_search_end1 P_search_end2 */
2539
2540                 dib8000_write_word(state, 17, 0);
2541                 dib8000_write_word(state, 18, 200); /* P_search_rstst = 200 */
2542                 dib8000_write_word(state, 19, 0);
2543                 dib8000_write_word(state, 20, 400); /* P_search_rstend = 400 */
2544                 dib8000_write_word(state, 21, (value >> 16) & 0xffff); /* P_search_checkst */
2545                 dib8000_write_word(state, 22, value & 0xffff);
2546
2547                 if (state->revision == 0x8090)
2548                         dib8000_write_word(state, 32, (dib8000_read_word(state, 32) & 0xf0ff) | (0 << 8)); /* P_corm_alpha = 0 */
2549                 else
2550                         dib8000_write_word(state, 32, (dib8000_read_word(state, 32) & 0xf0ff) | (9 << 8)); /* P_corm_alpha = 3 */
2551                 dib8000_write_word(state, 355, 2); /* P_search_param_max = 2 */
2552
2553                 /* P_search_param_select = (1 | 1<<4 | 1 << 8) */
2554                 dib8000_write_word(state, 356, 0);
2555                 dib8000_write_word(state, 357, 0x111);
2556
2557                 dib8000_write_word(state, 770, (dib8000_read_word(state, 770) & 0xdfff) | (1 << 13)); /* P_restart_ccg = 1 */
2558                 dib8000_write_word(state, 770, (dib8000_read_word(state, 770) & 0xdfff) | (0 << 13)); /* P_restart_ccg = 0 */
2559                 dib8000_write_word(state, 0, (dib8000_read_word(state, 0) & 0x7ff) | (0 << 15) | (1 << 13)); /* P_restart_search = 0; */
2560         } else if ((state->revision >= 0x8002) &&
2561                    (state->autosearch_state == AS_SEARCHING_GUARD)) {
2562                 c->transmission_mode = TRANSMISSION_MODE_8K;
2563                 c->guard_interval = GUARD_INTERVAL_1_8;
2564                 c->inversion = 0;
2565                 c->layer[0].modulation = QAM_64;
2566                 c->layer[0].fec = FEC_2_3;
2567                 c->layer[0].interleaving = 0;
2568                 c->layer[0].segment_count = 13;
2569
2570                 slist = 16;
2571                 c->transmission_mode = state->found_nfft;
2572
2573                 dib8000_set_isdbt_common_channel(state, slist, 1);
2574
2575                 /* set lock_mask values */
2576                 dib8000_write_word(state, 6, 0x4);
2577                 if (state->revision == 0x8090)
2578                         dib8000_write_word(state, 7, ((1 << 12) | (1 << 11) | (1 << 10)));/* tmcc_dec_lock, tmcc_sync_lock, tmcc_data_lock, tmcc_bch_uncor */
2579                 else
2580                         dib8000_write_word(state, 7, 0x8);
2581                 dib8000_write_word(state, 8, 0x1000);
2582
2583                 /* set lock_mask wait time values */
2584                 if (state->revision == 0x8090)
2585                         dib8000_wait_lock(state, internal, 50, 100, 1000); /* time in ms configure P_search_end0 P_search_end1 P_search_end2 */
2586                 else
2587                         dib8000_wait_lock(state, internal, 50, 200, 1000); /* time in ms configure P_search_end0 P_search_end1 P_search_end2 */
2588
2589                 dib8000_write_word(state, 355, 3); /* P_search_param_max = 3 */
2590
2591                 /* P_search_param_select = 0xf; look for the 4 different guard intervals */
2592                 dib8000_write_word(state, 356, 0);
2593                 dib8000_write_word(state, 357, 0xf);
2594
2595                 value = dib8000_read_word(state, 0);
2596                 dib8000_write_word(state, 0, (u16)((1 << 15) | value));
2597                 dib8000_read_word(state, 1284);  /* reset the INT. n_irq_pending */
2598                 dib8000_write_word(state, 0, (u16)value);
2599         } else {
2600                 c->inversion = 0;
2601                 c->layer[0].modulation = QAM_64;
2602                 c->layer[0].fec = FEC_2_3;
2603                 c->layer[0].interleaving = 0;
2604                 c->layer[0].segment_count = 13;
2605                 if (!c->isdbt_sb_mode)
2606                         c->layer[0].segment_count = 13;
2607
2608                 /* choose the right list, in sb, always do everything */
2609                 if (c->isdbt_sb_mode) {
2610                         slist = 7;
2611                         dib8000_write_word(state, 0, (dib8000_read_word(state, 0) & 0x9fff) | (1 << 13));
2612                 } else {
2613                         if (c->guard_interval == GUARD_INTERVAL_AUTO) {
2614                                 if (c->transmission_mode == TRANSMISSION_MODE_AUTO) {
2615                                         c->transmission_mode = TRANSMISSION_MODE_8K;
2616                                         c->guard_interval = GUARD_INTERVAL_1_8;
2617                                         slist = 7;
2618                                         dib8000_write_word(state, 0, (dib8000_read_word(state, 0) & 0x9fff) | (1 << 13));  /* P_mode = 1 to have autosearch start ok with mode2 */
2619                                 } else {
2620                                         c->guard_interval = GUARD_INTERVAL_1_8;
2621                                         slist = 3;
2622                                 }
2623                         } else {
2624                                 if (c->transmission_mode == TRANSMISSION_MODE_AUTO) {
2625                                         c->transmission_mode = TRANSMISSION_MODE_8K;
2626                                         slist = 2;
2627                                         dib8000_write_word(state, 0, (dib8000_read_word(state, 0) & 0x9fff) | (1 << 13));  /* P_mode = 1 */
2628                                 } else
2629                                         slist = 0;
2630                         }
2631                 }
2632                 dprintk("Using list for autosearch : %d\n", slist);
2633
2634                 dib8000_set_isdbt_common_channel(state, slist, 1);
2635
2636                 /* set lock_mask values */
2637                 dib8000_write_word(state, 6, 0x4);
2638                 if (state->revision == 0x8090)
2639                         dib8000_write_word(state, 7, (1 << 12) | (1 << 11) | (1 << 10));
2640                 else
2641                         dib8000_write_word(state, 7, 0x8);
2642                 dib8000_write_word(state, 8, 0x1000);
2643
2644                 /* set lock_mask wait time values */
2645                 if (state->revision == 0x8090)
2646                         dib8000_wait_lock(state, internal, 50, 200, 1000); /* time in ms configure P_search_end0 P_search_end1 P_search_end2 */
2647                 else
2648                         dib8000_wait_lock(state, internal, 50, 100, 1000); /* time in ms configure P_search_end0 P_search_end1 P_search_end2 */
2649
2650                 value = dib8000_read_word(state, 0);
2651                 dib8000_write_word(state, 0, (u16)((1 << 15) | value));
2652                 dib8000_read_word(state, 1284);  /* reset the INT. n_irq_pending */
2653                 dib8000_write_word(state, 0, (u16)value);
2654         }
2655         return 0;
2656 }
2657
2658 static int dib8000_autosearch_irq(struct dvb_frontend *fe)
2659 {
2660         struct dib8000_state *state = fe->demodulator_priv;
2661         u16 irq_pending = dib8000_read_word(state, 1284);
2662
2663         if ((state->revision >= 0x8002) &&
2664             (state->autosearch_state == AS_SEARCHING_FFT)) {
2665                 if (irq_pending & 0x1) {
2666                         dprintk("dib8000_autosearch_irq: max correlation result available\n");
2667                         return 3;
2668                 }
2669         } else {
2670                 if (irq_pending & 0x1) {        /* failed */
2671                         dprintk("dib8000_autosearch_irq failed\n");
2672                         return 1;
2673                 }
2674
2675                 if (irq_pending & 0x2) {        /* succeeded */
2676                         dprintk("dib8000_autosearch_irq succeeded\n");
2677                         return 2;
2678                 }
2679         }
2680
2681         return 0;               // still pending
2682 }
2683
2684 static void dib8000_viterbi_state(struct dib8000_state *state, u8 onoff)
2685 {
2686         u16 tmp;
2687
2688         tmp = dib8000_read_word(state, 771);
2689         if (onoff) /* start P_restart_chd : channel_decoder */
2690                 dib8000_write_word(state, 771, tmp & 0xfffd);
2691         else /* stop P_restart_chd : channel_decoder */
2692                 dib8000_write_word(state, 771, tmp | (1<<1));
2693 }
2694
2695 static void dib8000_set_dds(struct dib8000_state *state, s32 offset_khz)
2696 {
2697         s16 unit_khz_dds_val;
2698         u32 abs_offset_khz = abs(offset_khz);
2699         u32 dds = state->cfg.pll->ifreq & 0x1ffffff;
2700         u8 invert = !!(state->cfg.pll->ifreq & (1 << 25));
2701         u8 ratio;
2702
2703         if (state->revision == 0x8090) {
2704                 ratio = 4;
2705                 unit_khz_dds_val = (1<<26) / (dib8000_read32(state, 23) / 1000);
2706                 if (offset_khz < 0)
2707                         dds = (1 << 26) - (abs_offset_khz * unit_khz_dds_val);
2708                 else
2709                         dds = (abs_offset_khz * unit_khz_dds_val);
2710
2711                 if (invert)
2712                         dds = (1<<26) - dds;
2713         } else {
2714                 ratio = 2;
2715                 unit_khz_dds_val = (u16) (67108864 / state->cfg.pll->internal);
2716
2717                 if (offset_khz < 0)
2718                         unit_khz_dds_val *= -1;
2719
2720                 /* IF tuner */
2721                 if (invert)
2722                         dds -= abs_offset_khz * unit_khz_dds_val;
2723                 else
2724                         dds += abs_offset_khz * unit_khz_dds_val;
2725         }
2726
2727         dprintk("setting a DDS frequency offset of %c%dkHz\n", invert ? '-' : ' ', dds / unit_khz_dds_val);
2728
2729         if (abs_offset_khz <= (state->cfg.pll->internal / ratio)) {
2730                 /* Max dds offset is the half of the demod freq */
2731                 dib8000_write_word(state, 26, invert);
2732                 dib8000_write_word(state, 27, (u16)(dds >> 16) & 0x1ff);
2733                 dib8000_write_word(state, 28, (u16)(dds & 0xffff));
2734         }
2735 }
2736
2737 static void dib8000_set_frequency_offset(struct dib8000_state *state)
2738 {
2739         struct dtv_frontend_properties *c = &state->fe[0]->dtv_property_cache;
2740         int i;
2741         u32 current_rf;
2742         int total_dds_offset_khz;
2743
2744         if (state->fe[0]->ops.tuner_ops.get_frequency)
2745                 state->fe[0]->ops.tuner_ops.get_frequency(state->fe[0], &current_rf);
2746         else
2747                 current_rf = c->frequency;
2748         current_rf /= 1000;
2749         total_dds_offset_khz = (int)current_rf - (int)c->frequency / 1000;
2750
2751         if (c->isdbt_sb_mode) {
2752                 state->subchannel = c->isdbt_sb_subchannel;
2753
2754                 i = dib8000_read_word(state, 26) & 1; /* P_dds_invspec */
2755                 dib8000_write_word(state, 26, c->inversion ^ i);
2756
2757                 if (state->cfg.pll->ifreq == 0) { /* low if tuner */
2758                         if ((c->inversion ^ i) == 0)
2759                                 dib8000_write_word(state, 26, dib8000_read_word(state, 26) | 1);
2760                 } else {
2761                         if ((c->inversion ^ i) == 0)
2762                                 total_dds_offset_khz *= -1;
2763                 }
2764         }
2765
2766         dprintk("%dkhz tuner offset (frequency = %dHz & current_rf = %dHz) total_dds_offset_hz = %d\n", c->frequency - current_rf, c->frequency, current_rf, total_dds_offset_khz);
2767
2768         /* apply dds offset now */
2769         dib8000_set_dds(state, total_dds_offset_khz);
2770 }
2771
2772 static u16 LUT_isdbt_symbol_duration[4] = { 26, 101, 63 };
2773
2774 static u32 dib8000_get_symbol_duration(struct dib8000_state *state)
2775 {
2776         struct dtv_frontend_properties *c = &state->fe[0]->dtv_property_cache;
2777         u16 i;
2778
2779         switch (c->transmission_mode) {
2780         case TRANSMISSION_MODE_2K:
2781                         i = 0;
2782                         break;
2783         case TRANSMISSION_MODE_4K:
2784                         i = 2;
2785                         break;
2786         default:
2787         case TRANSMISSION_MODE_AUTO:
2788         case TRANSMISSION_MODE_8K:
2789                         i = 1;
2790                         break;
2791         }
2792
2793         return (LUT_isdbt_symbol_duration[i] / (c->bandwidth_hz / 1000)) + 1;
2794 }
2795
2796 static void dib8000_set_isdbt_loop_params(struct dib8000_state *state, enum param_loop_step loop_step)
2797 {
2798         struct dtv_frontend_properties *c = &state->fe[0]->dtv_property_cache;
2799         u16 reg_32 = 0, reg_37 = 0;
2800
2801         switch (loop_step) {
2802         case LOOP_TUNE_1:
2803                         if (c->isdbt_sb_mode)  {
2804                                 if (c->isdbt_partial_reception == 0) {
2805                                         reg_32 = ((11 - state->mode) << 12) | (6 << 8) | 0x40; /* P_timf_alpha = (11-P_mode), P_corm_alpha=6, P_corm_thres=0x40 */
2806                                         reg_37 = (3 << 5) | (0 << 4) | (10 - state->mode); /* P_ctrl_pha_off_max=3   P_ctrl_sfreq_inh =0  P_ctrl_sfreq_step = (10-P_mode)  */
2807                                 } else { /* Sound Broadcasting mode 3 seg */
2808                                         reg_32 = ((10 - state->mode) << 12) | (6 << 8) | 0x60; /* P_timf_alpha = (10-P_mode), P_corm_alpha=6, P_corm_thres=0x60 */
2809                                         reg_37 = (3 << 5) | (0 << 4) | (9 - state->mode); /* P_ctrl_pha_off_max=3   P_ctrl_sfreq_inh =0  P_ctrl_sfreq_step = (9-P_mode)  */
2810                                 }
2811                         } else { /* 13-seg start conf offset loop parameters */
2812                                 reg_32 = ((9 - state->mode) << 12) | (6 << 8) | 0x80; /* P_timf_alpha = (9-P_mode, P_corm_alpha=6, P_corm_thres=0x80 */
2813                                 reg_37 = (3 << 5) | (0 << 4) | (8 - state->mode); /* P_ctrl_pha_off_max=3   P_ctrl_sfreq_inh =0  P_ctrl_sfreq_step = 9  */
2814                         }
2815                         break;
2816         case LOOP_TUNE_2:
2817                         if (c->isdbt_sb_mode)  {
2818                                 if (c->isdbt_partial_reception == 0) {  /* Sound Broadcasting mode 1 seg */
2819                                         reg_32 = ((13-state->mode) << 12) | (6 << 8) | 0x40; /* P_timf_alpha = (13-P_mode) , P_corm_alpha=6, P_corm_thres=0x40*/
2820                                         reg_37 = (12-state->mode) | ((5 + state->mode) << 5);
2821                                 } else {  /* Sound Broadcasting mode 3 seg */
2822                                         reg_32 = ((12-state->mode) << 12) | (6 << 8) | 0x60; /* P_timf_alpha = (12-P_mode) , P_corm_alpha=6, P_corm_thres=0x60 */
2823                                         reg_37 = (11-state->mode) | ((5 + state->mode) << 5);
2824                                 }
2825                         } else {  /* 13 seg */
2826                                 reg_32 = ((11-state->mode) << 12) | (6 << 8) | 0x80; /* P_timf_alpha = 8 , P_corm_alpha=6, P_corm_thres=0x80 */
2827                                 reg_37 = ((5+state->mode) << 5) | (10 - state->mode);
2828                         }
2829                         break;
2830         }
2831         dib8000_write_word(state, 32, reg_32);
2832         dib8000_write_word(state, 37, reg_37);
2833 }
2834
2835 static void dib8000_demod_restart(struct dib8000_state *state)
2836 {
2837         dib8000_write_word(state, 770, 0x4000);
2838         dib8000_write_word(state, 770, 0x0000);
2839         return;
2840 }
2841
2842 static void dib8000_set_sync_wait(struct dib8000_state *state)
2843 {
2844         struct dtv_frontend_properties *c = &state->fe[0]->dtv_property_cache;
2845         u16 sync_wait = 64;
2846
2847         /* P_dvsy_sync_wait - reuse mode */
2848         switch (c->transmission_mode) {
2849         case TRANSMISSION_MODE_8K:
2850                         sync_wait = 256;
2851                         break;
2852         case TRANSMISSION_MODE_4K:
2853                         sync_wait = 128;
2854                         break;
2855         default:
2856         case TRANSMISSION_MODE_2K:
2857                         sync_wait =  64;
2858                         break;
2859         }
2860
2861         if (state->cfg.diversity_delay == 0)
2862                 sync_wait = (sync_wait * (1 << (c->guard_interval)) * 3) / 2 + 48; /* add 50% SFN margin + compensate for one DVSY-fifo */
2863         else
2864                 sync_wait = (sync_wait * (1 << (c->guard_interval)) * 3) / 2 + state->cfg.diversity_delay; /* add 50% SFN margin + compensate for DVSY-fifo */
2865
2866         dib8000_write_word(state, 273, (dib8000_read_word(state, 273) & 0x000f) | (sync_wait << 4));
2867 }
2868
2869 static unsigned long dib8000_get_timeout(struct dib8000_state *state, u32 delay, enum timeout_mode mode)
2870 {
2871         if (mode == SYMBOL_DEPENDENT_ON)
2872                 delay *= state->symbol_duration;
2873
2874         return jiffies + usecs_to_jiffies(delay * 100);
2875 }
2876
2877 static s32 dib8000_get_status(struct dvb_frontend *fe)
2878 {
2879         struct dib8000_state *state = fe->demodulator_priv;
2880         return state->status;
2881 }
2882
2883 static enum frontend_tune_state dib8000_get_tune_state(struct dvb_frontend *fe)
2884 {
2885         struct dib8000_state *state = fe->demodulator_priv;
2886         return state->tune_state;
2887 }
2888
2889 static int dib8000_set_tune_state(struct dvb_frontend *fe, enum frontend_tune_state tune_state)
2890 {
2891         struct dib8000_state *state = fe->demodulator_priv;
2892
2893         state->tune_state = tune_state;
2894         return 0;
2895 }
2896
2897 static int dib8000_tune_restart_from_demod(struct dvb_frontend *fe)
2898 {
2899         struct dib8000_state *state = fe->demodulator_priv;
2900
2901         state->status = FE_STATUS_TUNE_PENDING;
2902         state->tune_state = CT_DEMOD_START;
2903         return 0;
2904 }
2905
2906 static u16 dib8000_read_lock(struct dvb_frontend *fe)
2907 {
2908         struct dib8000_state *state = fe->demodulator_priv;
2909
2910         if (state->revision == 0x8090)
2911                 return dib8000_read_word(state, 570);
2912         return dib8000_read_word(state, 568);
2913 }
2914
2915 static int dib8090p_init_sdram(struct dib8000_state *state)
2916 {
2917         u16 reg = 0;
2918         dprintk("init sdram\n");
2919
2920         reg = dib8000_read_word(state, 274) & 0xfff0;
2921         dib8000_write_word(state, 274, reg | 0x7); /* P_dintlv_delay_ram = 7 because of MobileSdram */
2922
2923         dib8000_write_word(state, 1803, (7 << 2));
2924
2925         reg = dib8000_read_word(state, 1280);
2926         dib8000_write_word(state, 1280,  reg | (1 << 2)); /* force restart P_restart_sdram */
2927         dib8000_write_word(state, 1280,  reg); /* release restart P_restart_sdram */
2928
2929         return 0;
2930 }
2931
2932 /**
2933  * is_manual_mode - Check if TMCC should be used for parameters settings
2934  * @c:  struct dvb_frontend_properties
2935  *
2936  * By default, TMCC table should be used for parameter settings on most
2937  * usercases. However, sometimes it is desirable to lock the demod to
2938  * use the manual parameters.
2939  *
2940  * On manual mode, the current dib8000_tune state machine is very restrict:
2941  * It requires that both per-layer and per-transponder parameters to be
2942  * properly specified, otherwise the device won't lock.
2943  *
2944  * Check if all those conditions are properly satisfied before allowing
2945  * the device to use the manual frequency lock mode.
2946  */
2947 static int is_manual_mode(struct dtv_frontend_properties *c)
2948 {
2949         int i, n_segs = 0;
2950
2951         /* Use auto mode on DVB-T compat mode */
2952         if (c->delivery_system != SYS_ISDBT)
2953                 return 0;
2954
2955         /*
2956          * Transmission mode is only detected on auto mode, currently
2957          */
2958         if (c->transmission_mode == TRANSMISSION_MODE_AUTO) {
2959                 dprintk("transmission mode auto\n");
2960                 return 0;
2961         }
2962
2963         /*
2964          * Guard interval is only detected on auto mode, currently
2965          */
2966         if (c->guard_interval == GUARD_INTERVAL_AUTO) {
2967                 dprintk("guard interval auto\n");
2968                 return 0;
2969         }
2970
2971         /*
2972          * If no layer is enabled, assume auto mode, as at least one
2973          * layer should be enabled
2974          */
2975         if (!c->isdbt_layer_enabled) {
2976                 dprintk("no layer modulation specified\n");
2977                 return 0;
2978         }
2979
2980         /*
2981          * Check if the per-layer parameters aren't auto and
2982          * disable a layer if segment count is 0 or invalid.
2983          */
2984         for (i = 0; i < 3; i++) {
2985                 if (!(c->isdbt_layer_enabled & 1 << i))
2986                         continue;
2987
2988                 if ((c->layer[i].segment_count > 13) ||
2989                     (c->layer[i].segment_count == 0)) {
2990                         c->isdbt_layer_enabled &= ~(1 << i);
2991                         continue;
2992                 }
2993
2994                 n_segs += c->layer[i].segment_count;
2995
2996                 if ((c->layer[i].modulation == QAM_AUTO) ||
2997                     (c->layer[i].fec == FEC_AUTO)) {
2998                         dprintk("layer %c has either modulation or FEC auto\n",
2999                                 'A' + i);
3000                         return 0;
3001                 }
3002         }
3003
3004         /*
3005          * Userspace specified a wrong number of segments.
3006          *      fallback to auto mode.
3007          */
3008         if (n_segs == 0 || n_segs > 13) {
3009                 dprintk("number of segments is invalid\n");
3010                 return 0;
3011         }
3012
3013         /* Everything looks ok for manual mode */
3014         return 1;
3015 }
3016
3017 static int dib8000_tune(struct dvb_frontend *fe)
3018 {
3019         struct dib8000_state *state = fe->demodulator_priv;
3020         struct dtv_frontend_properties *c = &state->fe[0]->dtv_property_cache;
3021         enum frontend_tune_state *tune_state = &state->tune_state;
3022
3023         u16 locks, deeper_interleaver = 0, i;
3024         int ret = 1; /* 1 symbol duration (in 100us unit) delay most of the time */
3025
3026         unsigned long *timeout = &state->timeout;
3027         unsigned long now = jiffies;
3028         u16 init_prbs;
3029 #ifdef DIB8000_AGC_FREEZE
3030         u16 agc1, agc2;
3031 #endif
3032
3033         u32 corm[4] = {0, 0, 0, 0};
3034         u8 find_index, max_value;
3035
3036 #if 0
3037         if (*tune_state < CT_DEMOD_STOP)
3038                 dprintk("IN: context status = %d, TUNE_STATE %d autosearch step = %u jiffies = %lu\n",
3039                         state->channel_parameters_set, *tune_state, state->autosearch_state, now);
3040 #endif
3041
3042         switch (*tune_state) {
3043         case CT_DEMOD_START: /* 30 */
3044                 dib8000_reset_stats(fe);
3045
3046                 if (state->revision == 0x8090)
3047                         dib8090p_init_sdram(state);
3048                 state->status = FE_STATUS_TUNE_PENDING;
3049                 state->channel_parameters_set = is_manual_mode(c);
3050
3051                 dprintk("Tuning channel on %s search mode\n",
3052                         state->channel_parameters_set ? "manual" : "auto");
3053
3054                 dib8000_viterbi_state(state, 0); /* force chan dec in restart */
3055
3056                 /* Layer monitor */
3057                 dib8000_write_word(state, 285, dib8000_read_word(state, 285) & 0x60);
3058
3059                 dib8000_set_frequency_offset(state);
3060                 dib8000_set_bandwidth(fe, c->bandwidth_hz / 1000);
3061
3062                 if (state->channel_parameters_set == 0) { /* The channel struct is unknown, search it ! */
3063 #ifdef DIB8000_AGC_FREEZE
3064                         if (state->revision != 0x8090) {
3065                                 state->agc1_max = dib8000_read_word(state, 108);
3066                                 state->agc1_min = dib8000_read_word(state, 109);
3067                                 state->agc2_max = dib8000_read_word(state, 110);
3068                                 state->agc2_min = dib8000_read_word(state, 111);
3069                                 agc1 = dib8000_read_word(state, 388);
3070                                 agc2 = dib8000_read_word(state, 389);
3071                                 dib8000_write_word(state, 108, agc1);
3072                                 dib8000_write_word(state, 109, agc1);
3073                                 dib8000_write_word(state, 110, agc2);
3074                                 dib8000_write_word(state, 111, agc2);
3075                         }
3076 #endif
3077                         state->autosearch_state = AS_SEARCHING_FFT;
3078                         state->found_nfft = TRANSMISSION_MODE_AUTO;
3079                         state->found_guard = GUARD_INTERVAL_AUTO;
3080                         *tune_state = CT_DEMOD_SEARCH_NEXT;
3081                 } else { /* we already know the channel struct so TUNE only ! */
3082                         state->autosearch_state = AS_DONE;
3083                         *tune_state = CT_DEMOD_STEP_3;
3084                 }
3085                 state->symbol_duration = dib8000_get_symbol_duration(state);
3086                 break;
3087
3088         case CT_DEMOD_SEARCH_NEXT: /* 51 */
3089                 dib8000_autosearch_start(fe);
3090                 if (state->revision == 0x8090)
3091                         ret = 50;
3092                 else
3093                         ret = 15;
3094                 *tune_state = CT_DEMOD_STEP_1;
3095                 break;
3096
3097         case CT_DEMOD_STEP_1: /* 31 */
3098                 switch (dib8000_autosearch_irq(fe)) {
3099                 case 1: /* fail */
3100                         state->status = FE_STATUS_TUNE_FAILED;
3101                         state->autosearch_state = AS_DONE;
3102                         *tune_state = CT_DEMOD_STOP; /* else we are done here */
3103                         break;
3104                 case 2: /* Success */
3105                         state->status = FE_STATUS_FFT_SUCCESS; /* signal to the upper layer, that there was a channel found and the parameters can be read */
3106                         *tune_state = CT_DEMOD_STEP_3;
3107                         if (state->autosearch_state == AS_SEARCHING_GUARD)
3108                                 *tune_state = CT_DEMOD_STEP_2;
3109                         else
3110                                 state->autosearch_state = AS_DONE;
3111                         break;
3112                 case 3: /* Autosearch FFT max correlation endded */
3113                         *tune_state = CT_DEMOD_STEP_2;
3114                         break;
3115                 }
3116                 break;
3117
3118         case CT_DEMOD_STEP_2:
3119                 switch (state->autosearch_state) {
3120                 case AS_SEARCHING_FFT:
3121                         /* searching for the correct FFT */
3122                         if (state->revision == 0x8090) {
3123                                 corm[2] = (dib8000_read_word(state, 596) << 16) | (dib8000_read_word(state, 597));
3124                                 corm[1] = (dib8000_read_word(state, 598) << 16) | (dib8000_read_word(state, 599));
3125                                 corm[0] = (dib8000_read_word(state, 600) << 16) | (dib8000_read_word(state, 601));
3126                         } else {
3127                                 corm[2] = (dib8000_read_word(state, 594) << 16) | (dib8000_read_word(state, 595));
3128                                 corm[1] = (dib8000_read_word(state, 596) << 16) | (dib8000_read_word(state, 597));
3129                                 corm[0] = (dib8000_read_word(state, 598) << 16) | (dib8000_read_word(state, 599));
3130                         }
3131                         /* dprintk("corm fft: %u %u %u\n", corm[0], corm[1], corm[2]); */
3132
3133                         max_value = 0;
3134                         for (find_index = 1 ; find_index < 3 ; find_index++) {
3135                                 if (corm[max_value] < corm[find_index])
3136                                         max_value = find_index ;
3137                         }
3138
3139                         switch (max_value) {
3140                         case 0:
3141                                 state->found_nfft = TRANSMISSION_MODE_2K;
3142                                 break;
3143                         case 1:
3144                                 state->found_nfft = TRANSMISSION_MODE_4K;
3145                                 break;
3146                         case 2:
3147                         default:
3148                                 state->found_nfft = TRANSMISSION_MODE_8K;
3149                                 break;
3150                         }
3151                         /* dprintk("Autosearch FFT has found Mode %d\n", max_value + 1); */
3152
3153                         *tune_state = CT_DEMOD_SEARCH_NEXT;
3154                         state->autosearch_state = AS_SEARCHING_GUARD;
3155                         if (state->revision == 0x8090)
3156                                 ret = 50;
3157                         else
3158                                 ret = 10;
3159                         break;
3160                 case AS_SEARCHING_GUARD:
3161                         /* searching for the correct guard interval */
3162                         if (state->revision == 0x8090)
3163                                 state->found_guard = dib8000_read_word(state, 572) & 0x3;
3164                         else
3165                                 state->found_guard = dib8000_read_word(state, 570) & 0x3;
3166                         /* dprintk("guard interval found=%i\n", state->found_guard); */
3167
3168                         *tune_state = CT_DEMOD_STEP_3;
3169                         break;
3170                 default:
3171                         /* the demod should never be in this state */
3172                         state->status = FE_STATUS_TUNE_FAILED;
3173                         state->autosearch_state = AS_DONE;
3174                         *tune_state = CT_DEMOD_STOP; /* else we are done here */
3175                         break;
3176                 }
3177                 break;
3178
3179         case CT_DEMOD_STEP_3: /* 33 */
3180                 dib8000_set_isdbt_loop_params(state, LOOP_TUNE_1);
3181                 dib8000_set_isdbt_common_channel(state, 0, 0);/* setting the known channel parameters here */
3182                 *tune_state = CT_DEMOD_STEP_4;
3183                 break;
3184
3185         case CT_DEMOD_STEP_4: /* (34) */
3186                 dib8000_demod_restart(state);
3187
3188                 dib8000_set_sync_wait(state);
3189                 dib8000_set_diversity_in(state->fe[0], state->diversity_onoff);
3190
3191                 locks = (dib8000_read_word(state, 180) >> 6) & 0x3f; /* P_coff_winlen ? */
3192                 /* coff should lock over P_coff_winlen ofdm symbols : give 3 times this length to lock */
3193                 *timeout = dib8000_get_timeout(state, 2 * locks, SYMBOL_DEPENDENT_ON);
3194                 *tune_state = CT_DEMOD_STEP_5;
3195                 break;
3196
3197         case CT_DEMOD_STEP_5: /* (35) */
3198                 locks = dib8000_read_lock(fe);
3199                 if (locks & (0x3 << 11)) { /* coff-lock and off_cpil_lock achieved */
3200                         dib8000_update_timf(state); /* we achieved a coff_cpil_lock - it's time to update the timf */
3201                         if (!state->differential_constellation) {
3202                                 /* 2 times lmod4_win_len + 10 symbols (pipe delay after coff + nb to compute a 1st correlation) */
3203                                 *timeout = dib8000_get_timeout(state, (20 * ((dib8000_read_word(state, 188)>>5)&0x1f)), SYMBOL_DEPENDENT_ON);
3204                                 *tune_state = CT_DEMOD_STEP_7;
3205                         } else {
3206                                 *tune_state = CT_DEMOD_STEP_8;
3207                         }
3208                 } else if (time_after(now, *timeout)) {
3209                         *tune_state = CT_DEMOD_STEP_6; /* goto check for diversity input connection */
3210                 }
3211                 break;
3212
3213         case CT_DEMOD_STEP_6: /* (36)  if there is an input (diversity) */
3214                 if ((state->fe[1] != NULL) && (state->output_mode != OUTMODE_DIVERSITY)) {
3215                         /* if there is a diversity fe in input and this fe is has not already failed : wait here until this this fe has succedeed or failed */
3216                         if (dib8000_get_status(state->fe[1]) <= FE_STATUS_STD_SUCCESS) /* Something is locked on the input fe */
3217                                 *tune_state = CT_DEMOD_STEP_8; /* go for mpeg */
3218                         else if (dib8000_get_status(state->fe[1]) >= FE_STATUS_TUNE_TIME_TOO_SHORT) { /* fe in input failed also, break the current one */
3219                                 *tune_state = CT_DEMOD_STOP; /* else we are done here ; step 8 will close the loops and exit */
3220                                 dib8000_viterbi_state(state, 1); /* start viterbi chandec */
3221                                 dib8000_set_isdbt_loop_params(state, LOOP_TUNE_2);
3222                                 state->status = FE_STATUS_TUNE_FAILED;
3223                         }
3224                 } else {
3225                         dib8000_viterbi_state(state, 1); /* start viterbi chandec */
3226                         dib8000_set_isdbt_loop_params(state, LOOP_TUNE_2);
3227                         *tune_state = CT_DEMOD_STOP; /* else we are done here ; step 8 will close the loops and exit */
3228                         state->status = FE_STATUS_TUNE_FAILED;
3229                 }
3230                 break;
3231
3232         case CT_DEMOD_STEP_7: /* 37 */
3233                 locks = dib8000_read_lock(fe);
3234                 if (locks & (1<<10)) { /* lmod4_lock */
3235                         ret = 14; /* wait for 14 symbols */
3236                         *tune_state = CT_DEMOD_STEP_8;
3237                 } else if (time_after(now, *timeout))
3238                         *tune_state = CT_DEMOD_STEP_6; /* goto check for diversity input connection */
3239                 break;
3240
3241         case CT_DEMOD_STEP_8: /* 38 */
3242                 dib8000_viterbi_state(state, 1); /* start viterbi chandec */
3243                 dib8000_set_isdbt_loop_params(state, LOOP_TUNE_2);
3244
3245                 /* mpeg will never lock on this condition because init_prbs is not set : search for it !*/
3246                 if (c->isdbt_sb_mode
3247                     && c->isdbt_sb_subchannel < 14
3248                     && !state->differential_constellation) {
3249                         state->subchannel = 0;
3250                         *tune_state = CT_DEMOD_STEP_11;
3251                 } else {
3252                         *tune_state = CT_DEMOD_STEP_9;
3253                         state->status = FE_STATUS_LOCKED;
3254                 }
3255                 break;
3256
3257         case CT_DEMOD_STEP_9: /* 39 */
3258                 if ((state->revision == 0x8090) || ((dib8000_read_word(state, 1291) >> 9) & 0x1)) { /* fe capable of deinterleaving : esram */
3259                         /* defines timeout for mpeg lock depending on interleaver length of longest layer */
3260                         for (i = 0; i < 3; i++) {
3261                                 if (c->layer[i].interleaving >= deeper_interleaver) {
3262                                         dprintk("layer%i: time interleaver = %d\n", i, c->layer[i].interleaving);
3263                                         if (c->layer[i].segment_count > 0) { /* valid layer */
3264                                                 deeper_interleaver = c->layer[0].interleaving;
3265                                                 state->longest_intlv_layer = i;
3266                                         }
3267                                 }
3268                         }
3269
3270                         if (deeper_interleaver == 0)
3271                                 locks = 2; /* locks is the tmp local variable name */
3272                         else if (deeper_interleaver == 3)
3273                                 locks = 8;
3274                         else
3275                                 locks = 2 * deeper_interleaver;
3276
3277                         if (state->diversity_onoff != 0) /* because of diversity sync */
3278                                 locks *= 2;
3279
3280                         *timeout = now + msecs_to_jiffies(200 * locks); /* give the mpeg lock 800ms if sram is present */
3281                         dprintk("Deeper interleaver mode = %d on layer %d : timeout mult factor = %d => will use timeout = %ld\n",
3282                                 deeper_interleaver, state->longest_intlv_layer, locks, *timeout);
3283
3284                         *tune_state = CT_DEMOD_STEP_10;
3285                 } else
3286                         *tune_state = CT_DEMOD_STOP;
3287                 break;
3288
3289         case CT_DEMOD_STEP_10: /* 40 */
3290                 locks = dib8000_read_lock(fe);
3291                 if (locks&(1<<(7-state->longest_intlv_layer))) { /* mpeg lock : check the longest one */
3292                         dprintk("ISDB-T layer locks: Layer A %s, Layer B %s, Layer C %s\n",
3293                                 c->layer[0].segment_count ? (locks >> 7) & 0x1 ? "locked" : "NOT LOCKED" : "not enabled",
3294                                 c->layer[1].segment_count ? (locks >> 6) & 0x1 ? "locked" : "NOT LOCKED" : "not enabled",
3295                                 c->layer[2].segment_count ? (locks >> 5) & 0x1 ? "locked" : "NOT LOCKED" : "not enabled");
3296                         if (c->isdbt_sb_mode
3297                             && c->isdbt_sb_subchannel < 14
3298                             && !state->differential_constellation)
3299                                 /* signal to the upper layer, that there was a channel found and the parameters can be read */
3300                                 state->status = FE_STATUS_DEMOD_SUCCESS;
3301                         else
3302                                 state->status = FE_STATUS_DATA_LOCKED;
3303                         *tune_state = CT_DEMOD_STOP;
3304                 } else if (time_after(now, *timeout)) {
3305                         if (c->isdbt_sb_mode
3306                             && c->isdbt_sb_subchannel < 14
3307                             && !state->differential_constellation) { /* continue to try init prbs autosearch */
3308                                 state->subchannel += 3;
3309                                 *tune_state = CT_DEMOD_STEP_11;
3310                         } else { /* we are done mpeg of the longest interleaver xas not locking but let's try if an other layer has locked in the same time */
3311                                 if (locks & (0x7 << 5)) {
3312                                         dprintk("Not all ISDB-T layers locked in %d ms: Layer A %s, Layer B %s, Layer C %s\n",
3313                                                 jiffies_to_msecs(now - *timeout),
3314                                                 c->layer[0].segment_count ? (locks >> 7) & 0x1 ? "locked" : "NOT LOCKED" : "not enabled",
3315                                                 c->layer[1].segment_count ? (locks >> 6) & 0x1 ? "locked" : "NOT LOCKED" : "not enabled",
3316                                                 c->layer[2].segment_count ? (locks >> 5) & 0x1 ? "locked" : "NOT LOCKED" : "not enabled");
3317
3318                                         state->status = FE_STATUS_DATA_LOCKED;
3319                                 } else
3320                                         state->status = FE_STATUS_TUNE_FAILED;
3321                                 *tune_state = CT_DEMOD_STOP;
3322                         }
3323                 }
3324                 break;
3325
3326         case CT_DEMOD_STEP_11:  /* 41 : init prbs autosearch */
3327                 init_prbs = dib8000_get_init_prbs(state, state->subchannel);
3328
3329                 if (init_prbs) {
3330                         dib8000_set_subchannel_prbs(state, init_prbs);
3331                         *tune_state = CT_DEMOD_STEP_9;
3332                 } else {
3333                         *tune_state = CT_DEMOD_STOP;
3334                         state->status = FE_STATUS_TUNE_FAILED;
3335                 }
3336                 break;
3337
3338         default:
3339                 break;
3340         }
3341
3342         /* tuning is finished - cleanup the demod */
3343         switch (*tune_state) {
3344         case CT_DEMOD_STOP: /* (42) */
3345 #ifdef DIB8000_AGC_FREEZE
3346                 if ((state->revision != 0x8090) && (state->agc1_max != 0)) {
3347                         dib8000_write_word(state, 108, state->agc1_max);
3348                         dib8000_write_word(state, 109, state->agc1_min);
3349                         dib8000_write_word(state, 110, state->agc2_max);
3350                         dib8000_write_word(state, 111, state->agc2_min);
3351                         state->agc1_max = 0;
3352                         state->agc1_min = 0;
3353                         state->agc2_max = 0;
3354                         state->agc2_min = 0;
3355                 }
3356 #endif
3357                 ret = 0;
3358                 break;
3359         default:
3360                 break;
3361         }
3362
3363         if ((ret > 0) && (*tune_state > CT_DEMOD_STEP_3))
3364                 return ret * state->symbol_duration;
3365         if ((ret > 0) && (ret < state->symbol_duration))
3366                 return state->symbol_duration; /* at least one symbol */
3367         return ret;
3368 }
3369
3370 static int dib8000_wakeup(struct dvb_frontend *fe)
3371 {
3372         struct dib8000_state *state = fe->demodulator_priv;
3373         u8 index_frontend;
3374         int ret;
3375
3376         dib8000_set_power_mode(state, DIB8000_POWER_ALL);
3377         dib8000_set_adc_state(state, DIBX000_ADC_ON);
3378         if (dib8000_set_adc_state(state, DIBX000_SLOW_ADC_ON) != 0)
3379                 dprintk("could not start Slow ADC\n");
3380
3381         if (state->revision == 0x8090)
3382                 dib8000_sad_calib(state);
3383
3384         for (index_frontend = 1; (index_frontend < MAX_NUMBER_OF_FRONTENDS) && (state->fe[index_frontend] != NULL); index_frontend++) {
3385                 ret = state->fe[index_frontend]->ops.init(state->fe[index_frontend]);
3386                 if (ret < 0)
3387                         return ret;
3388         }
3389
3390         return 0;
3391 }
3392
3393 static int dib8000_sleep(struct dvb_frontend *fe)
3394 {
3395         struct dib8000_state *state = fe->demodulator_priv;
3396         u8 index_frontend;
3397         int ret;
3398
3399         for (index_frontend = 1; (index_frontend < MAX_NUMBER_OF_FRONTENDS) && (state->fe[index_frontend] != NULL); index_frontend++) {
3400                 ret = state->fe[index_frontend]->ops.sleep(state->fe[index_frontend]);
3401                 if (ret < 0)
3402                         return ret;
3403         }
3404
3405         if (state->revision != 0x8090)
3406                 dib8000_set_output_mode(fe, OUTMODE_HIGH_Z);
3407         dib8000_set_power_mode(state, DIB8000_POWER_INTERFACE_ONLY);
3408         return dib8000_set_adc_state(state, DIBX000_SLOW_ADC_OFF) | dib8000_set_adc_state(state, DIBX000_ADC_OFF);
3409 }
3410
3411 static int dib8000_read_status(struct dvb_frontend *fe, enum fe_status *stat);
3412
3413 static int dib8000_get_frontend(struct dvb_frontend *fe,
3414                                 struct dtv_frontend_properties *c)
3415 {
3416         struct dib8000_state *state = fe->demodulator_priv;
3417         u16 i, val = 0;
3418         enum fe_status stat = 0;
3419         u8 index_frontend, sub_index_frontend;
3420
3421         c->bandwidth_hz = 6000000;
3422
3423         /*
3424          * If called to early, get_frontend makes dib8000_tune to either
3425          * not lock or not sync. This causes dvbv5-scan/dvbv5-zap to fail.
3426          * So, let's just return if frontend 0 has not locked.
3427          */
3428         dib8000_read_status(fe, &stat);
3429         if (!(stat & FE_HAS_SYNC))
3430                 return 0;
3431
3432         dprintk("dib8000_get_frontend: TMCC lock\n");
3433         for (index_frontend = 1; (index_frontend < MAX_NUMBER_OF_FRONTENDS) && (state->fe[index_frontend] != NULL); index_frontend++) {
3434                 state->fe[index_frontend]->ops.read_status(state->fe[index_frontend], &stat);
3435                 if (stat&FE_HAS_SYNC) {
3436                         dprintk("TMCC lock on the slave%i\n", index_frontend);
3437                         /* synchronize the cache with the other frontends */
3438                         state->fe[index_frontend]->ops.get_frontend(state->fe[index_frontend], c);
3439                         for (sub_index_frontend = 0; (sub_index_frontend < MAX_NUMBER_OF_FRONTENDS) && (state->fe[sub_index_frontend] != NULL); sub_index_frontend++) {
3440                                 if (sub_index_frontend != index_frontend) {
3441                                         state->fe[sub_index_frontend]->dtv_property_cache.isdbt_sb_mode = state->fe[index_frontend]->dtv_property_cache.isdbt_sb_mode;
3442                                         state->fe[sub_index_frontend]->dtv_property_cache.inversion = state->fe[index_frontend]->dtv_property_cache.inversion;
3443                                         state->fe[sub_index_frontend]->dtv_property_cache.transmission_mode = state->fe[index_frontend]->dtv_property_cache.transmission_mode;
3444                                         state->fe[sub_index_frontend]->dtv_property_cache.guard_interval = state->fe[index_frontend]->dtv_property_cache.guard_interval;
3445                                         state->fe[sub_index_frontend]->dtv_property_cache.isdbt_partial_reception = state->fe[index_frontend]->dtv_property_cache.isdbt_partial_reception;
3446                                         for (i = 0; i < 3; i++) {
3447                                                 state->fe[sub_index_frontend]->dtv_property_cache.layer[i].segment_count = state->fe[index_frontend]->dtv_property_cache.layer[i].segment_count;
3448                                                 state->fe[sub_index_frontend]->dtv_property_cache.layer[i].interleaving = state->fe[index_frontend]->dtv_property_cache.layer[i].interleaving;
3449                                                 state->fe[sub_index_frontend]->dtv_property_cache.layer[i].fec = state->fe[index_frontend]->dtv_property_cache.layer[i].fec;
3450                                                 state->fe[sub_index_frontend]->dtv_property_cache.layer[i].modulation = state->fe[index_frontend]->dtv_property_cache.layer[i].modulation;
3451                                         }
3452                                 }
3453                         }
3454                         return 0;
3455                 }
3456         }
3457
3458         c->isdbt_sb_mode = dib8000_read_word(state, 508) & 0x1;
3459
3460         if (state->revision == 0x8090)
3461                 val = dib8000_read_word(state, 572);
3462         else
3463                 val = dib8000_read_word(state, 570);
3464         c->inversion = (val & 0x40) >> 6;
3465         switch ((val & 0x30) >> 4) {
3466         case 1:
3467                 c->transmission_mode = TRANSMISSION_MODE_2K;
3468                 dprintk("dib8000_get_frontend: transmission mode 2K\n");
3469                 break;
3470         case 2:
3471                 c->transmission_mode = TRANSMISSION_MODE_4K;
3472                 dprintk("dib8000_get_frontend: transmission mode 4K\n");
3473                 break;
3474         case 3:
3475         default:
3476                 c->transmission_mode = TRANSMISSION_MODE_8K;
3477                 dprintk("dib8000_get_frontend: transmission mode 8K\n");
3478                 break;
3479         }
3480
3481         switch (val & 0x3) {
3482         case 0:
3483                 c->guard_interval = GUARD_INTERVAL_1_32;
3484                 dprintk("dib8000_get_frontend: Guard Interval = 1/32\n");
3485                 break;
3486         case 1:
3487                 c->guard_interval = GUARD_INTERVAL_1_16;
3488                 dprintk("dib8000_get_frontend: Guard Interval = 1/16\n");
3489                 break;
3490         case 2:
3491                 dprintk("dib8000_get_frontend: Guard Interval = 1/8\n");
3492                 c->guard_interval = GUARD_INTERVAL_1_8;
3493                 break;
3494         case 3:
3495                 dprintk("dib8000_get_frontend: Guard Interval = 1/4\n");
3496                 c->guard_interval = GUARD_INTERVAL_1_4;
3497                 break;
3498         }
3499
3500         val = dib8000_read_word(state, 505);
3501         c->isdbt_partial_reception = val & 1;
3502         dprintk("dib8000_get_frontend: partial_reception = %d\n", c->isdbt_partial_reception);
3503
3504         for (i = 0; i < 3; i++) {
3505                 int show;
3506
3507                 val = dib8000_read_word(state, 493 + i) & 0x0f;
3508                 c->layer[i].segment_count = val;
3509
3510                 if (val == 0 || val > 13)
3511                         show = 0;
3512                 else
3513                         show = 1;
3514
3515                 if (show)
3516                         dprintk("dib8000_get_frontend: Layer %d segments = %d\n",
3517                                 i, c->layer[i].segment_count);
3518
3519                 val = dib8000_read_word(state, 499 + i) & 0x3;
3520                 /* Interleaving can be 0, 1, 2 or 4 */
3521                 if (val == 3)
3522                         val = 4;
3523                 c->layer[i].interleaving = val;
3524                 if (show)
3525                         dprintk("dib8000_get_frontend: Layer %d time_intlv = %d\n",
3526                                 i, c->layer[i].interleaving);
3527
3528                 val = dib8000_read_word(state, 481 + i);
3529                 switch (val & 0x7) {
3530                 case 1:
3531                         c->layer[i].fec = FEC_1_2;
3532                         if (show)
3533                                 dprintk("dib8000_get_frontend: Layer %d Code Rate = 1/2\n", i);
3534                         break;
3535                 case 2:
3536                         c->layer[i].fec = FEC_2_3;
3537                         if (show)
3538                                 dprintk("dib8000_get_frontend: Layer %d Code Rate = 2/3\n", i);
3539                         break;
3540                 case 3:
3541                         c->layer[i].fec = FEC_3_4;
3542                         if (show)
3543                                 dprintk("dib8000_get_frontend: Layer %d Code Rate = 3/4\n", i);
3544                         break;
3545                 case 5:
3546                         c->layer[i].fec = FEC_5_6;
3547                         if (show)
3548                                 dprintk("dib8000_get_frontend: Layer %d Code Rate = 5/6\n", i);
3549                         break;
3550                 default:
3551                         c->layer[i].fec = FEC_7_8;
3552                         if (show)
3553                                 dprintk("dib8000_get_frontend: Layer %d Code Rate = 7/8\n", i);
3554                         break;
3555                 }
3556
3557                 val = dib8000_read_word(state, 487 + i);
3558                 switch (val & 0x3) {
3559                 case 0:
3560                         c->layer[i].modulation = DQPSK;
3561                         if (show)
3562                                 dprintk("dib8000_get_frontend: Layer %d DQPSK\n", i);
3563                         break;
3564                 case 1:
3565                         c->layer[i].modulation = QPSK;
3566                         if (show)
3567                                 dprintk("dib8000_get_frontend: Layer %d QPSK\n", i);
3568                         break;
3569                 case 2:
3570                         c->layer[i].modulation = QAM_16;
3571                         if (show)
3572                                 dprintk("dib8000_get_frontend: Layer %d QAM16\n", i);
3573                         break;
3574                 case 3:
3575                 default:
3576                         c->layer[i].modulation = QAM_64;
3577                         if (show)
3578                                 dprintk("dib8000_get_frontend: Layer %d QAM64\n", i);
3579                         break;
3580                 }
3581         }
3582
3583         /* synchronize the cache with the other frontends */
3584         for (index_frontend = 1; (index_frontend < MAX_NUMBER_OF_FRONTENDS) && (state->fe[index_frontend] != NULL); index_frontend++) {
3585                 state->fe[index_frontend]->dtv_property_cache.isdbt_sb_mode = c->isdbt_sb_mode;
3586                 state->fe[index_frontend]->dtv_property_cache.inversion = c->inversion;
3587                 state->fe[index_frontend]->dtv_property_cache.transmission_mode = c->transmission_mode;
3588                 state->fe[index_frontend]->dtv_property_cache.guard_interval = c->guard_interval;
3589                 state->fe[index_frontend]->dtv_property_cache.isdbt_partial_reception = c->isdbt_partial_reception;
3590                 for (i = 0; i < 3; i++) {
3591                         state->fe[index_frontend]->dtv_property_cache.layer[i].segment_count = c->layer[i].segment_count;
3592                         state->fe[index_frontend]->dtv_property_cache.layer[i].interleaving = c->layer[i].interleaving;
3593                         state->fe[index_frontend]->dtv_property_cache.layer[i].fec = c->layer[i].fec;
3594                         state->fe[index_frontend]->dtv_property_cache.layer[i].modulation = c->layer[i].modulation;
3595                 }
3596         }
3597         return 0;
3598 }
3599
3600 static int dib8000_set_frontend(struct dvb_frontend *fe)
3601 {
3602         struct dib8000_state *state = fe->demodulator_priv;
3603         struct dtv_frontend_properties *c = &state->fe[0]->dtv_property_cache;
3604         int l, i, active, time, time_slave = 0;
3605         u8 exit_condition, index_frontend;
3606         unsigned long delay, callback_time;
3607
3608         if (c->frequency == 0) {
3609                 dprintk("dib8000: must at least specify frequency\n");
3610                 return 0;
3611         }
3612
3613         if (c->bandwidth_hz == 0) {
3614                 dprintk("dib8000: no bandwidth specified, set to default\n");
3615                 c->bandwidth_hz = 6000000;
3616         }
3617
3618         for (index_frontend = 0; (index_frontend < MAX_NUMBER_OF_FRONTENDS) && (state->fe[index_frontend] != NULL); index_frontend++) {
3619                 /* synchronization of the cache */
3620                 state->fe[index_frontend]->dtv_property_cache.delivery_system = SYS_ISDBT;
3621                 memcpy(&state->fe[index_frontend]->dtv_property_cache, &fe->dtv_property_cache, sizeof(struct dtv_frontend_properties));
3622
3623                 /* set output mode and diversity input */
3624                 if (state->revision != 0x8090) {
3625                         dib8000_set_diversity_in(state->fe[index_frontend], 1);
3626                         if (index_frontend != 0)
3627                                 dib8000_set_output_mode(state->fe[index_frontend],
3628                                                 OUTMODE_DIVERSITY);
3629                         else
3630                                 dib8000_set_output_mode(state->fe[0], OUTMODE_HIGH_Z);
3631                 } else {
3632                         dib8096p_set_diversity_in(state->fe[index_frontend], 1);
3633                         if (index_frontend != 0)
3634                                 dib8096p_set_output_mode(state->fe[index_frontend],
3635                                                 OUTMODE_DIVERSITY);
3636                         else
3637                                 dib8096p_set_output_mode(state->fe[0], OUTMODE_HIGH_Z);
3638                 }
3639
3640                 /* tune the tuner */
3641                 if (state->fe[index_frontend]->ops.tuner_ops.set_params)
3642                         state->fe[index_frontend]->ops.tuner_ops.set_params(state->fe[index_frontend]);
3643
3644                 dib8000_set_tune_state(state->fe[index_frontend], CT_AGC_START);
3645         }
3646
3647         /* turn off the diversity of the last chip */
3648         if (state->revision != 0x8090)
3649                 dib8000_set_diversity_in(state->fe[index_frontend - 1], 0);
3650         else
3651                 dib8096p_set_diversity_in(state->fe[index_frontend - 1], 0);
3652
3653         /* start up the AGC */
3654         do {
3655                 time = dib8000_agc_startup(state->fe[0]);
3656                 for (index_frontend = 1; (index_frontend < MAX_NUMBER_OF_FRONTENDS) && (state->fe[index_frontend] != NULL); index_frontend++) {
3657                         time_slave = dib8000_agc_startup(state->fe[index_frontend]);
3658                         if (time == 0)
3659                                 time = time_slave;
3660                         else if ((time_slave != 0) && (time_slave > time))
3661                                 time = time_slave;
3662                 }
3663                 if (time == 0)
3664                         break;
3665
3666                 /*
3667                  * Despite dib8000_agc_startup returns time at a 0.1 ms range,
3668                  * the actual sleep time depends on CONFIG_HZ. The worse case
3669                  * is when CONFIG_HZ=100. In such case, the minimum granularity
3670                  * is 10ms. On some real field tests, the tuner sometimes don't
3671                  * lock when this timer is lower than 10ms. So, enforce a 10ms
3672                  * granularity.
3673                  */
3674                 time = 10 * (time + 99)/100;
3675                 usleep_range(time * 1000, (time + 1) * 1000);
3676                 exit_condition = 1;
3677                 for (index_frontend = 0; (index_frontend < MAX_NUMBER_OF_FRONTENDS) && (state->fe[index_frontend] != NULL); index_frontend++) {
3678                         if (dib8000_get_tune_state(state->fe[index_frontend]) != CT_AGC_STOP) {
3679                                 exit_condition = 0;
3680                                 break;
3681                         }
3682                 }
3683         } while (exit_condition == 0);
3684
3685         for (index_frontend = 0; (index_frontend < MAX_NUMBER_OF_FRONTENDS) && (state->fe[index_frontend] != NULL); index_frontend++)
3686                 dib8000_set_tune_state(state->fe[index_frontend], CT_DEMOD_START);
3687
3688         active = 1;
3689         do {
3690                 callback_time = 0;
3691                 for (index_frontend = 0; (index_frontend < MAX_NUMBER_OF_FRONTENDS) && (state->fe[index_frontend] != NULL); index_frontend++) {
3692                         delay = dib8000_tune(state->fe[index_frontend]);
3693                         if (delay != 0) {
3694                                 delay = jiffies + usecs_to_jiffies(100 * delay);
3695                                 if (!callback_time || delay < callback_time)
3696                                         callback_time = delay;
3697                         }
3698
3699                         /* we are in autosearch */
3700                         if (state->channel_parameters_set == 0) { /* searching */
3701                                 if ((dib8000_get_status(state->fe[index_frontend]) == FE_STATUS_DEMOD_SUCCESS) || (dib8000_get_status(state->fe[index_frontend]) == FE_STATUS_FFT_SUCCESS)) {
3702                                         dprintk("autosearch succeeded on fe%i\n", index_frontend);
3703                                         dib8000_get_frontend(state->fe[index_frontend], c); /* we read the channel parameters from the frontend which was successful */
3704                                         state->channel_parameters_set = 1;
3705
3706                                         for (l = 0; (l < MAX_NUMBER_OF_FRONTENDS) && (state->fe[l] != NULL); l++) {
3707                                                 if (l != index_frontend) { /* and for all frontend except the successful one */
3708                                                         dprintk("Restarting frontend %d\n", l);
3709                                                         dib8000_tune_restart_from_demod(state->fe[l]);
3710
3711                                                         state->fe[l]->dtv_property_cache.isdbt_sb_mode = state->fe[index_frontend]->dtv_property_cache.isdbt_sb_mode;
3712                                                         state->fe[l]->dtv_property_cache.inversion = state->fe[index_frontend]->dtv_property_cache.inversion;
3713                                                         state->fe[l]->dtv_property_cache.transmission_mode = state->fe[index_frontend]->dtv_property_cache.transmission_mode;
3714                                                         state->fe[l]->dtv_property_cache.guard_interval = state->fe[index_frontend]->dtv_property_cache.guard_interval;
3715                                                         state->fe[l]->dtv_property_cache.isdbt_partial_reception = state->fe[index_frontend]->dtv_property_cache.isdbt_partial_reception;
3716                                                         for (i = 0; i < 3; i++) {
3717                                                                 state->fe[l]->dtv_property_cache.layer[i].segment_count = state->fe[index_frontend]->dtv_property_cache.layer[i].segment_count;
3718                                                                 state->fe[l]->dtv_property_cache.layer[i].interleaving = state->fe[index_frontend]->dtv_property_cache.layer[i].interleaving;
3719                                                                 state->fe[l]->dtv_property_cache.layer[i].fec = state->fe[index_frontend]->dtv_property_cache.layer[i].fec;
3720                                                                 state->fe[l]->dtv_property_cache.layer[i].modulation = state->fe[index_frontend]->dtv_property_cache.layer[i].modulation;
3721                                                         }
3722
3723                                                 }
3724                                         }
3725                                 }
3726                         }
3727                 }
3728                 /* tuning is done when the master frontend is done (failed or success) */
3729                 if (dib8000_get_status(state->fe[0]) == FE_STATUS_TUNE_FAILED ||
3730                                 dib8000_get_status(state->fe[0]) == FE_STATUS_LOCKED ||
3731                                 dib8000_get_status(state->fe[0]) == FE_STATUS_DATA_LOCKED) {
3732                         active = 0;
3733                         /* we need to wait for all frontends to be finished */
3734                         for (index_frontend = 0; (index_frontend < MAX_NUMBER_OF_FRONTENDS) && (state->fe[index_frontend] != NULL); index_frontend++) {
3735                                 if (dib8000_get_tune_state(state->fe[index_frontend]) != CT_DEMOD_STOP)
3736                                         active = 1;
3737                         }
3738                         if (active == 0)
3739                                 dprintk("tuning done with status %d\n", dib8000_get_status(state->fe[0]));
3740                 }
3741
3742                 if ((active == 1) && (callback_time == 0)) {
3743                         dprintk("strange callback time something went wrong\n");
3744                         active = 0;
3745                 }
3746
3747                 while ((active == 1) && (time_before(jiffies, callback_time)))
3748                         msleep(100);
3749         } while (active);
3750
3751         /* set output mode */
3752         if (state->revision != 0x8090)
3753                 dib8000_set_output_mode(state->fe[0], state->cfg.output_mode);
3754         else {
3755                 dib8096p_set_output_mode(state->fe[0], state->cfg.output_mode);
3756                 if (state->cfg.enMpegOutput == 0) {
3757                         dib8096p_setDibTxMux(state, MPEG_ON_DIBTX);
3758                         dib8096p_setHostBusMux(state, DIBTX_ON_HOSTBUS);
3759                 }
3760         }
3761
3762         return 0;
3763 }
3764
3765 static int dib8000_get_stats(struct dvb_frontend *fe, enum fe_status stat);
3766
3767 static int dib8000_read_status(struct dvb_frontend *fe, enum fe_status *stat)
3768 {
3769         struct dib8000_state *state = fe->demodulator_priv;
3770         u16 lock_slave = 0, lock;
3771         u8 index_frontend;
3772
3773         lock = dib8000_read_lock(fe);
3774         for (index_frontend = 1; (index_frontend < MAX_NUMBER_OF_FRONTENDS) && (state->fe[index_frontend] != NULL); index_frontend++)
3775                 lock_slave |= dib8000_read_lock(state->fe[index_frontend]);
3776
3777         *stat = 0;
3778
3779         if (((lock >> 13) & 1) || ((lock_slave >> 13) & 1))
3780                 *stat |= FE_HAS_SIGNAL;
3781
3782         if (((lock >> 8) & 1) || ((lock_slave >> 8) & 1)) /* Equal */
3783                 *stat |= FE_HAS_CARRIER;
3784
3785         if ((((lock >> 1) & 0xf) == 0xf) || (((lock_slave >> 1) & 0xf) == 0xf)) /* TMCC_SYNC */
3786                 *stat |= FE_HAS_SYNC;
3787
3788         if ((((lock >> 12) & 1) || ((lock_slave >> 12) & 1)) && ((lock >> 5) & 7)) /* FEC MPEG */
3789                 *stat |= FE_HAS_LOCK;
3790
3791         if (((lock >> 12) & 1) || ((lock_slave >> 12) & 1)) {
3792                 lock = dib8000_read_word(state, 554); /* Viterbi Layer A */
3793                 if (lock & 0x01)
3794                         *stat |= FE_HAS_VITERBI;
3795
3796                 lock = dib8000_read_word(state, 555); /* Viterbi Layer B */
3797                 if (lock & 0x01)
3798                         *stat |= FE_HAS_VITERBI;
3799
3800                 lock = dib8000_read_word(state, 556); /* Viterbi Layer C */
3801                 if (lock & 0x01)
3802                         *stat |= FE_HAS_VITERBI;
3803         }
3804         dib8000_get_stats(fe, *stat);
3805
3806         return 0;
3807 }
3808
3809 static int dib8000_read_ber(struct dvb_frontend *fe, u32 * ber)
3810 {
3811         struct dib8000_state *state = fe->demodulator_priv;
3812
3813         /* 13 segments */
3814         if (state->revision == 0x8090)
3815                 *ber = (dib8000_read_word(state, 562) << 16) |
3816                         dib8000_read_word(state, 563);
3817         else
3818                 *ber = (dib8000_read_word(state, 560) << 16) |
3819                         dib8000_read_word(state, 561);
3820         return 0;
3821 }
3822
3823 static int dib8000_read_unc_blocks(struct dvb_frontend *fe, u32 * unc)
3824 {
3825         struct dib8000_state *state = fe->demodulator_priv;
3826
3827         /* packet error on 13 seg */
3828         if (state->revision == 0x8090)
3829                 *unc = dib8000_read_word(state, 567);
3830         else
3831                 *unc = dib8000_read_word(state, 565);
3832         return 0;
3833 }
3834
3835 static int dib8000_read_signal_strength(struct dvb_frontend *fe, u16 * strength)
3836 {
3837         struct dib8000_state *state = fe->demodulator_priv;
3838         u8 index_frontend;
3839         u16 val;
3840
3841         *strength = 0;
3842         for (index_frontend = 1; (index_frontend < MAX_NUMBER_OF_FRONTENDS) && (state->fe[index_frontend] != NULL); index_frontend++) {
3843                 state->fe[index_frontend]->ops.read_signal_strength(state->fe[index_frontend], &val);
3844                 if (val > 65535 - *strength)
3845                         *strength = 65535;
3846                 else
3847                         *strength += val;
3848         }
3849
3850         val = 65535 - dib8000_read_word(state, 390);
3851         if (val > 65535 - *strength)
3852                 *strength = 65535;
3853         else
3854                 *strength += val;
3855         return 0;
3856 }
3857
3858 static u32 dib8000_get_snr(struct dvb_frontend *fe)
3859 {
3860         struct dib8000_state *state = fe->demodulator_priv;
3861         u32 n, s, exp;
3862         u16 val;
3863
3864         if (state->revision != 0x8090)
3865                 val = dib8000_read_word(state, 542);
3866         else
3867                 val = dib8000_read_word(state, 544);
3868         n = (val >> 6) & 0xff;
3869         exp = (val & 0x3f);
3870         if ((exp & 0x20) != 0)
3871                 exp -= 0x40;
3872         n <<= exp+16;
3873
3874         if (state->revision != 0x8090)
3875                 val = dib8000_read_word(state, 543);
3876         else
3877                 val = dib8000_read_word(state, 545);
3878         s = (val >> 6) & 0xff;
3879         exp = (val & 0x3f);
3880         if ((exp & 0x20) != 0)
3881                 exp -= 0x40;
3882         s <<= exp+16;
3883
3884         if (n > 0) {
3885                 u32 t = (s/n) << 16;
3886                 return t + ((s << 16) - n*t) / n;
3887         }
3888         return 0xffffffff;
3889 }
3890
3891 static int dib8000_read_snr(struct dvb_frontend *fe, u16 * snr)
3892 {
3893         struct dib8000_state *state = fe->demodulator_priv;
3894         u8 index_frontend;
3895         u32 snr_master;
3896
3897         snr_master = dib8000_get_snr(fe);
3898         for (index_frontend = 1; (index_frontend < MAX_NUMBER_OF_FRONTENDS) && (state->fe[index_frontend] != NULL); index_frontend++)
3899                 snr_master += dib8000_get_snr(state->fe[index_frontend]);
3900
3901         if ((snr_master >> 16) != 0) {
3902                 snr_master = 10*intlog10(snr_master>>16);
3903                 *snr = snr_master / ((1 << 24) / 10);
3904         }
3905         else
3906                 *snr = 0;
3907
3908         return 0;
3909 }
3910
3911 struct per_layer_regs {
3912         u16 lock, ber, per;
3913 };
3914
3915 static const struct per_layer_regs per_layer_regs[] = {
3916         { 554, 560, 562 },
3917         { 555, 576, 578 },
3918         { 556, 581, 583 },
3919 };
3920
3921 struct linear_segments {
3922         unsigned x;
3923         signed y;
3924 };
3925
3926 /*
3927  * Table to estimate signal strength in dBm.
3928  * This table was empirically determinated by measuring the signal
3929  * strength generated by a DTA-2111 RF generator directly connected into
3930  * a dib8076 device (a PixelView PV-D231U stick), using a good quality
3931  * 3 meters RC6 cable and good RC6 connectors.
3932  * The real value can actually be different on other devices, depending
3933  * on several factors, like if LNA is enabled or not, if diversity is
3934  * enabled, type of connectors, etc.
3935  * Yet, it is better to use this measure in dB than a random non-linear
3936  * percentage value, especially for antenna adjustments.
3937  * On my tests, the precision of the measure using this table is about
3938  * 0.5 dB, with sounds reasonable enough.
3939  */
3940 static struct linear_segments strength_to_db_table[] = {
3941         { 55953, 108500 },      /* -22.5 dBm */
3942         { 55394, 108000 },
3943         { 53834, 107000 },
3944         { 52863, 106000 },
3945         { 52239, 105000 },
3946         { 52012, 104000 },
3947         { 51803, 103000 },
3948         { 51566, 102000 },
3949         { 51356, 101000 },
3950         { 51112, 100000 },
3951         { 50869,  99000 },
3952         { 50600,  98000 },
3953         { 50363,  97000 },
3954         { 50117,  96000 },      /* -35 dBm */
3955         { 49889,  95000 },
3956         { 49680,  94000 },
3957         { 49493,  93000 },
3958         { 49302,  92000 },
3959         { 48929,  91000 },
3960         { 48416,  90000 },
3961         { 48035,  89000 },
3962         { 47593,  88000 },
3963         { 47282,  87000 },
3964         { 46953,  86000 },
3965         { 46698,  85000 },
3966         { 45617,  84000 },
3967         { 44773,  83000 },
3968         { 43845,  82000 },
3969         { 43020,  81000 },
3970         { 42010,  80000 },      /* -51 dBm */
3971         {     0,      0 },
3972 };
3973
3974 static u32 interpolate_value(u32 value, struct linear_segments *segments,
3975                              unsigned len)
3976 {
3977         u64 tmp64;
3978         u32 dx;
3979         s32 dy;
3980         int i, ret;
3981
3982         if (value >= segments[0].x)
3983                 return segments[0].y;
3984         if (value < segments[len-1].x)
3985                 return segments[len-1].y;
3986
3987         for (i = 1; i < len - 1; i++) {
3988                 /* If value is identical, no need to interpolate */
3989                 if (value == segments[i].x)
3990                         return segments[i].y;
3991                 if (value > segments[i].x)
3992                         break;
3993         }
3994
3995         /* Linear interpolation between the two (x,y) points */
3996         dy = segments[i - 1].y - segments[i].y;
3997         dx = segments[i - 1].x - segments[i].x;
3998
3999         tmp64 = value - segments[i].x;
4000         tmp64 *= dy;
4001         do_div(tmp64, dx);
4002         ret = segments[i].y + tmp64;
4003
4004         return ret;
4005 }
4006
4007 static u32 dib8000_get_time_us(struct dvb_frontend *fe, int layer)
4008 {
4009         struct dib8000_state *state = fe->demodulator_priv;
4010         struct dtv_frontend_properties *c = &state->fe[0]->dtv_property_cache;
4011         int ini_layer, end_layer, i;
4012         u64 time_us, tmp64;
4013         u32 tmp, denom;
4014         int guard, rate_num, rate_denum = 1, bits_per_symbol, nsegs;
4015         int interleaving = 0, fft_div;
4016
4017         if (layer >= 0) {
4018                 ini_layer = layer;
4019                 end_layer = layer + 1;
4020         } else {
4021                 ini_layer = 0;
4022                 end_layer = 3;
4023         }
4024
4025         switch (c->guard_interval) {
4026         case GUARD_INTERVAL_1_4:
4027                 guard = 4;
4028                 break;
4029         case GUARD_INTERVAL_1_8:
4030                 guard = 8;
4031                 break;
4032         case GUARD_INTERVAL_1_16:
4033                 guard = 16;
4034                 break;
4035         default:
4036         case GUARD_INTERVAL_1_32:
4037                 guard = 32;
4038                 break;
4039         }
4040
4041         switch (c->transmission_mode) {
4042         case TRANSMISSION_MODE_2K:
4043                 fft_div = 4;
4044                 break;
4045         case TRANSMISSION_MODE_4K:
4046                 fft_div = 2;
4047                 break;
4048         default:
4049         case TRANSMISSION_MODE_8K:
4050                 fft_div = 1;
4051                 break;
4052         }
4053
4054         denom = 0;
4055         for (i = ini_layer; i < end_layer; i++) {
4056                 nsegs = c->layer[i].segment_count;
4057                 if (nsegs == 0 || nsegs > 13)
4058                         continue;
4059
4060                 switch (c->layer[i].modulation) {
4061                 case DQPSK:
4062                 case QPSK:
4063                         bits_per_symbol = 2;
4064                         break;
4065                 case QAM_16:
4066                         bits_per_symbol = 4;
4067                         break;
4068                 default:
4069                 case QAM_64:
4070                         bits_per_symbol = 6;
4071                         break;
4072                 }
4073
4074                 switch (c->layer[i].fec) {
4075                 case FEC_1_2:
4076                         rate_num = 1;
4077                         rate_denum = 2;
4078                         break;
4079                 case FEC_2_3:
4080                         rate_num = 2;
4081                         rate_denum = 3;
4082                         break;
4083                 case FEC_3_4:
4084                         rate_num = 3;
4085                         rate_denum = 4;
4086                         break;
4087                 case FEC_5_6:
4088                         rate_num = 5;
4089                         rate_denum = 6;
4090                         break;
4091                 default:
4092                 case FEC_7_8:
4093                         rate_num = 7;
4094                         rate_denum = 8;
4095                         break;
4096                 }
4097
4098                 interleaving = c->layer[i].interleaving;
4099
4100                 denom += bits_per_symbol * rate_num * fft_div * nsegs * 384;
4101         }
4102
4103         /* If all goes wrong, wait for 1s for the next stats */
4104         if (!denom)
4105                 return 0;
4106
4107         /* Estimate the period for the total bit rate */
4108         time_us = rate_denum * (1008 * 1562500L);
4109         tmp64 = time_us;
4110         do_div(tmp64, guard);
4111         time_us = time_us + tmp64;
4112         time_us += denom / 2;
4113         do_div(time_us, denom);
4114
4115         tmp = 1008 * 96 * interleaving;
4116         time_us += tmp + tmp / guard;
4117
4118         return time_us;
4119 }
4120
4121 static int dib8000_get_stats(struct dvb_frontend *fe, enum fe_status stat)
4122 {
4123         struct dib8000_state *state = fe->demodulator_priv;
4124         struct dtv_frontend_properties *c = &state->fe[0]->dtv_property_cache;
4125         int i;
4126         int show_per_stats = 0;
4127         u32 time_us = 0, snr, val;
4128         u64 blocks;
4129         s32 db;
4130         u16 strength;
4131
4132         /* Get Signal strength */
4133         dib8000_read_signal_strength(fe, &strength);
4134         val = strength;
4135         db = interpolate_value(val,
4136                                strength_to_db_table,
4137                                ARRAY_SIZE(strength_to_db_table)) - 131000;
4138         c->strength.stat[0].svalue = db;
4139
4140         /* UCB/BER/CNR measures require lock */
4141         if (!(stat & FE_HAS_LOCK)) {
4142                 c->cnr.len = 1;
4143                 c->block_count.len = 1;
4144                 c->block_error.len = 1;
4145                 c->post_bit_error.len = 1;
4146                 c->post_bit_count.len = 1;
4147                 c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
4148                 c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
4149                 c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
4150                 c->block_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
4151                 c->block_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
4152                 return 0;
4153         }
4154
4155         /* Check if time for stats was elapsed */
4156         if (time_after(jiffies, state->per_jiffies_stats)) {
4157                 state->per_jiffies_stats = jiffies + msecs_to_jiffies(1000);
4158
4159                 /* Get SNR */
4160                 snr = dib8000_get_snr(fe);
4161                 for (i = 1; i < MAX_NUMBER_OF_FRONTENDS; i++) {
4162                         if (state->fe[i])
4163                                 snr += dib8000_get_snr(state->fe[i]);
4164                 }
4165                 snr = snr >> 16;
4166
4167                 if (snr) {
4168                         snr = 10 * intlog10(snr);
4169                         snr = (1000L * snr) >> 24;
4170                 } else {
4171                         snr = 0;
4172                 }
4173                 c->cnr.stat[0].svalue = snr;
4174                 c->cnr.stat[0].scale = FE_SCALE_DECIBEL;
4175
4176                 /* Get UCB measures */
4177                 dib8000_read_unc_blocks(fe, &val);
4178                 if (val < state->init_ucb)
4179                         state->init_ucb += 0x100000000LL;
4180
4181                 c->block_error.stat[0].scale = FE_SCALE_COUNTER;
4182                 c->block_error.stat[0].uvalue = val + state->init_ucb;
4183
4184                 /* Estimate the number of packets based on bitrate */
4185                 if (!time_us)
4186                         time_us = dib8000_get_time_us(fe, -1);
4187
4188                 if (time_us) {
4189                         blocks = 1250000ULL * 1000000ULL;
4190                         do_div(blocks, time_us * 8 * 204);
4191                         c->block_count.stat[0].scale = FE_SCALE_COUNTER;
4192                         c->block_count.stat[0].uvalue += blocks;
4193                 }
4194
4195                 show_per_stats = 1;
4196         }
4197
4198         /* Get post-BER measures */
4199         if (time_after(jiffies, state->ber_jiffies_stats)) {
4200                 time_us = dib8000_get_time_us(fe, -1);
4201                 state->ber_jiffies_stats = jiffies + msecs_to_jiffies((time_us + 500) / 1000);
4202
4203                 dprintk("Next all layers stats available in %u us.\n", time_us);
4204
4205                 dib8000_read_ber(fe, &val);
4206                 c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER;
4207                 c->post_bit_error.stat[0].uvalue += val;
4208
4209                 c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER;
4210                 c->post_bit_count.stat[0].uvalue += 100000000;
4211         }
4212
4213         if (state->revision < 0x8002)
4214                 return 0;
4215
4216         c->block_error.len = 4;
4217         c->post_bit_error.len = 4;
4218         c->post_bit_count.len = 4;
4219
4220         for (i = 0; i < 3; i++) {
4221                 unsigned nsegs = c->layer[i].segment_count;
4222
4223                 if (nsegs == 0 || nsegs > 13)
4224                         continue;
4225
4226                 time_us = 0;
4227
4228                 if (time_after(jiffies, state->ber_jiffies_stats_layer[i])) {
4229                         time_us = dib8000_get_time_us(fe, i);
4230
4231                         state->ber_jiffies_stats_layer[i] = jiffies + msecs_to_jiffies((time_us + 500) / 1000);
4232                         dprintk("Next layer %c  stats will be available in %u us\n",
4233                                 'A' + i, time_us);
4234
4235                         val = dib8000_read_word(state, per_layer_regs[i].ber);
4236                         c->post_bit_error.stat[1 + i].scale = FE_SCALE_COUNTER;
4237                         c->post_bit_error.stat[1 + i].uvalue += val;
4238
4239                         c->post_bit_count.stat[1 + i].scale = FE_SCALE_COUNTER;
4240                         c->post_bit_count.stat[1 + i].uvalue += 100000000;
4241                 }
4242
4243                 if (show_per_stats) {
4244                         val = dib8000_read_word(state, per_layer_regs[i].per);
4245
4246                         c->block_error.stat[1 + i].scale = FE_SCALE_COUNTER;
4247                         c->block_error.stat[1 + i].uvalue += val;
4248
4249                         if (!time_us)
4250                                 time_us = dib8000_get_time_us(fe, i);
4251                         if (time_us) {
4252                                 blocks = 1250000ULL * 1000000ULL;
4253                                 do_div(blocks, time_us * 8 * 204);
4254                                 c->block_count.stat[0].scale = FE_SCALE_COUNTER;
4255                                 c->block_count.stat[0].uvalue += blocks;
4256                         }
4257                 }
4258         }
4259         return 0;
4260 }
4261
4262 static int dib8000_set_slave_frontend(struct dvb_frontend *fe, struct dvb_frontend *fe_slave)
4263 {
4264         struct dib8000_state *state = fe->demodulator_priv;
4265         u8 index_frontend = 1;
4266
4267         while ((index_frontend < MAX_NUMBER_OF_FRONTENDS) && (state->fe[index_frontend] != NULL))
4268                 index_frontend++;
4269         if (index_frontend < MAX_NUMBER_OF_FRONTENDS) {
4270                 dprintk("set slave fe %p to index %i\n", fe_slave, index_frontend);
4271                 state->fe[index_frontend] = fe_slave;
4272                 return 0;
4273         }
4274
4275         dprintk("too many slave frontend\n");
4276         return -ENOMEM;
4277 }
4278
4279 static struct dvb_frontend *dib8000_get_slave_frontend(struct dvb_frontend *fe, int slave_index)
4280 {
4281         struct dib8000_state *state = fe->demodulator_priv;
4282
4283         if (slave_index >= MAX_NUMBER_OF_FRONTENDS)
4284                 return NULL;
4285         return state->fe[slave_index];
4286 }
4287
4288 static int dib8000_i2c_enumeration(struct i2c_adapter *host, int no_of_demods,
4289                 u8 default_addr, u8 first_addr, u8 is_dib8096p)
4290 {
4291         int k = 0, ret = 0;
4292         u8 new_addr = 0;
4293         struct i2c_device client = {.adap = host };
4294
4295         client.i2c_write_buffer = kzalloc(4, GFP_KERNEL);
4296         if (!client.i2c_write_buffer) {
4297                 dprintk("%s: not enough memory\n", __func__);
4298                 return -ENOMEM;
4299         }
4300         client.i2c_read_buffer = kzalloc(4, GFP_KERNEL);
4301         if (!client.i2c_read_buffer) {
4302                 dprintk("%s: not enough memory\n", __func__);
4303                 ret = -ENOMEM;
4304                 goto error_memory_read;
4305         }
4306         client.i2c_buffer_lock = kzalloc(sizeof(struct mutex), GFP_KERNEL);
4307         if (!client.i2c_buffer_lock) {
4308                 dprintk("%s: not enough memory\n", __func__);
4309                 ret = -ENOMEM;
4310                 goto error_memory_lock;
4311         }
4312         mutex_init(client.i2c_buffer_lock);
4313
4314         for (k = no_of_demods - 1; k >= 0; k--) {
4315                 /* designated i2c address */
4316                 new_addr = first_addr + (k << 1);
4317
4318                 client.addr = new_addr;
4319                 if (!is_dib8096p)
4320                         dib8000_i2c_write16(&client, 1287, 0x0003);     /* sram lead in, rdy */
4321                 if (dib8000_identify(&client) == 0) {
4322                         /* sram lead in, rdy */
4323                         if (!is_dib8096p)
4324                                 dib8000_i2c_write16(&client, 1287, 0x0003);
4325                         client.addr = default_addr;
4326                         if (dib8000_identify(&client) == 0) {
4327                                 dprintk("#%d: not identified\n", k);
4328                                 ret  = -EINVAL;
4329                                 goto error;
4330                         }
4331                 }
4332
4333                 /* start diversity to pull_down div_str - just for i2c-enumeration */
4334                 dib8000_i2c_write16(&client, 1286, (1 << 10) | (4 << 6));
4335
4336                 /* set new i2c address and force divstart */
4337                 dib8000_i2c_write16(&client, 1285, (new_addr << 2) | 0x2);
4338                 client.addr = new_addr;
4339                 dib8000_identify(&client);
4340
4341                 dprintk("IC %d initialized (to i2c_address 0x%x)\n", k, new_addr);
4342         }
4343
4344         for (k = 0; k < no_of_demods; k++) {
4345                 new_addr = first_addr | (k << 1);
4346                 client.addr = new_addr;
4347
4348                 // unforce divstr
4349                 dib8000_i2c_write16(&client, 1285, new_addr << 2);
4350
4351                 /* deactivate div - it was just for i2c-enumeration */
4352                 dib8000_i2c_write16(&client, 1286, 0);
4353         }
4354
4355 error:
4356         kfree(client.i2c_buffer_lock);
4357 error_memory_lock:
4358         kfree(client.i2c_read_buffer);
4359 error_memory_read:
4360         kfree(client.i2c_write_buffer);
4361
4362         return ret;
4363 }
4364
4365 static int dib8000_fe_get_tune_settings(struct dvb_frontend *fe, struct dvb_frontend_tune_settings *tune)
4366 {
4367         tune->min_delay_ms = 1000;
4368         tune->step_size = 0;
4369         tune->max_drift = 0;
4370         return 0;
4371 }
4372
4373 static void dib8000_release(struct dvb_frontend *fe)
4374 {
4375         struct dib8000_state *st = fe->demodulator_priv;
4376         u8 index_frontend;
4377
4378         for (index_frontend = 1; (index_frontend < MAX_NUMBER_OF_FRONTENDS) && (st->fe[index_frontend] != NULL); index_frontend++)
4379                 dvb_frontend_detach(st->fe[index_frontend]);
4380
4381         dibx000_exit_i2c_master(&st->i2c_master);
4382         i2c_del_adapter(&st->dib8096p_tuner_adap);
4383         kfree(st->fe[0]);
4384         kfree(st);
4385 }
4386
4387 static struct i2c_adapter *dib8000_get_i2c_master(struct dvb_frontend *fe, enum dibx000_i2c_interface intf, int gating)
4388 {
4389         struct dib8000_state *st = fe->demodulator_priv;
4390         return dibx000_get_i2c_adapter(&st->i2c_master, intf, gating);
4391 }
4392
4393 static int dib8000_pid_filter_ctrl(struct dvb_frontend *fe, u8 onoff)
4394 {
4395         struct dib8000_state *st = fe->demodulator_priv;
4396         u16 val = dib8000_read_word(st, 299) & 0xffef;
4397         val |= (onoff & 0x1) << 4;
4398
4399         dprintk("pid filter enabled %d\n", onoff);
4400         return dib8000_write_word(st, 299, val);
4401 }
4402
4403 static int dib8000_pid_filter(struct dvb_frontend *fe, u8 id, u16 pid, u8 onoff)
4404 {
4405         struct dib8000_state *st = fe->demodulator_priv;
4406         dprintk("Index %x, PID %d, OnOff %d\n", id, pid, onoff);
4407         return dib8000_write_word(st, 305 + id, onoff ? (1 << 13) | pid : 0);
4408 }
4409
4410 static const struct dvb_frontend_ops dib8000_ops = {
4411         .delsys = { SYS_ISDBT },
4412         .info = {
4413                  .name = "DiBcom 8000 ISDB-T",
4414                  .frequency_min_hz =  44250 * kHz,
4415                  .frequency_max_hz = 867250 * kHz,
4416                  .frequency_stepsize_hz = 62500,
4417                  .caps = FE_CAN_INVERSION_AUTO |
4418                  FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
4419                  FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
4420                  FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO |
4421                  FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_GUARD_INTERVAL_AUTO | FE_CAN_RECOVER | FE_CAN_HIERARCHY_AUTO,
4422                  },
4423
4424         .release = dib8000_release,
4425
4426         .init = dib8000_wakeup,
4427         .sleep = dib8000_sleep,
4428
4429         .set_frontend = dib8000_set_frontend,
4430         .get_tune_settings = dib8000_fe_get_tune_settings,
4431         .get_frontend = dib8000_get_frontend,
4432
4433         .read_status = dib8000_read_status,
4434         .read_ber = dib8000_read_ber,
4435         .read_signal_strength = dib8000_read_signal_strength,
4436         .read_snr = dib8000_read_snr,
4437         .read_ucblocks = dib8000_read_unc_blocks,
4438 };
4439
4440 static struct dvb_frontend *dib8000_init(struct i2c_adapter *i2c_adap, u8 i2c_addr, struct dib8000_config *cfg)
4441 {
4442         struct dvb_frontend *fe;
4443         struct dib8000_state *state;
4444
4445         dprintk("dib8000_init\n");
4446
4447         state = kzalloc(sizeof(struct dib8000_state), GFP_KERNEL);
4448         if (state == NULL)
4449                 return NULL;
4450         fe = kzalloc(sizeof(struct dvb_frontend), GFP_KERNEL);
4451         if (fe == NULL)
4452                 goto error;
4453
4454         memcpy(&state->cfg, cfg, sizeof(struct dib8000_config));
4455         state->i2c.adap = i2c_adap;
4456         state->i2c.addr = i2c_addr;
4457         state->i2c.i2c_write_buffer = state->i2c_write_buffer;
4458         state->i2c.i2c_read_buffer = state->i2c_read_buffer;
4459         mutex_init(&state->i2c_buffer_lock);
4460         state->i2c.i2c_buffer_lock = &state->i2c_buffer_lock;
4461         state->gpio_val = cfg->gpio_val;
4462         state->gpio_dir = cfg->gpio_dir;
4463
4464         /* Ensure the output mode remains at the previous default if it's
4465          * not specifically set by the caller.
4466          */
4467         if ((state->cfg.output_mode != OUTMODE_MPEG2_SERIAL) && (state->cfg.output_mode != OUTMODE_MPEG2_PAR_GATED_CLK))
4468                 state->cfg.output_mode = OUTMODE_MPEG2_FIFO;
4469
4470         state->fe[0] = fe;
4471         fe->demodulator_priv = state;
4472         memcpy(&state->fe[0]->ops, &dib8000_ops, sizeof(struct dvb_frontend_ops));
4473
4474         state->timf_default = cfg->pll->timf;
4475
4476         if (dib8000_identify(&state->i2c) == 0) {
4477                 kfree(fe);
4478                 goto error;
4479         }
4480
4481         dibx000_init_i2c_master(&state->i2c_master, DIB8000, state->i2c.adap, state->i2c.addr);
4482
4483         /* init 8096p tuner adapter */
4484         strscpy(state->dib8096p_tuner_adap.name, "DiB8096P tuner interface",
4485                 sizeof(state->dib8096p_tuner_adap.name));
4486         state->dib8096p_tuner_adap.algo = &dib8096p_tuner_xfer_algo;
4487         state->dib8096p_tuner_adap.algo_data = NULL;
4488         state->dib8096p_tuner_adap.dev.parent = state->i2c.adap->dev.parent;
4489         i2c_set_adapdata(&state->dib8096p_tuner_adap, state);
4490         i2c_add_adapter(&state->dib8096p_tuner_adap);
4491
4492         dib8000_reset(fe);
4493
4494         dib8000_write_word(state, 285, (dib8000_read_word(state, 285) & ~0x60) | (3 << 5));     /* ber_rs_len = 3 */
4495         state->current_demod_bw = 6000;
4496
4497         return fe;
4498
4499 error:
4500         kfree(state);
4501         return NULL;
4502 }
4503
4504 void *dib8000_attach(struct dib8000_ops *ops)
4505 {
4506         if (!ops)
4507                 return NULL;
4508
4509         ops->pwm_agc_reset = dib8000_pwm_agc_reset;
4510         ops->get_dc_power = dib8090p_get_dc_power;
4511         ops->set_gpio = dib8000_set_gpio;
4512         ops->get_slave_frontend = dib8000_get_slave_frontend;
4513         ops->set_tune_state = dib8000_set_tune_state;
4514         ops->pid_filter_ctrl = dib8000_pid_filter_ctrl;
4515         ops->get_adc_power = dib8000_get_adc_power;
4516         ops->update_pll = dib8000_update_pll;
4517         ops->tuner_sleep = dib8096p_tuner_sleep;
4518         ops->get_tune_state = dib8000_get_tune_state;
4519         ops->get_i2c_tuner = dib8096p_get_i2c_tuner;
4520         ops->set_slave_frontend = dib8000_set_slave_frontend;
4521         ops->pid_filter = dib8000_pid_filter;
4522         ops->ctrl_timf = dib8000_ctrl_timf;
4523         ops->init = dib8000_init;
4524         ops->get_i2c_master = dib8000_get_i2c_master;
4525         ops->i2c_enumeration = dib8000_i2c_enumeration;
4526         ops->set_wbd_ref = dib8000_set_wbd_ref;
4527
4528         return ops;
4529 }
4530 EXPORT_SYMBOL(dib8000_attach);
4531
4532 MODULE_AUTHOR("Olivier Grenie <Olivier.Grenie@parrot.com, Patrick Boettcher <patrick.boettcher@posteo.de>");
4533 MODULE_DESCRIPTION("Driver for the DiBcom 8000 ISDB-T demodulator");
4534 MODULE_LICENSE("GPL");