drivers/media/dvb/frontends/lgdt3305.c

   1 /*
   2  *    Support for LG Electronics LGDT3304 and LGDT3305 - VSB/QAM
   3  *
   4  *    Copyright (C) 2008, 2009, 2010 Michael Krufky <mkrufky@linuxtv.org>
   5  *
   6  *    LGDT3304 support by Jarod Wilson <jarod@redhat.com>
   7  *
   8  *    This program is free software; you can redistribute it and/or modify
   9  *    it under the terms of the GNU General Public License as published by
  10  *    the Free Software Foundation; either version 2 of the License, or
  11  *    (at your option) any later version.
  12  *
  13  *    This program is distributed in the hope that it will be useful,
  14  *    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *    GNU General Public License for more details.
  17  *
  18  *    You should have received a copy of the GNU General Public License
  19  *    along with this program; if not, write to the Free Software
  20  *    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21  *
  22  */
  23
  24 #include <asm/div64.h>
  25 #include <linux/dvb/frontend.h>
  26 #include <linux/slab.h>
  27 #include "dvb_math.h"
  28 #include "lgdt3305.h"
  29
  30 static int debug;
  31 module_param(debug, int, 0644);
  32 MODULE_PARM_DESC(debug, "set debug level (info=1, reg=2 (or-able))");
  33
  34 #define DBG_INFO 1
  35 #define DBG_REG  2
  36
  37 #define lg_printk(kern, fmt, arg...)                                    \
  38         printk(kern "%s: " fmt, __func__, ##arg)
  39
  40 #define lg_info(fmt, arg...)    printk(KERN_INFO "lgdt3305: " fmt, ##arg)
  41 #define lg_warn(fmt, arg...)    lg_printk(KERN_WARNING,       fmt, ##arg)
  42 #define lg_err(fmt, arg...)     lg_printk(KERN_ERR,           fmt, ##arg)
  43 #define lg_dbg(fmt, arg...) if (debug & DBG_INFO)                       \
  44                                 lg_printk(KERN_DEBUG,         fmt, ##arg)
  45 #define lg_reg(fmt, arg...) if (debug & DBG_REG)                        \
  46                                 lg_printk(KERN_DEBUG,         fmt, ##arg)
  47
  48 #define lg_fail(ret)                                                    \
  49 ({                                                                      \
  50         int __ret;                                                      \
  51         __ret = (ret < 0);                                              \
  52         if (__ret)                                                      \
  53                 lg_err("error %d on line %d\n", ret, __LINE__);         \
  54         __ret;                                                          \
  55 })
  56
  57 struct lgdt3305_state {
  58         struct i2c_adapter *i2c_adap;
  59         const struct lgdt3305_config *cfg;
  60
  61         struct dvb_frontend frontend;
  62
  63         fe_modulation_t current_modulation;
  64         u32 current_frequency;
  65         u32 snr;
  66 };
  67
  68 /* ------------------------------------------------------------------------ */
  69
  70 /* FIXME: verify & document the LGDT3304 registers */
  71
  72 #define LGDT3305_GEN_CTRL_1                   0x0000
  73 #define LGDT3305_GEN_CTRL_2                   0x0001
  74 #define LGDT3305_GEN_CTRL_3                   0x0002
  75 #define LGDT3305_GEN_STATUS                   0x0003
  76 #define LGDT3305_GEN_CONTROL                  0x0007
  77 #define LGDT3305_GEN_CTRL_4                   0x000a
  78 #define LGDT3305_DGTL_AGC_REF_1               0x0012
  79 #define LGDT3305_DGTL_AGC_REF_2               0x0013
  80 #define LGDT3305_CR_CTR_FREQ_1                0x0106
  81 #define LGDT3305_CR_CTR_FREQ_2                0x0107
  82 #define LGDT3305_CR_CTR_FREQ_3                0x0108
  83 #define LGDT3305_CR_CTR_FREQ_4                0x0109
  84 #define LGDT3305_CR_MSE_1                     0x011b
  85 #define LGDT3305_CR_MSE_2                     0x011c
  86 #define LGDT3305_CR_LOCK_STATUS               0x011d
  87 #define LGDT3305_CR_CTRL_7                    0x0126
  88 #define LGDT3305_AGC_POWER_REF_1              0x0300
  89 #define LGDT3305_AGC_POWER_REF_2              0x0301
  90 #define LGDT3305_AGC_DELAY_PT_1               0x0302
  91 #define LGDT3305_AGC_DELAY_PT_2               0x0303
  92 #define LGDT3305_RFAGC_LOOP_FLTR_BW_1         0x0306
  93 #define LGDT3305_RFAGC_LOOP_FLTR_BW_2         0x0307
  94 #define LGDT3305_IFBW_1                       0x0308
  95 #define LGDT3305_IFBW_2                       0x0309
  96 #define LGDT3305_AGC_CTRL_1                   0x030c
  97 #define LGDT3305_AGC_CTRL_4                   0x0314
  98 #define LGDT3305_EQ_MSE_1                     0x0413
  99 #define LGDT3305_EQ_MSE_2                     0x0414
 100 #define LGDT3305_EQ_MSE_3                     0x0415
 101 #define LGDT3305_PT_MSE_1                     0x0417
 102 #define LGDT3305_PT_MSE_2                     0x0418
 103 #define LGDT3305_PT_MSE_3                     0x0419
 104 #define LGDT3305_FEC_BLOCK_CTRL               0x0504
 105 #define LGDT3305_FEC_LOCK_STATUS              0x050a
 106 #define LGDT3305_FEC_PKT_ERR_1                0x050c
 107 #define LGDT3305_FEC_PKT_ERR_2                0x050d
 108 #define LGDT3305_TP_CTRL_1                    0x050e
 109 #define LGDT3305_BERT_PERIOD                  0x0801
 110 #define LGDT3305_BERT_ERROR_COUNT_1           0x080a
 111 #define LGDT3305_BERT_ERROR_COUNT_2           0x080b
 112 #define LGDT3305_BERT_ERROR_COUNT_3           0x080c
 113 #define LGDT3305_BERT_ERROR_COUNT_4           0x080d
 114
 115 static int lgdt3305_write_reg(struct lgdt3305_state *state, u16 reg, u8 val)
 116 {
 117         int ret;
 118         u8 buf[] = { reg >> 8, reg & 0xff, val };
 119         struct i2c_msg msg = {
 120                 .addr = state->cfg->i2c_addr, .flags = 0,
 121                 .buf = buf, .len = 3,
 122         };
 123
 124         lg_reg("reg: 0x%04x, val: 0x%02x\n", reg, val);
 125
 126         ret = i2c_transfer(state->i2c_adap, &msg, 1);
 127
 128         if (ret != 1) {
 129                 lg_err("error (addr %02x %02x <- %02x, err = %i)\n",
 130                        msg.buf[0], msg.buf[1], msg.buf[2], ret);
 131                 if (ret < 0)
 132                         return ret;
 133                 else
 134                         return -EREMOTEIO;
 135         }
 136         return 0;
 137 }
 138
 139 static int lgdt3305_read_reg(struct lgdt3305_state *state, u16 reg, u8 *val)
 140 {
 141         int ret;
 142         u8 reg_buf[] = { reg >> 8, reg & 0xff };
 143         struct i2c_msg msg[] = {
 144                 { .addr = state->cfg->i2c_addr,
 145                   .flags = 0, .buf = reg_buf, .len = 2 },
 146                 { .addr = state->cfg->i2c_addr,
 147                   .flags = I2C_M_RD, .buf = val, .len = 1 },
 148         };
 149
 150         lg_reg("reg: 0x%04x\n", reg);
 151
 152         ret = i2c_transfer(state->i2c_adap, msg, 2);
 153
 154         if (ret != 2) {
 155                 lg_err("error (addr %02x reg %04x error (ret == %i)\n",
 156                        state->cfg->i2c_addr, reg, ret);
 157                 if (ret < 0)
 158                         return ret;
 159                 else
 160                         return -EREMOTEIO;
 161         }
 162         return 0;
 163 }
 164
 165 #define read_reg(state, reg)                                            \
 166 ({                                                                      \
 167         u8 __val;                                                       \
 168         int ret = lgdt3305_read_reg(state, reg, &__val);                \
 169         if (lg_fail(ret))                                               \
 170                 __val = 0;                                              \
 171         __val;                                                          \
 172 })
 173
 174 static int lgdt3305_set_reg_bit(struct lgdt3305_state *state,
 175                                 u16 reg, int bit, int onoff)
 176 {
 177         u8 val;
 178         int ret;
 179
 180         lg_reg("reg: 0x%04x, bit: %d, level: %d\n", reg, bit, onoff);
 181
 182         ret = lgdt3305_read_reg(state, reg, &val);
 183         if (lg_fail(ret))
 184                 goto fail;
 185
 186         val &= ~(1 << bit);
 187         val |= (onoff & 1) << bit;
 188
 189         ret = lgdt3305_write_reg(state, reg, val);
 190 fail:
 191         return ret;
 192 }
 193
 194 struct lgdt3305_reg {
 195         u16 reg;
 196         u8 val;
 197 };
 198
 199 static int lgdt3305_write_regs(struct lgdt3305_state *state,
 200                                struct lgdt3305_reg *regs, int len)
 201 {
 202         int i, ret;
 203
 204         lg_reg("writing %d registers...\n", len);
 205
 206         for (i = 0; i < len - 1; i++) {
 207                 ret = lgdt3305_write_reg(state, regs[i].reg, regs[i].val);
 208                 if (lg_fail(ret))
 209                         return ret;
 210         }
 211         return 0;
 212 }
 213
 214 /* ------------------------------------------------------------------------ */
 215
 216 static int lgdt3305_soft_reset(struct lgdt3305_state *state)
 217 {
 218         int ret;
 219
 220         lg_dbg("\n");
 221
 222         ret = lgdt3305_set_reg_bit(state, LGDT3305_GEN_CTRL_3, 0, 0);
 223         if (lg_fail(ret))
 224                 goto fail;
 225
 226         msleep(20);
 227         ret = lgdt3305_set_reg_bit(state, LGDT3305_GEN_CTRL_3, 0, 1);
 228 fail:
 229         return ret;
 230 }
 231
 232 static inline int lgdt3305_mpeg_mode(struct lgdt3305_state *state,
 233                                      enum lgdt3305_mpeg_mode mode)
 234 {
 235         lg_dbg("(%d)\n", mode);
 236         return lgdt3305_set_reg_bit(state, LGDT3305_TP_CTRL_1, 5, mode);
 237 }
 238
 239 static int lgdt3305_mpeg_mode_polarity(struct lgdt3305_state *state,
 240                                        enum lgdt3305_tp_clock_edge edge,
 241                                        enum lgdt3305_tp_valid_polarity valid)
 242 {
 243         u8 val;
 244         int ret;
 245
 246         lg_dbg("edge = %d, valid = %d\n", edge, valid);
 247
 248         ret = lgdt3305_read_reg(state, LGDT3305_TP_CTRL_1, &val);
 249         if (lg_fail(ret))
 250                 goto fail;
 251
 252         val &= ~0x09;
 253
 254         if (edge)
 255                 val |= 0x08;
 256         if (valid)
 257                 val |= 0x01;
 258
 259         ret = lgdt3305_write_reg(state, LGDT3305_TP_CTRL_1, val);
 260         if (lg_fail(ret))
 261                 goto fail;
 262
 263         ret = lgdt3305_soft_reset(state);
 264 fail:
 265         return ret;
 266 }
 267
 268 static int lgdt3305_set_modulation(struct lgdt3305_state *state,
 269                                    struct dvb_frontend_parameters *param)
 270 {
 271         u8 opermode;
 272         int ret;
 273
 274         lg_dbg("\n");
 275
 276         ret = lgdt3305_read_reg(state, LGDT3305_GEN_CTRL_1, &opermode);
 277         if (lg_fail(ret))
 278                 goto fail;
 279
 280         opermode &= ~0x03;
 281
 282         switch (param->u.vsb.modulation) {
 283         case VSB_8:
 284                 opermode |= 0x03;
 285                 break;
 286         case QAM_64:
 287                 opermode |= 0x00;
 288                 break;
 289         case QAM_256:
 290                 opermode |= 0x01;
 291                 break;
 292         default:
 293                 return -EINVAL;
 294         }
 295         ret = lgdt3305_write_reg(state, LGDT3305_GEN_CTRL_1, opermode);
 296 fail:
 297         return ret;
 298 }
 299
 300 static int lgdt3305_set_filter_extension(struct lgdt3305_state *state,
 301                                          struct dvb_frontend_parameters *param)
 302 {
 303         int val;
 304
 305         switch (param->u.vsb.modulation) {
 306         case VSB_8:
 307                 val = 0;
 308                 break;
 309         case QAM_64:
 310         case QAM_256:
 311                 val = 1;
 312                 break;
 313         default:
 314                 return -EINVAL;
 315         }
 316         lg_dbg("val = %d\n", val);
 317
 318         return lgdt3305_set_reg_bit(state, 0x043f, 2, val);
 319 }
 320
 321 /* ------------------------------------------------------------------------ */
 322
 323 static int lgdt3305_passband_digital_agc(struct lgdt3305_state *state,
 324                                          struct dvb_frontend_parameters *param)
 325 {
 326         u16 agc_ref;
 327
 328         switch (param->u.vsb.modulation) {
 329         case VSB_8:
 330                 agc_ref = 0x32c4;
 331                 break;
 332         case QAM_64:
 333                 agc_ref = 0x2a00;
 334                 break;
 335         case QAM_256:
 336                 agc_ref = 0x2a80;
 337                 break;
 338         default:
 339                 return -EINVAL;
 340         }
 341
 342         lg_dbg("agc ref: 0x%04x\n", agc_ref);
 343
 344         lgdt3305_write_reg(state, LGDT3305_DGTL_AGC_REF_1, agc_ref >> 8);
 345         lgdt3305_write_reg(state, LGDT3305_DGTL_AGC_REF_2, agc_ref & 0xff);
 346
 347         return 0;
 348 }
 349
 350 static int lgdt3305_rfagc_loop(struct lgdt3305_state *state,
 351                                struct dvb_frontend_parameters *param)
 352 {
 353         u16 ifbw, rfbw, agcdelay;
 354
 355         switch (param->u.vsb.modulation) {
 356         case VSB_8:
 357                 agcdelay = 0x04c0;
 358                 rfbw     = 0x8000;
 359                 ifbw     = 0x8000;
 360                 break;
 361         case QAM_64:
 362         case QAM_256:
 363                 agcdelay = 0x046b;
 364                 rfbw     = 0x8889;
 365                 /* FIXME: investigate optimal ifbw & rfbw values for the
 366                  *        DT3304 and re-write this switch..case block */
 367                 if (state->cfg->demod_chip == LGDT3304)
 368                         ifbw = 0x6666;
 369                 else /* (state->cfg->demod_chip == LGDT3305) */
 370                         ifbw = 0x8888;
 371                 break;
 372         default:
 373                 return -EINVAL;
 374         }
 375
 376         if (state->cfg->rf_agc_loop) {
 377                 lg_dbg("agcdelay: 0x%04x, rfbw: 0x%04x\n", agcdelay, rfbw);
 378
 379                 /* rf agc loop filter bandwidth */
 380                 lgdt3305_write_reg(state, LGDT3305_AGC_DELAY_PT_1,
 381                                    agcdelay >> 8);
 382                 lgdt3305_write_reg(state, LGDT3305_AGC_DELAY_PT_2,
 383                                    agcdelay & 0xff);
 384
 385                 lgdt3305_write_reg(state, LGDT3305_RFAGC_LOOP_FLTR_BW_1,
 386                                    rfbw >> 8);
 387                 lgdt3305_write_reg(state, LGDT3305_RFAGC_LOOP_FLTR_BW_2,
 388                                    rfbw & 0xff);
 389         } else {
 390                 lg_dbg("ifbw: 0x%04x\n", ifbw);
 391
 392                 /* if agc loop filter bandwidth */
 393                 lgdt3305_write_reg(state, LGDT3305_IFBW_1, ifbw >> 8);
 394                 lgdt3305_write_reg(state, LGDT3305_IFBW_2, ifbw & 0xff);
 395         }
 396
 397         return 0;
 398 }
 399
 400 static int lgdt3305_agc_setup(struct lgdt3305_state *state,
 401                               struct dvb_frontend_parameters *param)
 402 {
 403         int lockdten, acqen;
 404
 405         switch (param->u.vsb.modulation) {
 406         case VSB_8:
 407                 lockdten = 0;
 408                 acqen = 0;
 409                 break;
 410         case QAM_64:
 411         case QAM_256:
 412                 lockdten = 1;
 413                 acqen = 1;
 414                 break;
 415         default:
 416                 return -EINVAL;
 417         }
 418
 419         lg_dbg("lockdten = %d, acqen = %d\n", lockdten, acqen);
 420
 421         /* control agc function */
 422         switch (state->cfg->demod_chip) {
 423         case LGDT3304:
 424                 lgdt3305_write_reg(state, 0x0314, 0xe1 | lockdten << 1);
 425                 lgdt3305_set_reg_bit(state, 0x030e, 2, acqen);
 426                 break;
 427         case LGDT3305:
 428                 lgdt3305_write_reg(state, LGDT3305_AGC_CTRL_4, 0xe1 | lockdten << 1);
 429                 lgdt3305_set_reg_bit(state, LGDT3305_AGC_CTRL_1, 2, acqen);
 430                 break;
 431         default:
 432                 return -EINVAL;
 433         }
 434
 435         return lgdt3305_rfagc_loop(state, param);
 436 }
 437
 438 static int lgdt3305_set_agc_power_ref(struct lgdt3305_state *state,
 439                                       struct dvb_frontend_parameters *param)
 440 {
 441         u16 usref = 0;
 442
 443         switch (param->u.vsb.modulation) {
 444         case VSB_8:
 445                 if (state->cfg->usref_8vsb)
 446                         usref = state->cfg->usref_8vsb;
 447                 break;
 448         case QAM_64:
 449                 if (state->cfg->usref_qam64)
 450                         usref = state->cfg->usref_qam64;
 451                 break;
 452         case QAM_256:
 453                 if (state->cfg->usref_qam256)
 454                         usref = state->cfg->usref_qam256;
 455                 break;
 456         default:
 457                 return -EINVAL;
 458         }
 459
 460         if (usref) {
 461                 lg_dbg("set manual mode: 0x%04x\n", usref);
 462
 463                 lgdt3305_set_reg_bit(state, LGDT3305_AGC_CTRL_1, 3, 1);
 464
 465                 lgdt3305_write_reg(state, LGDT3305_AGC_POWER_REF_1,
 466                                    0xff & (usref >> 8));
 467                 lgdt3305_write_reg(state, LGDT3305_AGC_POWER_REF_2,
 468                                    0xff & (usref >> 0));
 469         }
 470         return 0;
 471 }
 472
 473 /* ------------------------------------------------------------------------ */
 474
 475 static int lgdt3305_spectral_inversion(struct lgdt3305_state *state,
 476                                        struct dvb_frontend_parameters *param,
 477                                        int inversion)
 478 {
 479         int ret;
 480
 481         lg_dbg("(%d)\n", inversion);
 482
 483         switch (param->u.vsb.modulation) {
 484         case VSB_8:
 485                 ret = lgdt3305_write_reg(state, LGDT3305_CR_CTRL_7,
 486                                          inversion ? 0xf9 : 0x79);
 487                 break;
 488         case QAM_64:
 489         case QAM_256:
 490                 ret = lgdt3305_write_reg(state, LGDT3305_FEC_BLOCK_CTRL,
 491                                          inversion ? 0xfd : 0xff);
 492                 break;
 493         default:
 494                 ret = -EINVAL;
 495         }
 496         return ret;
 497 }
 498
 499 static int lgdt3305_set_if(struct lgdt3305_state *state,
 500                            struct dvb_frontend_parameters *param)
 501 {
 502         u16 if_freq_khz;
 503         u8 nco1, nco2, nco3, nco4;
 504         u64 nco;
 505
 506         switch (param->u.vsb.modulation) {
 507         case VSB_8:
 508                 if_freq_khz = state->cfg->vsb_if_khz;
 509                 break;
 510         case QAM_64:
 511         case QAM_256:
 512                 if_freq_khz = state->cfg->qam_if_khz;
 513                 break;
 514         default:
 515                 return -EINVAL;
 516         }
 517
 518         nco = if_freq_khz / 10;
 519
 520         switch (param->u.vsb.modulation) {
 521         case VSB_8:
 522                 nco <<= 24;
 523                 do_div(nco, 625);
 524                 break;
 525         case QAM_64:
 526         case QAM_256:
 527                 nco <<= 28;
 528                 do_div(nco, 625);
 529                 break;
 530         default:
 531                 return -EINVAL;
 532         }
 533
 534         nco1 = (nco >> 24) & 0x3f;
 535         nco1 |= 0x40;
 536         nco2 = (nco >> 16) & 0xff;
 537         nco3 = (nco >> 8) & 0xff;
 538         nco4 = nco & 0xff;
 539
 540         lgdt3305_write_reg(state, LGDT3305_CR_CTR_FREQ_1, nco1);
 541         lgdt3305_write_reg(state, LGDT3305_CR_CTR_FREQ_2, nco2);
 542         lgdt3305_write_reg(state, LGDT3305_CR_CTR_FREQ_3, nco3);
 543         lgdt3305_write_reg(state, LGDT3305_CR_CTR_FREQ_4, nco4);
 544
 545         lg_dbg("%d KHz -> [%02x%02x%02x%02x]\n",
 546                if_freq_khz, nco1, nco2, nco3, nco4);
 547
 548         return 0;
 549 }
 550
 551 /* ------------------------------------------------------------------------ */
 552
 553 static int lgdt3305_i2c_gate_ctrl(struct dvb_frontend *fe, int enable)
 554 {
 555         struct lgdt3305_state *state = fe->demodulator_priv;
 556
 557         if (state->cfg->deny_i2c_rptr)
 558                 return 0;
 559
 560         lg_dbg("(%d)\n", enable);
 561
 562         return lgdt3305_set_reg_bit(state, LGDT3305_GEN_CTRL_2, 5,
 563                                     enable ? 0 : 1);
 564 }
 565
 566 static int lgdt3305_sleep(struct dvb_frontend *fe)
 567 {
 568         struct lgdt3305_state *state = fe->demodulator_priv;
 569         u8 gen_ctrl_3, gen_ctrl_4;
 570
 571         lg_dbg("\n");
 572
 573         gen_ctrl_3 = read_reg(state, LGDT3305_GEN_CTRL_3);
 574         gen_ctrl_4 = read_reg(state, LGDT3305_GEN_CTRL_4);
 575
 576         /* hold in software reset while sleeping */
 577         gen_ctrl_3 &= ~0x01;
 578         /* tristate the IF-AGC pin */
 579         gen_ctrl_3 |=  0x02;
 580         /* tristate the RF-AGC pin */
 581         gen_ctrl_3 |=  0x04;
 582
 583         /* disable vsb/qam module */
 584         gen_ctrl_4 &= ~0x01;
 585         /* disable adc module */
 586         gen_ctrl_4 &= ~0x02;
 587
 588         lgdt3305_write_reg(state, LGDT3305_GEN_CTRL_3, gen_ctrl_3);
 589         lgdt3305_write_reg(state, LGDT3305_GEN_CTRL_4, gen_ctrl_4);
 590
 591         return 0;
 592 }
 593
 594 static int lgdt3305_init(struct dvb_frontend *fe)
 595 {
 596         struct lgdt3305_state *state = fe->demodulator_priv;
 597         int ret;
 598
 599         static struct lgdt3305_reg lgdt3304_init_data[] = {
 600                 { .reg = LGDT3305_GEN_CTRL_1,           .val = 0x03, },
 601                 { .reg = 0x000d,                        .val = 0x02, },
 602                 { .reg = 0x000e,                        .val = 0x02, },
 603                 { .reg = LGDT3305_DGTL_AGC_REF_1,       .val = 0x32, },
 604                 { .reg = LGDT3305_DGTL_AGC_REF_2,       .val = 0xc4, },
 605                 { .reg = LGDT3305_CR_CTR_FREQ_1,        .val = 0x00, },
 606                 { .reg = LGDT3305_CR_CTR_FREQ_2,        .val = 0x00, },
 607                 { .reg = LGDT3305_CR_CTR_FREQ_3,        .val = 0x00, },
 608                 { .reg = LGDT3305_CR_CTR_FREQ_4,        .val = 0x00, },
 609                 { .reg = LGDT3305_CR_CTRL_7,            .val = 0xf9, },
 610                 { .reg = 0x0112,                        .val = 0x17, },
 611                 { .reg = 0x0113,                        .val = 0x15, },
 612                 { .reg = 0x0114,                        .val = 0x18, },
 613                 { .reg = 0x0115,                        .val = 0xff, },
 614                 { .reg = 0x0116,                        .val = 0x3c, },
 615                 { .reg = 0x0214,                        .val = 0x67, },
 616                 { .reg = 0x0424,                        .val = 0x8d, },
 617                 { .reg = 0x0427,                        .val = 0x12, },
 618                 { .reg = 0x0428,                        .val = 0x4f, },
 619                 { .reg = LGDT3305_IFBW_1,               .val = 0x80, },
 620                 { .reg = LGDT3305_IFBW_2,               .val = 0x00, },
 621                 { .reg = 0x030a,                        .val = 0x08, },
 622                 { .reg = 0x030b,                        .val = 0x9b, },
 623                 { .reg = 0x030d,                        .val = 0x00, },
 624                 { .reg = 0x030e,                        .val = 0x1c, },
 625                 { .reg = 0x0314,                        .val = 0xe1, },
 626                 { .reg = 0x000d,                        .val = 0x82, },
 627                 { .reg = LGDT3305_TP_CTRL_1,            .val = 0x5b, },
 628                 { .reg = LGDT3305_TP_CTRL_1,            .val = 0x5b, },
 629         };
 630
 631         static struct lgdt3305_reg lgdt3305_init_data[] = {
 632                 { .reg = LGDT3305_GEN_CTRL_1,           .val = 0x03, },
 633                 { .reg = LGDT3305_GEN_CTRL_2,           .val = 0xb0, },
 634                 { .reg = LGDT3305_GEN_CTRL_3,           .val = 0x01, },
 635                 { .reg = LGDT3305_GEN_CONTROL,          .val = 0x6f, },
 636                 { .reg = LGDT3305_GEN_CTRL_4,           .val = 0x03, },
 637                 { .reg = LGDT3305_DGTL_AGC_REF_1,       .val = 0x32, },
 638                 { .reg = LGDT3305_DGTL_AGC_REF_2,       .val = 0xc4, },
 639                 { .reg = LGDT3305_CR_CTR_FREQ_1,        .val = 0x00, },
 640                 { .reg = LGDT3305_CR_CTR_FREQ_2,        .val = 0x00, },
 641                 { .reg = LGDT3305_CR_CTR_FREQ_3,        .val = 0x00, },
 642                 { .reg = LGDT3305_CR_CTR_FREQ_4,        .val = 0x00, },
 643                 { .reg = LGDT3305_CR_CTRL_7,            .val = 0x79, },
 644                 { .reg = LGDT3305_AGC_POWER_REF_1,      .val = 0x32, },
 645                 { .reg = LGDT3305_AGC_POWER_REF_2,      .val = 0xc4, },
 646                 { .reg = LGDT3305_AGC_DELAY_PT_1,       .val = 0x0d, },
 647                 { .reg = LGDT3305_AGC_DELAY_PT_2,       .val = 0x30, },
 648                 { .reg = LGDT3305_RFAGC_LOOP_FLTR_BW_1, .val = 0x80, },
 649                 { .reg = LGDT3305_RFAGC_LOOP_FLTR_BW_2, .val = 0x00, },
 650                 { .reg = LGDT3305_IFBW_1,               .val = 0x80, },
 651                 { .reg = LGDT3305_IFBW_2,               .val = 0x00, },
 652                 { .reg = LGDT3305_AGC_CTRL_1,           .val = 0x30, },
 653                 { .reg = LGDT3305_AGC_CTRL_4,           .val = 0x61, },
 654                 { .reg = LGDT3305_FEC_BLOCK_CTRL,       .val = 0xff, },
 655                 { .reg = LGDT3305_TP_CTRL_1,            .val = 0x1b, },
 656         };
 657
 658         lg_dbg("\n");
 659
 660         switch (state->cfg->demod_chip) {
 661         case LGDT3304:
 662                 ret = lgdt3305_write_regs(state, lgdt3304_init_data,
 663                                           ARRAY_SIZE(lgdt3304_init_data));
 664                 break;
 665         case LGDT3305:
 666                 ret = lgdt3305_write_regs(state, lgdt3305_init_data,
 667                                           ARRAY_SIZE(lgdt3305_init_data));
 668                 break;
 669         default:
 670                 ret = -EINVAL;
 671         }
 672         if (lg_fail(ret))
 673                 goto fail;
 674
 675         ret = lgdt3305_soft_reset(state);
 676 fail:
 677         return ret;
 678 }
 679
 680 static int lgdt3304_set_parameters(struct dvb_frontend *fe,
 681                                    struct dvb_frontend_parameters *param)
 682 {
 683         struct lgdt3305_state *state = fe->demodulator_priv;
 684         int ret;
 685
 686         lg_dbg("(%d, %d)\n", param->frequency, param->u.vsb.modulation);
 687
 688         if (fe->ops.tuner_ops.set_params) {
 689                 ret = fe->ops.tuner_ops.set_params(fe, param);
 690                 if (fe->ops.i2c_gate_ctrl)
 691                         fe->ops.i2c_gate_ctrl(fe, 0);
 692                 if (lg_fail(ret))
 693                         goto fail;
 694                 state->current_frequency = param->frequency;
 695         }
 696
 697         ret = lgdt3305_set_modulation(state, param);
 698         if (lg_fail(ret))
 699                 goto fail;
 700
 701         ret = lgdt3305_passband_digital_agc(state, param);
 702         if (lg_fail(ret))
 703                 goto fail;
 704
 705         ret = lgdt3305_agc_setup(state, param);
 706         if (lg_fail(ret))
 707                 goto fail;
 708
 709         /* reg 0x030d is 3304-only... seen in vsb and qam usbsnoops... */
 710         switch (param->u.vsb.modulation) {
 711         case VSB_8:
 712                 lgdt3305_write_reg(state, 0x030d, 0x00);
 713                 lgdt3305_write_reg(state, LGDT3305_CR_CTR_FREQ_1, 0x4f);
 714                 lgdt3305_write_reg(state, LGDT3305_CR_CTR_FREQ_2, 0x0c);
 715                 lgdt3305_write_reg(state, LGDT3305_CR_CTR_FREQ_3, 0xac);
 716                 lgdt3305_write_reg(state, LGDT3305_CR_CTR_FREQ_4, 0xba);
 717                 break;
 718         case QAM_64:
 719         case QAM_256:
 720                 lgdt3305_write_reg(state, 0x030d, 0x14);
 721                 ret = lgdt3305_set_if(state, param);
 722                 if (lg_fail(ret))
 723                         goto fail;
 724                 break;
 725         default:
 726                 return -EINVAL;
 727         }
 728
 729
 730         ret = lgdt3305_spectral_inversion(state, param,
 731                                           state->cfg->spectral_inversion
 732                                           ? 1 : 0);
 733         if (lg_fail(ret))
 734                 goto fail;
 735
 736         state->current_modulation = param->u.vsb.modulation;
 737
 738         ret = lgdt3305_mpeg_mode(state, state->cfg->mpeg_mode);
 739         if (lg_fail(ret))
 740                 goto fail;
 741
 742         /* lgdt3305_mpeg_mode_polarity calls lgdt3305_soft_reset */
 743         ret = lgdt3305_mpeg_mode_polarity(state,
 744                                           state->cfg->tpclk_edge,
 745                                           state->cfg->tpvalid_polarity);
 746 fail:
 747         return ret;
 748 }
 749
 750 static int lgdt3305_set_parameters(struct dvb_frontend *fe,
 751                                    struct dvb_frontend_parameters *param)
 752 {
 753         struct lgdt3305_state *state = fe->demodulator_priv;
 754         int ret;
 755
 756         lg_dbg("(%d, %d)\n", param->frequency, param->u.vsb.modulation);
 757
 758         if (fe->ops.tuner_ops.set_params) {
 759                 ret = fe->ops.tuner_ops.set_params(fe, param);
 760                 if (fe->ops.i2c_gate_ctrl)
 761                         fe->ops.i2c_gate_ctrl(fe, 0);
 762                 if (lg_fail(ret))
 763                         goto fail;
 764                 state->current_frequency = param->frequency;
 765         }
 766
 767         ret = lgdt3305_set_modulation(state, param);
 768         if (lg_fail(ret))
 769                 goto fail;
 770
 771         ret = lgdt3305_passband_digital_agc(state, param);
 772         if (lg_fail(ret))
 773                 goto fail;
 774         ret = lgdt3305_set_agc_power_ref(state, param);
 775         if (lg_fail(ret))
 776                 goto fail;
 777         ret = lgdt3305_agc_setup(state, param);
 778         if (lg_fail(ret))
 779                 goto fail;
 780
 781         /* low if */
 782         ret = lgdt3305_write_reg(state, LGDT3305_GEN_CONTROL, 0x2f);
 783         if (lg_fail(ret))
 784                 goto fail;
 785         ret = lgdt3305_set_reg_bit(state, LGDT3305_CR_CTR_FREQ_1, 6, 1);
 786         if (lg_fail(ret))
 787                 goto fail;
 788
 789         ret = lgdt3305_set_if(state, param);
 790         if (lg_fail(ret))
 791                 goto fail;
 792         ret = lgdt3305_spectral_inversion(state, param,
 793                                           state->cfg->spectral_inversion
 794                                           ? 1 : 0);
 795         if (lg_fail(ret))
 796                 goto fail;
 797
 798         ret = lgdt3305_set_filter_extension(state, param);
 799         if (lg_fail(ret))
 800                 goto fail;
 801
 802         state->current_modulation = param->u.vsb.modulation;
 803
 804         ret = lgdt3305_mpeg_mode(state, state->cfg->mpeg_mode);
 805         if (lg_fail(ret))
 806                 goto fail;
 807
 808         /* lgdt3305_mpeg_mode_polarity calls lgdt3305_soft_reset */
 809         ret = lgdt3305_mpeg_mode_polarity(state,
 810                                           state->cfg->tpclk_edge,
 811                                           state->cfg->tpvalid_polarity);
 812 fail:
 813         return ret;
 814 }
 815
 816 static int lgdt3305_get_frontend(struct dvb_frontend *fe,
 817                                  struct dvb_frontend_parameters *param)
 818 {
 819         struct lgdt3305_state *state = fe->demodulator_priv;
 820
 821         lg_dbg("\n");
 822
 823         param->u.vsb.modulation = state->current_modulation;
 824         param->frequency = state->current_frequency;
 825         return 0;
 826 }
 827
 828 /* ------------------------------------------------------------------------ */
 829
 830 static int lgdt3305_read_cr_lock_status(struct lgdt3305_state *state,
 831                                         int *locked)
 832 {
 833         u8 val;
 834         int ret;
 835         char *cr_lock_state = "";
 836
 837         *locked = 0;
 838
 839         ret = lgdt3305_read_reg(state, LGDT3305_CR_LOCK_STATUS, &val);
 840         if (lg_fail(ret))
 841                 goto fail;
 842
 843         switch (state->current_modulation) {
 844         case QAM_256:
 845         case QAM_64:
 846                 if (val & (1 << 1))
 847                         *locked = 1;
 848
 849                 switch (val & 0x07) {
 850                 case 0:
 851                         cr_lock_state = "QAM UNLOCK";
 852                         break;
 853                 case 4:
 854                         cr_lock_state = "QAM 1stLock";
 855                         break;
 856                 case 6:
 857                         cr_lock_state = "QAM 2ndLock";
 858                         break;
 859                 case 7:
 860                         cr_lock_state = "QAM FinalLock";
 861                         break;
 862                 default:
 863                         cr_lock_state = "CLOCKQAM-INVALID!";
 864                         break;
 865                 }
 866                 break;
 867         case VSB_8:
 868                 if (val & (1 << 7)) {
 869                         *locked = 1;
 870                         cr_lock_state = "CLOCKVSB";
 871                 }
 872                 break;
 873         default:
 874                 ret = -EINVAL;
 875         }
 876         lg_dbg("(%d) %s\n", *locked, cr_lock_state);
 877 fail:
 878         return ret;
 879 }
 880
 881 static int lgdt3305_read_fec_lock_status(struct lgdt3305_state *state,
 882                                          int *locked)
 883 {
 884         u8 val;
 885         int ret, mpeg_lock, fec_lock, viterbi_lock;
 886
 887         *locked = 0;
 888
 889         switch (state->current_modulation) {
 890         case QAM_256:
 891         case QAM_64:
 892                 ret = lgdt3305_read_reg(state,
 893                                         LGDT3305_FEC_LOCK_STATUS, &val);
 894                 if (lg_fail(ret))
 895                         goto fail;
 896
 897                 mpeg_lock    = (val & (1 << 0)) ? 1 : 0;
 898                 fec_lock     = (val & (1 << 2)) ? 1 : 0;
 899                 viterbi_lock = (val & (1 << 3)) ? 1 : 0;
 900
 901                 *locked = mpeg_lock && fec_lock && viterbi_lock;
 902
 903                 lg_dbg("(%d) %s%s%s\n", *locked,
 904                        mpeg_lock    ? "mpeg lock  "  : "",
 905                        fec_lock     ? "fec lock  "   : "",
 906                        viterbi_lock ? "viterbi lock" : "");
 907                 break;
 908         case VSB_8:
 909         default:
 910                 ret = -EINVAL;
 911         }
 912 fail:
 913         return ret;
 914 }
 915
 916 static int lgdt3305_read_status(struct dvb_frontend *fe, fe_status_t *status)
 917 {
 918         struct lgdt3305_state *state = fe->demodulator_priv;
 919         u8 val;
 920         int ret, signal, inlock, nofecerr, snrgood,
 921                 cr_lock, fec_lock, sync_lock;
 922
 923         *status = 0;
 924
 925         ret = lgdt3305_read_reg(state, LGDT3305_GEN_STATUS, &val);
 926         if (lg_fail(ret))
 927                 goto fail;
 928
 929         signal    = (val & (1 << 4)) ? 1 : 0;
 930         inlock    = (val & (1 << 3)) ? 0 : 1;
 931         sync_lock = (val & (1 << 2)) ? 1 : 0;
 932         nofecerr  = (val & (1 << 1)) ? 1 : 0;
 933         snrgood   = (val & (1 << 0)) ? 1 : 0;
 934
 935         lg_dbg("%s%s%s%s%s\n",
 936                signal    ? "SIGNALEXIST " : "",
 937                inlock    ? "INLOCK "      : "",
 938                sync_lock ? "SYNCLOCK "    : "",
 939                nofecerr  ? "NOFECERR "    : "",
 940                snrgood   ? "SNRGOOD "     : "");
 941
 942         ret = lgdt3305_read_cr_lock_status(state, &cr_lock);
 943         if (lg_fail(ret))
 944                 goto fail;
 945
 946         if (signal)
 947                 *status |= FE_HAS_SIGNAL;
 948         if (cr_lock)
 949                 *status |= FE_HAS_CARRIER;
 950         if (nofecerr)
 951                 *status |= FE_HAS_VITERBI;
 952         if (sync_lock)
 953                 *status |= FE_HAS_SYNC;
 954
 955         switch (state->current_modulation) {
 956         case QAM_256:
 957         case QAM_64:
 958                 /* signal bit is unreliable on the DT3304 in QAM mode */
 959                 if (((LGDT3304 == state->cfg->demod_chip)) && (cr_lock))
 960                         *status |= FE_HAS_SIGNAL;
 961
 962                 ret = lgdt3305_read_fec_lock_status(state, &fec_lock);
 963                 if (lg_fail(ret))
 964                         goto fail;
 965
 966                 if (fec_lock)
 967                         *status |= FE_HAS_LOCK;
 968                 break;
 969         case VSB_8:
 970                 if (inlock)
 971                         *status |= FE_HAS_LOCK;
 972                 break;
 973         default:
 974                 ret = -EINVAL;
 975         }
 976 fail:
 977         return ret;
 978 }
 979
 980 /* ------------------------------------------------------------------------ */
 981
 982 /* borrowed from lgdt330x.c */
 983 static u32 calculate_snr(u32 mse, u32 c)
 984 {
 985         if (mse == 0) /* no signal */
 986                 return 0;
 987
 988         mse = intlog10(mse);
 989         if (mse > c) {
 990                 /* Negative SNR, which is possible, but realisticly the
 991                 demod will lose lock before the signal gets this bad.  The
 992                 API only allows for unsigned values, so just return 0 */
 993                 return 0;
 994         }
 995         return 10*(c - mse);
 996 }
 997
 998 static int lgdt3305_read_snr(struct dvb_frontend *fe, u16 *snr)
 999 {
1000         struct lgdt3305_state *state = fe->demodulator_priv;
1001         u32 noise;      /* noise value */
1002         u32 c;          /* per-modulation SNR calculation constant */
1003
1004         switch (state->current_modulation) {
1005         case VSB_8:
1006 #ifdef USE_PTMSE
1007                 /* Use Phase Tracker Mean-Square Error Register */
1008                 /* SNR for ranges from -13.11 to +44.08 */
1009                 noise = ((read_reg(state, LGDT3305_PT_MSE_1) & 0x07) << 16) |
1010                         (read_reg(state, LGDT3305_PT_MSE_2) << 8) |
1011                         (read_reg(state, LGDT3305_PT_MSE_3) & 0xff);
1012                 c = 73957994; /* log10(25*32^2)*2^24 */
1013 #else
1014                 /* Use Equalizer Mean-Square Error Register */
1015                 /* SNR for ranges from -16.12 to +44.08 */
1016                 noise = ((read_reg(state, LGDT3305_EQ_MSE_1) & 0x0f) << 16) |
1017                         (read_reg(state, LGDT3305_EQ_MSE_2) << 8) |
1018                         (read_reg(state, LGDT3305_EQ_MSE_3) & 0xff);
1019                 c = 73957994; /* log10(25*32^2)*2^24 */
1020 #endif
1021                 break;
1022         case QAM_64:
1023         case QAM_256:
1024                 noise = (read_reg(state, LGDT3305_CR_MSE_1) << 8) |
1025                         (read_reg(state, LGDT3305_CR_MSE_2) & 0xff);
1026
1027                 c = (state->current_modulation == QAM_64) ?
1028                         97939837 : 98026066;
1029                 /* log10(688128)*2^24 and log10(696320)*2^24 */
1030                 break;
1031         default:
1032                 return -EINVAL;
1033         }
1034         state->snr = calculate_snr(noise, c);
1035         /* report SNR in dB * 10 */
1036         *snr = (state->snr / ((1 << 24) / 10));
1037         lg_dbg("noise = 0x%08x, snr = %d.%02d dB\n", noise,
1038                state->snr >> 24, (((state->snr >> 8) & 0xffff) * 100) >> 16);
1039
1040         return 0;
1041 }
1042
1043 static int lgdt3305_read_signal_strength(struct dvb_frontend *fe,
1044                                          u16 *strength)
1045 {
1046         /* borrowed from lgdt330x.c
1047          *
1048          * Calculate strength from SNR up to 35dB
1049          * Even though the SNR can go higher than 35dB,
1050          * there is some comfort factor in having a range of
1051          * strong signals that can show at 100%
1052          */
1053         struct lgdt3305_state *state = fe->demodulator_priv;
1054         u16 snr;
1055         int ret;
1056
1057         *strength = 0;
1058
1059         ret = fe->ops.read_snr(fe, &snr);
1060         if (lg_fail(ret))
1061                 goto fail;
1062         /* Rather than use the 8.8 value snr, use state->snr which is 8.24 */
1063         /* scale the range 0 - 35*2^24 into 0 - 65535 */
1064         if (state->snr >= 8960 * 0x10000)
1065                 *strength = 0xffff;
1066         else
1067                 *strength = state->snr / 8960;
1068 fail:
1069         return ret;
1070 }
1071
1072 /* ------------------------------------------------------------------------ */
1073
1074 static int lgdt3305_read_ber(struct dvb_frontend *fe, u32 *ber)
1075 {
1076         *ber = 0;
1077         return 0;
1078 }
1079
1080 static int lgdt3305_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
1081 {
1082         struct lgdt3305_state *state = fe->demodulator_priv;
1083
1084         *ucblocks =
1085                 (read_reg(state, LGDT3305_FEC_PKT_ERR_1) << 8) |
1086                 (read_reg(state, LGDT3305_FEC_PKT_ERR_2) & 0xff);
1087
1088         return 0;
1089 }
1090
1091 static int lgdt3305_get_tune_settings(struct dvb_frontend *fe,
1092                                       struct dvb_frontend_tune_settings
1093                                         *fe_tune_settings)
1094 {
1095         fe_tune_settings->min_delay_ms = 500;
1096         lg_dbg("\n");
1097         return 0;
1098 }
1099
1100 static void lgdt3305_release(struct dvb_frontend *fe)
1101 {
1102         struct lgdt3305_state *state = fe->demodulator_priv;
1103         lg_dbg("\n");
1104         kfree(state);
1105 }
1106
1107 static struct dvb_frontend_ops lgdt3304_ops;
1108 static struct dvb_frontend_ops lgdt3305_ops;
1109
1110 struct dvb_frontend *lgdt3305_attach(const struct lgdt3305_config *config,
1111                                      struct i2c_adapter *i2c_adap)
1112 {
1113         struct lgdt3305_state *state = NULL;
1114         int ret;
1115         u8 val;
1116
1117         lg_dbg("(%d-%04x)\n",
1118                i2c_adap ? i2c_adapter_id(i2c_adap) : 0,
1119                config ? config->i2c_addr : 0);
1120
1121         state = kzalloc(sizeof(struct lgdt3305_state), GFP_KERNEL);
1122         if (state == NULL)
1123                 goto fail;
1124
1125         state->cfg = config;
1126         state->i2c_adap = i2c_adap;
1127
1128         switch (config->demod_chip) {
1129         case LGDT3304:
1130                 memcpy(&state->frontend.ops, &lgdt3304_ops,
1131                        sizeof(struct dvb_frontend_ops));
1132                 break;
1133         case LGDT3305:
1134                 memcpy(&state->frontend.ops, &lgdt3305_ops,
1135                        sizeof(struct dvb_frontend_ops));
1136                 break;
1137         default:
1138                 goto fail;
1139         }
1140         state->frontend.demodulator_priv = state;
1141
1142         /* verify that we're talking to a lg dt3304/5 */
1143         ret = lgdt3305_read_reg(state, LGDT3305_GEN_CTRL_2, &val);
1144         if ((lg_fail(ret)) | (val == 0))
1145                 goto fail;
1146         ret = lgdt3305_write_reg(state, 0x0808, 0x80);
1147         if (lg_fail(ret))
1148                 goto fail;
1149         ret = lgdt3305_read_reg(state, 0x0808, &val);
1150         if ((lg_fail(ret)) | (val != 0x80))
1151                 goto fail;
1152         ret = lgdt3305_write_reg(state, 0x0808, 0x00);
1153         if (lg_fail(ret))
1154                 goto fail;
1155
1156         state->current_frequency = -1;
1157         state->current_modulation = -1;
1158
1159         return &state->frontend;
1160 fail:
1161         lg_warn("unable to detect %s hardware\n",
1162                 config->demod_chip ? "LGDT3304" : "LGDT3305");
1163         kfree(state);
1164         return NULL;
1165 }
1166 EXPORT_SYMBOL(lgdt3305_attach);
1167
1168 static struct dvb_frontend_ops lgdt3304_ops = {
1169         .info = {
1170                 .name = "LG Electronics LGDT3304 VSB/QAM Frontend",
1171                 .type               = FE_ATSC,
1172                 .frequency_min      = 54000000,
1173                 .frequency_max      = 858000000,
1174                 .frequency_stepsize = 62500,
1175                 .caps = FE_CAN_QAM_64 | FE_CAN_QAM_256 | FE_CAN_8VSB
1176         },
1177         .i2c_gate_ctrl        = lgdt3305_i2c_gate_ctrl,
1178         .init                 = lgdt3305_init,
1179         .set_frontend         = lgdt3304_set_parameters,
1180         .get_frontend         = lgdt3305_get_frontend,
1181         .get_tune_settings    = lgdt3305_get_tune_settings,
1182         .read_status          = lgdt3305_read_status,
1183         .read_ber             = lgdt3305_read_ber,
1184         .read_signal_strength = lgdt3305_read_signal_strength,
1185         .read_snr             = lgdt3305_read_snr,
1186         .read_ucblocks        = lgdt3305_read_ucblocks,
1187         .release              = lgdt3305_release,
1188 };
1189
1190 static struct dvb_frontend_ops lgdt3305_ops = {
1191         .info = {
1192                 .name = "LG Electronics LGDT3305 VSB/QAM Frontend",
1193                 .type               = FE_ATSC,
1194                 .frequency_min      = 54000000,
1195                 .frequency_max      = 858000000,
1196                 .frequency_stepsize = 62500,
1197                 .caps = FE_CAN_QAM_64 | FE_CAN_QAM_256 | FE_CAN_8VSB
1198         },
1199         .i2c_gate_ctrl        = lgdt3305_i2c_gate_ctrl,
1200         .init                 = lgdt3305_init,
1201         .sleep                = lgdt3305_sleep,
1202         .set_frontend         = lgdt3305_set_parameters,
1203         .get_frontend         = lgdt3305_get_frontend,
1204         .get_tune_settings    = lgdt3305_get_tune_settings,
1205         .read_status          = lgdt3305_read_status,
1206         .read_ber             = lgdt3305_read_ber,
1207         .read_signal_strength = lgdt3305_read_signal_strength,
1208         .read_snr             = lgdt3305_read_snr,
1209         .read_ucblocks        = lgdt3305_read_ucblocks,
1210         .release              = lgdt3305_release,
1211 };
1212
1213 MODULE_DESCRIPTION("LG Electronics LGDT3304/5 ATSC/QAM-B Demodulator Driver");
1214 MODULE_AUTHOR("Michael Krufky <mkrufky@linuxtv.org>");
1215 MODULE_LICENSE("GPL");
1216 MODULE_VERSION("0.2");
1217
1218 /*
1219  * Local variables:
1220  * c-basic-offset: 8
1221  * End:
1222  */