drivers/media/dvb/frontends/s5h1409.c

   1 /*
   2     Samsung S5H1409 VSB/QAM demodulator driver
   3
   4     Copyright (C) 2006 Steven Toth <stoth@hauppauge.com>
   5
   6     This program is free software; you can redistribute it and/or modify
   7     it under the terms of the GNU General Public License as published by
   8     the Free Software Foundation; either version 2 of the License, or
   9     (at your option) any later version.
  10
  11     This program is distributed in the hope that it will be useful,
  12     but WITHOUT ANY WARRANTY; without even the implied warranty of
  13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14     GNU General Public License for more details.
  15
  16     You should have received a copy of the GNU General Public License
  17     along with this program; if not, write to the Free Software
  18     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19
  20 */
  21
  22 #include <linux/kernel.h>
  23 #include <linux/init.h>
  24 #include <linux/module.h>
  25 #include <linux/string.h>
  26 #include <linux/slab.h>
  27 #include <linux/delay.h>
  28 #include "dvb_frontend.h"
  29 #include "dvb-pll.h"
  30 #include "s5h1409.h"
  31
  32 struct s5h1409_state {
  33
  34         struct i2c_adapter* i2c;
  35
  36         /* configuration settings */
  37         const struct s5h1409_config* config;
  38
  39         struct dvb_frontend frontend;
  40
  41         /* previous uncorrected block counter */
  42         fe_modulation_t current_modulation;
  43
  44         u32 current_frequency;
  45 };
  46
  47 static int debug = 0;
  48 #define dprintk if (debug) printk
  49
  50 /* Register values to initialise the demod, this will set VSB by default */
  51 static struct init_tab {
  52         u8      reg;
  53         u16     data;
  54 } init_tab[] = {
  55         { 0x00, 0x0071, },
  56         { 0x01, 0x3213, },
  57         { 0x09, 0x0025, },
  58         { 0x1c, 0x001d, },
  59         { 0x1f, 0x002d, },
  60         { 0x20, 0x001d, },
  61         { 0x22, 0x0022, },
  62         { 0x23, 0x0020, },
  63         { 0x29, 0x110f, },
  64         { 0x2a, 0x10b4, },
  65         { 0x2b, 0x10ae, },
  66         { 0x2c, 0x0031, },
  67         { 0x31, 0x010d, },
  68         { 0x32, 0x0100, },
  69         { 0x44, 0x0510, },
  70         { 0x54, 0x0104, },
  71         { 0x58, 0x2222, },
  72         { 0x59, 0x1162, },
  73         { 0x5a, 0x3211, },
  74         { 0x5d, 0x0370, },
  75         { 0x5e, 0x0296, },
  76         { 0x61, 0x0010, },
  77         { 0x63, 0x4a00, },
  78         { 0x65, 0x0800, },
  79         { 0x71, 0x0003, },
  80         { 0x72, 0x0470, },
  81         { 0x81, 0x0002, },
  82         { 0x82, 0x0600, },
  83         { 0x86, 0x0002, },
  84         { 0x8a, 0x2c38, },
  85         { 0x8b, 0x2a37, },
  86         { 0x92, 0x302f, },
  87         { 0x93, 0x3332, },
  88         { 0x96, 0x000c, },
  89         { 0x99, 0x0101, },
  90         { 0x9c, 0x2e37, },
  91         { 0x9d, 0x2c37, },
  92         { 0x9e, 0x2c37, },
  93         { 0xab, 0x0100, },
  94         { 0xac, 0x1003, },
  95         { 0xad, 0x103f, },
  96         { 0xe2, 0x0100, },
  97         { 0x28, 0x1010, },
  98         { 0xb1, 0x000e, },
  99 };
 100
 101 /* VSB SNR lookup table */
 102 static struct vsb_snr_tab {
 103         u16     val;
 104         u16     data;
 105 } vsb_snr_tab[] = {
 106         { 1023, 770, },
 107         {  923, 300, },
 108         {  918, 295, },
 109         {  915, 290, },
 110         {  911, 285, },
 111         {  906, 280, },
 112         {  901, 275, },
 113         {  896, 270, },
 114         {  891, 265, },
 115         {  885, 260, },
 116         {  879, 255, },
 117         {  873, 250, },
 118         {  864, 245, },
 119         {  858, 240, },
 120         {  850, 235, },
 121         {  841, 230, },
 122         {  832, 225, },
 123         {  823, 220, },
 124         {  812, 215, },
 125         {  802, 210, },
 126         {  788, 205, },
 127         {  778, 200, },
 128         {  767, 195, },
 129         {  753, 190, },
 130         {  740, 185, },
 131         {  725, 180, },
 132         {  707, 175, },
 133         {  689, 170, },
 134         {  671, 165, },
 135         {  656, 160, },
 136         {  637, 155, },
 137         {  616, 150, },
 138         {  542, 145, },
 139         {  519, 140, },
 140         {  507, 135, },
 141         {  497, 130, },
 142         {  492, 125, },
 143         {  474, 120, },
 144         {  300, 111, },
 145         {    0,   0, },
 146 };
 147
 148 /* QAM64 SNR lookup table */
 149 static struct qam64_snr_tab {
 150         u16     val;
 151         u16     data;
 152 } qam64_snr_tab[] = {
 153         {   12, 300, },
 154         {   15, 290, },
 155         {   18, 280, },
 156         {   22, 270, },
 157         {   23, 268, },
 158         {   24, 266, },
 159         {   25, 264, },
 160         {   27, 262, },
 161         {   28, 260, },
 162         {   29, 258, },
 163         {   30, 256, },
 164         {   32, 254, },
 165         {   33, 252, },
 166         {   34, 250, },
 167         {   35, 249, },
 168         {   36, 248, },
 169         {   37, 247, },
 170         {   38, 246, },
 171         {   39, 245, },
 172         {   40, 244, },
 173         {   41, 243, },
 174         {   42, 241, },
 175         {   43, 240, },
 176         {   44, 239, },
 177         {   45, 238, },
 178         {   46, 237, },
 179         {   47, 236, },
 180         {   48, 235, },
 181         {   49, 234, },
 182         {   50, 233, },
 183         {   51, 232, },
 184         {   52, 231, },
 185         {   53, 230, },
 186         {   55, 229, },
 187         {   56, 228, },
 188         {   57, 227, },
 189         {   58, 226, },
 190         {   59, 225, },
 191         {   60, 224, },
 192         {   62, 223, },
 193         {   63, 222, },
 194         {   65, 221, },
 195         {   66, 220, },
 196         {   68, 219, },
 197         {   69, 218, },
 198         {   70, 217, },
 199         {   72, 216, },
 200         {   73, 215, },
 201         {   75, 214, },
 202         {   76, 213, },
 203         {   78, 212, },
 204         {   80, 211, },
 205         {   81, 210, },
 206         {   83, 209, },
 207         {   84, 208, },
 208         {   85, 207, },
 209         {   87, 206, },
 210         {   89, 205, },
 211         {   91, 204, },
 212         {   93, 203, },
 213         {   95, 202, },
 214         {   96, 201, },
 215         {  104, 200, },
 216 };
 217
 218 /* QAM256 SNR lookup table */
 219 static struct qam256_snr_tab {
 220         u16     val;
 221         u16     data;
 222 } qam256_snr_tab[] = {
 223         {   12, 400, },
 224         {   13, 390, },
 225         {   15, 380, },
 226         {   17, 360, },
 227         {   19, 350, },
 228         {   22, 348, },
 229         {   23, 346, },
 230         {   24, 344, },
 231         {   25, 342, },
 232         {   26, 340, },
 233         {   27, 336, },
 234         {   28, 334, },
 235         {   29, 332, },
 236         {   30, 330, },
 237         {   31, 328, },
 238         {   32, 326, },
 239         {   33, 325, },
 240         {   34, 322, },
 241         {   35, 320, },
 242         {   37, 318, },
 243         {   39, 316, },
 244         {   40, 314, },
 245         {   41, 312, },
 246         {   42, 310, },
 247         {   43, 308, },
 248         {   46, 306, },
 249         {   47, 304, },
 250         {   49, 302, },
 251         {   51, 300, },
 252         {   53, 298, },
 253         {   54, 297, },
 254         {   55, 296, },
 255         {   56, 295, },
 256         {   57, 294, },
 257         {   59, 293, },
 258         {   60, 292, },
 259         {   61, 291, },
 260         {   63, 290, },
 261         {   64, 289, },
 262         {   65, 288, },
 263         {   66, 287, },
 264         {   68, 286, },
 265         {   69, 285, },
 266         {   71, 284, },
 267         {   72, 283, },
 268         {   74, 282, },
 269         {   75, 281, },
 270         {   76, 280, },
 271         {   77, 279, },
 272         {   78, 278, },
 273         {   81, 277, },
 274         {   83, 276, },
 275         {   84, 275, },
 276         {   86, 274, },
 277         {   87, 273, },
 278         {   89, 272, },
 279         {   90, 271, },
 280         {   92, 270, },
 281         {   93, 269, },
 282         {   95, 268, },
 283         {   96, 267, },
 284         {   98, 266, },
 285         {  100, 265, },
 286         {  102, 264, },
 287         {  104, 263, },
 288         {  105, 262, },
 289         {  106, 261, },
 290         {  110, 260, },
 291 };
 292
 293 /* 8 bit registers, 16 bit values */
 294 static int s5h1409_writereg(struct s5h1409_state* state, u8 reg, u16 data)
 295 {
 296         int ret;
 297         u8 buf [] = { reg, data >> 8,  data & 0xff };
 298
 299         struct i2c_msg msg = { .addr = state->config->demod_address, .flags = 0, .buf = buf, .len = 3 };
 300
 301         ret = i2c_transfer(state->i2c, &msg, 1);
 302
 303         if (ret != 1)
 304                 printk("%s: writereg error (reg == 0x%02x, val == 0x%04x, ret == %i)\n",
 305                         __FUNCTION__, reg, data, ret);
 306
 307         return (ret != 1) ? -1 : 0;
 308 }
 309
 310 static u16 s5h1409_readreg(struct s5h1409_state* state, u8 reg)
 311 {
 312         int ret;
 313         u8 b0 [] = { reg };
 314         u8 b1 [] = { 0, 0 };
 315
 316         struct i2c_msg msg [] = {
 317                 { .addr = state->config->demod_address, .flags = 0, .buf = b0, .len = 1 },
 318                 { .addr = state->config->demod_address, .flags = I2C_M_RD, .buf = b1, .len = 2 } };
 319
 320         ret = i2c_transfer(state->i2c, msg, 2);
 321
 322         if (ret != 2)
 323                 printk("%s: readreg error (ret == %i)\n", __FUNCTION__, ret)
 324                         ;
 325         return (b1[0] << 8) | b1[1];
 326 }
 327
 328 static int s5h1409_softreset(struct dvb_frontend* fe)
 329 {
 330         struct s5h1409_state* state = fe->demodulator_priv;
 331
 332         dprintk("%s()\n", __FUNCTION__);
 333
 334         s5h1409_writereg(state, 0xf5, 0);
 335         s5h1409_writereg(state, 0xf5, 1);
 336         return 0;
 337 }
 338
 339 static int s5h1409_set_if_freq(struct dvb_frontend* fe, int KHz)
 340 {
 341         struct s5h1409_state* state = fe->demodulator_priv;
 342         int ret = 0;
 343
 344         dprintk("%s(%d KHz)\n", __FUNCTION__, KHz);
 345
 346         if( (KHz == 44000) || (KHz == 5380) )
 347         {
 348                 s5h1409_writereg(state, 0x87, 0x01be);
 349                 s5h1409_writereg(state, 0x88, 0x0436);
 350                 s5h1409_writereg(state, 0x89, 0x054d);
 351         } else {
 352                 printk("%s() Invalid arg = %d KHz\n", __FUNCTION__, KHz);
 353                 ret = -1;
 354         }
 355
 356         return ret;
 357 }
 358
 359 static int s5h1409_set_spectralinversion(struct dvb_frontend* fe, int inverted)
 360 {
 361         struct s5h1409_state* state = fe->demodulator_priv;
 362
 363         dprintk("%s()\n", __FUNCTION__);
 364
 365         if(inverted == 1)
 366                 return s5h1409_writereg(state, 0x1b, 0x1101); /* Inverted */
 367         else
 368                 return s5h1409_writereg(state, 0x1b, 0x0110); /* Normal */
 369 }
 370
 371 static int s5h1409_enable_modulation(struct dvb_frontend* fe, fe_modulation_t m)
 372 {
 373         struct s5h1409_state* state = fe->demodulator_priv;
 374
 375         dprintk("%s(0x%08x)\n", __FUNCTION__, m);
 376
 377         switch(m) {
 378         case VSB_8:
 379                 dprintk("%s() VSB_8\n", __FUNCTION__);
 380                 s5h1409_writereg(state, 0xf4, 0);
 381                 break;
 382         case QAM_64:
 383                 dprintk("%s() QAM_64\n", __FUNCTION__);
 384                 s5h1409_writereg(state, 0xf4, 1);
 385                 s5h1409_writereg(state, 0x85, 0x100);
 386                 break;
 387         case QAM_256:
 388                 dprintk("%s() QAM_256\n", __FUNCTION__);
 389                 s5h1409_writereg(state, 0xf4, 1);
 390                 s5h1409_writereg(state, 0x85, 0x101);
 391                 break;
 392         default:
 393                 dprintk("%s() Invalid modulation\n", __FUNCTION__);
 394                 return -EINVAL;
 395         }
 396
 397         state->current_modulation = m;
 398         s5h1409_softreset(fe);
 399
 400         return 0;
 401 }
 402
 403 static int s5h1409_i2c_gate_ctrl(struct dvb_frontend* fe, int enable)
 404 {
 405         struct s5h1409_state* state = fe->demodulator_priv;
 406
 407         dprintk("%s(%d)\n", __FUNCTION__, enable);
 408
 409         if (enable)
 410                 return s5h1409_writereg(state, 0xf3, 1);
 411         else
 412                 return s5h1409_writereg(state, 0xf3, 0);
 413 }
 414
 415 static int s5h1409_set_gpio(struct dvb_frontend* fe, int enable)
 416 {
 417         struct s5h1409_state* state = fe->demodulator_priv;
 418
 419         dprintk("%s(%d)\n", __FUNCTION__, enable);
 420
 421         if (enable)
 422                 return s5h1409_writereg(state, 0xe3, 0x1100);
 423         else
 424                 return s5h1409_writereg(state, 0xe3, 0);
 425 }
 426
 427 static int s5h1409_sleep(struct dvb_frontend* fe, int enable)
 428 {
 429         struct s5h1409_state* state = fe->demodulator_priv;
 430
 431         dprintk("%s(%d)\n", __FUNCTION__, enable);
 432
 433         return s5h1409_writereg(state, 0xf2, enable);
 434 }
 435
 436 static int s5h1409_register_reset(struct dvb_frontend* fe)
 437 {
 438         struct s5h1409_state* state = fe->demodulator_priv;
 439
 440         dprintk("%s()\n", __FUNCTION__);
 441
 442         return s5h1409_writereg(state, 0xfa, 0);
 443 }
 444
 445 /* Talk to the demod, set the FEC, GUARD, QAM settings etc */
 446 static int s5h1409_set_frontend (struct dvb_frontend* fe, struct dvb_frontend_parameters *p)
 447 {
 448         struct s5h1409_state* state = fe->demodulator_priv;
 449
 450         dprintk("%s(frequency=%d)\n", __FUNCTION__, p->frequency);
 451
 452         s5h1409_softreset(fe);
 453
 454         state->current_frequency = p->frequency;
 455
 456         s5h1409_enable_modulation(fe, p->u.vsb.modulation);
 457
 458         if (fe->ops.tuner_ops.set_params) {
 459                 if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 1);
 460                 fe->ops.tuner_ops.set_params(fe, p);
 461                 if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0);
 462         }
 463
 464         return 0;
 465 }
 466
 467 /* Reset the demod hardware and reset all of the configuration registers
 468    to a default state. */
 469 static int s5h1409_init (struct dvb_frontend* fe)
 470 {
 471         int i;
 472
 473         struct s5h1409_state* state = fe->demodulator_priv;
 474         dprintk("%s()\n", __FUNCTION__);
 475
 476         s5h1409_sleep(fe, 0);
 477         s5h1409_register_reset(fe);
 478
 479         for (i=0; i<sizeof(init_tab) / sizeof (struct init_tab); i++)
 480                 s5h1409_writereg(state, init_tab[i].reg, init_tab[i].data);
 481
 482         /* The datasheet says that after initialisation, VSB is default */
 483         state->current_modulation = VSB_8;
 484
 485         if (state->config->output_mode == S5H1409_SERIAL_OUTPUT)
 486                 s5h1409_writereg(state, 0xab, 0x100); /* Serial */
 487         else
 488                 s5h1409_writereg(state, 0xab, 0x0); /* Parallel */
 489
 490         s5h1409_set_spectralinversion(fe, state->config->inversion);
 491         s5h1409_set_if_freq(fe, state->config->if_freq);
 492         s5h1409_set_gpio(fe, state->config->gpio);
 493         s5h1409_softreset(fe);
 494
 495         /* Note: Leaving the I2C gate open here. */
 496         s5h1409_i2c_gate_ctrl(fe, 1);
 497
 498         return 0;
 499 }
 500
 501 static int s5h1409_read_status(struct dvb_frontend* fe, fe_status_t* status)
 502 {
 503         struct s5h1409_state* state = fe->demodulator_priv;
 504         u16 reg;
 505         u32 tuner_status = 0;
 506
 507         *status = 0;
 508
 509         /* Get the demodulator status */
 510         reg = s5h1409_readreg(state, 0xf1);
 511         if(reg & 0x1000)
 512                 *status |= FE_HAS_VITERBI;
 513         if(reg & 0x8000)
 514                 *status |= FE_HAS_LOCK | FE_HAS_SYNC;
 515
 516         switch(state->config->status_mode) {
 517         case S5H1409_DEMODLOCKING:
 518                 if (*status & FE_HAS_VITERBI)
 519                         *status |= FE_HAS_CARRIER | FE_HAS_SIGNAL;
 520                 break;
 521         case S5H1409_TUNERLOCKING:
 522                 /* Get the tuner status */
 523                 if (fe->ops.tuner_ops.get_status) {
 524                         if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 1);
 525
 526                         fe->ops.tuner_ops.get_status(fe, &tuner_status);
 527
 528                         if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0);
 529                 }
 530                 if (tuner_status)
 531                         *status |= FE_HAS_CARRIER | FE_HAS_SIGNAL;
 532                 break;
 533         }
 534
 535         dprintk("%s() status 0x%08x\n", __FUNCTION__, *status);
 536
 537         return 0;
 538 }
 539
 540 static int s5h1409_qam256_lookup_snr(struct dvb_frontend* fe, u16* snr, u16 v)
 541 {
 542         int i, ret = -EINVAL;
 543         dprintk("%s()\n", __FUNCTION__);
 544
 545         for (i=0; i<sizeof(qam256_snr_tab) / (sizeof(struct qam256_snr_tab)); i++) {
 546                 if (v < qam256_snr_tab[i].val) {
 547                         *snr = qam256_snr_tab[i].data;
 548                         ret = 0;
 549                         break;
 550                 }
 551         }
 552         return ret;
 553 }
 554
 555 static int s5h1409_qam64_lookup_snr(struct dvb_frontend* fe, u16* snr, u16 v)
 556 {
 557         int i, ret = -EINVAL;
 558         dprintk("%s()\n", __FUNCTION__);
 559
 560         for (i=0; i<sizeof(qam64_snr_tab) / (sizeof(struct qam64_snr_tab)); i++) {
 561                 if (v < qam64_snr_tab[i].val) {
 562                         *snr = qam64_snr_tab[i].data;
 563                         ret = 0;
 564                         break;
 565                 }
 566         }
 567         return ret;
 568 }
 569
 570 static int s5h1409_vsb_lookup_snr(struct dvb_frontend* fe, u16* snr, u16 v)
 571 {
 572         int i, ret = -EINVAL;
 573         dprintk("%s()\n", __FUNCTION__);
 574
 575         for (i=0; i<sizeof(vsb_snr_tab) / (sizeof(struct vsb_snr_tab)); i++) {
 576                 if (v > vsb_snr_tab[i].val) {
 577                         *snr = vsb_snr_tab[i].data;
 578                         ret = 0;
 579                         break;
 580                 }
 581         }
 582         dprintk("%s() snr=%d\n", __FUNCTION__, *snr);
 583         return ret;
 584 }
 585
 586 static int s5h1409_read_snr(struct dvb_frontend* fe, u16* snr)
 587 {
 588         struct s5h1409_state* state = fe->demodulator_priv;
 589         u16 reg;
 590         dprintk("%s()\n", __FUNCTION__);
 591
 592         reg = s5h1409_readreg(state, 0xf1) & 0x1ff;
 593
 594         switch(state->current_modulation) {
 595         case QAM_64:
 596                 return s5h1409_qam64_lookup_snr(fe, snr, reg);
 597         case QAM_256:
 598                 return s5h1409_qam256_lookup_snr(fe, snr, reg);
 599         case VSB_8:
 600                 return s5h1409_vsb_lookup_snr(fe, snr, reg);
 601         default:
 602                 break;
 603         }
 604
 605         return -EINVAL;
 606 }
 607
 608 static int s5h1409_read_signal_strength(struct dvb_frontend* fe, u16* signal_strength)
 609 {
 610         return s5h1409_read_snr(fe, signal_strength);
 611 }
 612
 613 static int s5h1409_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks)
 614 {
 615         struct s5h1409_state* state = fe->demodulator_priv;
 616
 617         *ucblocks = s5h1409_readreg(state, 0xb5);
 618
 619         return 0;
 620 }
 621
 622 static int s5h1409_read_ber(struct dvb_frontend* fe, u32* ber)
 623 {
 624         return s5h1409_read_ucblocks(fe, ber);
 625 }
 626
 627 static int s5h1409_get_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters *p)
 628 {
 629         struct s5h1409_state* state = fe->demodulator_priv;
 630
 631         p->frequency = state->current_frequency;
 632         p->u.vsb.modulation = state->current_modulation;
 633
 634         return 0;
 635 }
 636
 637 static int s5h1409_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings *tune)
 638 {
 639         tune->min_delay_ms = 1000;
 640         return 0;
 641 }
 642
 643 static void s5h1409_release(struct dvb_frontend* fe)
 644 {
 645         struct s5h1409_state* state = fe->demodulator_priv;
 646         kfree(state);
 647 }
 648
 649 static struct dvb_frontend_ops s5h1409_ops;
 650
 651 struct dvb_frontend* s5h1409_attach(const struct s5h1409_config* config,
 652                                     struct i2c_adapter* i2c)
 653 {
 654         struct s5h1409_state* state = NULL;
 655
 656         /* allocate memory for the internal state */
 657         state = kmalloc(sizeof(struct s5h1409_state), GFP_KERNEL);
 658         if (state == NULL)
 659                 goto error;
 660
 661         /* setup the state */
 662         state->config = config;
 663         state->i2c = i2c;
 664         state->current_modulation = 0;
 665
 666         /* check if the demod exists */
 667         if (s5h1409_readreg(state, 0x04) != 0x0066)
 668                 goto error;
 669
 670         /* create dvb_frontend */
 671         memcpy(&state->frontend.ops, &s5h1409_ops, sizeof(struct dvb_frontend_ops));
 672         state->frontend.demodulator_priv = state;
 673
 674         /* Note: Leaving the I2C gate open here. */
 675         s5h1409_writereg(state, 0xf3, 1);
 676
 677         return &state->frontend;
 678
 679 error:
 680         kfree(state);
 681         return NULL;
 682 }
 683
 684 static struct dvb_frontend_ops s5h1409_ops = {
 685
 686         .info = {
 687                 .name                   = "Samsung S5H1409 QAM/8VSB Frontend",
 688                 .type                   = FE_ATSC,
 689                 .frequency_min          = 54000000,
 690                 .frequency_max          = 858000000,
 691                 .frequency_stepsize     = 62500,
 692                 .caps = FE_CAN_QAM_64 | FE_CAN_QAM_256 | FE_CAN_8VSB
 693         },
 694
 695         .init                 = s5h1409_init,
 696         .i2c_gate_ctrl        = s5h1409_i2c_gate_ctrl,
 697         .set_frontend         = s5h1409_set_frontend,
 698         .get_frontend         = s5h1409_get_frontend,
 699         .get_tune_settings    = s5h1409_get_tune_settings,
 700         .read_status          = s5h1409_read_status,
 701         .read_ber             = s5h1409_read_ber,
 702         .read_signal_strength = s5h1409_read_signal_strength,
 703         .read_snr             = s5h1409_read_snr,
 704         .read_ucblocks        = s5h1409_read_ucblocks,
 705         .release              = s5h1409_release,
 706 };
 707
 708 module_param(debug, int, 0644);
 709 MODULE_PARM_DESC(debug, "Enable verbose debug messages");
 710
 711 MODULE_DESCRIPTION("Samsung S5H1409 QAM-B/ATSC Demodulator driver");
 712 MODULE_AUTHOR("Steven Toth");
 713 MODULE_LICENSE("GPL");
 714
 715 EXPORT_SYMBOL(s5h1409_attach);