SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/media/dvb/frontends/nxt2002.c

   1 /*
   2     Support for B2C2/BBTI Technisat Air2PC - ATSC
   3
   4     Copyright (C) 2004 Taylor Jacob <rtjacob@earthlink.net>
   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 /*
  23  * This driver needs external firmware. Please use the command
  24  * "<kerneldir>/Documentation/dvb/get_dvb_firmware nxt2002" to
  25  * download/extract it, and then copy it to /usr/lib/hotplug/firmware
  26  * or /lib/firmware (depending on configuration of firmware hotplug).
  27  */
  28 #define NXT2002_DEFAULT_FIRMWARE "dvb-fe-nxt2002.fw"
  29 #define CRC_CCIT_MASK 0x1021
  30
  31 #include <linux/init.h>
  32 #include <linux/module.h>
  33 #include <linux/moduleparam.h>
  34 #include <linux/device.h>
  35 #include <linux/firmware.h>
  36 #include <linux/string.h>
  37 #include <linux/slab.h>
  38
  39 #include "dvb_frontend.h"
  40 #include "nxt2002.h"
  41
  42 struct nxt2002_state {
  43
  44         struct i2c_adapter* i2c;
  45         struct dvb_frontend_ops ops;
  46         const struct nxt2002_config* config;
  47         struct dvb_frontend frontend;
  48
  49         /* demodulator private data */
  50         u8 initialised:1;
  51 };
  52
  53 static int debug;
  54 #define dprintk(args...) \
  55         do { \
  56                 if (debug) printk(KERN_DEBUG "nxt2002: " args); \
  57         } while (0)
  58
  59 static int i2c_writebytes (struct nxt2002_state* state, u8 reg, u8 *buf, u8 len)
  60 {
  61         /* probbably a much better way or doing this */
  62         u8 buf2 [256],x;
  63         int err;
  64         struct i2c_msg msg = { .addr = state->config->demod_address, .flags = 0, .buf = buf2, .len = len + 1 };
  65
  66         buf2[0] = reg;
  67         for (x = 0 ; x < len ; x++)
  68                 buf2[x+1] = buf[x];
  69
  70         if ((err = i2c_transfer (state->i2c, &msg, 1)) != 1) {
  71                 printk ("%s: i2c write error (addr %02x, err == %i)\n",
  72                         __FUNCTION__, state->config->demod_address, err);
  73                 return -EREMOTEIO;
  74         }
  75
  76         return 0;
  77 }
  78
  79 static u8 i2c_readbytes (struct nxt2002_state* state, u8 reg, u8* buf, u8 len)
  80 {
  81         u8 reg2 [] = { reg };
  82
  83         struct i2c_msg msg [] = { { .addr = state->config->demod_address, .flags = 0, .buf = reg2, .len = 1 },
  84                         { .addr = state->config->demod_address, .flags = I2C_M_RD, .buf = buf, .len = len } };
  85
  86         int err;
  87
  88         if ((err = i2c_transfer (state->i2c, msg, 2)) != 2) {
  89                 printk ("%s: i2c read error (addr %02x, err == %i)\n",
  90                         __FUNCTION__, state->config->demod_address, err);
  91                 return -EREMOTEIO;
  92         }
  93
  94         return 0;
  95 }
  96
  97 static u16 nxt2002_crc(u16 crc, u8 c)
  98 {
  99
 100         u8 i;
 101         u16 input = (u16) c & 0xFF;
 102
 103         input<<=8;
 104         for(i=0 ;i<8 ;i++) {
 105                 if((crc ^ input) & 0x8000)
 106                         crc=(crc<<1)^CRC_CCIT_MASK;
 107                 else
 108                         crc<<=1;
 109         input<<=1;
 110         }
 111         return crc;
 112 }
 113
 114 static int nxt2002_writereg_multibyte (struct nxt2002_state* state, u8 reg, u8* data, u8 len)
 115 {
 116         u8 buf;
 117         dprintk("%s\n", __FUNCTION__);
 118
 119         /* set multi register length */
 120         i2c_writebytes(state,0x34,&len,1);
 121
 122         /* set mutli register register */
 123         i2c_writebytes(state,0x35,&reg,1);
 124
 125         /* send the actual data */
 126         i2c_writebytes(state,0x36,data,len);
 127
 128         /* toggle the multireg write bit*/
 129         buf = 0x02;
 130         i2c_writebytes(state,0x21,&buf,1);
 131
 132         i2c_readbytes(state,0x21,&buf,1);
 133
 134         if ((buf & 0x02) == 0)
 135                 return 0;
 136
 137         dprintk("Error writing multireg register %02X\n",reg);
 138
 139         return 0;
 140 }
 141
 142 static int nxt2002_readreg_multibyte (struct nxt2002_state* state, u8 reg, u8* data, u8 len)
 143 {
 144         u8 len2;
 145         dprintk("%s\n", __FUNCTION__);
 146
 147         /* set multi register length */
 148         len2 = len & 0x80;
 149         i2c_writebytes(state,0x34,&len2,1);
 150
 151         /* set mutli register register */
 152         i2c_writebytes(state,0x35,&reg,1);
 153
 154         /* send the actual data */
 155         i2c_readbytes(state,reg,data,len);
 156
 157         return 0;
 158 }
 159
 160 static void nxt2002_microcontroller_stop (struct nxt2002_state* state)
 161 {
 162         u8 buf[2],counter = 0;
 163         dprintk("%s\n", __FUNCTION__);
 164
 165         buf[0] = 0x80;
 166         i2c_writebytes(state,0x22,buf,1);
 167
 168         while (counter < 20) {
 169                 i2c_readbytes(state,0x31,buf,1);
 170                 if (buf[0] & 0x40)
 171                         return;
 172                 msleep(10);
 173                 counter++;
 174         }
 175
 176         dprintk("Timeout waiting for micro to stop.. This is ok after firmware upload\n");
 177         return;
 178 }
 179
 180 static void nxt2002_microcontroller_start (struct nxt2002_state* state)
 181 {
 182         u8 buf;
 183         dprintk("%s\n", __FUNCTION__);
 184
 185         buf = 0x00;
 186         i2c_writebytes(state,0x22,&buf,1);
 187 }
 188
 189 static int nxt2002_writetuner (struct nxt2002_state* state, u8* data)
 190 {
 191         u8 buf,count = 0;
 192
 193         dprintk("Tuner Bytes: %02X %02X %02X %02X\n",data[0],data[1],data[2],data[3]);
 194
 195         dprintk("%s\n", __FUNCTION__);
 196         /* stop the micro first */
 197         nxt2002_microcontroller_stop(state);
 198
 199         /* set the i2c transfer speed to the tuner */
 200         buf = 0x03;
 201         i2c_writebytes(state,0x20,&buf,1);
 202
 203         /* setup to transfer 4 bytes via i2c */
 204         buf = 0x04;
 205         i2c_writebytes(state,0x34,&buf,1);
 206
 207         /* write actual tuner bytes */
 208         i2c_writebytes(state,0x36,data,4);
 209
 210         /* set tuner i2c address */
 211         buf = 0xC2;
 212         i2c_writebytes(state,0x35,&buf,1);
 213
 214         /* write UC Opmode to begin transfer */
 215         buf = 0x80;
 216         i2c_writebytes(state,0x21,&buf,1);
 217
 218         while (count < 20) {
 219                 i2c_readbytes(state,0x21,&buf,1);
 220                 if ((buf & 0x80)== 0x00)
 221                         return 0;
 222                 msleep(100);
 223                 count++;
 224         }
 225
 226         printk("nxt2002: timeout error writing tuner\n");
 227         return 0;
 228 }
 229
 230 static void nxt2002_agc_reset(struct nxt2002_state* state)
 231 {
 232         u8 buf;
 233         dprintk("%s\n", __FUNCTION__);
 234
 235         buf = 0x08;
 236         i2c_writebytes(state,0x08,&buf,1);
 237
 238         buf = 0x00;
 239         i2c_writebytes(state,0x08,&buf,1);
 240
 241         return;
 242 }
 243
 244 static int nxt2002_load_firmware (struct dvb_frontend* fe, const struct firmware *fw)
 245 {
 246
 247         struct nxt2002_state* state = fe->demodulator_priv;
 248         u8 buf[256],written = 0,chunkpos = 0;
 249         u16 rambase,position,crc = 0;
 250
 251         dprintk("%s\n", __FUNCTION__);
 252         dprintk("Firmware is %zu bytes\n",fw->size);
 253
 254         /* Get the RAM base for this nxt2002 */
 255         i2c_readbytes(state,0x10,buf,1);
 256
 257         if (buf[0] & 0x10)
 258                 rambase = 0x1000;
 259         else
 260                 rambase = 0x0000;
 261
 262         dprintk("rambase on this nxt2002 is %04X\n",rambase);
 263
 264         /* Hold the micro in reset while loading firmware */
 265         buf[0] = 0x80;
 266         i2c_writebytes(state,0x2B,buf,1);
 267
 268         for (position = 0; position < fw->size ; position++) {
 269                 if (written == 0) {
 270                         crc = 0;
 271                         chunkpos = 0x28;
 272                         buf[0] = ((rambase + position) >> 8);
 273                         buf[1] = (rambase + position) & 0xFF;
 274                         buf[2] = 0x81;
 275                         /* write starting address */
 276                         i2c_writebytes(state,0x29,buf,3);
 277                 }
 278                 written++;
 279                 chunkpos++;
 280
 281                 if ((written % 4) == 0)
 282                         i2c_writebytes(state,chunkpos,&fw->data[position-3],4);
 283
 284                 crc = nxt2002_crc(crc,fw->data[position]);
 285
 286                 if ((written == 255) || (position+1 == fw->size)) {
 287                         /* write remaining bytes of firmware */
 288                         i2c_writebytes(state, chunkpos+4-(written %4),
 289                                 &fw->data[position-(written %4) + 1],
 290                                 written %4);
 291                         buf[0] = crc << 8;
 292                         buf[1] = crc & 0xFF;
 293
 294                         /* write crc */
 295                         i2c_writebytes(state,0x2C,buf,2);
 296
 297                         /* do a read to stop things */
 298                         i2c_readbytes(state,0x2A,buf,1);
 299
 300                         /* set transfer mode to complete */
 301                         buf[0] = 0x80;
 302                         i2c_writebytes(state,0x2B,buf,1);
 303
 304                         written = 0;
 305                 }
 306         }
 307
 308         printk ("done.\n");
 309         return 0;
 310 };
 311
 312 static int nxt2002_setup_frontend_parameters (struct dvb_frontend* fe,
 313                                              struct dvb_frontend_parameters *p)
 314 {
 315         struct nxt2002_state* state = fe->demodulator_priv;
 316         u32 freq = 0;
 317         u16 tunerfreq = 0;
 318         u8 buf[4];
 319
 320         freq = 44000 + ( p->frequency / 1000 );
 321
 322         dprintk("freq = %d      p->frequency = %d\n",freq,p->frequency);
 323
 324         tunerfreq = freq * 24/4000;
 325
 326         buf[0] = (tunerfreq >> 8) & 0x7F;
 327         buf[1] = (tunerfreq & 0xFF);
 328
 329         if (p->frequency <= 214000000) {
 330                 buf[2] = 0x84 + (0x06 << 3);
 331                 buf[3] = (p->frequency <= 172000000) ? 0x01 : 0x02;
 332         } else if (p->frequency <= 721000000) {
 333                 buf[2] = 0x84 + (0x07 << 3);
 334                 buf[3] = (p->frequency <= 467000000) ? 0x02 : 0x08;
 335         } else if (p->frequency <= 841000000) {
 336                 buf[2] = 0x84 + (0x0E << 3);
 337                 buf[3] = 0x08;
 338         } else {
 339                 buf[2] = 0x84 + (0x0F << 3);
 340                 buf[3] = 0x02;
 341         }
 342
 343         /* write frequency information */
 344         nxt2002_writetuner(state,buf);
 345
 346         /* reset the agc now that tuning has been completed */
 347         nxt2002_agc_reset(state);
 348
 349         /* set target power level */
 350         switch (p->u.vsb.modulation) {
 351                 case QAM_64:
 352                 case QAM_256:
 353                                 buf[0] = 0x74;
 354                                 break;
 355                 case VSB_8:
 356                                 buf[0] = 0x70;
 357                                 break;
 358                 default:
 359                                 return -EINVAL;
 360                                 break;
 361         }
 362         i2c_writebytes(state,0x42,buf,1);
 363
 364         /* configure sdm */
 365         buf[0] = 0x87;
 366         i2c_writebytes(state,0x57,buf,1);
 367
 368         /* write sdm1 input */
 369         buf[0] = 0x10;
 370         buf[1] = 0x00;
 371         nxt2002_writereg_multibyte(state,0x58,buf,2);
 372
 373         /* write sdmx input */
 374         switch (p->u.vsb.modulation) {
 375                 case QAM_64:
 376                                 buf[0] = 0x68;
 377                                 break;
 378                 case QAM_256:
 379                                 buf[0] = 0x64;
 380                                 break;
 381                 case VSB_8:
 382                                 buf[0] = 0x60;
 383                                 break;
 384                 default:
 385                                 return -EINVAL;
 386                                 break;
 387         }
 388         buf[1] = 0x00;
 389         nxt2002_writereg_multibyte(state,0x5C,buf,2);
 390
 391         /* write adc power lpf fc */
 392         buf[0] = 0x05;
 393         i2c_writebytes(state,0x43,buf,1);
 394
 395         /* write adc power lpf fc */
 396         buf[0] = 0x05;
 397         i2c_writebytes(state,0x43,buf,1);
 398
 399         /* write accumulator2 input */
 400         buf[0] = 0x80;
 401         buf[1] = 0x00;
 402         nxt2002_writereg_multibyte(state,0x4B,buf,2);
 403
 404         /* write kg1 */
 405         buf[0] = 0x00;
 406         i2c_writebytes(state,0x4D,buf,1);
 407
 408         /* write sdm12 lpf fc */
 409         buf[0] = 0x44;
 410         i2c_writebytes(state,0x55,buf,1);
 411
 412         /* write agc control reg */
 413         buf[0] = 0x04;
 414         i2c_writebytes(state,0x41,buf,1);
 415
 416         /* write agc ucgp0 */
 417         switch (p->u.vsb.modulation) {
 418                 case QAM_64:
 419                                 buf[0] = 0x02;
 420                                 break;
 421                 case QAM_256:
 422                                 buf[0] = 0x03;
 423                                 break;
 424                 case VSB_8:
 425                                 buf[0] = 0x00;
 426                                 break;
 427                 default:
 428                                 return -EINVAL;
 429                                 break;
 430         }
 431         i2c_writebytes(state,0x30,buf,1);
 432
 433         /* write agc control reg */
 434         buf[0] = 0x00;
 435         i2c_writebytes(state,0x41,buf,1);
 436
 437         /* write accumulator2 input */
 438         buf[0] = 0x80;
 439         buf[1] = 0x00;
 440         nxt2002_writereg_multibyte(state,0x49,buf,2);
 441         nxt2002_writereg_multibyte(state,0x4B,buf,2);
 442
 443         /* write agc control reg */
 444         buf[0] = 0x04;
 445         i2c_writebytes(state,0x41,buf,1);
 446
 447         nxt2002_microcontroller_start(state);
 448
 449         /* adjacent channel detection should be done here, but I don't
 450         have any stations with this need so I cannot test it */
 451
 452         return 0;
 453 }
 454
 455 static int nxt2002_read_status(struct dvb_frontend* fe, fe_status_t* status)
 456 {
 457         struct nxt2002_state* state = fe->demodulator_priv;
 458         u8 lock;
 459         i2c_readbytes(state,0x31,&lock,1);
 460
 461         *status = 0;
 462         if (lock & 0x20) {
 463                 *status |= FE_HAS_SIGNAL;
 464                 *status |= FE_HAS_CARRIER;
 465                 *status |= FE_HAS_VITERBI;
 466                 *status |= FE_HAS_SYNC;
 467                 *status |= FE_HAS_LOCK;
 468         }
 469         return 0;
 470 }
 471
 472 static int nxt2002_read_ber(struct dvb_frontend* fe, u32* ber)
 473 {
 474         struct nxt2002_state* state = fe->demodulator_priv;
 475         u8 b[3];
 476
 477         nxt2002_readreg_multibyte(state,0xE6,b,3);
 478
 479         *ber = ((b[0] << 8) + b[1]) * 8;
 480
 481         return 0;
 482 }
 483
 484 static int nxt2002_read_signal_strength(struct dvb_frontend* fe, u16* strength)
 485 {
 486         struct nxt2002_state* state = fe->demodulator_priv;
 487         u8 b[2];
 488         u16 temp = 0;
 489
 490         /* setup to read cluster variance */
 491         b[0] = 0x00;
 492         i2c_writebytes(state,0xA1,b,1);
 493
 494         /* get multreg val */
 495         nxt2002_readreg_multibyte(state,0xA6,b,2);
 496
 497         temp = (b[0] << 8) | b[1];
 498         *strength = ((0x7FFF - temp) & 0x0FFF) * 16;
 499
 500         return 0;
 501 }
 502
 503 static int nxt2002_read_snr(struct dvb_frontend* fe, u16* snr)
 504 {
 505
 506         struct nxt2002_state* state = fe->demodulator_priv;
 507         u8 b[2];
 508         u16 temp = 0, temp2;
 509         u32 snrdb = 0;
 510
 511         /* setup to read cluster variance */
 512         b[0] = 0x00;
 513         i2c_writebytes(state,0xA1,b,1);
 514
 515         /* get multreg val from 0xA6 */
 516         nxt2002_readreg_multibyte(state,0xA6,b,2);
 517
 518         temp = (b[0] << 8) | b[1];
 519         temp2 = 0x7FFF - temp;
 520
 521         /* snr will be in db */
 522         if (temp2 > 0x7F00)
 523                 snrdb = 1000*24 + ( 1000*(30-24) * ( temp2 - 0x7F00 ) / ( 0x7FFF - 0x7F00 ) );
 524         else if (temp2 > 0x7EC0)
 525                 snrdb = 1000*18 + ( 1000*(24-18) * ( temp2 - 0x7EC0 ) / ( 0x7F00 - 0x7EC0 ) );
 526         else if (temp2 > 0x7C00)
 527                 snrdb = 1000*12 + ( 1000*(18-12) * ( temp2 - 0x7C00 ) / ( 0x7EC0 - 0x7C00 ) );
 528         else
 529                 snrdb = 1000*0 + ( 1000*(12-0) * ( temp2 - 0 ) / ( 0x7C00 - 0 ) );
 530
 531         /* the value reported back from the frontend will be FFFF=32db 0000=0db */
 532
 533         *snr = snrdb * (0xFFFF/32000);
 534
 535         return 0;
 536 }
 537
 538 static int nxt2002_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks)
 539 {
 540         struct nxt2002_state* state = fe->demodulator_priv;
 541         u8 b[3];
 542
 543         nxt2002_readreg_multibyte(state,0xE6,b,3);
 544         *ucblocks = b[2];
 545
 546         return 0;
 547 }
 548
 549 static int nxt2002_sleep(struct dvb_frontend* fe)
 550 {
 551         return 0;
 552 }
 553
 554 static int nxt2002_init(struct dvb_frontend* fe)
 555 {
 556         struct nxt2002_state* state = fe->demodulator_priv;
 557         const struct firmware *fw;
 558         int ret;
 559         u8 buf[2];
 560
 561         if (!state->initialised) {
 562                 /* request the firmware, this will block until someone uploads it */
 563                 printk("nxt2002: Waiting for firmware upload (%s)...\n", NXT2002_DEFAULT_FIRMWARE);
 564                 ret = state->config->request_firmware(fe, &fw, NXT2002_DEFAULT_FIRMWARE);
 565                 printk("nxt2002: Waiting for firmware upload(2)...\n");
 566                 if (ret) {
 567                         printk("nxt2002: no firmware upload (timeout or file not found?)\n");
 568                         return ret;
 569                 }
 570
 571                 ret = nxt2002_load_firmware(fe, fw);
 572                 if (ret) {
 573                         printk("nxt2002: writing firmware to device failed\n");
 574                         release_firmware(fw);
 575                         return ret;
 576                 }
 577                 printk("nxt2002: firmware upload complete\n");
 578
 579                 /* Put the micro into reset */
 580                 nxt2002_microcontroller_stop(state);
 581
 582                 /* ensure transfer is complete */
 583                 buf[0]=0;
 584                 i2c_writebytes(state,0x2B,buf,1);
 585
 586                 /* Put the micro into reset for real this time */
 587                 nxt2002_microcontroller_stop(state);
 588
 589                 /* soft reset everything (agc,frontend,eq,fec)*/
 590                 buf[0] = 0x0F;
 591                 i2c_writebytes(state,0x08,buf,1);
 592                 buf[0] = 0x00;
 593                 i2c_writebytes(state,0x08,buf,1);
 594
 595                 /* write agc sdm configure */
 596                 buf[0] = 0xF1;
 597                 i2c_writebytes(state,0x57,buf,1);
 598
 599                 /* write mod output format */
 600                 buf[0] = 0x20;
 601                 i2c_writebytes(state,0x09,buf,1);
 602
 603                 /* write fec mpeg mode */
 604                 buf[0] = 0x7E;
 605                 buf[1] = 0x00;
 606                 i2c_writebytes(state,0xE9,buf,2);
 607
 608                 /* write mux selection */
 609                 buf[0] = 0x00;
 610                 i2c_writebytes(state,0xCC,buf,1);
 611
 612                 state->initialised = 1;
 613         }
 614
 615         return 0;
 616 }
 617
 618 static int nxt2002_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings* fesettings)
 619 {
 620         fesettings->min_delay_ms = 500;
 621         fesettings->step_size = 0;
 622         fesettings->max_drift = 0;
 623         return 0;
 624 }
 625
 626 static void nxt2002_release(struct dvb_frontend* fe)
 627 {
 628         struct nxt2002_state* state = fe->demodulator_priv;
 629         kfree(state);
 630 }
 631
 632 static struct dvb_frontend_ops nxt2002_ops;
 633
 634 struct dvb_frontend* nxt2002_attach(const struct nxt2002_config* config,
 635                                    struct i2c_adapter* i2c)
 636 {
 637         struct nxt2002_state* state = NULL;
 638         u8 buf [] = {0,0,0,0,0};
 639
 640         /* allocate memory for the internal state */
 641         state = kmalloc(sizeof(struct nxt2002_state), GFP_KERNEL);
 642         if (state == NULL) goto error;
 643
 644         /* setup the state */
 645         state->config = config;
 646         state->i2c = i2c;
 647         memcpy(&state->ops, &nxt2002_ops, sizeof(struct dvb_frontend_ops));
 648         state->initialised = 0;
 649
 650         /* Check the first 5 registers to ensure this a revision we can handle */
 651
 652         i2c_readbytes(state, 0x00, buf, 5);
 653         if (buf[0] != 0x04) goto error;         /* device id */
 654         if (buf[1] != 0x02) goto error;         /* fab id */
 655         if (buf[2] != 0x11) goto error;         /* month */
 656         if (buf[3] != 0x20) goto error;         /* year msb */
 657         if (buf[4] != 0x00) goto error;         /* year lsb */
 658
 659         /* create dvb_frontend */
 660         state->frontend.ops = &state->ops;
 661         state->frontend.demodulator_priv = state;
 662         return &state->frontend;
 663
 664 error:
 665         kfree(state);
 666         return NULL;
 667 }
 668
 669 static struct dvb_frontend_ops nxt2002_ops = {
 670
 671         .info = {
 672                 .name = "Nextwave nxt2002 VSB/QAM frontend",
 673                 .type = FE_ATSC,
 674                 .frequency_min =  54000000,
 675                 .frequency_max = 860000000,
 676                 /* stepsize is just a guess */
 677                 .frequency_stepsize = 166666,
 678                 .caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
 679                         FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
 680                         FE_CAN_8VSB | FE_CAN_QAM_64 | FE_CAN_QAM_256
 681         },
 682
 683         .release = nxt2002_release,
 684
 685         .init = nxt2002_init,
 686         .sleep = nxt2002_sleep,
 687
 688         .set_frontend = nxt2002_setup_frontend_parameters,
 689         .get_tune_settings = nxt2002_get_tune_settings,
 690
 691         .read_status = nxt2002_read_status,
 692         .read_ber = nxt2002_read_ber,
 693         .read_signal_strength = nxt2002_read_signal_strength,
 694         .read_snr = nxt2002_read_snr,
 695         .read_ucblocks = nxt2002_read_ucblocks,
 696
 697 };
 698
 699 module_param(debug, int, 0644);
 700 MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off).");
 701
 702 MODULE_DESCRIPTION("NXT2002 ATSC (8VSB & ITU J83 AnnexB FEC QAM64/256) demodulator driver");
 703 MODULE_AUTHOR("Taylor Jacob");
 704 MODULE_LICENSE("GPL");
 705
 706 EXPORT_SYMBOL(nxt2002_attach);