drivers/media/dvb-frontends/or51132.c

   1 /*
   2  *    Support for OR51132 (pcHDTV HD-3000) - VSB/QAM
   3  *
   4  *
   5  *    Copyright (C) 2007 Trent Piepho <xyzzy@speakeasy.org>
   6  *
   7  *    Copyright (C) 2005 Kirk Lapray <kirk_lapray@bigfoot.com>
   8  *
   9  *    Based on code from Jack Kelliher (kelliher@xmission.com)
  10  *                           Copyright (C) 2002 & pcHDTV, inc.
  11  *
  12  *    This program is free software; you can redistribute it and/or modify
  13  *    it under the terms of the GNU General Public License as published by
  14  *    the Free Software Foundation; either version 2 of the License, or
  15  *    (at your option) any later version.
  16  *
  17  *    This program is distributed in the hope that it will be useful,
  18  *    but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  *    GNU General Public License for more details.
  21  *
  22 */
  23
  24 /*
  25  * This driver needs two external firmware files. Please copy
  26  * "dvb-fe-or51132-vsb.fw" and "dvb-fe-or51132-qam.fw" to
  27  * /usr/lib/hotplug/firmware/ or /lib/firmware/
  28  * (depending on configuration of firmware hotplug).
  29  */
  30 #define OR51132_VSB_FIRMWARE "dvb-fe-or51132-vsb.fw"
  31 #define OR51132_QAM_FIRMWARE "dvb-fe-or51132-qam.fw"
  32
  33 #include <linux/kernel.h>
  34 #include <linux/module.h>
  35 #include <linux/init.h>
  36 #include <linux/delay.h>
  37 #include <linux/string.h>
  38 #include <linux/slab.h>
  39 #include <asm/byteorder.h>
  40
  41 #include "dvb_math.h"
  42 #include "dvb_frontend.h"
  43 #include "or51132.h"
  44
  45 static int debug;
  46 #define dprintk(args...) \
  47         do { \
  48                 if (debug) printk(KERN_DEBUG "or51132: " args); \
  49         } while (0)
  50
  51
  52 struct or51132_state
  53 {
  54         struct i2c_adapter* i2c;
  55
  56         /* Configuration settings */
  57         const struct or51132_config* config;
  58
  59         struct dvb_frontend frontend;
  60
  61         /* Demodulator private data */
  62         enum fe_modulation current_modulation;
  63         u32 snr; /* Result of last SNR calculation */
  64
  65         /* Tuner private data */
  66         u32 current_frequency;
  67 };
  68
  69
  70 /* Write buffer to demod */
  71 static int or51132_writebuf(struct or51132_state *state, const u8 *buf, int len)
  72 {
  73         int err;
  74         struct i2c_msg msg = { .addr = state->config->demod_address,
  75                                .flags = 0, .buf = (u8*)buf, .len = len };
  76
  77         /* msleep(20); */ /* doesn't appear to be necessary */
  78         if ((err = i2c_transfer(state->i2c, &msg, 1)) != 1) {
  79                 printk(KERN_WARNING "or51132: I2C write (addr 0x%02x len %d) error: %d\n",
  80                        msg.addr, msg.len, err);
  81                 return -EREMOTEIO;
  82         }
  83         return 0;
  84 }
  85
  86 /* Write constant bytes, e.g. or51132_writebytes(state, 0x04, 0x42, 0x00);
  87    Less code and more efficient that loading a buffer on the stack with
  88    the bytes to send and then calling or51132_writebuf() on that. */
  89 #define or51132_writebytes(state, data...)  \
  90         ({ static const u8 _data[] = {data}; \
  91         or51132_writebuf(state, _data, sizeof(_data)); })
  92
  93 /* Read data from demod into buffer.  Returns 0 on success. */
  94 static int or51132_readbuf(struct or51132_state *state, u8 *buf, int len)
  95 {
  96         int err;
  97         struct i2c_msg msg = { .addr = state->config->demod_address,
  98                                .flags = I2C_M_RD, .buf = buf, .len = len };
  99
 100         /* msleep(20); */ /* doesn't appear to be necessary */
 101         if ((err = i2c_transfer(state->i2c, &msg, 1)) != 1) {
 102                 printk(KERN_WARNING "or51132: I2C read (addr 0x%02x len %d) error: %d\n",
 103                        msg.addr, msg.len, err);
 104                 return -EREMOTEIO;
 105         }
 106         return 0;
 107 }
 108
 109 /* Reads a 16-bit demod register.  Returns <0 on error. */
 110 static int or51132_readreg(struct or51132_state *state, u8 reg)
 111 {
 112         u8 buf[2] = { 0x04, reg };
 113         struct i2c_msg msg[2] = {
 114                 {.addr = state->config->demod_address, .flags = 0,
 115                  .buf = buf, .len = 2 },
 116                 {.addr = state->config->demod_address, .flags = I2C_M_RD,
 117                  .buf = buf, .len = 2 }};
 118         int err;
 119
 120         if ((err = i2c_transfer(state->i2c, msg, 2)) != 2) {
 121                 printk(KERN_WARNING "or51132: I2C error reading register %d: %d\n",
 122                        reg, err);
 123                 return -EREMOTEIO;
 124         }
 125         return buf[0] | (buf[1] << 8);
 126 }
 127
 128 static int or51132_load_firmware (struct dvb_frontend* fe, const struct firmware *fw)
 129 {
 130         struct or51132_state* state = fe->demodulator_priv;
 131         static const u8 run_buf[] = {0x7F,0x01};
 132         u8 rec_buf[8];
 133         u32 firmwareAsize, firmwareBsize;
 134         int i,ret;
 135
 136         dprintk("Firmware is %Zd bytes\n",fw->size);
 137
 138         /* Get size of firmware A and B */
 139         firmwareAsize = le32_to_cpu(*((__le32*)fw->data));
 140         dprintk("FirmwareA is %i bytes\n",firmwareAsize);
 141         firmwareBsize = le32_to_cpu(*((__le32*)(fw->data+4)));
 142         dprintk("FirmwareB is %i bytes\n",firmwareBsize);
 143
 144         /* Upload firmware */
 145         if ((ret = or51132_writebuf(state, &fw->data[8], firmwareAsize))) {
 146                 printk(KERN_WARNING "or51132: load_firmware error 1\n");
 147                 return ret;
 148         }
 149         if ((ret = or51132_writebuf(state, &fw->data[8+firmwareAsize],
 150                                     firmwareBsize))) {
 151                 printk(KERN_WARNING "or51132: load_firmware error 2\n");
 152                 return ret;
 153         }
 154
 155         if ((ret = or51132_writebuf(state, run_buf, 2))) {
 156                 printk(KERN_WARNING "or51132: load_firmware error 3\n");
 157                 return ret;
 158         }
 159         if ((ret = or51132_writebuf(state, run_buf, 2))) {
 160                 printk(KERN_WARNING "or51132: load_firmware error 4\n");
 161                 return ret;
 162         }
 163
 164         /* 50ms for operation to begin */
 165         msleep(50);
 166
 167         /* Read back ucode version to besure we loaded correctly and are really up and running */
 168         /* Get uCode version */
 169         if ((ret = or51132_writebytes(state, 0x10, 0x10, 0x00))) {
 170                 printk(KERN_WARNING "or51132: load_firmware error a\n");
 171                 return ret;
 172         }
 173         if ((ret = or51132_writebytes(state, 0x04, 0x17))) {
 174                 printk(KERN_WARNING "or51132: load_firmware error b\n");
 175                 return ret;
 176         }
 177         if ((ret = or51132_writebytes(state, 0x00, 0x00))) {
 178                 printk(KERN_WARNING "or51132: load_firmware error c\n");
 179                 return ret;
 180         }
 181         for (i=0;i<4;i++) {
 182                 /* Once upon a time, this command might have had something
 183                    to do with getting the firmware version, but it's
 184                    not used anymore:
 185                    {0x04,0x00,0x30,0x00,i+1} */
 186                 /* Read 8 bytes, two bytes at a time */
 187                 if ((ret = or51132_readbuf(state, &rec_buf[i*2], 2))) {
 188                         printk(KERN_WARNING
 189                                "or51132: load_firmware error d - %d\n",i);
 190                         return ret;
 191                 }
 192         }
 193
 194         printk(KERN_WARNING
 195                "or51132: Version: %02X%02X%02X%02X-%02X%02X%02X%02X (%02X%01X-%01X-%02X%01X-%01X)\n",
 196                rec_buf[1],rec_buf[0],rec_buf[3],rec_buf[2],
 197                rec_buf[5],rec_buf[4],rec_buf[7],rec_buf[6],
 198                rec_buf[3],rec_buf[2]>>4,rec_buf[2]&0x0f,
 199                rec_buf[5],rec_buf[4]>>4,rec_buf[4]&0x0f);
 200
 201         if ((ret = or51132_writebytes(state, 0x10, 0x00, 0x00))) {
 202                 printk(KERN_WARNING "or51132: load_firmware error e\n");
 203                 return ret;
 204         }
 205         return 0;
 206 };
 207
 208 static int or51132_init(struct dvb_frontend* fe)
 209 {
 210         return 0;
 211 }
 212
 213 static int or51132_read_ber(struct dvb_frontend* fe, u32* ber)
 214 {
 215         *ber = 0;
 216         return 0;
 217 }
 218
 219 static int or51132_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks)
 220 {
 221         *ucblocks = 0;
 222         return 0;
 223 }
 224
 225 static int or51132_sleep(struct dvb_frontend* fe)
 226 {
 227         return 0;
 228 }
 229
 230 static int or51132_setmode(struct dvb_frontend* fe)
 231 {
 232         struct or51132_state* state = fe->demodulator_priv;
 233         u8 cmd_buf1[3] = {0x04, 0x01, 0x5f};
 234         u8 cmd_buf2[3] = {0x1c, 0x00, 0 };
 235
 236         dprintk("setmode %d\n",(int)state->current_modulation);
 237
 238         switch (state->current_modulation) {
 239         case VSB_8:
 240                 /* Auto CH, Auto NTSC rej, MPEGser, MPEG2tr, phase noise-high */
 241                 cmd_buf1[2] = 0x50;
 242                 /* REC MODE inv IF spectrum, Normal */
 243                 cmd_buf2[1] = 0x03;
 244                 /* Channel MODE ATSC/VSB8 */
 245                 cmd_buf2[2] = 0x06;
 246                 break;
 247         /* All QAM modes are:
 248            Auto-deinterleave; MPEGser, MPEG2tr, phase noise-high
 249            REC MODE Normal Carrier Lock */
 250         case QAM_AUTO:
 251                 /* Channel MODE Auto QAM64/256 */
 252                 cmd_buf2[2] = 0x4f;
 253                 break;
 254         case QAM_256:
 255                 /* Channel MODE QAM256 */
 256                 cmd_buf2[2] = 0x45;
 257                 break;
 258         case QAM_64:
 259                 /* Channel MODE QAM64 */
 260                 cmd_buf2[2] = 0x43;
 261                 break;
 262         default:
 263                 printk(KERN_WARNING
 264                        "or51132: setmode: Modulation set to unsupported value (%d)\n",
 265                        state->current_modulation);
 266                 return -EINVAL;
 267         }
 268
 269         /* Set Receiver 1 register */
 270         if (or51132_writebuf(state, cmd_buf1, 3)) {
 271                 printk(KERN_WARNING "or51132: set_mode error 1\n");
 272                 return -EREMOTEIO;
 273         }
 274         dprintk("set #1 to %02x\n", cmd_buf1[2]);
 275
 276         /* Set operation mode in Receiver 6 register */
 277         if (or51132_writebuf(state, cmd_buf2, 3)) {
 278                 printk(KERN_WARNING "or51132: set_mode error 2\n");
 279                 return -EREMOTEIO;
 280         }
 281         dprintk("set #6 to 0x%02x%02x\n", cmd_buf2[1], cmd_buf2[2]);
 282
 283         return 0;
 284 }
 285
 286 /* Some modulations use the same firmware.  This classifies modulations
 287    by the firmware they use. */
 288 #define MOD_FWCLASS_UNKNOWN     0
 289 #define MOD_FWCLASS_VSB         1
 290 #define MOD_FWCLASS_QAM         2
 291 static int modulation_fw_class(enum fe_modulation modulation)
 292 {
 293         switch(modulation) {
 294         case VSB_8:
 295                 return MOD_FWCLASS_VSB;
 296         case QAM_AUTO:
 297         case QAM_64:
 298         case QAM_256:
 299                 return MOD_FWCLASS_QAM;
 300         default:
 301                 return MOD_FWCLASS_UNKNOWN;
 302         }
 303 }
 304
 305 static int or51132_set_parameters(struct dvb_frontend *fe)
 306 {
 307         struct dtv_frontend_properties *p = &fe->dtv_property_cache;
 308         int ret;
 309         struct or51132_state* state = fe->demodulator_priv;
 310         const struct firmware *fw;
 311         const char *fwname;
 312         int clock_mode;
 313
 314         /* Upload new firmware only if we need a different one */
 315         if (modulation_fw_class(state->current_modulation) !=
 316             modulation_fw_class(p->modulation)) {
 317                 switch (modulation_fw_class(p->modulation)) {
 318                 case MOD_FWCLASS_VSB:
 319                         dprintk("set_parameters VSB MODE\n");
 320                         fwname = OR51132_VSB_FIRMWARE;
 321
 322                         /* Set non-punctured clock for VSB */
 323                         clock_mode = 0;
 324                         break;
 325                 case MOD_FWCLASS_QAM:
 326                         dprintk("set_parameters QAM MODE\n");
 327                         fwname = OR51132_QAM_FIRMWARE;
 328
 329                         /* Set punctured clock for QAM */
 330                         clock_mode = 1;
 331                         break;
 332                 default:
 333                         printk("or51132: Modulation type(%d) UNSUPPORTED\n",
 334                                p->modulation);
 335                         return -1;
 336                 }
 337                 printk("or51132: Waiting for firmware upload(%s)...\n",
 338                        fwname);
 339                 ret = request_firmware(&fw, fwname, state->i2c->dev.parent);
 340                 if (ret) {
 341                         printk(KERN_WARNING "or51132: No firmware uploaded(timeout or file not found?)\n");
 342                         return ret;
 343                 }
 344                 ret = or51132_load_firmware(fe, fw);
 345                 release_firmware(fw);
 346                 if (ret) {
 347                         printk(KERN_WARNING "or51132: Writing firmware to device failed!\n");
 348                         return ret;
 349                 }
 350                 printk("or51132: Firmware upload complete.\n");
 351                 state->config->set_ts_params(fe, clock_mode);
 352         }
 353         /* Change only if we are actually changing the modulation */
 354         if (state->current_modulation != p->modulation) {
 355                 state->current_modulation = p->modulation;
 356                 or51132_setmode(fe);
 357         }
 358
 359         if (fe->ops.tuner_ops.set_params) {
 360                 fe->ops.tuner_ops.set_params(fe);
 361                 if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0);
 362         }
 363
 364         /* Set to current mode */
 365         or51132_setmode(fe);
 366
 367         /* Update current frequency */
 368         state->current_frequency = p->frequency;
 369         return 0;
 370 }
 371
 372 static int or51132_get_parameters(struct dvb_frontend* fe,
 373                                   struct dtv_frontend_properties *p)
 374 {
 375         struct or51132_state* state = fe->demodulator_priv;
 376         int status;
 377         int retry = 1;
 378
 379 start:
 380         /* Receiver Status */
 381         if ((status = or51132_readreg(state, 0x00)) < 0) {
 382                 printk(KERN_WARNING "or51132: get_parameters: error reading receiver status\n");
 383                 return -EREMOTEIO;
 384         }
 385         switch(status&0xff) {
 386         case 0x06:
 387                 p->modulation = VSB_8;
 388                 break;
 389         case 0x43:
 390                 p->modulation = QAM_64;
 391                 break;
 392         case 0x45:
 393                 p->modulation = QAM_256;
 394                 break;
 395         default:
 396                 if (retry--)
 397                         goto start;
 398                 printk(KERN_WARNING "or51132: unknown status 0x%02x\n",
 399                        status&0xff);
 400                 return -EREMOTEIO;
 401         }
 402
 403         /* FIXME: Read frequency from frontend, take AFC into account */
 404         p->frequency = state->current_frequency;
 405
 406         /* FIXME: How to read inversion setting? Receiver 6 register? */
 407         p->inversion = INVERSION_AUTO;
 408
 409         return 0;
 410 }
 411
 412 static int or51132_read_status(struct dvb_frontend *fe, enum fe_status *status)
 413 {
 414         struct or51132_state* state = fe->demodulator_priv;
 415         int reg;
 416
 417         /* Receiver Status */
 418         if ((reg = or51132_readreg(state, 0x00)) < 0) {
 419                 printk(KERN_WARNING "or51132: read_status: error reading receiver status: %d\n", reg);
 420                 *status = 0;
 421                 return -EREMOTEIO;
 422         }
 423         dprintk("%s: read_status %04x\n", __func__, reg);
 424
 425         if (reg & 0x0100) /* Receiver Lock */
 426                 *status = FE_HAS_SIGNAL|FE_HAS_CARRIER|FE_HAS_VITERBI|
 427                           FE_HAS_SYNC|FE_HAS_LOCK;
 428         else
 429                 *status = 0;
 430         return 0;
 431 }
 432
 433 /* Calculate SNR estimation (scaled by 2^24)
 434
 435    8-VSB SNR and QAM equations from Oren datasheets
 436
 437    For 8-VSB:
 438      SNR[dB] = 10 * log10(897152044.8282 / MSE^2 ) - K
 439
 440      Where K = 0 if NTSC rejection filter is OFF; and
 441            K = 3 if NTSC rejection filter is ON
 442
 443    For QAM64:
 444      SNR[dB] = 10 * log10(897152044.8282 / MSE^2 )
 445
 446    For QAM256:
 447      SNR[dB] = 10 * log10(907832426.314266  / MSE^2 )
 448
 449    We re-write the snr equation as:
 450      SNR * 2^24 = 10*(c - 2*intlog10(MSE))
 451    Where for QAM256, c = log10(907832426.314266) * 2^24
 452    and for 8-VSB and QAM64, c = log10(897152044.8282) * 2^24 */
 453
 454 static u32 calculate_snr(u32 mse, u32 c)
 455 {
 456         if (mse == 0) /* No signal */
 457                 return 0;
 458
 459         mse = 2*intlog10(mse);
 460         if (mse > c) {
 461                 /* Negative SNR, which is possible, but realisticly the
 462                 demod will lose lock before the signal gets this bad.  The
 463                 API only allows for unsigned values, so just return 0 */
 464                 return 0;
 465         }
 466         return 10*(c - mse);
 467 }
 468
 469 static int or51132_read_snr(struct dvb_frontend* fe, u16* snr)
 470 {
 471         struct or51132_state* state = fe->demodulator_priv;
 472         int noise, reg;
 473         u32 c, usK = 0;
 474         int retry = 1;
 475
 476 start:
 477         /* SNR after Equalizer */
 478         noise = or51132_readreg(state, 0x02);
 479         if (noise < 0) {
 480                 printk(KERN_WARNING "or51132: read_snr: error reading equalizer\n");
 481                 return -EREMOTEIO;
 482         }
 483         dprintk("read_snr noise (%d)\n", noise);
 484
 485         /* Read status, contains modulation type for QAM_AUTO and
 486            NTSC filter for VSB */
 487         reg = or51132_readreg(state, 0x00);
 488         if (reg < 0) {
 489                 printk(KERN_WARNING "or51132: read_snr: error reading receiver status\n");
 490                 return -EREMOTEIO;
 491         }
 492
 493         switch (reg&0xff) {
 494         case 0x06:
 495                 if (reg & 0x1000) usK = 3 << 24;
 496                 /* Fall through to QAM64 case */
 497         case 0x43:
 498                 c = 150204167;
 499                 break;
 500         case 0x45:
 501                 c = 150290396;
 502                 break;
 503         default:
 504                 printk(KERN_WARNING "or51132: unknown status 0x%02x\n", reg&0xff);
 505                 if (retry--) goto start;
 506                 return -EREMOTEIO;
 507         }
 508         dprintk("%s: modulation %02x, NTSC rej O%s\n", __func__,
 509                 reg&0xff, reg&0x1000?"n":"ff");
 510
 511         /* Calculate SNR using noise, c, and NTSC rejection correction */
 512         state->snr = calculate_snr(noise, c) - usK;
 513         *snr = (state->snr) >> 16;
 514
 515         dprintk("%s: noise = 0x%08x, snr = %d.%02d dB\n", __func__, noise,
 516                 state->snr >> 24, (((state->snr>>8) & 0xffff) * 100) >> 16);
 517
 518         return 0;
 519 }
 520
 521 static int or51132_read_signal_strength(struct dvb_frontend* fe, u16* strength)
 522 {
 523         /* Calculate Strength from SNR up to 35dB */
 524         /* Even though the SNR can go higher than 35dB, there is some comfort */
 525         /* factor in having a range of strong signals that can show at 100%   */
 526         struct or51132_state* state = (struct or51132_state*) fe->demodulator_priv;
 527         u16 snr;
 528         int ret;
 529
 530         ret = fe->ops.read_snr(fe, &snr);
 531         if (ret != 0)
 532                 return ret;
 533         /* Rather than use the 8.8 value snr, use state->snr which is 8.24 */
 534         /* scale the range 0 - 35*2^24 into 0 - 65535 */
 535         if (state->snr >= 8960 * 0x10000)
 536                 *strength = 0xffff;
 537         else
 538                 *strength = state->snr / 8960;
 539
 540         return 0;
 541 }
 542
 543 static int or51132_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings* fe_tune_settings)
 544 {
 545         fe_tune_settings->min_delay_ms = 500;
 546         fe_tune_settings->step_size = 0;
 547         fe_tune_settings->max_drift = 0;
 548
 549         return 0;
 550 }
 551
 552 static void or51132_release(struct dvb_frontend* fe)
 553 {
 554         struct or51132_state* state = fe->demodulator_priv;
 555         kfree(state);
 556 }
 557
 558 static const struct dvb_frontend_ops or51132_ops;
 559
 560 struct dvb_frontend* or51132_attach(const struct or51132_config* config,
 561                                     struct i2c_adapter* i2c)
 562 {
 563         struct or51132_state* state = NULL;
 564
 565         /* Allocate memory for the internal state */
 566         state = kzalloc(sizeof(struct or51132_state), GFP_KERNEL);
 567         if (state == NULL)
 568                 return NULL;
 569
 570         /* Setup the state */
 571         state->config = config;
 572         state->i2c = i2c;
 573         state->current_frequency = -1;
 574         state->current_modulation = -1;
 575
 576         /* Create dvb_frontend */
 577         memcpy(&state->frontend.ops, &or51132_ops, sizeof(struct dvb_frontend_ops));
 578         state->frontend.demodulator_priv = state;
 579         return &state->frontend;
 580 }
 581
 582 static const struct dvb_frontend_ops or51132_ops = {
 583         .delsys = { SYS_ATSC, SYS_DVBC_ANNEX_B },
 584         .info = {
 585                 .name                   = "Oren OR51132 VSB/QAM Frontend",
 586                 .frequency_min          = 44000000,
 587                 .frequency_max          = 958000000,
 588                 .frequency_stepsize     = 166666,
 589                 .caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
 590                         FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
 591                         FE_CAN_QAM_64 | FE_CAN_QAM_256 | FE_CAN_QAM_AUTO |
 592                         FE_CAN_8VSB
 593         },
 594
 595         .release = or51132_release,
 596
 597         .init = or51132_init,
 598         .sleep = or51132_sleep,
 599
 600         .set_frontend = or51132_set_parameters,
 601         .get_frontend = or51132_get_parameters,
 602         .get_tune_settings = or51132_get_tune_settings,
 603
 604         .read_status = or51132_read_status,
 605         .read_ber = or51132_read_ber,
 606         .read_signal_strength = or51132_read_signal_strength,
 607         .read_snr = or51132_read_snr,
 608         .read_ucblocks = or51132_read_ucblocks,
 609 };
 610
 611 module_param(debug, int, 0644);
 612 MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off).");
 613
 614 MODULE_DESCRIPTION("OR51132 ATSC [pcHDTV HD-3000] (8VSB & ITU J83 AnnexB FEC QAM64/256) Demodulator Driver");
 615 MODULE_AUTHOR("Kirk Lapray");
 616 MODULE_AUTHOR("Trent Piepho");
 617 MODULE_LICENSE("GPL");
 618
 619 EXPORT_SYMBOL(or51132_attach);