1/* 2 Driver for STV0297 demodulator 3 4 Copyright (C) 2004 Andrew de Quincey <adq_dvb@lidskialf.net> 5 Copyright (C) 2003-2004 Dennis Noermann <dennis.noermann@noernet.de> 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 2 of the License, or 10 (at your option) any later version. 11 12 This program is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this program; if not, write to the Free Software 19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 20*/ 21 22#include <linux/init.h> 23#include <linux/kernel.h> 24#include <linux/module.h> 25#include <linux/string.h> 26#include <linux/delay.h> 27#include <linux/jiffies.h> 28#include <linux/slab.h> 29 30#include "dvb_frontend.h" 31#include "stv0297.h" 32 33struct stv0297_state { 34 struct i2c_adapter *i2c; 35 const struct stv0297_config *config; 36 struct dvb_frontend frontend; 37 38 unsigned long last_ber; 39 unsigned long base_freq; 40}; 41 42#if 1 43#define dprintk(x...) printk(x) 44#else 45#define dprintk(x...) 46#endif 47 48#define STV0297_CLOCK_KHZ 28900 49 50 51static int stv0297_writereg(struct stv0297_state *state, u8 reg, u8 data) 52{ 53 int ret; 54 u8 buf[] = { reg, data }; 55 struct i2c_msg msg = {.addr = state->config->demod_address,.flags = 0,.buf = buf,.len = 2 }; 56 57 ret = i2c_transfer(state->i2c, &msg, 1); 58 59 if (ret != 1) 60 dprintk("%s: writereg error (reg == 0x%02x, val == 0x%02x, " 61 "ret == %i)\n", __func__, reg, data, ret); 62 63 return (ret != 1) ? -1 : 0; 64} 65 66static int stv0297_readreg(struct stv0297_state *state, u8 reg) 67{ 68 int ret; 69 u8 b0[] = { reg }; 70 u8 b1[] = { 0 }; 71 struct i2c_msg msg[] = { {.addr = state->config->demod_address,.flags = 0,.buf = b0,.len = 1}, 72 {.addr = state->config->demod_address,.flags = I2C_M_RD,.buf = b1,.len = 1} 73 }; 74 75 // this device needs a STOP between the register and data 76 if (state->config->stop_during_read) { 77 if ((ret = i2c_transfer(state->i2c, &msg[0], 1)) != 1) { 78 dprintk("%s: readreg error (reg == 0x%02x, ret == %i)\n", __func__, reg, ret); 79 return -1; 80 } 81 if ((ret = i2c_transfer(state->i2c, &msg[1], 1)) != 1) { 82 dprintk("%s: readreg error (reg == 0x%02x, ret == %i)\n", __func__, reg, ret); 83 return -1; 84 } 85 } else { 86 if ((ret = i2c_transfer(state->i2c, msg, 2)) != 2) { 87 dprintk("%s: readreg error (reg == 0x%02x, ret == %i)\n", __func__, reg, ret); 88 return -1; 89 } 90 } 91 92 return b1[0]; 93} 94 95static int stv0297_writereg_mask(struct stv0297_state *state, u8 reg, u8 mask, u8 data) 96{ 97 int val; 98 99 val = stv0297_readreg(state, reg); 100 val &= ~mask; 101 val |= (data & mask); 102 stv0297_writereg(state, reg, val); 103 104 return 0; 105} 106 107static int stv0297_readregs(struct stv0297_state *state, u8 reg1, u8 * b, u8 len) 108{ 109 int ret; 110 struct i2c_msg msg[] = { {.addr = state->config->demod_address,.flags = 0,.buf = 111 ®1,.len = 1}, 112 {.addr = state->config->demod_address,.flags = I2C_M_RD,.buf = b,.len = len} 113 }; 114 115 // this device needs a STOP between the register and data 116 if (state->config->stop_during_read) { 117 if ((ret = i2c_transfer(state->i2c, &msg[0], 1)) != 1) { 118 dprintk("%s: readreg error (reg == 0x%02x, ret == %i)\n", __func__, reg1, ret); 119 return -1; 120 } 121 if ((ret = i2c_transfer(state->i2c, &msg[1], 1)) != 1) { 122 dprintk("%s: readreg error (reg == 0x%02x, ret == %i)\n", __func__, reg1, ret); 123 return -1; 124 } 125 } else { 126 if ((ret = i2c_transfer(state->i2c, msg, 2)) != 2) { 127 dprintk("%s: readreg error (reg == 0x%02x, ret == %i)\n", __func__, reg1, ret); 128 return -1; 129 } 130 } 131 132 return 0; 133} 134 135static u32 stv0297_get_symbolrate(struct stv0297_state *state) 136{ 137 u64 tmp; 138 139 tmp = stv0297_readreg(state, 0x55); 140 tmp |= stv0297_readreg(state, 0x56) << 8; 141 tmp |= stv0297_readreg(state, 0x57) << 16; 142 tmp |= stv0297_readreg(state, 0x58) << 24; 143 144 tmp *= STV0297_CLOCK_KHZ; 145 tmp >>= 32; 146 147 return (u32) tmp; 148} 149 150static void stv0297_set_symbolrate(struct stv0297_state *state, u32 srate) 151{ 152 long tmp; 153 154 tmp = 131072L * srate; /* 131072 = 2^17 */ 155 tmp = tmp / (STV0297_CLOCK_KHZ / 4); /* 1/4 = 2^-2 */ 156 tmp = tmp * 8192L; /* 8192 = 2^13 */ 157 158 stv0297_writereg(state, 0x55, (unsigned char) (tmp & 0xFF)); 159 stv0297_writereg(state, 0x56, (unsigned char) (tmp >> 8)); 160 stv0297_writereg(state, 0x57, (unsigned char) (tmp >> 16)); 161 stv0297_writereg(state, 0x58, (unsigned char) (tmp >> 24)); 162} 163 164static void stv0297_set_sweeprate(struct stv0297_state *state, short fshift, long symrate) 165{ 166 long tmp; 167 168 tmp = (long) fshift *262144L; /* 262144 = 2*18 */ 169 tmp /= symrate; 170 tmp *= 1024; /* 1024 = 2*10 */ 171 172 // adjust 173 if (tmp >= 0) { 174 tmp += 500000; 175 } else { 176 tmp -= 500000; 177 } 178 tmp /= 1000000; 179 180 stv0297_writereg(state, 0x60, tmp & 0xFF); 181 stv0297_writereg_mask(state, 0x69, 0xF0, (tmp >> 4) & 0xf0); 182} 183 184static void stv0297_set_carrieroffset(struct stv0297_state *state, long offset) 185{ 186 long tmp; 187 188 /* symrate is hardcoded to 10000 */ 189 tmp = offset * 26844L; /* (2**28)/10000 */ 190 if (tmp < 0) 191 tmp += 0x10000000; 192 tmp &= 0x0FFFFFFF; 193 194 stv0297_writereg(state, 0x66, (unsigned char) (tmp & 0xFF)); 195 stv0297_writereg(state, 0x67, (unsigned char) (tmp >> 8)); 196 stv0297_writereg(state, 0x68, (unsigned char) (tmp >> 16)); 197 stv0297_writereg_mask(state, 0x69, 0x0F, (tmp >> 24) & 0x0f); 198} 199 200/* 201static long stv0297_get_carrieroffset(struct stv0297_state *state) 202{ 203 s64 tmp; 204 205 stv0297_writereg(state, 0x6B, 0x00); 206 207 tmp = stv0297_readreg(state, 0x66); 208 tmp |= (stv0297_readreg(state, 0x67) << 8); 209 tmp |= (stv0297_readreg(state, 0x68) << 16); 210 tmp |= (stv0297_readreg(state, 0x69) & 0x0F) << 24; 211 212 tmp *= stv0297_get_symbolrate(state); 213 tmp >>= 28; 214 215 return (s32) tmp; 216} 217*/ 218 219static void stv0297_set_initialdemodfreq(struct stv0297_state *state, long freq) 220{ 221 s32 tmp; 222 223 if (freq > 10000) 224 freq -= STV0297_CLOCK_KHZ; 225 226 tmp = (STV0297_CLOCK_KHZ * 1000) / (1 << 16); 227 tmp = (freq * 1000) / tmp; 228 if (tmp > 0xffff) 229 tmp = 0xffff; 230 231 stv0297_writereg_mask(state, 0x25, 0x80, 0x80); 232 stv0297_writereg(state, 0x21, tmp >> 8); 233 stv0297_writereg(state, 0x20, tmp); 234} 235 236static int stv0297_set_qam(struct stv0297_state *state, fe_modulation_t modulation) 237{ 238 int val = 0; 239 240 switch (modulation) { 241 case QAM_16: 242 val = 0; 243 break; 244 245 case QAM_32: 246 val = 1; 247 break; 248 249 case QAM_64: 250 val = 4; 251 break; 252 253 case QAM_128: 254 val = 2; 255 break; 256 257 case QAM_256: 258 val = 3; 259 break; 260 261 default: 262 return -EINVAL; 263 } 264 265 stv0297_writereg_mask(state, 0x00, 0x70, val << 4); 266 267 return 0; 268} 269 270static int stv0297_set_inversion(struct stv0297_state *state, fe_spectral_inversion_t inversion) 271{ 272 int val = 0; 273 274 switch (inversion) { 275 case INVERSION_OFF: 276 val = 0; 277 break; 278 279 case INVERSION_ON: 280 val = 1; 281 break; 282 283 default: 284 return -EINVAL; 285 } 286 287 stv0297_writereg_mask(state, 0x83, 0x08, val << 3); 288 289 return 0; 290} 291 292static int stv0297_i2c_gate_ctrl(struct dvb_frontend *fe, int enable) 293{ 294 struct stv0297_state *state = fe->demodulator_priv; 295 296 if (enable) { 297 stv0297_writereg(state, 0x87, 0x78); 298 stv0297_writereg(state, 0x86, 0xc8); 299 } 300 301 return 0; 302} 303 304static int stv0297_init(struct dvb_frontend *fe) 305{ 306 struct stv0297_state *state = fe->demodulator_priv; 307 int i; 308 309 /* load init table */ 310 for (i=0; !(state->config->inittab[i] == 0xff && state->config->inittab[i+1] == 0xff); i+=2) 311 stv0297_writereg(state, state->config->inittab[i], state->config->inittab[i+1]); 312 msleep(200); 313 314 state->last_ber = 0; 315 316 return 0; 317} 318 319static int stv0297_sleep(struct dvb_frontend *fe) 320{ 321 struct stv0297_state *state = fe->demodulator_priv; 322 323 stv0297_writereg_mask(state, 0x80, 1, 1); 324 325 return 0; 326} 327 328static int stv0297_read_status(struct dvb_frontend *fe, fe_status_t * status) 329{ 330 struct stv0297_state *state = fe->demodulator_priv; 331 332 u8 sync = stv0297_readreg(state, 0xDF); 333 334 *status = 0; 335 if (sync & 0x80) 336 *status |= 337 FE_HAS_SYNC | FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI | FE_HAS_LOCK; 338 return 0; 339} 340 341static int stv0297_read_ber(struct dvb_frontend *fe, u32 * ber) 342{ 343 struct stv0297_state *state = fe->demodulator_priv; 344 u8 BER[3]; 345 346 stv0297_readregs(state, 0xA0, BER, 3); 347 if (!(BER[0] & 0x80)) { 348 state->last_ber = BER[2] << 8 | BER[1]; 349 stv0297_writereg_mask(state, 0xA0, 0x80, 0x80); 350 } 351 352 *ber = state->last_ber; 353 354 return 0; 355} 356 357 358static int stv0297_read_signal_strength(struct dvb_frontend *fe, u16 * strength) 359{ 360 struct stv0297_state *state = fe->demodulator_priv; 361 u8 STRENGTH[3]; 362 u16 tmp; 363 364 stv0297_readregs(state, 0x41, STRENGTH, 3); 365 tmp = (STRENGTH[1] & 0x03) << 8 | STRENGTH[0]; 366 if (STRENGTH[2] & 0x20) { 367 if (tmp < 0x200) 368 tmp = 0; 369 else 370 tmp = tmp - 0x200; 371 } else { 372 if (tmp > 0x1ff) 373 tmp = 0; 374 else 375 tmp = 0x1ff - tmp; 376 } 377 *strength = (tmp << 7) | (tmp >> 2); 378 return 0; 379} 380 381static int stv0297_read_snr(struct dvb_frontend *fe, u16 * snr) 382{ 383 struct stv0297_state *state = fe->demodulator_priv; 384 u8 SNR[2]; 385 386 stv0297_readregs(state, 0x07, SNR, 2); 387 *snr = SNR[1] << 8 | SNR[0]; 388 389 return 0; 390} 391 392static int stv0297_read_ucblocks(struct dvb_frontend *fe, u32 * ucblocks) 393{ 394 struct stv0297_state *state = fe->demodulator_priv; 395 396 stv0297_writereg_mask(state, 0xDF, 0x03, 0x03); /* freeze the counters */ 397 398 *ucblocks = (stv0297_readreg(state, 0xD5) << 8) 399 | stv0297_readreg(state, 0xD4); 400 401 stv0297_writereg_mask(state, 0xDF, 0x03, 0x02); /* clear the counters */ 402 stv0297_writereg_mask(state, 0xDF, 0x03, 0x01); /* re-enable the counters */ 403 404 return 0; 405} 406 407static int stv0297_set_frontend(struct dvb_frontend *fe) 408{ 409 struct dtv_frontend_properties *p = &fe->dtv_property_cache; 410 struct stv0297_state *state = fe->demodulator_priv; 411 int u_threshold; 412 int initial_u; 413 int blind_u; 414 int delay; 415 int sweeprate; 416 int carrieroffset; 417 unsigned long timeout; 418 fe_spectral_inversion_t inversion; 419 420 switch (p->modulation) { 421 case QAM_16: 422 case QAM_32: 423 case QAM_64: 424 delay = 100; 425 sweeprate = 1000; 426 break; 427 428 case QAM_128: 429 case QAM_256: 430 delay = 200; 431 sweeprate = 500; 432 break; 433 434 default: 435 return -EINVAL; 436 } 437 438 // determine inversion dependent parameters 439 inversion = p->inversion; 440 if (state->config->invert) 441 inversion = (inversion == INVERSION_ON) ? INVERSION_OFF : INVERSION_ON; 442 carrieroffset = -330; 443 switch (inversion) { 444 case INVERSION_OFF: 445 break; 446 447 case INVERSION_ON: 448 sweeprate = -sweeprate; 449 carrieroffset = -carrieroffset; 450 break; 451 452 default: 453 return -EINVAL; 454 } 455 456 stv0297_init(fe); 457 if (fe->ops.tuner_ops.set_params) { 458 fe->ops.tuner_ops.set_params(fe); 459 if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0); 460 } 461 462 /* clear software interrupts */ 463 stv0297_writereg(state, 0x82, 0x0); 464 465 /* set initial demodulation frequency */ 466 stv0297_set_initialdemodfreq(state, 7250); 467 468 /* setup AGC */ 469 stv0297_writereg_mask(state, 0x43, 0x10, 0x00); 470 stv0297_writereg(state, 0x41, 0x00); 471 stv0297_writereg_mask(state, 0x42, 0x03, 0x01); 472 stv0297_writereg_mask(state, 0x36, 0x60, 0x00); 473 stv0297_writereg_mask(state, 0x36, 0x18, 0x00); 474 stv0297_writereg_mask(state, 0x71, 0x80, 0x80); 475 stv0297_writereg(state, 0x72, 0x00); 476 stv0297_writereg(state, 0x73, 0x00); 477 stv0297_writereg_mask(state, 0x74, 0x0F, 0x00); 478 stv0297_writereg_mask(state, 0x43, 0x08, 0x00); 479 stv0297_writereg_mask(state, 0x71, 0x80, 0x00); 480 481 /* setup STL */ 482 stv0297_writereg_mask(state, 0x5a, 0x20, 0x20); 483 stv0297_writereg_mask(state, 0x5b, 0x02, 0x02); 484 stv0297_writereg_mask(state, 0x5b, 0x02, 0x00); 485 stv0297_writereg_mask(state, 0x5b, 0x01, 0x00); 486 stv0297_writereg_mask(state, 0x5a, 0x40, 0x40); 487 488 /* disable frequency sweep */ 489 stv0297_writereg_mask(state, 0x6a, 0x01, 0x00); 490 491 /* reset deinterleaver */ 492 stv0297_writereg_mask(state, 0x81, 0x01, 0x01); 493 stv0297_writereg_mask(state, 0x81, 0x01, 0x00); 494 495 /* ??? */ 496 stv0297_writereg_mask(state, 0x83, 0x20, 0x20); 497 stv0297_writereg_mask(state, 0x83, 0x20, 0x00); 498 499 /* reset equaliser */ 500 u_threshold = stv0297_readreg(state, 0x00) & 0xf; 501 initial_u = stv0297_readreg(state, 0x01) >> 4; 502 blind_u = stv0297_readreg(state, 0x01) & 0xf; 503 stv0297_writereg_mask(state, 0x84, 0x01, 0x01); 504 stv0297_writereg_mask(state, 0x84, 0x01, 0x00); 505 stv0297_writereg_mask(state, 0x00, 0x0f, u_threshold); 506 stv0297_writereg_mask(state, 0x01, 0xf0, initial_u << 4); 507 stv0297_writereg_mask(state, 0x01, 0x0f, blind_u); 508 509 /* data comes from internal A/D */ 510 stv0297_writereg_mask(state, 0x87, 0x80, 0x00); 511 512 /* clear phase registers */ 513 stv0297_writereg(state, 0x63, 0x00); 514 stv0297_writereg(state, 0x64, 0x00); 515 stv0297_writereg(state, 0x65, 0x00); 516 stv0297_writereg(state, 0x66, 0x00); 517 stv0297_writereg(state, 0x67, 0x00); 518 stv0297_writereg(state, 0x68, 0x00); 519 stv0297_writereg_mask(state, 0x69, 0x0f, 0x00); 520 521 /* set parameters */ 522 stv0297_set_qam(state, p->modulation); 523 stv0297_set_symbolrate(state, p->symbol_rate / 1000); 524 stv0297_set_sweeprate(state, sweeprate, p->symbol_rate / 1000); 525 stv0297_set_carrieroffset(state, carrieroffset); 526 stv0297_set_inversion(state, inversion); 527 528 /* kick off lock */ 529 /* Disable corner detection for higher QAMs */ 530 if (p->modulation == QAM_128 || 531 p->modulation == QAM_256) 532 stv0297_writereg_mask(state, 0x88, 0x08, 0x00); 533 else 534 stv0297_writereg_mask(state, 0x88, 0x08, 0x08); 535 536 stv0297_writereg_mask(state, 0x5a, 0x20, 0x00); 537 stv0297_writereg_mask(state, 0x6a, 0x01, 0x01); 538 stv0297_writereg_mask(state, 0x43, 0x40, 0x40); 539 stv0297_writereg_mask(state, 0x5b, 0x30, 0x00); 540 stv0297_writereg_mask(state, 0x03, 0x0c, 0x0c); 541 stv0297_writereg_mask(state, 0x03, 0x03, 0x03); 542 stv0297_writereg_mask(state, 0x43, 0x10, 0x10); 543 544 /* wait for WGAGC lock */ 545 timeout = jiffies + msecs_to_jiffies(2000); 546 while (time_before(jiffies, timeout)) { 547 msleep(10); 548 if (stv0297_readreg(state, 0x43) & 0x08) 549 break; 550 } 551 if (time_after(jiffies, timeout)) { 552 goto timeout; 553 } 554 msleep(20); 555 556 /* wait for equaliser partial convergence */ 557 timeout = jiffies + msecs_to_jiffies(500); 558 while (time_before(jiffies, timeout)) { 559 msleep(10); 560 561 if (stv0297_readreg(state, 0x82) & 0x04) { 562 break; 563 } 564 } 565 if (time_after(jiffies, timeout)) { 566 goto timeout; 567 } 568 569 /* wait for equaliser full convergence */ 570 timeout = jiffies + msecs_to_jiffies(delay); 571 while (time_before(jiffies, timeout)) { 572 msleep(10); 573 574 if (stv0297_readreg(state, 0x82) & 0x08) { 575 break; 576 } 577 } 578 if (time_after(jiffies, timeout)) { 579 goto timeout; 580 } 581 582 /* disable sweep */ 583 stv0297_writereg_mask(state, 0x6a, 1, 0); 584 stv0297_writereg_mask(state, 0x88, 8, 0); 585 586 /* wait for main lock */ 587 timeout = jiffies + msecs_to_jiffies(20); 588 while (time_before(jiffies, timeout)) { 589 msleep(10); 590 591 if (stv0297_readreg(state, 0xDF) & 0x80) { 592 break; 593 } 594 } 595 if (time_after(jiffies, timeout)) { 596 goto timeout; 597 } 598 msleep(100); 599 600 /* is it still locked after that delay? */ 601 if (!(stv0297_readreg(state, 0xDF) & 0x80)) { 602 goto timeout; 603 } 604 605 /* success!! */ 606 stv0297_writereg_mask(state, 0x5a, 0x40, 0x00); 607 state->base_freq = p->frequency; 608 return 0; 609 610timeout: 611 stv0297_writereg_mask(state, 0x6a, 0x01, 0x00); 612 return 0; 613} 614 615static int stv0297_get_frontend(struct dvb_frontend *fe) 616{ 617 struct dtv_frontend_properties *p = &fe->dtv_property_cache; 618 struct stv0297_state *state = fe->demodulator_priv; 619 int reg_00, reg_83; 620 621 reg_00 = stv0297_readreg(state, 0x00); 622 reg_83 = stv0297_readreg(state, 0x83); 623 624 p->frequency = state->base_freq; 625 p->inversion = (reg_83 & 0x08) ? INVERSION_ON : INVERSION_OFF; 626 if (state->config->invert) 627 p->inversion = (p->inversion == INVERSION_ON) ? INVERSION_OFF : INVERSION_ON; 628 p->symbol_rate = stv0297_get_symbolrate(state) * 1000; 629 p->fec_inner = FEC_NONE; 630 631 switch ((reg_00 >> 4) & 0x7) { 632 case 0: 633 p->modulation = QAM_16; 634 break; 635 case 1: 636 p->modulation = QAM_32; 637 break; 638 case 2: 639 p->modulation = QAM_128; 640 break; 641 case 3: 642 p->modulation = QAM_256; 643 break; 644 case 4: 645 p->modulation = QAM_64; 646 break; 647 } 648 649 return 0; 650} 651 652static void stv0297_release(struct dvb_frontend *fe) 653{ 654 struct stv0297_state *state = fe->demodulator_priv; 655 kfree(state); 656} 657 658static struct dvb_frontend_ops stv0297_ops; 659 660struct dvb_frontend *stv0297_attach(const struct stv0297_config *config, 661 struct i2c_adapter *i2c) 662{ 663 struct stv0297_state *state = NULL; 664 665 /* allocate memory for the internal state */ 666 state = kzalloc(sizeof(struct stv0297_state), GFP_KERNEL); 667 if (state == NULL) 668 goto error; 669 670 /* setup the state */ 671 state->config = config; 672 state->i2c = i2c; 673 state->last_ber = 0; 674 state->base_freq = 0; 675 676 /* check if the demod is there */ 677 if ((stv0297_readreg(state, 0x80) & 0x70) != 0x20) 678 goto error; 679 680 /* create dvb_frontend */ 681 memcpy(&state->frontend.ops, &stv0297_ops, sizeof(struct dvb_frontend_ops)); 682 state->frontend.demodulator_priv = state; 683 return &state->frontend; 684 685error: 686 kfree(state); 687 return NULL; 688} 689 690static struct dvb_frontend_ops stv0297_ops = { 691 .delsys = { SYS_DVBC_ANNEX_A }, 692 .info = { 693 .name = "ST STV0297 DVB-C", 694 .frequency_min = 47000000, 695 .frequency_max = 862000000, 696 .frequency_stepsize = 62500, 697 .symbol_rate_min = 870000, 698 .symbol_rate_max = 11700000, 699 .caps = FE_CAN_QAM_16 | FE_CAN_QAM_32 | FE_CAN_QAM_64 | 700 FE_CAN_QAM_128 | FE_CAN_QAM_256 | FE_CAN_FEC_AUTO}, 701 702 .release = stv0297_release, 703 704 .init = stv0297_init, 705 .sleep = stv0297_sleep, 706 .i2c_gate_ctrl = stv0297_i2c_gate_ctrl, 707 708 .set_frontend = stv0297_set_frontend, 709 .get_frontend = stv0297_get_frontend, 710 711 .read_status = stv0297_read_status, 712 .read_ber = stv0297_read_ber, 713 .read_signal_strength = stv0297_read_signal_strength, 714 .read_snr = stv0297_read_snr, 715 .read_ucblocks = stv0297_read_ucblocks, 716}; 717 718MODULE_DESCRIPTION("ST STV0297 DVB-C Demodulator driver"); 719MODULE_AUTHOR("Dennis Noermann and Andrew de Quincey"); 720MODULE_LICENSE("GPL"); 721 722EXPORT_SYMBOL(stv0297_attach); 723