tda10086.c (18527B)
1// SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 Driver for Philips tda10086 DVBS Demodulator 4 5 (c) 2006 Andrew de Quincey 6 7 8 */ 9 10#include <linux/init.h> 11#include <linux/module.h> 12#include <linux/device.h> 13#include <linux/jiffies.h> 14#include <linux/string.h> 15#include <linux/slab.h> 16 17#include <media/dvb_frontend.h> 18#include "tda10086.h" 19 20#define SACLK 96000000U 21 22struct tda10086_state { 23 struct i2c_adapter* i2c; 24 const struct tda10086_config* config; 25 struct dvb_frontend frontend; 26 27 /* private demod data */ 28 u32 frequency; 29 u32 symbol_rate; 30 bool has_lock; 31}; 32 33static int debug; 34#define dprintk(args...) \ 35 do { \ 36 if (debug) printk(KERN_DEBUG "tda10086: " args); \ 37 } while (0) 38 39static int tda10086_write_byte(struct tda10086_state *state, int reg, int data) 40{ 41 int ret; 42 u8 b0[] = { reg, data }; 43 struct i2c_msg msg = { .flags = 0, .buf = b0, .len = 2 }; 44 45 msg.addr = state->config->demod_address; 46 ret = i2c_transfer(state->i2c, &msg, 1); 47 48 if (ret != 1) 49 dprintk("%s: error reg=0x%x, data=0x%x, ret=%i\n", 50 __func__, reg, data, ret); 51 52 return (ret != 1) ? ret : 0; 53} 54 55static int tda10086_read_byte(struct tda10086_state *state, int reg) 56{ 57 int ret; 58 u8 b0[] = { reg }; 59 u8 b1[] = { 0 }; 60 struct i2c_msg msg[] = {{ .flags = 0, .buf = b0, .len = 1 }, 61 { .flags = I2C_M_RD, .buf = b1, .len = 1 }}; 62 63 msg[0].addr = state->config->demod_address; 64 msg[1].addr = state->config->demod_address; 65 ret = i2c_transfer(state->i2c, msg, 2); 66 67 if (ret != 2) { 68 dprintk("%s: error reg=0x%x, ret=%i\n", __func__, reg, 69 ret); 70 return ret; 71 } 72 73 return b1[0]; 74} 75 76static int tda10086_write_mask(struct tda10086_state *state, int reg, int mask, int data) 77{ 78 int val; 79 80 /* read a byte and check */ 81 val = tda10086_read_byte(state, reg); 82 if (val < 0) 83 return val; 84 85 /* mask if off */ 86 val = val & ~mask; 87 val |= data & 0xff; 88 89 /* write it out again */ 90 return tda10086_write_byte(state, reg, val); 91} 92 93static int tda10086_init(struct dvb_frontend* fe) 94{ 95 struct tda10086_state* state = fe->demodulator_priv; 96 u8 t22k_off = 0x80; 97 98 dprintk ("%s\n", __func__); 99 100 if (state->config->diseqc_tone) 101 t22k_off = 0; 102 /* reset */ 103 tda10086_write_byte(state, 0x00, 0x00); 104 msleep(10); 105 106 /* misc setup */ 107 tda10086_write_byte(state, 0x01, 0x94); 108 tda10086_write_byte(state, 0x02, 0x35); /* NOTE: TT drivers appear to disable CSWP */ 109 tda10086_write_byte(state, 0x03, 0xe4); 110 tda10086_write_byte(state, 0x04, 0x43); 111 tda10086_write_byte(state, 0x0c, 0x0c); 112 tda10086_write_byte(state, 0x1b, 0xb0); /* noise threshold */ 113 tda10086_write_byte(state, 0x20, 0x89); /* misc */ 114 tda10086_write_byte(state, 0x30, 0x04); /* acquisition period length */ 115 tda10086_write_byte(state, 0x32, 0x00); /* irq off */ 116 tda10086_write_byte(state, 0x31, 0x56); /* setup AFC */ 117 118 /* setup PLL (this assumes SACLK = 96MHz) */ 119 tda10086_write_byte(state, 0x55, 0x2c); /* misc PLL setup */ 120 if (state->config->xtal_freq == TDA10086_XTAL_16M) { 121 tda10086_write_byte(state, 0x3a, 0x0b); /* M=12 */ 122 tda10086_write_byte(state, 0x3b, 0x01); /* P=2 */ 123 } else { 124 tda10086_write_byte(state, 0x3a, 0x17); /* M=24 */ 125 tda10086_write_byte(state, 0x3b, 0x00); /* P=1 */ 126 } 127 tda10086_write_mask(state, 0x55, 0x20, 0x00); /* powerup PLL */ 128 129 /* setup TS interface */ 130 tda10086_write_byte(state, 0x11, 0x81); 131 tda10086_write_byte(state, 0x12, 0x81); 132 tda10086_write_byte(state, 0x19, 0x40); /* parallel mode A + MSBFIRST */ 133 tda10086_write_byte(state, 0x56, 0x80); /* powerdown WPLL - unused in the mode we use */ 134 tda10086_write_byte(state, 0x57, 0x08); /* bypass WPLL - unused in the mode we use */ 135 tda10086_write_byte(state, 0x10, 0x2a); 136 137 /* setup ADC */ 138 tda10086_write_byte(state, 0x58, 0x61); /* ADC setup */ 139 tda10086_write_mask(state, 0x58, 0x01, 0x00); /* powerup ADC */ 140 141 /* setup AGC */ 142 tda10086_write_byte(state, 0x05, 0x0B); 143 tda10086_write_byte(state, 0x37, 0x63); 144 tda10086_write_byte(state, 0x3f, 0x0a); /* NOTE: flydvb varies it */ 145 tda10086_write_byte(state, 0x40, 0x64); 146 tda10086_write_byte(state, 0x41, 0x4f); 147 tda10086_write_byte(state, 0x42, 0x43); 148 149 /* setup viterbi */ 150 tda10086_write_byte(state, 0x1a, 0x11); /* VBER 10^6, DVB, QPSK */ 151 152 /* setup carrier recovery */ 153 tda10086_write_byte(state, 0x3d, 0x80); 154 155 /* setup SEC */ 156 tda10086_write_byte(state, 0x36, t22k_off); /* all SEC off, 22k tone */ 157 tda10086_write_byte(state, 0x34, (((1<<19) * (22000/1000)) / (SACLK/1000))); 158 tda10086_write_byte(state, 0x35, (((1<<19) * (22000/1000)) / (SACLK/1000)) >> 8); 159 160 return 0; 161} 162 163static void tda10086_diseqc_wait(struct tda10086_state *state) 164{ 165 unsigned long timeout = jiffies + msecs_to_jiffies(200); 166 while (!(tda10086_read_byte(state, 0x50) & 0x01)) { 167 if(time_after(jiffies, timeout)) { 168 printk("%s: diseqc queue not ready, command may be lost.\n", __func__); 169 break; 170 } 171 msleep(10); 172 } 173} 174 175static int tda10086_set_tone(struct dvb_frontend *fe, 176 enum fe_sec_tone_mode tone) 177{ 178 struct tda10086_state* state = fe->demodulator_priv; 179 u8 t22k_off = 0x80; 180 181 dprintk ("%s\n", __func__); 182 183 if (state->config->diseqc_tone) 184 t22k_off = 0; 185 186 switch (tone) { 187 case SEC_TONE_OFF: 188 tda10086_write_byte(state, 0x36, t22k_off); 189 break; 190 191 case SEC_TONE_ON: 192 tda10086_write_byte(state, 0x36, 0x01 + t22k_off); 193 break; 194 } 195 196 return 0; 197} 198 199static int tda10086_send_master_cmd (struct dvb_frontend* fe, 200 struct dvb_diseqc_master_cmd* cmd) 201{ 202 struct tda10086_state* state = fe->demodulator_priv; 203 int i; 204 u8 oldval; 205 u8 t22k_off = 0x80; 206 207 dprintk ("%s\n", __func__); 208 209 if (state->config->diseqc_tone) 210 t22k_off = 0; 211 212 if (cmd->msg_len > 6) 213 return -EINVAL; 214 oldval = tda10086_read_byte(state, 0x36); 215 216 for(i=0; i< cmd->msg_len; i++) { 217 tda10086_write_byte(state, 0x48+i, cmd->msg[i]); 218 } 219 tda10086_write_byte(state, 0x36, (0x08 + t22k_off) 220 | ((cmd->msg_len - 1) << 4)); 221 222 tda10086_diseqc_wait(state); 223 224 tda10086_write_byte(state, 0x36, oldval); 225 226 return 0; 227} 228 229static int tda10086_send_burst(struct dvb_frontend *fe, 230 enum fe_sec_mini_cmd minicmd) 231{ 232 struct tda10086_state* state = fe->demodulator_priv; 233 u8 oldval = tda10086_read_byte(state, 0x36); 234 u8 t22k_off = 0x80; 235 236 dprintk ("%s\n", __func__); 237 238 if (state->config->diseqc_tone) 239 t22k_off = 0; 240 241 switch(minicmd) { 242 case SEC_MINI_A: 243 tda10086_write_byte(state, 0x36, 0x04 + t22k_off); 244 break; 245 246 case SEC_MINI_B: 247 tda10086_write_byte(state, 0x36, 0x06 + t22k_off); 248 break; 249 } 250 251 tda10086_diseqc_wait(state); 252 253 tda10086_write_byte(state, 0x36, oldval); 254 255 return 0; 256} 257 258static int tda10086_set_inversion(struct tda10086_state *state, 259 struct dtv_frontend_properties *fe_params) 260{ 261 u8 invval = 0x80; 262 263 dprintk ("%s %i %i\n", __func__, fe_params->inversion, state->config->invert); 264 265 switch(fe_params->inversion) { 266 case INVERSION_OFF: 267 if (state->config->invert) 268 invval = 0x40; 269 break; 270 case INVERSION_ON: 271 if (!state->config->invert) 272 invval = 0x40; 273 break; 274 case INVERSION_AUTO: 275 invval = 0x00; 276 break; 277 } 278 tda10086_write_mask(state, 0x0c, 0xc0, invval); 279 280 return 0; 281} 282 283static int tda10086_set_symbol_rate(struct tda10086_state *state, 284 struct dtv_frontend_properties *fe_params) 285{ 286 u8 dfn = 0; 287 u8 afs = 0; 288 u8 byp = 0; 289 u8 reg37 = 0x43; 290 u8 reg42 = 0x43; 291 u64 big; 292 u32 tmp; 293 u32 bdr; 294 u32 bdri; 295 u32 symbol_rate = fe_params->symbol_rate; 296 297 dprintk ("%s %i\n", __func__, symbol_rate); 298 299 /* setup the decimation and anti-aliasing filters.. */ 300 if (symbol_rate < SACLK / 10000 * 137) { 301 dfn=4; 302 afs=1; 303 } else if (symbol_rate < SACLK / 10000 * 208) { 304 dfn=4; 305 afs=0; 306 } else if (symbol_rate < SACLK / 10000 * 270) { 307 dfn=3; 308 afs=1; 309 } else if (symbol_rate < SACLK / 10000 * 416) { 310 dfn=3; 311 afs=0; 312 } else if (symbol_rate < SACLK / 10000 * 550) { 313 dfn=2; 314 afs=1; 315 } else if (symbol_rate < SACLK / 10000 * 833) { 316 dfn=2; 317 afs=0; 318 } else if (symbol_rate < SACLK / 10000 * 1100) { 319 dfn=1; 320 afs=1; 321 } else if (symbol_rate < SACLK / 10000 * 1666) { 322 dfn=1; 323 afs=0; 324 } else if (symbol_rate < SACLK / 10000 * 2200) { 325 dfn=0; 326 afs=1; 327 } else if (symbol_rate < SACLK / 10000 * 3333) { 328 dfn=0; 329 afs=0; 330 } else { 331 reg37 = 0x63; 332 reg42 = 0x4f; 333 byp=1; 334 } 335 336 /* calculate BDR */ 337 big = (1ULL<<21) * ((u64) symbol_rate/1000ULL) * (1ULL<<dfn); 338 big += ((SACLK/1000ULL)-1ULL); 339 do_div(big, (SACLK/1000ULL)); 340 bdr = big & 0xfffff; 341 342 /* calculate BDRI */ 343 tmp = (1<<dfn)*(symbol_rate/1000); 344 bdri = ((32 * (SACLK/1000)) + (tmp-1)) / tmp; 345 346 tda10086_write_byte(state, 0x21, (afs << 7) | dfn); 347 tda10086_write_mask(state, 0x20, 0x08, byp << 3); 348 tda10086_write_byte(state, 0x06, bdr); 349 tda10086_write_byte(state, 0x07, bdr >> 8); 350 tda10086_write_byte(state, 0x08, bdr >> 16); 351 tda10086_write_byte(state, 0x09, bdri); 352 tda10086_write_byte(state, 0x37, reg37); 353 tda10086_write_byte(state, 0x42, reg42); 354 355 return 0; 356} 357 358static int tda10086_set_fec(struct tda10086_state *state, 359 struct dtv_frontend_properties *fe_params) 360{ 361 u8 fecval; 362 363 dprintk("%s %i\n", __func__, fe_params->fec_inner); 364 365 switch (fe_params->fec_inner) { 366 case FEC_1_2: 367 fecval = 0x00; 368 break; 369 case FEC_2_3: 370 fecval = 0x01; 371 break; 372 case FEC_3_4: 373 fecval = 0x02; 374 break; 375 case FEC_4_5: 376 fecval = 0x03; 377 break; 378 case FEC_5_6: 379 fecval = 0x04; 380 break; 381 case FEC_6_7: 382 fecval = 0x05; 383 break; 384 case FEC_7_8: 385 fecval = 0x06; 386 break; 387 case FEC_8_9: 388 fecval = 0x07; 389 break; 390 case FEC_AUTO: 391 fecval = 0x08; 392 break; 393 default: 394 return -1; 395 } 396 tda10086_write_byte(state, 0x0d, fecval); 397 398 return 0; 399} 400 401static int tda10086_set_frontend(struct dvb_frontend *fe) 402{ 403 struct dtv_frontend_properties *fe_params = &fe->dtv_property_cache; 404 struct tda10086_state *state = fe->demodulator_priv; 405 int ret; 406 u32 freq = 0; 407 int freqoff; 408 409 dprintk ("%s\n", __func__); 410 411 /* modify parameters for tuning */ 412 tda10086_write_byte(state, 0x02, 0x35); 413 state->has_lock = false; 414 415 /* set params */ 416 if (fe->ops.tuner_ops.set_params) { 417 fe->ops.tuner_ops.set_params(fe); 418 if (fe->ops.i2c_gate_ctrl) 419 fe->ops.i2c_gate_ctrl(fe, 0); 420 421 if (fe->ops.tuner_ops.get_frequency) 422 fe->ops.tuner_ops.get_frequency(fe, &freq); 423 if (fe->ops.i2c_gate_ctrl) 424 fe->ops.i2c_gate_ctrl(fe, 0); 425 } 426 427 /* calculate the frequency offset (in *Hz* not kHz) */ 428 freqoff = fe_params->frequency - freq; 429 freqoff = ((1<<16) * freqoff) / (SACLK/1000); 430 tda10086_write_byte(state, 0x3d, 0x80 | ((freqoff >> 8) & 0x7f)); 431 tda10086_write_byte(state, 0x3e, freqoff); 432 433 if ((ret = tda10086_set_inversion(state, fe_params)) < 0) 434 return ret; 435 if ((ret = tda10086_set_symbol_rate(state, fe_params)) < 0) 436 return ret; 437 if ((ret = tda10086_set_fec(state, fe_params)) < 0) 438 return ret; 439 440 /* soft reset + disable TS output until lock */ 441 tda10086_write_mask(state, 0x10, 0x40, 0x40); 442 tda10086_write_mask(state, 0x00, 0x01, 0x00); 443 444 state->symbol_rate = fe_params->symbol_rate; 445 state->frequency = fe_params->frequency; 446 return 0; 447} 448 449static int tda10086_get_frontend(struct dvb_frontend *fe, 450 struct dtv_frontend_properties *fe_params) 451{ 452 struct tda10086_state* state = fe->demodulator_priv; 453 u8 val; 454 int tmp; 455 u64 tmp64; 456 457 dprintk ("%s\n", __func__); 458 459 /* check for invalid symbol rate */ 460 if (fe_params->symbol_rate < 500000) 461 return -EINVAL; 462 463 /* calculate the updated frequency (note: we convert from Hz->kHz) */ 464 tmp64 = ((u64)tda10086_read_byte(state, 0x52) 465 | (tda10086_read_byte(state, 0x51) << 8)); 466 if (tmp64 & 0x8000) 467 tmp64 |= 0xffffffffffff0000ULL; 468 tmp64 = (tmp64 * (SACLK/1000ULL)); 469 do_div(tmp64, (1ULL<<15) * (1ULL<<1)); 470 fe_params->frequency = (int) state->frequency + (int) tmp64; 471 472 /* the inversion */ 473 val = tda10086_read_byte(state, 0x0c); 474 if (val & 0x80) { 475 switch(val & 0x40) { 476 case 0x00: 477 fe_params->inversion = INVERSION_OFF; 478 if (state->config->invert) 479 fe_params->inversion = INVERSION_ON; 480 break; 481 default: 482 fe_params->inversion = INVERSION_ON; 483 if (state->config->invert) 484 fe_params->inversion = INVERSION_OFF; 485 break; 486 } 487 } else { 488 tda10086_read_byte(state, 0x0f); 489 switch(val & 0x02) { 490 case 0x00: 491 fe_params->inversion = INVERSION_OFF; 492 if (state->config->invert) 493 fe_params->inversion = INVERSION_ON; 494 break; 495 default: 496 fe_params->inversion = INVERSION_ON; 497 if (state->config->invert) 498 fe_params->inversion = INVERSION_OFF; 499 break; 500 } 501 } 502 503 /* calculate the updated symbol rate */ 504 tmp = tda10086_read_byte(state, 0x1d); 505 if (tmp & 0x80) 506 tmp |= 0xffffff00; 507 tmp = (tmp * 480 * (1<<1)) / 128; 508 tmp = ((state->symbol_rate/1000) * tmp) / (1000000/1000); 509 fe_params->symbol_rate = state->symbol_rate + tmp; 510 511 /* the FEC */ 512 val = (tda10086_read_byte(state, 0x0d) & 0x70) >> 4; 513 switch(val) { 514 case 0x00: 515 fe_params->fec_inner = FEC_1_2; 516 break; 517 case 0x01: 518 fe_params->fec_inner = FEC_2_3; 519 break; 520 case 0x02: 521 fe_params->fec_inner = FEC_3_4; 522 break; 523 case 0x03: 524 fe_params->fec_inner = FEC_4_5; 525 break; 526 case 0x04: 527 fe_params->fec_inner = FEC_5_6; 528 break; 529 case 0x05: 530 fe_params->fec_inner = FEC_6_7; 531 break; 532 case 0x06: 533 fe_params->fec_inner = FEC_7_8; 534 break; 535 case 0x07: 536 fe_params->fec_inner = FEC_8_9; 537 break; 538 } 539 540 return 0; 541} 542 543static int tda10086_read_status(struct dvb_frontend *fe, 544 enum fe_status *fe_status) 545{ 546 struct tda10086_state* state = fe->demodulator_priv; 547 u8 val; 548 549 dprintk ("%s\n", __func__); 550 551 val = tda10086_read_byte(state, 0x0e); 552 *fe_status = 0; 553 if (val & 0x01) 554 *fe_status |= FE_HAS_SIGNAL; 555 if (val & 0x02) 556 *fe_status |= FE_HAS_CARRIER; 557 if (val & 0x04) 558 *fe_status |= FE_HAS_VITERBI; 559 if (val & 0x08) 560 *fe_status |= FE_HAS_SYNC; 561 if (val & 0x10) { 562 *fe_status |= FE_HAS_LOCK; 563 if (!state->has_lock) { 564 state->has_lock = true; 565 /* modify parameters for stable reception */ 566 tda10086_write_byte(state, 0x02, 0x00); 567 } 568 } 569 570 return 0; 571} 572 573static int tda10086_read_signal_strength(struct dvb_frontend* fe, u16 * signal) 574{ 575 struct tda10086_state* state = fe->demodulator_priv; 576 u8 _str; 577 578 dprintk ("%s\n", __func__); 579 580 _str = 0xff - tda10086_read_byte(state, 0x43); 581 *signal = (_str << 8) | _str; 582 583 return 0; 584} 585 586static int tda10086_read_snr(struct dvb_frontend* fe, u16 * snr) 587{ 588 struct tda10086_state* state = fe->demodulator_priv; 589 u8 _snr; 590 591 dprintk ("%s\n", __func__); 592 593 _snr = 0xff - tda10086_read_byte(state, 0x1c); 594 *snr = (_snr << 8) | _snr; 595 596 return 0; 597} 598 599static int tda10086_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks) 600{ 601 struct tda10086_state* state = fe->demodulator_priv; 602 603 dprintk ("%s\n", __func__); 604 605 /* read it */ 606 *ucblocks = tda10086_read_byte(state, 0x18) & 0x7f; 607 608 /* reset counter */ 609 tda10086_write_byte(state, 0x18, 0x00); 610 tda10086_write_byte(state, 0x18, 0x80); 611 612 return 0; 613} 614 615static int tda10086_read_ber(struct dvb_frontend* fe, u32* ber) 616{ 617 struct tda10086_state* state = fe->demodulator_priv; 618 619 dprintk ("%s\n", __func__); 620 621 /* read it */ 622 *ber = 0; 623 *ber |= tda10086_read_byte(state, 0x15); 624 *ber |= tda10086_read_byte(state, 0x16) << 8; 625 *ber |= (tda10086_read_byte(state, 0x17) & 0xf) << 16; 626 627 return 0; 628} 629 630static int tda10086_sleep(struct dvb_frontend* fe) 631{ 632 struct tda10086_state* state = fe->demodulator_priv; 633 634 dprintk ("%s\n", __func__); 635 636 tda10086_write_mask(state, 0x00, 0x08, 0x08); 637 638 return 0; 639} 640 641static int tda10086_i2c_gate_ctrl(struct dvb_frontend* fe, int enable) 642{ 643 struct tda10086_state* state = fe->demodulator_priv; 644 645 dprintk ("%s\n", __func__); 646 647 if (enable) { 648 tda10086_write_mask(state, 0x00, 0x10, 0x10); 649 } else { 650 tda10086_write_mask(state, 0x00, 0x10, 0x00); 651 } 652 653 return 0; 654} 655 656static int tda10086_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings* fesettings) 657{ 658 struct dtv_frontend_properties *p = &fe->dtv_property_cache; 659 660 if (p->symbol_rate > 20000000) { 661 fesettings->min_delay_ms = 50; 662 fesettings->step_size = 2000; 663 fesettings->max_drift = 8000; 664 } else if (p->symbol_rate > 12000000) { 665 fesettings->min_delay_ms = 100; 666 fesettings->step_size = 1500; 667 fesettings->max_drift = 9000; 668 } else if (p->symbol_rate > 8000000) { 669 fesettings->min_delay_ms = 100; 670 fesettings->step_size = 1000; 671 fesettings->max_drift = 8000; 672 } else if (p->symbol_rate > 4000000) { 673 fesettings->min_delay_ms = 100; 674 fesettings->step_size = 500; 675 fesettings->max_drift = 7000; 676 } else if (p->symbol_rate > 2000000) { 677 fesettings->min_delay_ms = 200; 678 fesettings->step_size = p->symbol_rate / 8000; 679 fesettings->max_drift = 14 * fesettings->step_size; 680 } else { 681 fesettings->min_delay_ms = 200; 682 fesettings->step_size = p->symbol_rate / 8000; 683 fesettings->max_drift = 18 * fesettings->step_size; 684 } 685 686 return 0; 687} 688 689static void tda10086_release(struct dvb_frontend* fe) 690{ 691 struct tda10086_state *state = fe->demodulator_priv; 692 tda10086_sleep(fe); 693 kfree(state); 694} 695 696static const struct dvb_frontend_ops tda10086_ops = { 697 .delsys = { SYS_DVBS }, 698 .info = { 699 .name = "Philips TDA10086 DVB-S", 700 .frequency_min_hz = 950 * MHz, 701 .frequency_max_hz = 2150 * MHz, 702 .frequency_stepsize_hz = 125 * kHz, 703 .symbol_rate_min = 1000000, 704 .symbol_rate_max = 45000000, 705 .caps = FE_CAN_INVERSION_AUTO | 706 FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 | 707 FE_CAN_FEC_5_6 | FE_CAN_FEC_6_7 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO | 708 FE_CAN_QPSK 709 }, 710 711 .release = tda10086_release, 712 713 .init = tda10086_init, 714 .sleep = tda10086_sleep, 715 .i2c_gate_ctrl = tda10086_i2c_gate_ctrl, 716 717 .set_frontend = tda10086_set_frontend, 718 .get_frontend = tda10086_get_frontend, 719 .get_tune_settings = tda10086_get_tune_settings, 720 721 .read_status = tda10086_read_status, 722 .read_ber = tda10086_read_ber, 723 .read_signal_strength = tda10086_read_signal_strength, 724 .read_snr = tda10086_read_snr, 725 .read_ucblocks = tda10086_read_ucblocks, 726 727 .diseqc_send_master_cmd = tda10086_send_master_cmd, 728 .diseqc_send_burst = tda10086_send_burst, 729 .set_tone = tda10086_set_tone, 730}; 731 732struct dvb_frontend* tda10086_attach(const struct tda10086_config* config, 733 struct i2c_adapter* i2c) 734{ 735 struct tda10086_state *state; 736 737 dprintk ("%s\n", __func__); 738 739 /* allocate memory for the internal state */ 740 state = kzalloc(sizeof(struct tda10086_state), GFP_KERNEL); 741 if (!state) 742 return NULL; 743 744 /* setup the state */ 745 state->config = config; 746 state->i2c = i2c; 747 748 /* check if the demod is there */ 749 if (tda10086_read_byte(state, 0x1e) != 0xe1) { 750 kfree(state); 751 return NULL; 752 } 753 754 /* create dvb_frontend */ 755 memcpy(&state->frontend.ops, &tda10086_ops, sizeof(struct dvb_frontend_ops)); 756 state->frontend.demodulator_priv = state; 757 return &state->frontend; 758} 759 760module_param(debug, int, 0644); 761MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off)."); 762 763MODULE_DESCRIPTION("Philips TDA10086 DVB-S Demodulator"); 764MODULE_AUTHOR("Andrew de Quincey"); 765MODULE_LICENSE("GPL"); 766 767EXPORT_SYMBOL(tda10086_attach);