1// SPDX-License-Identifier: GPL-2.0-or-later 2/* 3 * Support for LGDT3306A - 8VSB/QAM-B 4 * 5 * Copyright (C) 2013 Fred Richter <frichter@hauppauge.com> 6 * - driver structure based on lgdt3305.[ch] by Michael Krufky 7 * - code based on LG3306_V0.35 API by LG Electronics Inc. 8 */ 9 10#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 11 12#include <asm/div64.h> 13#include <linux/kernel.h> 14#include <linux/dvb/frontend.h> 15#include <media/dvb_math.h> 16#include "lgdt3306a.h" 17#include <linux/i2c-mux.h> 18 19 20static int debug; 21module_param(debug, int, 0644); 22MODULE_PARM_DESC(debug, "set debug level (info=1, reg=2 (or-able))"); 23 24/* 25 * Older drivers treated QAM64 and QAM256 the same; that is the HW always 26 * used "Auto" mode during detection. Setting "forced_manual"=1 allows 27 * the user to treat these modes as separate. For backwards compatibility, 28 * it's off by default. QAM_AUTO can now be specified to achive that 29 * effect even if "forced_manual"=1 30 */ 31static int forced_manual; 32module_param(forced_manual, int, 0644); 33MODULE_PARM_DESC(forced_manual, "if set, QAM64 and QAM256 will only lock to modulation specified"); 34 35#define DBG_INFO 1 36#define DBG_REG 2 37#define DBG_DUMP 4 /* FGR - comment out to remove dump code */ 38 39#define lg_debug(fmt, arg...) \ 40 printk(KERN_DEBUG pr_fmt(fmt), ## arg) 41 42#define dbg_info(fmt, arg...) \ 43 do { \ 44 if (debug & DBG_INFO) \ 45 lg_debug(fmt, ## arg); \ 46 } while (0) 47 48#define dbg_reg(fmt, arg...) \ 49 do { \ 50 if (debug & DBG_REG) \ 51 lg_debug(fmt, ## arg); \ 52 } while (0) 53 54#define lg_chkerr(ret) \ 55({ \ 56 int __ret; \ 57 __ret = (ret < 0); \ 58 if (__ret) \ 59 pr_err("error %d on line %d\n", ret, __LINE__); \ 60 __ret; \ 61}) 62 63struct lgdt3306a_state { 64 struct i2c_adapter *i2c_adap; 65 const struct lgdt3306a_config *cfg; 66 67 struct dvb_frontend frontend; 68 69 enum fe_modulation current_modulation; 70 u32 current_frequency; 71 u32 snr; 72 73 struct i2c_mux_core *muxc; 74}; 75 76/* 77 * LG3306A Register Usage 78 * (LG does not really name the registers, so this code does not either) 79 * 80 * 0000 -> 00FF Common control and status 81 * 1000 -> 10FF Synchronizer control and status 82 * 1F00 -> 1FFF Smart Antenna control and status 83 * 2100 -> 21FF VSB Equalizer control and status 84 * 2800 -> 28FF QAM Equalizer control and status 85 * 3000 -> 30FF FEC control and status 86 */ 87 88enum lgdt3306a_lock_status { 89 LG3306_UNLOCK = 0x00, 90 LG3306_LOCK = 0x01, 91 LG3306_UNKNOWN_LOCK = 0xff 92}; 93 94enum lgdt3306a_neverlock_status { 95 LG3306_NL_INIT = 0x00, 96 LG3306_NL_PROCESS = 0x01, 97 LG3306_NL_LOCK = 0x02, 98 LG3306_NL_FAIL = 0x03, 99 LG3306_NL_UNKNOWN = 0xff 100}; 101 102enum lgdt3306a_modulation { 103 LG3306_VSB = 0x00, 104 LG3306_QAM64 = 0x01, 105 LG3306_QAM256 = 0x02, 106 LG3306_UNKNOWN_MODE = 0xff 107}; 108 109enum lgdt3306a_lock_check { 110 LG3306_SYNC_LOCK, 111 LG3306_FEC_LOCK, 112 LG3306_TR_LOCK, 113 LG3306_AGC_LOCK, 114}; 115 116 117#ifdef DBG_DUMP 118static void lgdt3306a_DumpAllRegs(struct lgdt3306a_state *state); 119static void lgdt3306a_DumpRegs(struct lgdt3306a_state *state); 120#endif 121 122 123static int lgdt3306a_write_reg(struct lgdt3306a_state *state, u16 reg, u8 val) 124{ 125 int ret; 126 u8 buf[] = { reg >> 8, reg & 0xff, val }; 127 struct i2c_msg msg = { 128 .addr = state->cfg->i2c_addr, .flags = 0, 129 .buf = buf, .len = 3, 130 }; 131 132 dbg_reg("reg: 0x%04x, val: 0x%02x\n", reg, val); 133 134 ret = i2c_transfer(state->i2c_adap, &msg, 1); 135 136 if (ret != 1) { 137 pr_err("error (addr %02x %02x <- %02x, err = %i)\n", 138 msg.buf[0], msg.buf[1], msg.buf[2], ret); 139 if (ret < 0) 140 return ret; 141 else 142 return -EREMOTEIO; 143 } 144 return 0; 145} 146 147static int lgdt3306a_read_reg(struct lgdt3306a_state *state, u16 reg, u8 *val) 148{ 149 int ret; 150 u8 reg_buf[] = { reg >> 8, reg & 0xff }; 151 struct i2c_msg msg[] = { 152 { .addr = state->cfg->i2c_addr, 153 .flags = 0, .buf = reg_buf, .len = 2 }, 154 { .addr = state->cfg->i2c_addr, 155 .flags = I2C_M_RD, .buf = val, .len = 1 }, 156 }; 157 158 ret = i2c_transfer(state->i2c_adap, msg, 2); 159 160 if (ret != 2) { 161 pr_err("error (addr %02x reg %04x error (ret == %i)\n", 162 state->cfg->i2c_addr, reg, ret); 163 if (ret < 0) 164 return ret; 165 else 166 return -EREMOTEIO; 167 } 168 dbg_reg("reg: 0x%04x, val: 0x%02x\n", reg, *val); 169 170 return 0; 171} 172 173#define read_reg(state, reg) \ 174({ \ 175 u8 __val; \ 176 int ret = lgdt3306a_read_reg(state, reg, &__val); \ 177 if (lg_chkerr(ret)) \ 178 __val = 0; \ 179 __val; \ 180}) 181 182static int lgdt3306a_set_reg_bit(struct lgdt3306a_state *state, 183 u16 reg, int bit, int onoff) 184{ 185 u8 val; 186 int ret; 187 188 dbg_reg("reg: 0x%04x, bit: %d, level: %d\n", reg, bit, onoff); 189 190 ret = lgdt3306a_read_reg(state, reg, &val); 191 if (lg_chkerr(ret)) 192 goto fail; 193 194 val &= ~(1 << bit); 195 val |= (onoff & 1) << bit; 196 197 ret = lgdt3306a_write_reg(state, reg, val); 198 lg_chkerr(ret); 199fail: 200 return ret; 201} 202 203/* ------------------------------------------------------------------------ */ 204 205static int lgdt3306a_soft_reset(struct lgdt3306a_state *state) 206{ 207 int ret; 208 209 dbg_info("\n"); 210 211 ret = lgdt3306a_set_reg_bit(state, 0x0000, 7, 0); 212 if (lg_chkerr(ret)) 213 goto fail; 214 215 msleep(20); 216 ret = lgdt3306a_set_reg_bit(state, 0x0000, 7, 1); 217 lg_chkerr(ret); 218 219fail: 220 return ret; 221} 222 223static int lgdt3306a_mpeg_mode(struct lgdt3306a_state *state, 224 enum lgdt3306a_mpeg_mode mode) 225{ 226 u8 val; 227 int ret; 228 229 dbg_info("(%d)\n", mode); 230 /* transport packet format - TPSENB=0x80 */ 231 ret = lgdt3306a_set_reg_bit(state, 0x0071, 7, 232 mode == LGDT3306A_MPEG_PARALLEL ? 1 : 0); 233 if (lg_chkerr(ret)) 234 goto fail; 235 236 /* 237 * start of packet signal duration 238 * TPSSOPBITEN=0x40; 0=byte duration, 1=bit duration 239 */ 240 ret = lgdt3306a_set_reg_bit(state, 0x0071, 6, 0); 241 if (lg_chkerr(ret)) 242 goto fail; 243 244 ret = lgdt3306a_read_reg(state, 0x0070, &val); 245 if (lg_chkerr(ret)) 246 goto fail; 247 248 val |= 0x10; /* TPCLKSUPB=0x10 */ 249 250 if (mode == LGDT3306A_MPEG_PARALLEL) 251 val &= ~0x10; 252 253 ret = lgdt3306a_write_reg(state, 0x0070, val); 254 lg_chkerr(ret); 255 256fail: 257 return ret; 258} 259 260static int lgdt3306a_mpeg_mode_polarity(struct lgdt3306a_state *state, 261 enum lgdt3306a_tp_clock_edge edge, 262 enum lgdt3306a_tp_valid_polarity valid) 263{ 264 u8 val; 265 int ret; 266 267 dbg_info("edge=%d, valid=%d\n", edge, valid); 268 269 ret = lgdt3306a_read_reg(state, 0x0070, &val); 270 if (lg_chkerr(ret)) 271 goto fail; 272 273 val &= ~0x06; /* TPCLKPOL=0x04, TPVALPOL=0x02 */ 274 275 if (edge == LGDT3306A_TPCLK_RISING_EDGE) 276 val |= 0x04; 277 if (valid == LGDT3306A_TP_VALID_HIGH) 278 val |= 0x02; 279 280 ret = lgdt3306a_write_reg(state, 0x0070, val); 281 lg_chkerr(ret); 282 283fail: 284 return ret; 285} 286 287static int lgdt3306a_mpeg_tristate(struct lgdt3306a_state *state, 288 int mode) 289{ 290 u8 val; 291 int ret; 292 293 dbg_info("(%d)\n", mode); 294 295 if (mode) { 296 ret = lgdt3306a_read_reg(state, 0x0070, &val); 297 if (lg_chkerr(ret)) 298 goto fail; 299 /* 300 * Tristate bus; TPOUTEN=0x80, TPCLKOUTEN=0x20, 301 * TPDATAOUTEN=0x08 302 */ 303 val &= ~0xa8; 304 ret = lgdt3306a_write_reg(state, 0x0070, val); 305 if (lg_chkerr(ret)) 306 goto fail; 307 308 /* AGCIFOUTENB=0x40; 1=Disable IFAGC pin */ 309 ret = lgdt3306a_set_reg_bit(state, 0x0003, 6, 1); 310 if (lg_chkerr(ret)) 311 goto fail; 312 313 } else { 314 /* enable IFAGC pin */ 315 ret = lgdt3306a_set_reg_bit(state, 0x0003, 6, 0); 316 if (lg_chkerr(ret)) 317 goto fail; 318 319 ret = lgdt3306a_read_reg(state, 0x0070, &val); 320 if (lg_chkerr(ret)) 321 goto fail; 322 323 val |= 0xa8; /* enable bus */ 324 ret = lgdt3306a_write_reg(state, 0x0070, val); 325 if (lg_chkerr(ret)) 326 goto fail; 327 } 328 329fail: 330 return ret; 331} 332 333static int lgdt3306a_ts_bus_ctrl(struct dvb_frontend *fe, int acquire) 334{ 335 struct lgdt3306a_state *state = fe->demodulator_priv; 336 337 dbg_info("acquire=%d\n", acquire); 338 339 return lgdt3306a_mpeg_tristate(state, acquire ? 0 : 1); 340 341} 342 343static int lgdt3306a_power(struct lgdt3306a_state *state, 344 int mode) 345{ 346 int ret; 347 348 dbg_info("(%d)\n", mode); 349 350 if (mode == 0) { 351 /* into reset */ 352 ret = lgdt3306a_set_reg_bit(state, 0x0000, 7, 0); 353 if (lg_chkerr(ret)) 354 goto fail; 355 356 /* power down */ 357 ret = lgdt3306a_set_reg_bit(state, 0x0000, 0, 0); 358 if (lg_chkerr(ret)) 359 goto fail; 360 361 } else { 362 /* out of reset */ 363 ret = lgdt3306a_set_reg_bit(state, 0x0000, 7, 1); 364 if (lg_chkerr(ret)) 365 goto fail; 366 367 /* power up */ 368 ret = lgdt3306a_set_reg_bit(state, 0x0000, 0, 1); 369 if (lg_chkerr(ret)) 370 goto fail; 371 } 372 373#ifdef DBG_DUMP 374 lgdt3306a_DumpAllRegs(state); 375#endif 376fail: 377 return ret; 378} 379 380 381static int lgdt3306a_set_vsb(struct lgdt3306a_state *state) 382{ 383 u8 val; 384 int ret; 385 386 dbg_info("\n"); 387 388 /* 0. Spectrum inversion detection manual; spectrum inverted */ 389 ret = lgdt3306a_read_reg(state, 0x0002, &val); 390 val &= 0xf7; /* SPECINVAUTO Off */ 391 val |= 0x04; /* SPECINV On */ 392 ret = lgdt3306a_write_reg(state, 0x0002, val); 393 if (lg_chkerr(ret)) 394 goto fail; 395 396 /* 1. Selection of standard mode(0x08=QAM, 0x80=VSB) */ 397 ret = lgdt3306a_write_reg(state, 0x0008, 0x80); 398 if (lg_chkerr(ret)) 399 goto fail; 400 401 /* 2. Bandwidth mode for VSB(6MHz) */ 402 ret = lgdt3306a_read_reg(state, 0x0009, &val); 403 val &= 0xe3; 404 val |= 0x0c; /* STDOPDETTMODE[2:0]=3 */ 405 ret = lgdt3306a_write_reg(state, 0x0009, val); 406 if (lg_chkerr(ret)) 407 goto fail; 408 409 /* 3. QAM mode detection mode(None) */ 410 ret = lgdt3306a_read_reg(state, 0x0009, &val); 411 val &= 0xfc; /* STDOPDETCMODE[1:0]=0 */ 412 ret = lgdt3306a_write_reg(state, 0x0009, val); 413 if (lg_chkerr(ret)) 414 goto fail; 415 416 /* 4. ADC sampling frequency rate(2x sampling) */ 417 ret = lgdt3306a_read_reg(state, 0x000d, &val); 418 val &= 0xbf; /* SAMPLING4XFEN=0 */ 419 ret = lgdt3306a_write_reg(state, 0x000d, val); 420 if (lg_chkerr(ret)) 421 goto fail; 422 423#if 0 424 /* FGR - disable any AICC filtering, testing only */ 425 426 ret = lgdt3306a_write_reg(state, 0x0024, 0x00); 427 if (lg_chkerr(ret)) 428 goto fail; 429 430 /* AICCFIXFREQ0 NT N-1(Video rejection) */ 431 ret = lgdt3306a_write_reg(state, 0x002e, 0x00); 432 ret = lgdt3306a_write_reg(state, 0x002f, 0x00); 433 ret = lgdt3306a_write_reg(state, 0x0030, 0x00); 434 435 /* AICCFIXFREQ1 NT N-1(Audio rejection) */ 436 ret = lgdt3306a_write_reg(state, 0x002b, 0x00); 437 ret = lgdt3306a_write_reg(state, 0x002c, 0x00); 438 ret = lgdt3306a_write_reg(state, 0x002d, 0x00); 439 440 /* AICCFIXFREQ2 NT Co-Channel(Video rejection) */ 441 ret = lgdt3306a_write_reg(state, 0x0028, 0x00); 442 ret = lgdt3306a_write_reg(state, 0x0029, 0x00); 443 ret = lgdt3306a_write_reg(state, 0x002a, 0x00); 444 445 /* AICCFIXFREQ3 NT Co-Channel(Audio rejection) */ 446 ret = lgdt3306a_write_reg(state, 0x0025, 0x00); 447 ret = lgdt3306a_write_reg(state, 0x0026, 0x00); 448 ret = lgdt3306a_write_reg(state, 0x0027, 0x00); 449 450#else 451 /* FGR - this works well for HVR-1955,1975 */ 452 453 /* 5. AICCOPMODE NT N-1 Adj. */ 454 ret = lgdt3306a_write_reg(state, 0x0024, 0x5A); 455 if (lg_chkerr(ret)) 456 goto fail; 457 458 /* AICCFIXFREQ0 NT N-1(Video rejection) */ 459 ret = lgdt3306a_write_reg(state, 0x002e, 0x5A); 460 ret = lgdt3306a_write_reg(state, 0x002f, 0x00); 461 ret = lgdt3306a_write_reg(state, 0x0030, 0x00); 462 463 /* AICCFIXFREQ1 NT N-1(Audio rejection) */ 464 ret = lgdt3306a_write_reg(state, 0x002b, 0x36); 465 ret = lgdt3306a_write_reg(state, 0x002c, 0x00); 466 ret = lgdt3306a_write_reg(state, 0x002d, 0x00); 467 468 /* AICCFIXFREQ2 NT Co-Channel(Video rejection) */ 469 ret = lgdt3306a_write_reg(state, 0x0028, 0x2A); 470 ret = lgdt3306a_write_reg(state, 0x0029, 0x00); 471 ret = lgdt3306a_write_reg(state, 0x002a, 0x00); 472 473 /* AICCFIXFREQ3 NT Co-Channel(Audio rejection) */ 474 ret = lgdt3306a_write_reg(state, 0x0025, 0x06); 475 ret = lgdt3306a_write_reg(state, 0x0026, 0x00); 476 ret = lgdt3306a_write_reg(state, 0x0027, 0x00); 477#endif 478 479 ret = lgdt3306a_read_reg(state, 0x001e, &val); 480 val &= 0x0f; 481 val |= 0xa0; 482 ret = lgdt3306a_write_reg(state, 0x001e, val); 483 484 ret = lgdt3306a_write_reg(state, 0x0022, 0x08); 485 486 ret = lgdt3306a_write_reg(state, 0x0023, 0xFF); 487 488 ret = lgdt3306a_read_reg(state, 0x211f, &val); 489 val &= 0xef; 490 ret = lgdt3306a_write_reg(state, 0x211f, val); 491 492 ret = lgdt3306a_write_reg(state, 0x2173, 0x01); 493 494 ret = lgdt3306a_read_reg(state, 0x1061, &val); 495 val &= 0xf8; 496 val |= 0x04; 497 ret = lgdt3306a_write_reg(state, 0x1061, val); 498 499 ret = lgdt3306a_read_reg(state, 0x103d, &val); 500 val &= 0xcf; 501 ret = lgdt3306a_write_reg(state, 0x103d, val); 502 503 ret = lgdt3306a_write_reg(state, 0x2122, 0x40); 504 505 ret = lgdt3306a_read_reg(state, 0x2141, &val); 506 val &= 0x3f; 507 ret = lgdt3306a_write_reg(state, 0x2141, val); 508 509 ret = lgdt3306a_read_reg(state, 0x2135, &val); 510 val &= 0x0f; 511 val |= 0x70; 512 ret = lgdt3306a_write_reg(state, 0x2135, val); 513 514 ret = lgdt3306a_read_reg(state, 0x0003, &val); 515 val &= 0xf7; 516 ret = lgdt3306a_write_reg(state, 0x0003, val); 517 518 ret = lgdt3306a_read_reg(state, 0x001c, &val); 519 val &= 0x7f; 520 ret = lgdt3306a_write_reg(state, 0x001c, val); 521 522 /* 6. EQ step size */ 523 ret = lgdt3306a_read_reg(state, 0x2179, &val); 524 val &= 0xf8; 525 ret = lgdt3306a_write_reg(state, 0x2179, val); 526 527 ret = lgdt3306a_read_reg(state, 0x217a, &val); 528 val &= 0xf8; 529 ret = lgdt3306a_write_reg(state, 0x217a, val); 530 531 /* 7. Reset */ 532 ret = lgdt3306a_soft_reset(state); 533 if (lg_chkerr(ret)) 534 goto fail; 535 536 dbg_info("complete\n"); 537fail: 538 return ret; 539} 540 541static int lgdt3306a_set_qam(struct lgdt3306a_state *state, int modulation) 542{ 543 u8 val; 544 int ret; 545 546 dbg_info("modulation=%d\n", modulation); 547 548 /* 1. Selection of standard mode(0x08=QAM, 0x80=VSB) */ 549 ret = lgdt3306a_write_reg(state, 0x0008, 0x08); 550 if (lg_chkerr(ret)) 551 goto fail; 552 553 /* 1a. Spectrum inversion detection to Auto */ 554 ret = lgdt3306a_read_reg(state, 0x0002, &val); 555 val &= 0xfb; /* SPECINV Off */ 556 val |= 0x08; /* SPECINVAUTO On */ 557 ret = lgdt3306a_write_reg(state, 0x0002, val); 558 if (lg_chkerr(ret)) 559 goto fail; 560 561 /* 2. Bandwidth mode for QAM */ 562 ret = lgdt3306a_read_reg(state, 0x0009, &val); 563 val &= 0xe3; /* STDOPDETTMODE[2:0]=0 VSB Off */ 564 ret = lgdt3306a_write_reg(state, 0x0009, val); 565 if (lg_chkerr(ret)) 566 goto fail; 567 568 /* 3. : 64QAM/256QAM detection(manual, auto) */ 569 ret = lgdt3306a_read_reg(state, 0x0009, &val); 570 val &= 0xfc; 571 /* Check for forced Manual modulation modes; otherwise always "auto" */ 572 if(forced_manual && (modulation != QAM_AUTO)){ 573 val |= 0x01; /* STDOPDETCMODE[1:0]= 1=Manual */ 574 } else { 575 val |= 0x02; /* STDOPDETCMODE[1:0]= 2=Auto */ 576 } 577 ret = lgdt3306a_write_reg(state, 0x0009, val); 578 if (lg_chkerr(ret)) 579 goto fail; 580 581 /* 3a. : 64QAM/256QAM selection for manual */ 582 ret = lgdt3306a_read_reg(state, 0x101a, &val); 583 val &= 0xf8; 584 if (modulation == QAM_64) 585 val |= 0x02; /* QMDQMODE[2:0]=2=QAM64 */ 586 else 587 val |= 0x04; /* QMDQMODE[2:0]=4=QAM256 */ 588 589 ret = lgdt3306a_write_reg(state, 0x101a, val); 590 if (lg_chkerr(ret)) 591 goto fail; 592 593 /* 4. ADC sampling frequency rate(4x sampling) */ 594 ret = lgdt3306a_read_reg(state, 0x000d, &val); 595 val &= 0xbf; 596 val |= 0x40; /* SAMPLING4XFEN=1 */ 597 ret = lgdt3306a_write_reg(state, 0x000d, val); 598 if (lg_chkerr(ret)) 599 goto fail; 600 601 /* 5. No AICC operation in QAM mode */ 602 ret = lgdt3306a_read_reg(state, 0x0024, &val); 603 val &= 0x00; 604 ret = lgdt3306a_write_reg(state, 0x0024, val); 605 if (lg_chkerr(ret)) 606 goto fail; 607 608 /* 5.1 V0.36 SRDCHKALWAYS : For better QAM detection */ 609 ret = lgdt3306a_read_reg(state, 0x000a, &val); 610 val &= 0xfd; 611 val |= 0x02; 612 ret = lgdt3306a_write_reg(state, 0x000a, val); 613 if (lg_chkerr(ret)) 614 goto fail; 615 616 /* 5.2 V0.36 Control of "no signal" detector function */ 617 ret = lgdt3306a_read_reg(state, 0x2849, &val); 618 val &= 0xdf; 619 ret = lgdt3306a_write_reg(state, 0x2849, val); 620 if (lg_chkerr(ret)) 621 goto fail; 622 623 /* 5.3 Fix for Blonder Tongue HDE-2H-QAM and AQM modulators */ 624 ret = lgdt3306a_read_reg(state, 0x302b, &val); 625 val &= 0x7f; /* SELFSYNCFINDEN_CQS=0; disable auto reset */ 626 ret = lgdt3306a_write_reg(state, 0x302b, val); 627 if (lg_chkerr(ret)) 628 goto fail; 629 630 /* 6. Reset */ 631 ret = lgdt3306a_soft_reset(state); 632 if (lg_chkerr(ret)) 633 goto fail; 634 635 dbg_info("complete\n"); 636fail: 637 return ret; 638} 639 640static int lgdt3306a_set_modulation(struct lgdt3306a_state *state, 641 struct dtv_frontend_properties *p) 642{ 643 int ret; 644 645 dbg_info("\n"); 646 647 switch (p->modulation) { 648 case VSB_8: 649 ret = lgdt3306a_set_vsb(state); 650 break; 651 case QAM_64: 652 case QAM_256: 653 case QAM_AUTO: 654 ret = lgdt3306a_set_qam(state, p->modulation); 655 break; 656 default: 657 return -EINVAL; 658 } 659 if (lg_chkerr(ret)) 660 goto fail; 661 662 state->current_modulation = p->modulation; 663 664fail: 665 return ret; 666} 667 668/* ------------------------------------------------------------------------ */ 669 670static int lgdt3306a_agc_setup(struct lgdt3306a_state *state, 671 struct dtv_frontend_properties *p) 672{ 673 /* TODO: anything we want to do here??? */ 674 dbg_info("\n"); 675 676 switch (p->modulation) { 677 case VSB_8: 678 break; 679 case QAM_64: 680 case QAM_256: 681 case QAM_AUTO: 682 break; 683 default: 684 return -EINVAL; 685 } 686 return 0; 687} 688 689/* ------------------------------------------------------------------------ */ 690 691static int lgdt3306a_set_inversion(struct lgdt3306a_state *state, 692 int inversion) 693{ 694 int ret; 695 696 dbg_info("(%d)\n", inversion); 697 698 ret = lgdt3306a_set_reg_bit(state, 0x0002, 2, inversion ? 1 : 0); 699 return ret; 700} 701 702static int lgdt3306a_set_inversion_auto(struct lgdt3306a_state *state, 703 int enabled) 704{ 705 int ret; 706 707 dbg_info("(%d)\n", enabled); 708 709 /* 0=Manual 1=Auto(QAM only) - SPECINVAUTO=0x04 */ 710 ret = lgdt3306a_set_reg_bit(state, 0x0002, 3, enabled); 711 return ret; 712} 713 714static int lgdt3306a_spectral_inversion(struct lgdt3306a_state *state, 715 struct dtv_frontend_properties *p, 716 int inversion) 717{ 718 int ret = 0; 719 720 dbg_info("(%d)\n", inversion); 721#if 0 722 /* 723 * FGR - spectral_inversion defaults already set for VSB and QAM; 724 * can enable later if desired 725 */ 726 727 ret = lgdt3306a_set_inversion(state, inversion); 728 729 switch (p->modulation) { 730 case VSB_8: 731 /* Manual only for VSB */ 732 ret = lgdt3306a_set_inversion_auto(state, 0); 733 break; 734 case QAM_64: 735 case QAM_256: 736 case QAM_AUTO: 737 /* Auto ok for QAM */ 738 ret = lgdt3306a_set_inversion_auto(state, 1); 739 break; 740 default: 741 ret = -EINVAL; 742 } 743#endif 744 return ret; 745} 746 747static int lgdt3306a_set_if(struct lgdt3306a_state *state, 748 struct dtv_frontend_properties *p) 749{ 750 int ret; 751 u16 if_freq_khz; 752 u8 nco1, nco2; 753 754 switch (p->modulation) { 755 case VSB_8: 756 if_freq_khz = state->cfg->vsb_if_khz; 757 break; 758 case QAM_64: 759 case QAM_256: 760 case QAM_AUTO: 761 if_freq_khz = state->cfg->qam_if_khz; 762 break; 763 default: 764 return -EINVAL; 765 } 766 767 switch (if_freq_khz) { 768 default: 769 pr_warn("IF=%d KHz is not supported, 3250 assumed\n", 770 if_freq_khz); 771 fallthrough; 772 case 3250: /* 3.25Mhz */ 773 nco1 = 0x34; 774 nco2 = 0x00; 775 break; 776 case 3500: /* 3.50Mhz */ 777 nco1 = 0x38; 778 nco2 = 0x00; 779 break; 780 case 4000: /* 4.00Mhz */ 781 nco1 = 0x40; 782 nco2 = 0x00; 783 break; 784 case 5000: /* 5.00Mhz */ 785 nco1 = 0x50; 786 nco2 = 0x00; 787 break; 788 case 5380: /* 5.38Mhz */ 789 nco1 = 0x56; 790 nco2 = 0x14; 791 break; 792 } 793 ret = lgdt3306a_write_reg(state, 0x0010, nco1); 794 if (ret) 795 return ret; 796 ret = lgdt3306a_write_reg(state, 0x0011, nco2); 797 if (ret) 798 return ret; 799 800 dbg_info("if_freq=%d KHz->[%04x]\n", if_freq_khz, nco1<<8 | nco2); 801 802 return 0; 803} 804 805/* ------------------------------------------------------------------------ */ 806 807static int lgdt3306a_i2c_gate_ctrl(struct dvb_frontend *fe, int enable) 808{ 809 struct lgdt3306a_state *state = fe->demodulator_priv; 810 811 if (state->cfg->deny_i2c_rptr) { 812 dbg_info("deny_i2c_rptr=%d\n", state->cfg->deny_i2c_rptr); 813 return 0; 814 } 815 dbg_info("(%d)\n", enable); 816 817 /* NI2CRPTEN=0x80 */ 818 return lgdt3306a_set_reg_bit(state, 0x0002, 7, enable ? 0 : 1); 819} 820 821static int lgdt3306a_sleep(struct lgdt3306a_state *state) 822{ 823 int ret; 824 825 dbg_info("\n"); 826 state->current_frequency = -1; /* force re-tune, when we wake */ 827 828 ret = lgdt3306a_mpeg_tristate(state, 1); /* disable data bus */ 829 if (lg_chkerr(ret)) 830 goto fail; 831 832 ret = lgdt3306a_power(state, 0); /* power down */ 833 lg_chkerr(ret); 834 835fail: 836 return 0; 837} 838 839static int lgdt3306a_fe_sleep(struct dvb_frontend *fe) 840{ 841 struct lgdt3306a_state *state = fe->demodulator_priv; 842 843 return lgdt3306a_sleep(state); 844} 845 846static int lgdt3306a_init(struct dvb_frontend *fe) 847{ 848 struct lgdt3306a_state *state = fe->demodulator_priv; 849 struct dtv_frontend_properties *c = &fe->dtv_property_cache; 850 u8 val; 851 int ret; 852 853 dbg_info("\n"); 854 855 /* 1. Normal operation mode */ 856 ret = lgdt3306a_set_reg_bit(state, 0x0001, 0, 1); /* SIMFASTENB=0x01 */ 857 if (lg_chkerr(ret)) 858 goto fail; 859 860 /* 2. Spectrum inversion auto detection (Not valid for VSB) */ 861 ret = lgdt3306a_set_inversion_auto(state, 0); 862 if (lg_chkerr(ret)) 863 goto fail; 864 865 /* 3. Spectrum inversion(According to the tuner configuration) */ 866 ret = lgdt3306a_set_inversion(state, 1); 867 if (lg_chkerr(ret)) 868 goto fail; 869 870 /* 4. Peak-to-peak voltage of ADC input signal */ 871 872 /* ADCSEL1V=0x80=1Vpp; 0x00=2Vpp */ 873 ret = lgdt3306a_set_reg_bit(state, 0x0004, 7, 1); 874 if (lg_chkerr(ret)) 875 goto fail; 876 877 /* 5. ADC output data capture clock phase */ 878 879 /* 0=same phase as ADC clock */ 880 ret = lgdt3306a_set_reg_bit(state, 0x0004, 2, 0); 881 if (lg_chkerr(ret)) 882 goto fail; 883 884 /* 5a. ADC sampling clock source */ 885 886 /* ADCCLKPLLSEL=0x08; 0=use ext clock, not PLL */ 887 ret = lgdt3306a_set_reg_bit(state, 0x0004, 3, 0); 888 if (lg_chkerr(ret)) 889 goto fail; 890 891 /* 6. Automatic PLL set */ 892 893 /* PLLSETAUTO=0x40; 0=off */ 894 ret = lgdt3306a_set_reg_bit(state, 0x0005, 6, 0); 895 if (lg_chkerr(ret)) 896 goto fail; 897 898 if (state->cfg->xtalMHz == 24) { /* 24MHz */ 899 /* 7. Frequency for PLL output(0x2564 for 192MHz for 24MHz) */ 900 ret = lgdt3306a_read_reg(state, 0x0005, &val); 901 if (lg_chkerr(ret)) 902 goto fail; 903 val &= 0xc0; 904 val |= 0x25; 905 ret = lgdt3306a_write_reg(state, 0x0005, val); 906 if (lg_chkerr(ret)) 907 goto fail; 908 ret = lgdt3306a_write_reg(state, 0x0006, 0x64); 909 if (lg_chkerr(ret)) 910 goto fail; 911 912 /* 8. ADC sampling frequency(0x180000 for 24MHz sampling) */ 913 ret = lgdt3306a_read_reg(state, 0x000d, &val); 914 if (lg_chkerr(ret)) 915 goto fail; 916 val &= 0xc0; 917 val |= 0x18; 918 ret = lgdt3306a_write_reg(state, 0x000d, val); 919 if (lg_chkerr(ret)) 920 goto fail; 921 922 } else if (state->cfg->xtalMHz == 25) { /* 25MHz */ 923 /* 7. Frequency for PLL output */ 924 ret = lgdt3306a_read_reg(state, 0x0005, &val); 925 if (lg_chkerr(ret)) 926 goto fail; 927 val &= 0xc0; 928 val |= 0x25; 929 ret = lgdt3306a_write_reg(state, 0x0005, val); 930 if (lg_chkerr(ret)) 931 goto fail; 932 ret = lgdt3306a_write_reg(state, 0x0006, 0x64); 933 if (lg_chkerr(ret)) 934 goto fail; 935 936 /* 8. ADC sampling frequency(0x190000 for 25MHz sampling) */ 937 ret = lgdt3306a_read_reg(state, 0x000d, &val); 938 if (lg_chkerr(ret)) 939 goto fail; 940 val &= 0xc0; 941 val |= 0x19; 942 ret = lgdt3306a_write_reg(state, 0x000d, val); 943 if (lg_chkerr(ret)) 944 goto fail; 945 } else { 946 pr_err("Bad xtalMHz=%d\n", state->cfg->xtalMHz); 947 } 948#if 0 949 ret = lgdt3306a_write_reg(state, 0x000e, 0x00); 950 ret = lgdt3306a_write_reg(state, 0x000f, 0x00); 951#endif 952 953 /* 9. Center frequency of input signal of ADC */ 954 ret = lgdt3306a_write_reg(state, 0x0010, 0x34); /* 3.25MHz */ 955 ret = lgdt3306a_write_reg(state, 0x0011, 0x00); 956 957 /* 10. Fixed gain error value */ 958 ret = lgdt3306a_write_reg(state, 0x0014, 0); /* gain error=0 */ 959 960 /* 10a. VSB TR BW gear shift initial step */ 961 ret = lgdt3306a_read_reg(state, 0x103c, &val); 962 val &= 0x0f; 963 val |= 0x20; /* SAMGSAUTOSTL_V[3:0] = 2 */ 964 ret = lgdt3306a_write_reg(state, 0x103c, val); 965 966 /* 10b. Timing offset calibration in low temperature for VSB */ 967 ret = lgdt3306a_read_reg(state, 0x103d, &val); 968 val &= 0xfc; 969 val |= 0x03; 970 ret = lgdt3306a_write_reg(state, 0x103d, val); 971 972 /* 10c. Timing offset calibration in low temperature for QAM */ 973 ret = lgdt3306a_read_reg(state, 0x1036, &val); 974 val &= 0xf0; 975 val |= 0x0c; 976 ret = lgdt3306a_write_reg(state, 0x1036, val); 977 978 /* 11. Using the imaginary part of CIR in CIR loading */ 979 ret = lgdt3306a_read_reg(state, 0x211f, &val); 980 val &= 0xef; /* do not use imaginary of CIR */ 981 ret = lgdt3306a_write_reg(state, 0x211f, val); 982 983 /* 12. Control of no signal detector function */ 984 ret = lgdt3306a_read_reg(state, 0x2849, &val); 985 val &= 0xef; /* NOUSENOSIGDET=0, enable no signal detector */ 986 ret = lgdt3306a_write_reg(state, 0x2849, val); 987 988 /* FGR - put demod in some known mode */ 989 ret = lgdt3306a_set_vsb(state); 990 991 /* 13. TP stream format */ 992 ret = lgdt3306a_mpeg_mode(state, state->cfg->mpeg_mode); 993 994 /* 14. disable output buses */ 995 ret = lgdt3306a_mpeg_tristate(state, 1); 996 997 /* 15. Sleep (in reset) */ 998 ret = lgdt3306a_sleep(state); 999 lg_chkerr(ret); 1000 1001 c->cnr.len = 1; 1002 c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE; 1003 1004fail: 1005 return ret; 1006} 1007 1008static int lgdt3306a_set_parameters(struct dvb_frontend *fe) 1009{ 1010 struct dtv_frontend_properties *p = &fe->dtv_property_cache; 1011 struct lgdt3306a_state *state = fe->demodulator_priv; 1012 int ret; 1013 1014 dbg_info("(%d, %d)\n", p->frequency, p->modulation); 1015 1016 if (state->current_frequency == p->frequency && 1017 state->current_modulation == p->modulation) { 1018 dbg_info(" (already set, skipping ...)\n"); 1019 return 0; 1020 } 1021 state->current_frequency = -1; 1022 state->current_modulation = -1; 1023 1024 ret = lgdt3306a_power(state, 1); /* power up */ 1025 if (lg_chkerr(ret)) 1026 goto fail; 1027 1028 if (fe->ops.tuner_ops.set_params) { 1029 ret = fe->ops.tuner_ops.set_params(fe); 1030 if (fe->ops.i2c_gate_ctrl) 1031 fe->ops.i2c_gate_ctrl(fe, 0); 1032#if 0 1033 if (lg_chkerr(ret)) 1034 goto fail; 1035 state->current_frequency = p->frequency; 1036#endif 1037 } 1038 1039 ret = lgdt3306a_set_modulation(state, p); 1040 if (lg_chkerr(ret)) 1041 goto fail; 1042 1043 ret = lgdt3306a_agc_setup(state, p); 1044 if (lg_chkerr(ret)) 1045 goto fail; 1046 1047 ret = lgdt3306a_set_if(state, p); 1048 if (lg_chkerr(ret)) 1049 goto fail; 1050 1051 ret = lgdt3306a_spectral_inversion(state, p, 1052 state->cfg->spectral_inversion ? 1 : 0); 1053 if (lg_chkerr(ret)) 1054 goto fail; 1055 1056 ret = lgdt3306a_mpeg_mode(state, state->cfg->mpeg_mode); 1057 if (lg_chkerr(ret)) 1058 goto fail; 1059 1060 ret = lgdt3306a_mpeg_mode_polarity(state, 1061 state->cfg->tpclk_edge, 1062 state->cfg->tpvalid_polarity); 1063 if (lg_chkerr(ret)) 1064 goto fail; 1065 1066 ret = lgdt3306a_mpeg_tristate(state, 0); /* enable data bus */ 1067 if (lg_chkerr(ret)) 1068 goto fail; 1069 1070 ret = lgdt3306a_soft_reset(state); 1071 if (lg_chkerr(ret)) 1072 goto fail; 1073 1074#ifdef DBG_DUMP 1075 lgdt3306a_DumpAllRegs(state); 1076#endif 1077 state->current_frequency = p->frequency; 1078fail: 1079 return ret; 1080} 1081 1082static int lgdt3306a_get_frontend(struct dvb_frontend *fe, 1083 struct dtv_frontend_properties *p) 1084{ 1085 struct lgdt3306a_state *state = fe->demodulator_priv; 1086 1087 dbg_info("(%u, %d)\n", 1088 state->current_frequency, state->current_modulation); 1089 1090 p->modulation = state->current_modulation; 1091 p->frequency = state->current_frequency; 1092 return 0; 1093} 1094 1095static enum dvbfe_algo lgdt3306a_get_frontend_algo(struct dvb_frontend *fe) 1096{ 1097#if 1 1098 return DVBFE_ALGO_CUSTOM; 1099#else 1100 return DVBFE_ALGO_HW; 1101#endif 1102} 1103 1104/* ------------------------------------------------------------------------ */ 1105static int lgdt3306a_monitor_vsb(struct lgdt3306a_state *state) 1106{ 1107 u8 val; 1108 int ret; 1109 u8 snrRef, maxPowerMan, nCombDet; 1110 u16 fbDlyCir; 1111 1112 ret = lgdt3306a_read_reg(state, 0x21a1, &val); 1113 if (ret) 1114 return ret; 1115 snrRef = val & 0x3f; 1116 1117 ret = lgdt3306a_read_reg(state, 0x2185, &maxPowerMan); 1118 if (ret) 1119 return ret; 1120 1121 ret = lgdt3306a_read_reg(state, 0x2191, &val); 1122 if (ret) 1123 return ret; 1124 nCombDet = (val & 0x80) >> 7; 1125 1126 ret = lgdt3306a_read_reg(state, 0x2180, &val); 1127 if (ret) 1128 return ret; 1129 fbDlyCir = (val & 0x03) << 8; 1130 1131 ret = lgdt3306a_read_reg(state, 0x2181, &val); 1132 if (ret) 1133 return ret; 1134 fbDlyCir |= val; 1135 1136 dbg_info("snrRef=%d maxPowerMan=0x%x nCombDet=%d fbDlyCir=0x%x\n", 1137 snrRef, maxPowerMan, nCombDet, fbDlyCir); 1138 1139 /* Carrier offset sub loop bandwidth */ 1140 ret = lgdt3306a_read_reg(state, 0x1061, &val); 1141 if (ret) 1142 return ret; 1143 val &= 0xf8; 1144 if ((snrRef > 18) && (maxPowerMan > 0x68) 1145 && (nCombDet == 0x01) 1146 && ((fbDlyCir == 0x03FF) || (fbDlyCir < 0x6C))) { 1147 /* SNR is over 18dB and no ghosting */ 1148 val |= 0x00; /* final bandwidth = 0 */ 1149 } else { 1150 val |= 0x04; /* final bandwidth = 4 */ 1151 } 1152 ret = lgdt3306a_write_reg(state, 0x1061, val); 1153 if (ret) 1154 return ret; 1155 1156 /* Adjust Notch Filter */ 1157 ret = lgdt3306a_read_reg(state, 0x0024, &val); 1158 if (ret) 1159 return ret; 1160 val &= 0x0f; 1161 if (nCombDet == 0) { /* Turn on the Notch Filter */ 1162 val |= 0x50; 1163 } 1164 ret = lgdt3306a_write_reg(state, 0x0024, val); 1165 if (ret) 1166 return ret; 1167 1168 /* VSB Timing Recovery output normalization */ 1169 ret = lgdt3306a_read_reg(state, 0x103d, &val); 1170 if (ret) 1171 return ret; 1172 val &= 0xcf; 1173 val |= 0x20; 1174 ret = lgdt3306a_write_reg(state, 0x103d, val); 1175 1176 return ret; 1177} 1178 1179static enum lgdt3306a_modulation 1180lgdt3306a_check_oper_mode(struct lgdt3306a_state *state) 1181{ 1182 u8 val = 0; 1183 int ret; 1184 1185 ret = lgdt3306a_read_reg(state, 0x0081, &val); 1186 if (ret) 1187 goto err; 1188 1189 if (val & 0x80) { 1190 dbg_info("VSB\n"); 1191 return LG3306_VSB; 1192 } 1193 if (val & 0x08) { 1194 ret = lgdt3306a_read_reg(state, 0x00a6, &val); 1195 if (ret) 1196 goto err; 1197 val = val >> 2; 1198 if (val & 0x01) { 1199 dbg_info("QAM256\n"); 1200 return LG3306_QAM256; 1201 } 1202 dbg_info("QAM64\n"); 1203 return LG3306_QAM64; 1204 } 1205err: 1206 pr_warn("UNKNOWN\n"); 1207 return LG3306_UNKNOWN_MODE; 1208} 1209 1210static enum lgdt3306a_lock_status 1211lgdt3306a_check_lock_status(struct lgdt3306a_state *state, 1212 enum lgdt3306a_lock_check whatLock) 1213{ 1214 u8 val = 0; 1215 int ret; 1216 enum lgdt3306a_modulation modeOper; 1217 enum lgdt3306a_lock_status lockStatus; 1218 1219 modeOper = LG3306_UNKNOWN_MODE; 1220 1221 switch (whatLock) { 1222 case LG3306_SYNC_LOCK: 1223 { 1224 ret = lgdt3306a_read_reg(state, 0x00a6, &val); 1225 if (ret) 1226 return ret; 1227 1228 if ((val & 0x80) == 0x80) 1229 lockStatus = LG3306_LOCK; 1230 else 1231 lockStatus = LG3306_UNLOCK; 1232 1233 dbg_info("SYNC_LOCK=%x\n", lockStatus); 1234 break; 1235 } 1236 case LG3306_AGC_LOCK: 1237 { 1238 ret = lgdt3306a_read_reg(state, 0x0080, &val); 1239 if (ret) 1240 return ret; 1241 1242 if ((val & 0x40) == 0x40) 1243 lockStatus = LG3306_LOCK; 1244 else 1245 lockStatus = LG3306_UNLOCK; 1246 1247 dbg_info("AGC_LOCK=%x\n", lockStatus); 1248 break; 1249 } 1250 case LG3306_TR_LOCK: 1251 { 1252 modeOper = lgdt3306a_check_oper_mode(state); 1253 if ((modeOper == LG3306_QAM64) || (modeOper == LG3306_QAM256)) { 1254 ret = lgdt3306a_read_reg(state, 0x1094, &val); 1255 if (ret) 1256 return ret; 1257 1258 if ((val & 0x80) == 0x80) 1259 lockStatus = LG3306_LOCK; 1260 else 1261 lockStatus = LG3306_UNLOCK; 1262 } else 1263 lockStatus = LG3306_UNKNOWN_LOCK; 1264 1265 dbg_info("TR_LOCK=%x\n", lockStatus); 1266 break; 1267 } 1268 case LG3306_FEC_LOCK: 1269 { 1270 modeOper = lgdt3306a_check_oper_mode(state); 1271 if ((modeOper == LG3306_QAM64) || (modeOper == LG3306_QAM256)) { 1272 ret = lgdt3306a_read_reg(state, 0x0080, &val); 1273 if (ret) 1274 return ret; 1275 1276 if ((val & 0x10) == 0x10) 1277 lockStatus = LG3306_LOCK; 1278 else 1279 lockStatus = LG3306_UNLOCK; 1280 } else 1281 lockStatus = LG3306_UNKNOWN_LOCK; 1282 1283 dbg_info("FEC_LOCK=%x\n", lockStatus); 1284 break; 1285 } 1286 1287 default: 1288 lockStatus = LG3306_UNKNOWN_LOCK; 1289 pr_warn("UNKNOWN whatLock=%d\n", whatLock); 1290 break; 1291 } 1292 1293 return lockStatus; 1294} 1295 1296static enum lgdt3306a_neverlock_status 1297lgdt3306a_check_neverlock_status(struct lgdt3306a_state *state) 1298{ 1299 u8 val = 0; 1300 int ret; 1301 enum lgdt3306a_neverlock_status lockStatus; 1302 1303 ret = lgdt3306a_read_reg(state, 0x0080, &val); 1304 if (ret) 1305 return ret; 1306 lockStatus = (enum lgdt3306a_neverlock_status)(val & 0x03); 1307 1308 dbg_info("NeverLock=%d", lockStatus); 1309 1310 return lockStatus; 1311} 1312 1313static int lgdt3306a_pre_monitoring(struct lgdt3306a_state *state) 1314{ 1315 u8 val = 0; 1316 int ret; 1317 u8 currChDiffACQ, snrRef, mainStrong, aiccrejStatus; 1318 1319 /* Channel variation */ 1320 ret = lgdt3306a_read_reg(state, 0x21bc, &currChDiffACQ); 1321 if (ret) 1322 return ret; 1323 1324 /* SNR of Frame sync */ 1325 ret = lgdt3306a_read_reg(state, 0x21a1, &val); 1326 if (ret) 1327 return ret; 1328 snrRef = val & 0x3f; 1329 1330 /* Strong Main CIR */ 1331 ret = lgdt3306a_read_reg(state, 0x2199, &val); 1332 if (ret) 1333 return ret; 1334 mainStrong = (val & 0x40) >> 6; 1335 1336 ret = lgdt3306a_read_reg(state, 0x0090, &val); 1337 if (ret) 1338 return ret; 1339 aiccrejStatus = (val & 0xf0) >> 4; 1340 1341 dbg_info("snrRef=%d mainStrong=%d aiccrejStatus=%d currChDiffACQ=0x%x\n", 1342 snrRef, mainStrong, aiccrejStatus, currChDiffACQ); 1343 1344#if 0 1345 /* Dynamic ghost exists */ 1346 if ((mainStrong == 0) && (currChDiffACQ > 0x70)) 1347#endif 1348 if (mainStrong == 0) { 1349 ret = lgdt3306a_read_reg(state, 0x2135, &val); 1350 if (ret) 1351 return ret; 1352 val &= 0x0f; 1353 val |= 0xa0; 1354 ret = lgdt3306a_write_reg(state, 0x2135, val); 1355 if (ret) 1356 return ret; 1357 1358 ret = lgdt3306a_read_reg(state, 0x2141, &val); 1359 if (ret) 1360 return ret; 1361 val &= 0x3f; 1362 val |= 0x80; 1363 ret = lgdt3306a_write_reg(state, 0x2141, val); 1364 if (ret) 1365 return ret; 1366 1367 ret = lgdt3306a_write_reg(state, 0x2122, 0x70); 1368 if (ret) 1369 return ret; 1370 } else { /* Weak ghost or static channel */ 1371 ret = lgdt3306a_read_reg(state, 0x2135, &val); 1372 if (ret) 1373 return ret; 1374 val &= 0x0f; 1375 val |= 0x70; 1376 ret = lgdt3306a_write_reg(state, 0x2135, val); 1377 if (ret) 1378 return ret; 1379 1380 ret = lgdt3306a_read_reg(state, 0x2141, &val); 1381 if (ret) 1382 return ret; 1383 val &= 0x3f; 1384 val |= 0x40; 1385 ret = lgdt3306a_write_reg(state, 0x2141, val); 1386 if (ret) 1387 return ret; 1388 1389 ret = lgdt3306a_write_reg(state, 0x2122, 0x40); 1390 if (ret) 1391 return ret; 1392 } 1393 return 0; 1394} 1395 1396static enum lgdt3306a_lock_status 1397lgdt3306a_sync_lock_poll(struct lgdt3306a_state *state) 1398{ 1399 enum lgdt3306a_lock_status syncLockStatus = LG3306_UNLOCK; 1400 int i; 1401 1402 for (i = 0; i < 2; i++) { 1403 msleep(30); 1404 1405 syncLockStatus = lgdt3306a_check_lock_status(state, 1406 LG3306_SYNC_LOCK); 1407 1408 if (syncLockStatus == LG3306_LOCK) { 1409 dbg_info("locked(%d)\n", i); 1410 return LG3306_LOCK; 1411 } 1412 } 1413 dbg_info("not locked\n"); 1414 return LG3306_UNLOCK; 1415} 1416 1417static enum lgdt3306a_lock_status 1418lgdt3306a_fec_lock_poll(struct lgdt3306a_state *state) 1419{ 1420 enum lgdt3306a_lock_status FECLockStatus = LG3306_UNLOCK; 1421 int i; 1422 1423 for (i = 0; i < 2; i++) { 1424 msleep(30); 1425 1426 FECLockStatus = lgdt3306a_check_lock_status(state, 1427 LG3306_FEC_LOCK); 1428 1429 if (FECLockStatus == LG3306_LOCK) { 1430 dbg_info("locked(%d)\n", i); 1431 return FECLockStatus; 1432 } 1433 } 1434 dbg_info("not locked\n"); 1435 return FECLockStatus; 1436} 1437 1438static enum lgdt3306a_neverlock_status 1439lgdt3306a_neverlock_poll(struct lgdt3306a_state *state) 1440{ 1441 enum lgdt3306a_neverlock_status NLLockStatus = LG3306_NL_FAIL; 1442 int i; 1443 1444 for (i = 0; i < 5; i++) { 1445 msleep(30); 1446 1447 NLLockStatus = lgdt3306a_check_neverlock_status(state); 1448 1449 if (NLLockStatus == LG3306_NL_LOCK) { 1450 dbg_info("NL_LOCK(%d)\n", i); 1451 return NLLockStatus; 1452 } 1453 } 1454 dbg_info("NLLockStatus=%d\n", NLLockStatus); 1455 return NLLockStatus; 1456} 1457 1458static u8 lgdt3306a_get_packet_error(struct lgdt3306a_state *state) 1459{ 1460 u8 val; 1461 int ret; 1462 1463 ret = lgdt3306a_read_reg(state, 0x00fa, &val); 1464 if (ret) 1465 return ret; 1466 1467 return val; 1468} 1469 1470static const u32 valx_x10[] = { 1471 10, 11, 13, 15, 17, 20, 25, 33, 41, 50, 59, 73, 87, 100 1472}; 1473static const u32 log10x_x1000[] = { 1474 0, 41, 114, 176, 230, 301, 398, 518, 613, 699, 771, 863, 939, 1000 1475}; 1476 1477static u32 log10_x1000(u32 x) 1478{ 1479 u32 diff_val, step_val, step_log10; 1480 u32 log_val = 0; 1481 u32 i; 1482 1483 if (x <= 0) 1484 return -1000000; /* signal error */ 1485 1486 if (x == 10) 1487 return 0; /* log(1)=0 */ 1488 1489 if (x < 10) { 1490 while (x < 10) { 1491 x = x * 10; 1492 log_val--; 1493 } 1494 } else { /* x > 10 */ 1495 while (x >= 100) { 1496 x = x / 10; 1497 log_val++; 1498 } 1499 } 1500 log_val *= 1000; 1501 1502 if (x == 10) /* was our input an exact multiple of 10 */ 1503 return log_val; /* don't need to interpolate */ 1504 1505 /* find our place on the log curve */ 1506 for (i = 1; i < ARRAY_SIZE(valx_x10); i++) { 1507 if (valx_x10[i] >= x) 1508 break; 1509 } 1510 if (i == ARRAY_SIZE(valx_x10)) 1511 return log_val + log10x_x1000[i - 1]; 1512 1513 diff_val = x - valx_x10[i-1]; 1514 step_val = valx_x10[i] - valx_x10[i - 1]; 1515 step_log10 = log10x_x1000[i] - log10x_x1000[i - 1]; 1516 1517 /* do a linear interpolation to get in-between values */ 1518 return log_val + log10x_x1000[i - 1] + 1519 ((diff_val*step_log10) / step_val); 1520} 1521 1522static u32 lgdt3306a_calculate_snr_x100(struct lgdt3306a_state *state) 1523{ 1524 u32 mse; /* Mean-Square Error */ 1525 u32 pwr; /* Constelation power */ 1526 u32 snr_x100; 1527 1528 mse = (read_reg(state, 0x00ec) << 8) | 1529 (read_reg(state, 0x00ed)); 1530 pwr = (read_reg(state, 0x00e8) << 8) | 1531 (read_reg(state, 0x00e9)); 1532 1533 if (mse == 0) /* no signal */ 1534 return 0; 1535 1536 snr_x100 = log10_x1000((pwr * 10000) / mse) - 3000; 1537 dbg_info("mse=%u, pwr=%u, snr_x100=%d\n", mse, pwr, snr_x100); 1538 1539 return snr_x100; 1540} 1541 1542static enum lgdt3306a_lock_status 1543lgdt3306a_vsb_lock_poll(struct lgdt3306a_state *state) 1544{ 1545 int ret; 1546 u8 cnt = 0; 1547 u8 packet_error; 1548 u32 snr; 1549 1550 for (cnt = 0; cnt < 10; cnt++) { 1551 if (lgdt3306a_sync_lock_poll(state) == LG3306_UNLOCK) { 1552 dbg_info("no sync lock!\n"); 1553 return LG3306_UNLOCK; 1554 } 1555 1556 msleep(20); 1557 ret = lgdt3306a_pre_monitoring(state); 1558 if (ret) 1559 break; 1560 1561 packet_error = lgdt3306a_get_packet_error(state); 1562 snr = lgdt3306a_calculate_snr_x100(state); 1563 dbg_info("cnt=%d errors=%d snr=%d\n", cnt, packet_error, snr); 1564 1565 if ((snr >= 1500) && (packet_error < 0xff)) 1566 return LG3306_LOCK; 1567 } 1568 1569 dbg_info("not locked!\n"); 1570 return LG3306_UNLOCK; 1571} 1572 1573static enum lgdt3306a_lock_status 1574lgdt3306a_qam_lock_poll(struct lgdt3306a_state *state) 1575{ 1576 u8 cnt; 1577 u8 packet_error; 1578 u32 snr; 1579 1580 for (cnt = 0; cnt < 10; cnt++) { 1581 if (lgdt3306a_fec_lock_poll(state) == LG3306_UNLOCK) { 1582 dbg_info("no fec lock!\n"); 1583 return LG3306_UNLOCK; 1584 } 1585 1586 msleep(20); 1587 1588 packet_error = lgdt3306a_get_packet_error(state); 1589 snr = lgdt3306a_calculate_snr_x100(state); 1590 dbg_info("cnt=%d errors=%d snr=%d\n", cnt, packet_error, snr); 1591 1592 if ((snr >= 1500) && (packet_error < 0xff)) 1593 return LG3306_LOCK; 1594 } 1595 1596 dbg_info("not locked!\n"); 1597 return LG3306_UNLOCK; 1598} 1599 1600static int lgdt3306a_read_status(struct dvb_frontend *fe, 1601 enum fe_status *status) 1602{ 1603 struct lgdt3306a_state *state = fe->demodulator_priv; 1604 struct dtv_frontend_properties *c = &fe->dtv_property_cache; 1605 u16 strength = 0; 1606 int ret = 0; 1607 1608 if (fe->ops.tuner_ops.get_rf_strength) { 1609 ret = fe->ops.tuner_ops.get_rf_strength(fe, &strength); 1610 if (ret == 0) 1611 dbg_info("strength=%d\n", strength); 1612 else 1613 dbg_info("fe->ops.tuner_ops.get_rf_strength() failed\n"); 1614 } 1615 1616 *status = 0; 1617 if (lgdt3306a_neverlock_poll(state) == LG3306_NL_LOCK) { 1618 *status |= FE_HAS_SIGNAL; 1619 *status |= FE_HAS_CARRIER; 1620 1621 switch (state->current_modulation) { 1622 case QAM_256: 1623 case QAM_64: 1624 case QAM_AUTO: 1625 if (lgdt3306a_qam_lock_poll(state) == LG3306_LOCK) { 1626 *status |= FE_HAS_VITERBI; 1627 *status |= FE_HAS_SYNC; 1628 1629 *status |= FE_HAS_LOCK; 1630 } 1631 break; 1632 case VSB_8: 1633 if (lgdt3306a_vsb_lock_poll(state) == LG3306_LOCK) { 1634 *status |= FE_HAS_VITERBI; 1635 *status |= FE_HAS_SYNC; 1636 1637 *status |= FE_HAS_LOCK; 1638 1639 ret = lgdt3306a_monitor_vsb(state); 1640 } 1641 break; 1642 default: 1643 ret = -EINVAL; 1644 } 1645 1646 if (*status & FE_HAS_SYNC) { 1647 c->cnr.len = 1; 1648 c->cnr.stat[0].scale = FE_SCALE_DECIBEL; 1649 c->cnr.stat[0].svalue = lgdt3306a_calculate_snr_x100(state) * 10; 1650 } else { 1651 c->cnr.len = 1; 1652 c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE; 1653 } 1654 } 1655 return ret; 1656} 1657 1658 1659static int lgdt3306a_read_snr(struct dvb_frontend *fe, u16 *snr) 1660{ 1661 struct lgdt3306a_state *state = fe->demodulator_priv; 1662 1663 state->snr = lgdt3306a_calculate_snr_x100(state); 1664 /* report SNR in dB * 10 */ 1665 *snr = state->snr/10; 1666 1667 return 0; 1668} 1669 1670static int lgdt3306a_read_signal_strength(struct dvb_frontend *fe, 1671 u16 *strength) 1672{ 1673 /* 1674 * Calculate some sort of "strength" from SNR 1675 */ 1676 struct lgdt3306a_state *state = fe->demodulator_priv; 1677 u8 val; 1678 u16 snr; /* snr_x10 */ 1679 int ret; 1680 u32 ref_snr; /* snr*100 */ 1681 u32 str; 1682 1683 *strength = 0; 1684 1685 switch (state->current_modulation) { 1686 case VSB_8: 1687 ref_snr = 1600; /* 16dB */ 1688 break; 1689 case QAM_64: 1690 case QAM_256: 1691 case QAM_AUTO: 1692 /* need to know actual modulation to set proper SNR baseline */ 1693 ret = lgdt3306a_read_reg(state, 0x00a6, &val); 1694 if (lg_chkerr(ret)) 1695 goto fail; 1696 1697 if(val & 0x04) 1698 ref_snr = 2800; /* QAM-256 28dB */ 1699 else 1700 ref_snr = 2200; /* QAM-64 22dB */ 1701 break; 1702 default: 1703 return -EINVAL; 1704 } 1705 1706 ret = fe->ops.read_snr(fe, &snr); 1707 if (lg_chkerr(ret)) 1708 goto fail; 1709 1710 if (state->snr <= (ref_snr - 100)) 1711 str = 0; 1712 else if (state->snr <= ref_snr) 1713 str = (0xffff * 65) / 100; /* 65% */ 1714 else { 1715 str = state->snr - ref_snr; 1716 str /= 50; 1717 str += 78; /* 78%-100% */ 1718 if (str > 100) 1719 str = 100; 1720 str = (0xffff * str) / 100; 1721 } 1722 *strength = (u16)str; 1723 dbg_info("strength=%u\n", *strength); 1724 1725fail: 1726 return ret; 1727} 1728 1729/* ------------------------------------------------------------------------ */ 1730 1731static int lgdt3306a_read_ber(struct dvb_frontend *fe, u32 *ber) 1732{ 1733 struct lgdt3306a_state *state = fe->demodulator_priv; 1734 u32 tmp; 1735 1736 *ber = 0; 1737#if 1 1738 /* FGR - FIXME - I don't know what value is expected by dvb_core 1739 * what is the scale of the value?? */ 1740 tmp = read_reg(state, 0x00fc); /* NBERVALUE[24-31] */ 1741 tmp = (tmp << 8) | read_reg(state, 0x00fd); /* NBERVALUE[16-23] */ 1742 tmp = (tmp << 8) | read_reg(state, 0x00fe); /* NBERVALUE[8-15] */ 1743 tmp = (tmp << 8) | read_reg(state, 0x00ff); /* NBERVALUE[0-7] */ 1744 *ber = tmp; 1745 dbg_info("ber=%u\n", tmp); 1746#endif 1747 return 0; 1748} 1749 1750static int lgdt3306a_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks) 1751{ 1752 struct lgdt3306a_state *state = fe->demodulator_priv; 1753 1754 *ucblocks = 0; 1755#if 1 1756 /* FGR - FIXME - I don't know what value is expected by dvb_core 1757 * what happens when value wraps? */ 1758 *ucblocks = read_reg(state, 0x00f4); /* TPIFTPERRCNT[0-7] */ 1759 dbg_info("ucblocks=%u\n", *ucblocks); 1760#endif 1761 1762 return 0; 1763} 1764 1765static int lgdt3306a_tune(struct dvb_frontend *fe, bool re_tune, 1766 unsigned int mode_flags, unsigned int *delay, 1767 enum fe_status *status) 1768{ 1769 int ret = 0; 1770 struct lgdt3306a_state *state = fe->demodulator_priv; 1771 1772 dbg_info("re_tune=%u\n", re_tune); 1773 1774 if (re_tune) { 1775 state->current_frequency = -1; /* force re-tune */ 1776 ret = lgdt3306a_set_parameters(fe); 1777 if (ret != 0) 1778 return ret; 1779 } 1780 *delay = 125; 1781 ret = lgdt3306a_read_status(fe, status); 1782 1783 return ret; 1784} 1785 1786static int lgdt3306a_get_tune_settings(struct dvb_frontend *fe, 1787 struct dvb_frontend_tune_settings 1788 *fe_tune_settings) 1789{ 1790 fe_tune_settings->min_delay_ms = 100; 1791 dbg_info("\n"); 1792 return 0; 1793} 1794 1795static enum dvbfe_search lgdt3306a_search(struct dvb_frontend *fe) 1796{ 1797 enum fe_status status = 0; 1798 int ret; 1799 1800 /* set frontend */ 1801 ret = lgdt3306a_set_parameters(fe); 1802 if (ret) 1803 goto error; 1804 1805 ret = lgdt3306a_read_status(fe, &status); 1806 if (ret) 1807 goto error; 1808 1809 /* check if we have a valid signal */ 1810 if (status & FE_HAS_LOCK) 1811 return DVBFE_ALGO_SEARCH_SUCCESS; 1812 else 1813 return DVBFE_ALGO_SEARCH_AGAIN; 1814 1815error: 1816 dbg_info("failed (%d)\n", ret); 1817 return DVBFE_ALGO_SEARCH_ERROR; 1818} 1819 1820static void lgdt3306a_release(struct dvb_frontend *fe) 1821{ 1822 struct lgdt3306a_state *state = fe->demodulator_priv; 1823 1824 dbg_info("\n"); 1825 kfree(state); 1826} 1827 1828static const struct dvb_frontend_ops lgdt3306a_ops; 1829 1830struct dvb_frontend *lgdt3306a_attach(const struct lgdt3306a_config *config, 1831 struct i2c_adapter *i2c_adap) 1832{ 1833 struct lgdt3306a_state *state = NULL; 1834 int ret; 1835 u8 val; 1836 1837 dbg_info("(%d-%04x)\n", 1838 i2c_adap ? i2c_adapter_id(i2c_adap) : 0, 1839 config ? config->i2c_addr : 0); 1840 1841 state = kzalloc(sizeof(struct lgdt3306a_state), GFP_KERNEL); 1842 if (state == NULL) 1843 goto fail; 1844 1845 state->cfg = config; 1846 state->i2c_adap = i2c_adap; 1847 1848 memcpy(&state->frontend.ops, &lgdt3306a_ops, 1849 sizeof(struct dvb_frontend_ops)); 1850 state->frontend.demodulator_priv = state; 1851 1852 /* verify that we're talking to a lg3306a */ 1853 /* FGR - NOTE - there is no obvious ChipId to check; we check 1854 * some "known" bits after reset, but it's still just a guess */ 1855 ret = lgdt3306a_read_reg(state, 0x0000, &val); 1856 if (lg_chkerr(ret)) 1857 goto fail; 1858 if ((val & 0x74) != 0x74) { 1859 pr_warn("expected 0x74, got 0x%x\n", (val & 0x74)); 1860#if 0 1861 /* FIXME - re-enable when we know this is right */ 1862 goto fail; 1863#endif 1864 } 1865 ret = lgdt3306a_read_reg(state, 0x0001, &val); 1866 if (lg_chkerr(ret)) 1867 goto fail; 1868 if ((val & 0xf6) != 0xc6) { 1869 pr_warn("expected 0xc6, got 0x%x\n", (val & 0xf6)); 1870#if 0 1871 /* FIXME - re-enable when we know this is right */ 1872 goto fail; 1873#endif 1874 } 1875 ret = lgdt3306a_read_reg(state, 0x0002, &val); 1876 if (lg_chkerr(ret)) 1877 goto fail; 1878 if ((val & 0x73) != 0x03) { 1879 pr_warn("expected 0x03, got 0x%x\n", (val & 0x73)); 1880#if 0 1881 /* FIXME - re-enable when we know this is right */ 1882 goto fail; 1883#endif 1884 } 1885 1886 state->current_frequency = -1; 1887 state->current_modulation = -1; 1888 1889 lgdt3306a_sleep(state); 1890 1891 return &state->frontend; 1892 1893fail: 1894 pr_warn("unable to detect LGDT3306A hardware\n"); 1895 kfree(state); 1896 return NULL; 1897} 1898EXPORT_SYMBOL_GPL(lgdt3306a_attach); 1899 1900#ifdef DBG_DUMP 1901 1902static const short regtab[] = { 1903 0x0000, /* SOFTRSTB 1'b1 1'b1 1'b1 ADCPDB 1'b1 PLLPDB GBBPDB 11111111 */ 1904 0x0001, /* 1'b1 1'b1 1'b0 1'b0 AUTORPTRS */ 1905 0x0002, /* NI2CRPTEN 1'b0 1'b0 1'b0 SPECINVAUT */ 1906 0x0003, /* AGCRFOUT */ 1907 0x0004, /* ADCSEL1V ADCCNT ADCCNF ADCCNS ADCCLKPLL */ 1908 0x0005, /* PLLINDIVSE */ 1909 0x0006, /* PLLCTRL[7:0] 11100001 */ 1910 0x0007, /* SYSINITWAITTIME[7:0] (msec) 00001000 */ 1911 0x0008, /* STDOPMODE[7:0] 10000000 */ 1912 0x0009, /* 1'b0 1'b0 1'b0 STDOPDETTMODE[2:0] STDOPDETCMODE[1:0] 00011110 */ 1913 0x000a, /* DAFTEN 1'b1 x x SCSYSLOCK */ 1914 0x000b, /* SCSYSLOCKCHKTIME[7:0] (10msec) 01100100 */ 1915 0x000d, /* x SAMPLING4 */ 1916 0x000e, /* SAMFREQ[15:8] 00000000 */ 1917 0x000f, /* SAMFREQ[7:0] 00000000 */ 1918 0x0010, /* IFFREQ[15:8] 01100000 */ 1919 0x0011, /* IFFREQ[7:0] 00000000 */ 1920 0x0012, /* AGCEN AGCREFMO */ 1921 0x0013, /* AGCRFFIXB AGCIFFIXB AGCLOCKDETRNGSEL[1:0] 1'b1 1'b0 1'b0 1'b0 11101000 */ 1922 0x0014, /* AGCFIXVALUE[7:0] 01111111 */ 1923 0x0015, /* AGCREF[15:8] 00001010 */ 1924 0x0016, /* AGCREF[7:0] 11100100 */ 1925 0x0017, /* AGCDELAY[7:0] 00100000 */ 1926 0x0018, /* AGCRFBW[3:0] AGCIFBW[3:0] 10001000 */ 1927 0x0019, /* AGCUDOUTMODE[1:0] AGCUDCTRLLEN[1:0] AGCUDCTRL */ 1928 0x001c, /* 1'b1 PFEN MFEN AICCVSYNC */ 1929 0x001d, /* 1'b0 1'b1 1'b0 1'b1 AICCVSYNC */ 1930 0x001e, /* AICCALPHA[3:0] 1'b1 1'b0 1'b1 1'b0 01111010 */ 1931 0x001f, /* AICCDETTH[19:16] AICCOFFTH[19:16] 00000000 */ 1932 0x0020, /* AICCDETTH[15:8] 01111100 */ 1933 0x0021, /* AICCDETTH[7:0] 00000000 */ 1934 0x0022, /* AICCOFFTH[15:8] 00000101 */ 1935 0x0023, /* AICCOFFTH[7:0] 11100000 */ 1936 0x0024, /* AICCOPMODE3[1:0] AICCOPMODE2[1:0] AICCOPMODE1[1:0] AICCOPMODE0[1:0] 00000000 */ 1937 0x0025, /* AICCFIXFREQ3[23:16] 00000000 */ 1938 0x0026, /* AICCFIXFREQ3[15:8] 00000000 */ 1939 0x0027, /* AICCFIXFREQ3[7:0] 00000000 */ 1940 0x0028, /* AICCFIXFREQ2[23:16] 00000000 */ 1941 0x0029, /* AICCFIXFREQ2[15:8] 00000000 */ 1942 0x002a, /* AICCFIXFREQ2[7:0] 00000000 */ 1943 0x002b, /* AICCFIXFREQ1[23:16] 00000000 */ 1944 0x002c, /* AICCFIXFREQ1[15:8] 00000000 */ 1945 0x002d, /* AICCFIXFREQ1[7:0] 00000000 */ 1946 0x002e, /* AICCFIXFREQ0[23:16] 00000000 */ 1947 0x002f, /* AICCFIXFREQ0[15:8] 00000000 */ 1948 0x0030, /* AICCFIXFREQ0[7:0] 00000000 */ 1949 0x0031, /* 1'b0 1'b1 1'b0 1'b0 x DAGC1STER */ 1950 0x0032, /* DAGC1STEN DAGC1STER */ 1951 0x0033, /* DAGC1STREF[15:8] 00001010 */ 1952 0x0034, /* DAGC1STREF[7:0] 11100100 */ 1953 0x0035, /* DAGC2NDE */ 1954 0x0036, /* DAGC2NDREF[15:8] 00001010 */ 1955 0x0037, /* DAGC2NDREF[7:0] 10000000 */ 1956 0x0038, /* DAGC2NDLOCKDETRNGSEL[1:0] */ 1957 0x003d, /* 1'b1 SAMGEARS */ 1958 0x0040, /* SAMLFGMA */ 1959 0x0041, /* SAMLFBWM */ 1960 0x0044, /* 1'b1 CRGEARSHE */ 1961 0x0045, /* CRLFGMAN */ 1962 0x0046, /* CFLFBWMA */ 1963 0x0047, /* CRLFGMAN */ 1964 0x0048, /* x x x x CRLFGSTEP_VS[3:0] xxxx1001 */ 1965 0x0049, /* CRLFBWMA */ 1966 0x004a, /* CRLFBWMA */ 1967 0x0050, /* 1'b0 1'b1 1'b1 1'b0 MSECALCDA */ 1968 0x0070, /* TPOUTEN TPIFEN TPCLKOUTE */ 1969 0x0071, /* TPSENB TPSSOPBITE */ 1970 0x0073, /* TP47HINS x x CHBERINT PERMODE[1:0] PERINT[1:0] 1xx11100 */ 1971 0x0075, /* x x x x x IQSWAPCTRL[2:0] xxxxx000 */ 1972 0x0076, /* NBERCON NBERST NBERPOL NBERWSYN */ 1973 0x0077, /* x NBERLOSTTH[2:0] NBERACQTH[3:0] x0000000 */ 1974 0x0078, /* NBERPOLY[31:24] 00000000 */ 1975 0x0079, /* NBERPOLY[23:16] 00000000 */ 1976 0x007a, /* NBERPOLY[15:8] 00000000 */ 1977 0x007b, /* NBERPOLY[7:0] 00000000 */ 1978 0x007c, /* NBERPED[31:24] 00000000 */ 1979 0x007d, /* NBERPED[23:16] 00000000 */ 1980 0x007e, /* NBERPED[15:8] 00000000 */ 1981 0x007f, /* NBERPED[7:0] 00000000 */ 1982 0x0080, /* x AGCLOCK DAGCLOCK SYSLOCK x x NEVERLOCK[1:0] */ 1983 0x0085, /* SPECINVST */ 1984 0x0088, /* SYSLOCKTIME[15:8] */ 1985 0x0089, /* SYSLOCKTIME[7:0] */ 1986 0x008c, /* FECLOCKTIME[15:8] */ 1987 0x008d, /* FECLOCKTIME[7:0] */ 1988 0x008e, /* AGCACCOUT[15:8] */ 1989 0x008f, /* AGCACCOUT[7:0] */ 1990 0x0090, /* AICCREJSTATUS[3:0] AICCREJBUSY[3:0] */ 1991 0x0091, /* AICCVSYNC */ 1992 0x009c, /* CARRFREQOFFSET[15:8] */ 1993 0x009d, /* CARRFREQOFFSET[7:0] */ 1994 0x00a1, /* SAMFREQOFFSET[23:16] */ 1995 0x00a2, /* SAMFREQOFFSET[15:8] */ 1996 0x00a3, /* SAMFREQOFFSET[7:0] */ 1997 0x00a6, /* SYNCLOCK SYNCLOCKH */ 1998#if 0 /* covered elsewhere */ 1999 0x00e8, /* CONSTPWR[15:8] */ 2000 0x00e9, /* CONSTPWR[7:0] */ 2001 0x00ea, /* BMSE[15:8] */ 2002 0x00eb, /* BMSE[7:0] */ 2003 0x00ec, /* MSE[15:8] */ 2004 0x00ed, /* MSE[7:0] */ 2005 0x00ee, /* CONSTI[7:0] */ 2006 0x00ef, /* CONSTQ[7:0] */ 2007#endif 2008 0x00f4, /* TPIFTPERRCNT[7:0] */ 2009 0x00f5, /* TPCORREC */ 2010 0x00f6, /* VBBER[15:8] */ 2011 0x00f7, /* VBBER[7:0] */ 2012 0x00f8, /* VABER[15:8] */ 2013 0x00f9, /* VABER[7:0] */ 2014 0x00fa, /* TPERRCNT[7:0] */ 2015 0x00fb, /* NBERLOCK x x x x x x x */ 2016 0x00fc, /* NBERVALUE[31:24] */ 2017 0x00fd, /* NBERVALUE[23:16] */ 2018 0x00fe, /* NBERVALUE[15:8] */ 2019 0x00ff, /* NBERVALUE[7:0] */ 2020 0x1000, /* 1'b0 WODAGCOU */ 2021 0x1005, /* x x 1'b1 1'b1 x SRD_Q_QM */ 2022 0x1009, /* SRDWAITTIME[7:0] (10msec) 00100011 */ 2023 0x100a, /* SRDWAITTIME_CQS[7:0] (msec) 01100100 */ 2024 0x101a, /* x 1'b1 1'b0 1'b0 x QMDQAMMODE[2:0] x100x010 */ 2025 0x1036, /* 1'b0 1'b1 1'b0 1'b0 SAMGSEND_CQS[3:0] 01001110 */ 2026 0x103c, /* SAMGSAUTOSTL_V[3:0] SAMGSAUTOEDL_V[3:0] 01000110 */ 2027 0x103d, /* 1'b1 1'b1 SAMCNORMBP_V[1:0] 1'b0 1'b0 SAMMODESEL_V[1:0] 11100001 */ 2028 0x103f, /* SAMZTEDSE */ 2029 0x105d, /* EQSTATUSE */ 2030 0x105f, /* x PMAPG2_V[2:0] x DMAPG2_V[2:0] x001x011 */ 2031 0x1060, /* 1'b1 EQSTATUSE */ 2032 0x1061, /* CRMAPBWSTL_V[3:0] CRMAPBWEDL_V[3:0] 00000100 */ 2033 0x1065, /* 1'b0 x CRMODE_V[1:0] 1'b1 x 1'b1 x 0x111x1x */ 2034 0x1066, /* 1'b0 1'b0 1'b1 1'b0 1'b1 PNBOOSTSE */ 2035 0x1068, /* CREPHNGAIN2_V[3:0] CREPHNPBW_V[3:0] 10010001 */ 2036 0x106e, /* x x x x x CREPHNEN_ */ 2037 0x106f, /* CREPHNTH_V[7:0] 00010101 */ 2038 0x1072, /* CRSWEEPN */ 2039 0x1073, /* CRPGAIN_V[3:0] x x 1'b1 1'b1 1001xx11 */ 2040 0x1074, /* CRPBW_V[3:0] x x 1'b1 1'b1 0001xx11 */ 2041 0x1080, /* DAFTSTATUS[1:0] x x x x x x */ 2042 0x1081, /* SRDSTATUS[1:0] x x x x x SRDLOCK */ 2043 0x10a9, /* EQSTATUS_CQS[1:0] x x x x x x */ 2044 0x10b7, /* EQSTATUS_V[1:0] x x x x x x */ 2045#if 0 /* SMART_ANT */ 2046 0x1f00, /* MODEDETE */ 2047 0x1f01, /* x x x x x x x SFNRST xxxxxxx0 */ 2048 0x1f03, /* NUMOFANT[7:0] 10000000 */ 2049 0x1f04, /* x SELMASK[6:0] x0000000 */ 2050 0x1f05, /* x SETMASK[6:0] x0000000 */ 2051 0x1f06, /* x TXDATA[6:0] x0000000 */ 2052 0x1f07, /* x CHNUMBER[6:0] x0000000 */ 2053 0x1f09, /* AGCTIME[23:16] 10011000 */ 2054 0x1f0a, /* AGCTIME[15:8] 10010110 */ 2055 0x1f0b, /* AGCTIME[7:0] 10000000 */ 2056 0x1f0c, /* ANTTIME[31:24] 00000000 */ 2057 0x1f0d, /* ANTTIME[23:16] 00000011 */ 2058 0x1f0e, /* ANTTIME[15:8] 10010000 */ 2059 0x1f0f, /* ANTTIME[7:0] 10010000 */ 2060 0x1f11, /* SYNCTIME[23:16] 10011000 */ 2061 0x1f12, /* SYNCTIME[15:8] 10010110 */ 2062 0x1f13, /* SYNCTIME[7:0] 10000000 */ 2063 0x1f14, /* SNRTIME[31:24] 00000001 */ 2064 0x1f15, /* SNRTIME[23:16] 01111101 */ 2065 0x1f16, /* SNRTIME[15:8] 01111000 */ 2066 0x1f17, /* SNRTIME[7:0] 01000000 */ 2067 0x1f19, /* FECTIME[23:16] 00000000 */ 2068 0x1f1a, /* FECTIME[15:8] 01110010 */ 2069 0x1f1b, /* FECTIME[7:0] 01110000 */ 2070 0x1f1d, /* FECTHD[7:0] 00000011 */ 2071 0x1f1f, /* SNRTHD[23:16] 00001000 */ 2072 0x1f20, /* SNRTHD[15:8] 01111111 */ 2073 0x1f21, /* SNRTHD[7:0] 10000101 */ 2074 0x1f80, /* IRQFLG x x SFSDRFLG MODEBFLG SAVEFLG SCANFLG TRACKFLG */ 2075 0x1f81, /* x SYNCCON SNRCON FECCON x STDBUSY SYNCRST AGCFZCO */ 2076 0x1f82, /* x x x SCANOPCD[4:0] */ 2077 0x1f83, /* x x x x MAINOPCD[3:0] */ 2078 0x1f84, /* x x RXDATA[13:8] */ 2079 0x1f85, /* RXDATA[7:0] */ 2080 0x1f86, /* x x SDTDATA[13:8] */ 2081 0x1f87, /* SDTDATA[7:0] */ 2082 0x1f89, /* ANTSNR[23:16] */ 2083 0x1f8a, /* ANTSNR[15:8] */ 2084 0x1f8b, /* ANTSNR[7:0] */ 2085 0x1f8c, /* x x x x ANTFEC[13:8] */ 2086 0x1f8d, /* ANTFEC[7:0] */ 2087 0x1f8e, /* MAXCNT[7:0] */ 2088 0x1f8f, /* SCANCNT[7:0] */ 2089 0x1f91, /* MAXPW[23:16] */ 2090 0x1f92, /* MAXPW[15:8] */ 2091 0x1f93, /* MAXPW[7:0] */ 2092 0x1f95, /* CURPWMSE[23:16] */ 2093 0x1f96, /* CURPWMSE[15:8] */ 2094 0x1f97, /* CURPWMSE[7:0] */ 2095#endif /* SMART_ANT */ 2096 0x211f, /* 1'b1 1'b1 1'b1 CIRQEN x x 1'b0 1'b0 1111xx00 */ 2097 0x212a, /* EQAUTOST */ 2098 0x2122, /* CHFAST[7:0] 01100000 */ 2099 0x212b, /* FFFSTEP_V[3:0] x FBFSTEP_V[2:0] 0001x001 */ 2100 0x212c, /* PHDEROTBWSEL[3:0] 1'b1 1'b1 1'b1 1'b0 10001110 */ 2101 0x212d, /* 1'b1 1'b1 1'b1 1'b1 x x TPIFLOCKS */ 2102 0x2135, /* DYNTRACKFDEQ[3:0] x 1'b0 1'b0 1'b0 1010x000 */ 2103 0x2141, /* TRMODE[1:0] 1'b1 1'b1 1'b0 1'b1 1'b1 1'b1 01110111 */ 2104 0x2162, /* AICCCTRLE */ 2105 0x2173, /* PHNCNFCNT[7:0] 00000100 */ 2106 0x2179, /* 1'b0 1'b0 1'b0 1'b1 x BADSINGLEDYNTRACKFBF[2:0] 0001x001 */ 2107 0x217a, /* 1'b0 1'b0 1'b0 1'b1 x BADSLOWSINGLEDYNTRACKFBF[2:0] 0001x001 */ 2108 0x217e, /* CNFCNTTPIF[7:0] 00001000 */ 2109 0x217f, /* TPERRCNTTPIF[7:0] 00000001 */ 2110 0x2180, /* x x x x x x FBDLYCIR[9:8] */ 2111 0x2181, /* FBDLYCIR[7:0] */ 2112 0x2185, /* MAXPWRMAIN[7:0] */ 2113 0x2191, /* NCOMBDET x x x x x x x */ 2114 0x2199, /* x MAINSTRON */ 2115 0x219a, /* FFFEQSTEPOUT_V[3:0] FBFSTEPOUT_V[2:0] */ 2116 0x21a1, /* x x SNRREF[5:0] */ 2117 0x2845, /* 1'b0 1'b1 x x FFFSTEP_CQS[1:0] FFFCENTERTAP[1:0] 01xx1110 */ 2118 0x2846, /* 1'b0 x 1'b0 1'b1 FBFSTEP_CQS[1:0] 1'b1 1'b0 0x011110 */ 2119 0x2847, /* ENNOSIGDE */ 2120 0x2849, /* 1'b1 1'b1 NOUSENOSI */ 2121 0x284a, /* EQINITWAITTIME[7:0] 01100100 */ 2122 0x3000, /* 1'b1 1'b1 1'b1 x x x 1'b0 RPTRSTM */ 2123 0x3001, /* RPTRSTWAITTIME[7:0] (100msec) 00110010 */ 2124 0x3031, /* FRAMELOC */ 2125 0x3032, /* 1'b1 1'b0 1'b0 1'b0 x x FRAMELOCKMODE_CQS[1:0] 1000xx11 */ 2126 0x30a9, /* VDLOCK_Q FRAMELOCK */ 2127 0x30aa, /* MPEGLOCK */ 2128}; 2129 2130#define numDumpRegs (ARRAY_SIZE(regtab)) 2131static u8 regval1[numDumpRegs] = {0, }; 2132static u8 regval2[numDumpRegs] = {0, }; 2133 2134static void lgdt3306a_DumpAllRegs(struct lgdt3306a_state *state) 2135{ 2136 memset(regval2, 0xff, sizeof(regval2)); 2137 lgdt3306a_DumpRegs(state); 2138} 2139 2140static void lgdt3306a_DumpRegs(struct lgdt3306a_state *state) 2141{ 2142 int i; 2143 int sav_debug = debug; 2144 2145 if ((debug & DBG_DUMP) == 0) 2146 return; 2147 debug &= ~DBG_REG; /* suppress DBG_REG during reg dump */ 2148 2149 lg_debug("\n"); 2150 2151 for (i = 0; i < numDumpRegs; i++) { 2152 lgdt3306a_read_reg(state, regtab[i], ®val1[i]); 2153 if (regval1[i] != regval2[i]) { 2154 lg_debug(" %04X = %02X\n", regtab[i], regval1[i]); 2155 regval2[i] = regval1[i]; 2156 } 2157 } 2158 debug = sav_debug; 2159} 2160#endif /* DBG_DUMP */ 2161 2162 2163 2164static const struct dvb_frontend_ops lgdt3306a_ops = { 2165 .delsys = { SYS_ATSC, SYS_DVBC_ANNEX_B }, 2166 .info = { 2167 .name = "LG Electronics LGDT3306A VSB/QAM Frontend", 2168 .frequency_min_hz = 54 * MHz, 2169 .frequency_max_hz = 858 * MHz, 2170 .frequency_stepsize_hz = 62500, 2171 .caps = FE_CAN_QAM_AUTO | FE_CAN_QAM_64 | FE_CAN_QAM_256 | FE_CAN_8VSB 2172 }, 2173 .i2c_gate_ctrl = lgdt3306a_i2c_gate_ctrl, 2174 .init = lgdt3306a_init, 2175 .sleep = lgdt3306a_fe_sleep, 2176 /* if this is set, it overrides the default swzigzag */ 2177 .tune = lgdt3306a_tune, 2178 .set_frontend = lgdt3306a_set_parameters, 2179 .get_frontend = lgdt3306a_get_frontend, 2180 .get_frontend_algo = lgdt3306a_get_frontend_algo, 2181 .get_tune_settings = lgdt3306a_get_tune_settings, 2182 .read_status = lgdt3306a_read_status, 2183 .read_ber = lgdt3306a_read_ber, 2184 .read_signal_strength = lgdt3306a_read_signal_strength, 2185 .read_snr = lgdt3306a_read_snr, 2186 .read_ucblocks = lgdt3306a_read_ucblocks, 2187 .release = lgdt3306a_release, 2188 .ts_bus_ctrl = lgdt3306a_ts_bus_ctrl, 2189 .search = lgdt3306a_search, 2190}; 2191 2192static int lgdt3306a_select(struct i2c_mux_core *muxc, u32 chan) 2193{ 2194 struct i2c_client *client = i2c_mux_priv(muxc); 2195 struct lgdt3306a_state *state = i2c_get_clientdata(client); 2196 2197 return lgdt3306a_i2c_gate_ctrl(&state->frontend, 1); 2198} 2199 2200static int lgdt3306a_deselect(struct i2c_mux_core *muxc, u32 chan) 2201{ 2202 struct i2c_client *client = i2c_mux_priv(muxc); 2203 struct lgdt3306a_state *state = i2c_get_clientdata(client); 2204 2205 return lgdt3306a_i2c_gate_ctrl(&state->frontend, 0); 2206} 2207 2208static int lgdt3306a_probe(struct i2c_client *client, 2209 const struct i2c_device_id *id) 2210{ 2211 struct lgdt3306a_config *config; 2212 struct lgdt3306a_state *state; 2213 struct dvb_frontend *fe; 2214 int ret; 2215 2216 config = kmemdup(client->dev.platform_data, 2217 sizeof(struct lgdt3306a_config), GFP_KERNEL); 2218 if (config == NULL) { 2219 ret = -ENOMEM; 2220 goto fail; 2221 } 2222 2223 config->i2c_addr = client->addr; 2224 fe = lgdt3306a_attach(config, client->adapter); 2225 if (fe == NULL) { 2226 ret = -ENODEV; 2227 goto err_fe; 2228 } 2229 2230 i2c_set_clientdata(client, fe->demodulator_priv); 2231 state = fe->demodulator_priv; 2232 state->frontend.ops.release = NULL; 2233 2234 /* create mux i2c adapter for tuner */ 2235 state->muxc = i2c_mux_alloc(client->adapter, &client->dev, 2236 1, 0, I2C_MUX_LOCKED, 2237 lgdt3306a_select, lgdt3306a_deselect); 2238 if (!state->muxc) { 2239 ret = -ENOMEM; 2240 goto err_kfree; 2241 } 2242 state->muxc->priv = client; 2243 ret = i2c_mux_add_adapter(state->muxc, 0, 0, 0); 2244 if (ret) 2245 goto err_kfree; 2246 2247 /* create dvb_frontend */ 2248 fe->ops.i2c_gate_ctrl = NULL; 2249 *config->i2c_adapter = state->muxc->adapter[0]; 2250 *config->fe = fe; 2251 2252 dev_info(&client->dev, "LG Electronics LGDT3306A successfully identified\n"); 2253 2254 return 0; 2255 2256err_kfree: 2257 kfree(state); 2258err_fe: 2259 kfree(config); 2260fail: 2261 dev_warn(&client->dev, "probe failed = %d\n", ret); 2262 return ret; 2263} 2264 2265static int lgdt3306a_remove(struct i2c_client *client) 2266{ 2267 struct lgdt3306a_state *state = i2c_get_clientdata(client); 2268 2269 i2c_mux_del_adapters(state->muxc); 2270 2271 state->frontend.ops.release = NULL; 2272 state->frontend.demodulator_priv = NULL; 2273 2274 kfree(state->cfg); 2275 kfree(state); 2276 2277 return 0; 2278} 2279 2280static const struct i2c_device_id lgdt3306a_id_table[] = { 2281 {"lgdt3306a", 0}, 2282 {} 2283}; 2284MODULE_DEVICE_TABLE(i2c, lgdt3306a_id_table); 2285 2286static struct i2c_driver lgdt3306a_driver = { 2287 .driver = { 2288 .name = "lgdt3306a", 2289 .suppress_bind_attrs = true, 2290 }, 2291 .probe = lgdt3306a_probe, 2292 .remove = lgdt3306a_remove, 2293 .id_table = lgdt3306a_id_table, 2294}; 2295 2296module_i2c_driver(lgdt3306a_driver); 2297 2298MODULE_DESCRIPTION("LG Electronics LGDT3306A ATSC/QAM-B Demodulator Driver"); 2299MODULE_AUTHOR("Fred Richter <frichter@hauppauge.com>"); 2300MODULE_LICENSE("GPL"); 2301MODULE_VERSION("0.2"); 2302