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tda18271-fe.c
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linux-6.19.14/drivers/media/tuners/tda18271-fe.c
1// SPDX-License-Identifier: GPL-2.0-or-later 2/* 3 tda18271-fe.c - driver for the Philips / NXP TDA18271 silicon tuner 4 5 Copyright (C) 2007, 2008 Michael Krufky <mkrufky@linuxtv.org> 6 7*/ 8 9#include "tda18271-priv.h" 10#include "tda8290.h" 11 12#include <linux/delay.h> 13#include <linux/videodev2.h> 14 15int tda18271_debug; 16module_param_named(debug, tda18271_debug, int, 0644); 17MODULE_PARM_DESC(debug, "set debug level (info=1, map=2, reg=4, adv=8, cal=16 (or-able))"); 18 19static int tda18271_cal_on_startup = -1; 20module_param_named(cal, tda18271_cal_on_startup, int, 0644); 21MODULE_PARM_DESC(cal, "perform RF tracking filter calibration on startup"); 22 23static DEFINE_MUTEX(tda18271_list_mutex); 24static LIST_HEAD(hybrid_tuner_instance_list); 25 26/*---------------------------------------------------------------------*/ 27 28static int tda18271_toggle_output(struct dvb_frontend *fe, int standby) 29{ 30 struct tda18271_priv *priv = fe->tuner_priv; 31 32 int ret = tda18271_set_standby_mode(fe, standby ? 1 : 0, 33 priv->output_opt & TDA18271_OUTPUT_LT_OFF ? 1 : 0, 34 priv->output_opt & TDA18271_OUTPUT_XT_OFF ? 1 : 0); 35 36 if (tda_fail(ret)) 37 goto fail; 38 39 tda_dbg("%s mode: xtal oscillator %s, slave tuner loop through %s\n", 40 standby ? "standby" : "active", 41 priv->output_opt & TDA18271_OUTPUT_XT_OFF ? "off" : "on", 42 priv->output_opt & TDA18271_OUTPUT_LT_OFF ? "off" : "on"); 43fail: 44 return ret; 45} 46 47/*---------------------------------------------------------------------*/ 48 49static inline int charge_pump_source(struct dvb_frontend *fe, int force) 50{ 51 struct tda18271_priv *priv = fe->tuner_priv; 52 return tda18271_charge_pump_source(fe, 53 (priv->role == TDA18271_SLAVE) ? 54 TDA18271_CAL_PLL : 55 TDA18271_MAIN_PLL, force); 56} 57 58static inline void tda18271_set_if_notch(struct dvb_frontend *fe) 59{ 60 struct tda18271_priv *priv = fe->tuner_priv; 61 unsigned char *regs = priv->tda18271_regs; 62 63 switch (priv->mode) { 64 case TDA18271_ANALOG: 65 regs[R_MPD] &= ~0x80; /* IF notch = 0 */ 66 break; 67 case TDA18271_DIGITAL: 68 regs[R_MPD] |= 0x80; /* IF notch = 1 */ 69 break; 70 } 71} 72 73static int tda18271_channel_configuration(struct dvb_frontend *fe, 74 struct tda18271_std_map_item *map, 75 u32 freq, u32 bw) 76{ 77 struct tda18271_priv *priv = fe->tuner_priv; 78 unsigned char *regs = priv->tda18271_regs; 79 int ret; 80 u32 N; 81 82 /* update TV broadcast parameters */ 83 84 /* set standard */ 85 regs[R_EP3] &= ~0x1f; /* clear std bits */ 86 regs[R_EP3] |= (map->agc_mode << 3) | map->std; 87 88 if (priv->id == TDA18271HDC2) { 89 /* set rfagc to high speed mode */ 90 regs[R_EP3] &= ~0x04; 91 } 92 93 /* set cal mode to normal */ 94 regs[R_EP4] &= ~0x03; 95 96 /* update IF output level */ 97 regs[R_EP4] &= ~0x1c; /* clear if level bits */ 98 regs[R_EP4] |= (map->if_lvl << 2); 99 100 /* update FM_RFn */ 101 regs[R_EP4] &= ~0x80; 102 regs[R_EP4] |= map->fm_rfn << 7; 103 104 /* update rf top / if top */ 105 regs[R_EB22] = 0x00; 106 regs[R_EB22] |= map->rfagc_top; 107 ret = tda18271_write_regs(fe, R_EB22, 1); 108 if (tda_fail(ret)) 109 goto fail; 110 111 /* --------------------------------------------------------------- */ 112 113 /* disable Power Level Indicator */ 114 regs[R_EP1] |= 0x40; 115 116 /* make sure thermometer is off */ 117 regs[R_TM] &= ~0x10; 118 119 /* frequency dependent parameters */ 120 121 tda18271_calc_ir_measure(fe, &freq); 122 123 tda18271_calc_bp_filter(fe, &freq); 124 125 tda18271_calc_rf_band(fe, &freq); 126 127 tda18271_calc_gain_taper(fe, &freq); 128 129 /* --------------------------------------------------------------- */ 130 131 /* dual tuner and agc1 extra configuration */ 132 133 switch (priv->role) { 134 case TDA18271_MASTER: 135 regs[R_EB1] |= 0x04; /* main vco */ 136 break; 137 case TDA18271_SLAVE: 138 regs[R_EB1] &= ~0x04; /* cal vco */ 139 break; 140 } 141 142 /* agc1 always active */ 143 regs[R_EB1] &= ~0x02; 144 145 /* agc1 has priority on agc2 */ 146 regs[R_EB1] &= ~0x01; 147 148 ret = tda18271_write_regs(fe, R_EB1, 1); 149 if (tda_fail(ret)) 150 goto fail; 151 152 /* --------------------------------------------------------------- */ 153 154 N = map->if_freq * 1000 + freq; 155 156 switch (priv->role) { 157 case TDA18271_MASTER: 158 tda18271_calc_main_pll(fe, N); 159 tda18271_set_if_notch(fe); 160 tda18271_write_regs(fe, R_MPD, 4); 161 break; 162 case TDA18271_SLAVE: 163 tda18271_calc_cal_pll(fe, N); 164 tda18271_write_regs(fe, R_CPD, 4); 165 166 regs[R_MPD] = regs[R_CPD] & 0x7f; 167 tda18271_set_if_notch(fe); 168 tda18271_write_regs(fe, R_MPD, 1); 169 break; 170 } 171 172 ret = tda18271_write_regs(fe, R_TM, 7); 173 if (tda_fail(ret)) 174 goto fail; 175 176 /* force charge pump source */ 177 charge_pump_source(fe, 1); 178 179 msleep(1); 180 181 /* return pll to normal operation */ 182 charge_pump_source(fe, 0); 183 184 msleep(20); 185 186 if (priv->id == TDA18271HDC2) { 187 /* set rfagc to normal speed mode */ 188 if (map->fm_rfn) 189 regs[R_EP3] &= ~0x04; 190 else 191 regs[R_EP3] |= 0x04; 192 ret = tda18271_write_regs(fe, R_EP3, 1); 193 } 194fail: 195 return ret; 196} 197 198static int tda18271_read_thermometer(struct dvb_frontend *fe) 199{ 200 struct tda18271_priv *priv = fe->tuner_priv; 201 unsigned char *regs = priv->tda18271_regs; 202 int tm; 203 204 /* switch thermometer on */ 205 regs[R_TM] |= 0x10; 206 tda18271_write_regs(fe, R_TM, 1); 207 208 /* read thermometer info */ 209 tda18271_read_regs(fe); 210 211 if ((((regs[R_TM] & 0x0f) == 0x00) && ((regs[R_TM] & 0x20) == 0x20)) || 212 (((regs[R_TM] & 0x0f) == 0x08) && ((regs[R_TM] & 0x20) == 0x00))) { 213 214 if ((regs[R_TM] & 0x20) == 0x20) 215 regs[R_TM] &= ~0x20; 216 else 217 regs[R_TM] |= 0x20; 218 219 tda18271_write_regs(fe, R_TM, 1); 220 221 msleep(10); /* temperature sensing */ 222 223 /* read thermometer info */ 224 tda18271_read_regs(fe); 225 } 226 227 tm = tda18271_lookup_thermometer(fe); 228 229 /* switch thermometer off */ 230 regs[R_TM] &= ~0x10; 231 tda18271_write_regs(fe, R_TM, 1); 232 233 /* set CAL mode to normal */ 234 regs[R_EP4] &= ~0x03; 235 tda18271_write_regs(fe, R_EP4, 1); 236 237 return tm; 238} 239 240/* ------------------------------------------------------------------ */ 241 242static int tda18271c2_rf_tracking_filters_correction(struct dvb_frontend *fe, 243 u32 freq) 244{ 245 struct tda18271_priv *priv = fe->tuner_priv; 246 struct tda18271_rf_tracking_filter_cal *map = priv->rf_cal_state; 247 unsigned char *regs = priv->tda18271_regs; 248 int i, ret; 249 u8 tm_current, dc_over_dt, rf_tab; 250 s32 rfcal_comp, approx; 251 252 /* power up */ 253 ret = tda18271_set_standby_mode(fe, 0, 0, 0); 254 if (tda_fail(ret)) 255 goto fail; 256 257 /* read die current temperature */ 258 tm_current = tda18271_read_thermometer(fe); 259 260 /* frequency dependent parameters */ 261 262 tda18271_calc_rf_cal(fe, &freq); 263 rf_tab = regs[R_EB14]; 264 265 i = tda18271_lookup_rf_band(fe, &freq, NULL); 266 if (tda_fail(i)) 267 return i; 268 269 if ((0 == map[i].rf3) || (freq / 1000 < map[i].rf2)) { 270 approx = map[i].rf_a1 * (s32)(freq / 1000 - map[i].rf1) + 271 map[i].rf_b1 + rf_tab; 272 } else { 273 approx = map[i].rf_a2 * (s32)(freq / 1000 - map[i].rf2) + 274 map[i].rf_b2 + rf_tab; 275 } 276 277 if (approx < 0) 278 approx = 0; 279 if (approx > 255) 280 approx = 255; 281 282 ret = tda18271_lookup_map(fe, RF_CAL_DC_OVER_DT, &freq, &dc_over_dt); 283 if (tda_fail(ret)) 284 goto fail; 285 286 /* calculate temperature compensation */ 287 rfcal_comp = dc_over_dt * (s32)(tm_current - priv->tm_rfcal) / 1000; 288 289 regs[R_EB14] = (unsigned char)(approx + rfcal_comp); 290 ret = tda18271_write_regs(fe, R_EB14, 1); 291fail: 292 return ret; 293} 294 295static int tda18271_por(struct dvb_frontend *fe) 296{ 297 struct tda18271_priv *priv = fe->tuner_priv; 298 unsigned char *regs = priv->tda18271_regs; 299 int ret; 300 301 /* power up detector 1 */ 302 regs[R_EB12] &= ~0x20; 303 ret = tda18271_write_regs(fe, R_EB12, 1); 304 if (tda_fail(ret)) 305 goto fail; 306 307 regs[R_EB18] &= ~0x80; /* turn agc1 loop on */ 308 regs[R_EB18] &= ~0x03; /* set agc1_gain to 6 dB */ 309 ret = tda18271_write_regs(fe, R_EB18, 1); 310 if (tda_fail(ret)) 311 goto fail; 312 313 regs[R_EB21] |= 0x03; /* set agc2_gain to -6 dB */ 314 315 /* POR mode */ 316 ret = tda18271_set_standby_mode(fe, 1, 0, 0); 317 if (tda_fail(ret)) 318 goto fail; 319 320 /* disable 1.5 MHz low pass filter */ 321 regs[R_EB23] &= ~0x04; /* forcelp_fc2_en = 0 */ 322 regs[R_EB23] &= ~0x02; /* XXX: lp_fc[2] = 0 */ 323 ret = tda18271_write_regs(fe, R_EB21, 3); 324fail: 325 return ret; 326} 327 328static int tda18271_calibrate_rf(struct dvb_frontend *fe, u32 freq) 329{ 330 struct tda18271_priv *priv = fe->tuner_priv; 331 unsigned char *regs = priv->tda18271_regs; 332 u32 N; 333 334 /* set CAL mode to normal */ 335 regs[R_EP4] &= ~0x03; 336 tda18271_write_regs(fe, R_EP4, 1); 337 338 /* switch off agc1 */ 339 regs[R_EP3] |= 0x40; /* sm_lt = 1 */ 340 341 regs[R_EB18] |= 0x03; /* set agc1_gain to 15 dB */ 342 tda18271_write_regs(fe, R_EB18, 1); 343 344 /* frequency dependent parameters */ 345 346 tda18271_calc_bp_filter(fe, &freq); 347 tda18271_calc_gain_taper(fe, &freq); 348 tda18271_calc_rf_band(fe, &freq); 349 tda18271_calc_km(fe, &freq); 350 351 tda18271_write_regs(fe, R_EP1, 3); 352 tda18271_write_regs(fe, R_EB13, 1); 353 354 /* main pll charge pump source */ 355 tda18271_charge_pump_source(fe, TDA18271_MAIN_PLL, 1); 356 357 /* cal pll charge pump source */ 358 tda18271_charge_pump_source(fe, TDA18271_CAL_PLL, 1); 359 360 /* force dcdc converter to 0 V */ 361 regs[R_EB14] = 0x00; 362 tda18271_write_regs(fe, R_EB14, 1); 363 364 /* disable plls lock */ 365 regs[R_EB20] &= ~0x20; 366 tda18271_write_regs(fe, R_EB20, 1); 367 368 /* set CAL mode to RF tracking filter calibration */ 369 regs[R_EP4] |= 0x03; 370 tda18271_write_regs(fe, R_EP4, 2); 371 372 /* --------------------------------------------------------------- */ 373 374 /* set the internal calibration signal */ 375 N = freq; 376 377 tda18271_calc_cal_pll(fe, N); 378 tda18271_write_regs(fe, R_CPD, 4); 379 380 /* downconvert internal calibration */ 381 N += 1000000; 382 383 tda18271_calc_main_pll(fe, N); 384 tda18271_write_regs(fe, R_MPD, 4); 385 386 msleep(5); 387 388 tda18271_write_regs(fe, R_EP2, 1); 389 tda18271_write_regs(fe, R_EP1, 1); 390 tda18271_write_regs(fe, R_EP2, 1); 391 tda18271_write_regs(fe, R_EP1, 1); 392 393 /* --------------------------------------------------------------- */ 394 395 /* normal operation for the main pll */ 396 tda18271_charge_pump_source(fe, TDA18271_MAIN_PLL, 0); 397 398 /* normal operation for the cal pll */ 399 tda18271_charge_pump_source(fe, TDA18271_CAL_PLL, 0); 400 401 msleep(10); /* plls locking */ 402 403 /* launch the rf tracking filters calibration */ 404 regs[R_EB20] |= 0x20; 405 tda18271_write_regs(fe, R_EB20, 1); 406 407 msleep(60); /* calibration */ 408 409 /* --------------------------------------------------------------- */ 410 411 /* set CAL mode to normal */ 412 regs[R_EP4] &= ~0x03; 413 414 /* switch on agc1 */ 415 regs[R_EP3] &= ~0x40; /* sm_lt = 0 */ 416 417 regs[R_EB18] &= ~0x03; /* set agc1_gain to 6 dB */ 418 tda18271_write_regs(fe, R_EB18, 1); 419 420 tda18271_write_regs(fe, R_EP3, 2); 421 422 /* synchronization */ 423 tda18271_write_regs(fe, R_EP1, 1); 424 425 /* get calibration result */ 426 tda18271_read_extended(fe); 427 428 return regs[R_EB14]; 429} 430 431static int tda18271_powerscan(struct dvb_frontend *fe, 432 u32 *freq_in, u32 *freq_out) 433{ 434 struct tda18271_priv *priv = fe->tuner_priv; 435 unsigned char *regs = priv->tda18271_regs; 436 int sgn, bcal, count, wait, ret; 437 u8 cid_target; 438 u16 count_limit; 439 u32 freq; 440 441 freq = *freq_in; 442 443 tda18271_calc_rf_band(fe, &freq); 444 tda18271_calc_rf_cal(fe, &freq); 445 tda18271_calc_gain_taper(fe, &freq); 446 tda18271_lookup_cid_target(fe, &freq, &cid_target, &count_limit); 447 448 tda18271_write_regs(fe, R_EP2, 1); 449 tda18271_write_regs(fe, R_EB14, 1); 450 451 /* downconvert frequency */ 452 freq += 1000000; 453 454 tda18271_calc_main_pll(fe, freq); 455 tda18271_write_regs(fe, R_MPD, 4); 456 457 msleep(5); /* pll locking */ 458 459 /* detection mode */ 460 regs[R_EP4] &= ~0x03; 461 regs[R_EP4] |= 0x01; 462 tda18271_write_regs(fe, R_EP4, 1); 463 464 /* launch power detection measurement */ 465 tda18271_write_regs(fe, R_EP2, 1); 466 467 /* read power detection info, stored in EB10 */ 468 ret = tda18271_read_extended(fe); 469 if (tda_fail(ret)) 470 return ret; 471 472 /* algorithm initialization */ 473 sgn = 1; 474 *freq_out = *freq_in; 475 count = 0; 476 wait = false; 477 478 while ((regs[R_EB10] & 0x3f) < cid_target) { 479 /* downconvert updated freq to 1 MHz */ 480 freq = *freq_in + (sgn * count) + 1000000; 481 482 tda18271_calc_main_pll(fe, freq); 483 tda18271_write_regs(fe, R_MPD, 4); 484 485 if (wait) { 486 msleep(5); /* pll locking */ 487 wait = false; 488 } else 489 udelay(100); /* pll locking */ 490 491 /* launch power detection measurement */ 492 tda18271_write_regs(fe, R_EP2, 1); 493 494 /* read power detection info, stored in EB10 */ 495 ret = tda18271_read_extended(fe); 496 if (tda_fail(ret)) 497 return ret; 498 499 count += 200; 500 501 if (count <= count_limit) 502 continue; 503 504 if (sgn <= 0) 505 break; 506 507 sgn = -1 * sgn; 508 count = 200; 509 wait = true; 510 } 511 512 if ((regs[R_EB10] & 0x3f) >= cid_target) { 513 bcal = 1; 514 *freq_out = freq - 1000000; 515 } else 516 bcal = 0; 517 518 tda_cal("bcal = %d, freq_in = %d, freq_out = %d (freq = %d)\n", 519 bcal, *freq_in, *freq_out, freq); 520 521 return bcal; 522} 523 524static int tda18271_powerscan_init(struct dvb_frontend *fe) 525{ 526 struct tda18271_priv *priv = fe->tuner_priv; 527 unsigned char *regs = priv->tda18271_regs; 528 int ret; 529 530 /* set standard to digital */ 531 regs[R_EP3] &= ~0x1f; /* clear std bits */ 532 regs[R_EP3] |= 0x12; 533 534 /* set cal mode to normal */ 535 regs[R_EP4] &= ~0x03; 536 537 /* update IF output level */ 538 regs[R_EP4] &= ~0x1c; /* clear if level bits */ 539 540 ret = tda18271_write_regs(fe, R_EP3, 2); 541 if (tda_fail(ret)) 542 goto fail; 543 544 regs[R_EB18] &= ~0x03; /* set agc1_gain to 6 dB */ 545 ret = tda18271_write_regs(fe, R_EB18, 1); 546 if (tda_fail(ret)) 547 goto fail; 548 549 regs[R_EB21] &= ~0x03; /* set agc2_gain to -15 dB */ 550 551 /* 1.5 MHz low pass filter */ 552 regs[R_EB23] |= 0x04; /* forcelp_fc2_en = 1 */ 553 regs[R_EB23] |= 0x02; /* lp_fc[2] = 1 */ 554 555 ret = tda18271_write_regs(fe, R_EB21, 3); 556fail: 557 return ret; 558} 559 560static int tda18271_rf_tracking_filters_init(struct dvb_frontend *fe, u32 freq) 561{ 562 struct tda18271_priv *priv = fe->tuner_priv; 563 struct tda18271_rf_tracking_filter_cal *map = priv->rf_cal_state; 564 unsigned char *regs = priv->tda18271_regs; 565 int bcal, rf, i; 566 s32 divisor, dividend; 567#define RF1 0 568#define RF2 1 569#define RF3 2 570 u32 rf_default[3]; 571 u32 rf_freq[3]; 572 s32 prog_cal[3]; 573 s32 prog_tab[3]; 574 575 i = tda18271_lookup_rf_band(fe, &freq, NULL); 576 577 if (tda_fail(i)) 578 return i; 579 580 rf_default[RF1] = 1000 * map[i].rf1_def; 581 rf_default[RF2] = 1000 * map[i].rf2_def; 582 rf_default[RF3] = 1000 * map[i].rf3_def; 583 584 for (rf = RF1; rf <= RF3; rf++) { 585 if (0 == rf_default[rf]) 586 return 0; 587 tda_cal("freq = %d, rf = %d\n", freq, rf); 588 589 /* look for optimized calibration frequency */ 590 bcal = tda18271_powerscan(fe, &rf_default[rf], &rf_freq[rf]); 591 if (tda_fail(bcal)) 592 return bcal; 593 594 tda18271_calc_rf_cal(fe, &rf_freq[rf]); 595 prog_tab[rf] = (s32)regs[R_EB14]; 596 597 if (1 == bcal) 598 prog_cal[rf] = 599 (s32)tda18271_calibrate_rf(fe, rf_freq[rf]); 600 else 601 prog_cal[rf] = prog_tab[rf]; 602 603 switch (rf) { 604 case RF1: 605 map[i].rf_a1 = 0; 606 map[i].rf_b1 = (prog_cal[RF1] - prog_tab[RF1]); 607 map[i].rf1 = rf_freq[RF1] / 1000; 608 break; 609 case RF2: 610 dividend = (prog_cal[RF2] - prog_tab[RF2] - 611 prog_cal[RF1] + prog_tab[RF1]); 612 divisor = (s32)(rf_freq[RF2] - rf_freq[RF1]) / 1000; 613 map[i].rf_a1 = (dividend / divisor); 614 map[i].rf2 = rf_freq[RF2] / 1000; 615 break; 616 case RF3: 617 dividend = (prog_cal[RF3] - prog_tab[RF3] - 618 prog_cal[RF2] + prog_tab[RF2]); 619 divisor = (s32)(rf_freq[RF3] - rf_freq[RF2]) / 1000; 620 map[i].rf_a2 = (dividend / divisor); 621 map[i].rf_b2 = (prog_cal[RF2] - prog_tab[RF2]); 622 map[i].rf3 = rf_freq[RF3] / 1000; 623 break; 624 default: 625 BUG(); 626 } 627 } 628 629 return 0; 630} 631 632static int tda18271_calc_rf_filter_curve(struct dvb_frontend *fe) 633{ 634 struct tda18271_priv *priv = fe->tuner_priv; 635 unsigned int i; 636 int ret; 637 638 tda_info("performing RF tracking filter calibration\n"); 639 640 /* wait for die temperature stabilization */ 641 msleep(200); 642 643 ret = tda18271_powerscan_init(fe); 644 if (tda_fail(ret)) 645 goto fail; 646 647 /* rf band calibration */ 648 for (i = 0; priv->rf_cal_state[i].rfmax != 0; i++) { 649 ret = 650 tda18271_rf_tracking_filters_init(fe, 1000 * 651 priv->rf_cal_state[i].rfmax); 652 if (tda_fail(ret)) 653 goto fail; 654 } 655 656 priv->tm_rfcal = tda18271_read_thermometer(fe); 657fail: 658 return ret; 659} 660 661/* ------------------------------------------------------------------ */ 662 663static int tda18271c2_rf_cal_init(struct dvb_frontend *fe) 664{ 665 struct tda18271_priv *priv = fe->tuner_priv; 666 unsigned char *regs = priv->tda18271_regs; 667 int ret; 668 669 /* test RF_CAL_OK to see if we need init */ 670 if ((regs[R_EP1] & 0x10) == 0) 671 priv->cal_initialized = false; 672 673 if (priv->cal_initialized) 674 return 0; 675 676 ret = tda18271_calc_rf_filter_curve(fe); 677 if (tda_fail(ret)) 678 goto fail; 679 680 ret = tda18271_por(fe); 681 if (tda_fail(ret)) 682 goto fail; 683 684 tda_info("RF tracking filter calibration complete\n"); 685 686 priv->cal_initialized = true; 687 goto end; 688fail: 689 tda_info("RF tracking filter calibration failed!\n"); 690end: 691 return ret; 692} 693 694static int tda18271c1_rf_tracking_filter_calibration(struct dvb_frontend *fe, 695 u32 freq, u32 bw) 696{ 697 struct tda18271_priv *priv = fe->tuner_priv; 698 unsigned char *regs = priv->tda18271_regs; 699 int ret; 700 u32 N = 0; 701 702 /* calculate bp filter */ 703 tda18271_calc_bp_filter(fe, &freq); 704 tda18271_write_regs(fe, R_EP1, 1); 705 706 regs[R_EB4] &= 0x07; 707 regs[R_EB4] |= 0x60; 708 tda18271_write_regs(fe, R_EB4, 1); 709 710 regs[R_EB7] = 0x60; 711 tda18271_write_regs(fe, R_EB7, 1); 712 713 regs[R_EB14] = 0x00; 714 tda18271_write_regs(fe, R_EB14, 1); 715 716 regs[R_EB20] = 0xcc; 717 tda18271_write_regs(fe, R_EB20, 1); 718 719 /* set cal mode to RF tracking filter calibration */ 720 regs[R_EP4] |= 0x03; 721 722 /* calculate cal pll */ 723 724 switch (priv->mode) { 725 case TDA18271_ANALOG: 726 N = freq - 1250000; 727 break; 728 case TDA18271_DIGITAL: 729 N = freq + bw / 2; 730 break; 731 } 732 733 tda18271_calc_cal_pll(fe, N); 734 735 /* calculate main pll */ 736 737 switch (priv->mode) { 738 case TDA18271_ANALOG: 739 N = freq - 250000; 740 break; 741 case TDA18271_DIGITAL: 742 N = freq + bw / 2 + 1000000; 743 break; 744 } 745 746 tda18271_calc_main_pll(fe, N); 747 748 ret = tda18271_write_regs(fe, R_EP3, 11); 749 if (tda_fail(ret)) 750 return ret; 751 752 msleep(5); /* RF tracking filter calibration initialization */ 753 754 /* search for K,M,CO for RF calibration */ 755 tda18271_calc_km(fe, &freq); 756 tda18271_write_regs(fe, R_EB13, 1); 757 758 /* search for rf band */ 759 tda18271_calc_rf_band(fe, &freq); 760 761 /* search for gain taper */ 762 tda18271_calc_gain_taper(fe, &freq); 763 764 tda18271_write_regs(fe, R_EP2, 1); 765 tda18271_write_regs(fe, R_EP1, 1); 766 tda18271_write_regs(fe, R_EP2, 1); 767 tda18271_write_regs(fe, R_EP1, 1); 768 769 regs[R_EB4] &= 0x07; 770 regs[R_EB4] |= 0x40; 771 tda18271_write_regs(fe, R_EB4, 1); 772 773 regs[R_EB7] = 0x40; 774 tda18271_write_regs(fe, R_EB7, 1); 775 msleep(10); /* pll locking */ 776 777 regs[R_EB20] = 0xec; 778 tda18271_write_regs(fe, R_EB20, 1); 779 msleep(60); /* RF tracking filter calibration completion */ 780 781 regs[R_EP4] &= ~0x03; /* set cal mode to normal */ 782 tda18271_write_regs(fe, R_EP4, 1); 783 784 tda18271_write_regs(fe, R_EP1, 1); 785 786 /* RF tracking filter correction for VHF_Low band */ 787 if (0 == tda18271_calc_rf_cal(fe, &freq)) 788 tda18271_write_regs(fe, R_EB14, 1); 789 790 return 0; 791} 792 793/* ------------------------------------------------------------------ */ 794 795static int tda18271_ir_cal_init(struct dvb_frontend *fe) 796{ 797 struct tda18271_priv *priv = fe->tuner_priv; 798 unsigned char *regs = priv->tda18271_regs; 799 int ret; 800 801 ret = tda18271_read_regs(fe); 802 if (tda_fail(ret)) 803 goto fail; 804 805 /* test IR_CAL_OK to see if we need init */ 806 if ((regs[R_EP1] & 0x08) == 0) 807 ret = tda18271_init_regs(fe); 808fail: 809 return ret; 810} 811 812static int tda18271_init(struct dvb_frontend *fe) 813{ 814 struct tda18271_priv *priv = fe->tuner_priv; 815 int ret; 816 817 mutex_lock(&priv->lock); 818 819 /* full power up */ 820 ret = tda18271_set_standby_mode(fe, 0, 0, 0); 821 if (tda_fail(ret)) 822 goto fail; 823 824 /* initialization */ 825 ret = tda18271_ir_cal_init(fe); 826 if (tda_fail(ret)) 827 goto fail; 828 829 if (priv->id == TDA18271HDC2) 830 tda18271c2_rf_cal_init(fe); 831fail: 832 mutex_unlock(&priv->lock); 833 834 return ret; 835} 836 837static int tda18271_sleep(struct dvb_frontend *fe) 838{ 839 struct tda18271_priv *priv = fe->tuner_priv; 840 int ret; 841 842 mutex_lock(&priv->lock); 843 844 /* enter standby mode, with required output features enabled */ 845 ret = tda18271_toggle_output(fe, 1); 846 847 mutex_unlock(&priv->lock); 848 849 return ret; 850} 851 852/* ------------------------------------------------------------------ */ 853 854static int tda18271_agc(struct dvb_frontend *fe) 855{ 856 struct tda18271_priv *priv = fe->tuner_priv; 857 int ret = 0; 858 859 switch (priv->config) { 860 case TDA8290_LNA_OFF: 861 /* no external agc configuration required */ 862 if (tda18271_debug & DBG_ADV) 863 tda_dbg("no agc configuration provided\n"); 864 break; 865 case TDA8290_LNA_ON_BRIDGE: 866 /* switch with GPIO of saa713x */ 867 tda_dbg("invoking callback\n"); 868 if (fe->callback) 869 ret = fe->callback(priv->i2c_props.adap->algo_data, 870 DVB_FRONTEND_COMPONENT_TUNER, 871 TDA18271_CALLBACK_CMD_AGC_ENABLE, 872 priv->mode); 873 break; 874 case TDA8290_LNA_GP0_HIGH_ON: 875 case TDA8290_LNA_GP0_HIGH_OFF: 876 default: 877 /* n/a - currently not supported */ 878 tda_err("unsupported configuration: %d\n", priv->config); 879 ret = -EINVAL; 880 break; 881 } 882 return ret; 883} 884 885static int tda18271_tune(struct dvb_frontend *fe, 886 struct tda18271_std_map_item *map, u32 freq, u32 bw) 887{ 888 struct tda18271_priv *priv = fe->tuner_priv; 889 int ret; 890 891 tda_dbg("freq = %d, ifc = %d, bw = %d, agc_mode = %d, std = %d\n", 892 freq, map->if_freq, bw, map->agc_mode, map->std); 893 894 ret = tda18271_agc(fe); 895 if (tda_fail(ret)) 896 tda_warn("failed to configure agc\n"); 897 898 ret = tda18271_init(fe); 899 if (tda_fail(ret)) 900 goto fail; 901 902 mutex_lock(&priv->lock); 903 904 switch (priv->id) { 905 case TDA18271HDC1: 906 tda18271c1_rf_tracking_filter_calibration(fe, freq, bw); 907 break; 908 case TDA18271HDC2: 909 tda18271c2_rf_tracking_filters_correction(fe, freq); 910 break; 911 } 912 ret = tda18271_channel_configuration(fe, map, freq, bw); 913 914 mutex_unlock(&priv->lock); 915fail: 916 return ret; 917} 918 919/* ------------------------------------------------------------------ */ 920 921static int tda18271_set_params(struct dvb_frontend *fe) 922{ 923 struct dtv_frontend_properties *c = &fe->dtv_property_cache; 924 u32 delsys = c->delivery_system; 925 u32 bw = c->bandwidth_hz; 926 u32 freq = c->frequency; 927 struct tda18271_priv *priv = fe->tuner_priv; 928 struct tda18271_std_map *std_map = &priv->std; 929 struct tda18271_std_map_item *map; 930 int ret; 931 932 priv->mode = TDA18271_DIGITAL; 933 934 switch (delsys) { 935 case SYS_ATSC: 936 map = &std_map->atsc_6; 937 bw = 6000000; 938 break; 939 case SYS_ISDBT: 940 case SYS_DVBT: 941 case SYS_DVBT2: 942 if (bw <= 6000000) { 943 map = &std_map->dvbt_6; 944 } else if (bw <= 7000000) { 945 map = &std_map->dvbt_7; 946 } else { 947 map = &std_map->dvbt_8; 948 } 949 break; 950 case SYS_DVBC_ANNEX_B: 951 bw = 6000000; 952 fallthrough; 953 case SYS_DVBC_ANNEX_A: 954 case SYS_DVBC_ANNEX_C: 955 if (bw <= 6000000) { 956 map = &std_map->qam_6; 957 } else if (bw <= 7000000) { 958 map = &std_map->qam_7; 959 } else { 960 map = &std_map->qam_8; 961 } 962 break; 963 default: 964 tda_warn("modulation type not supported!\n"); 965 return -EINVAL; 966 } 967 968 /* When tuning digital, the analog demod must be tri-stated */ 969 if (fe->ops.analog_ops.standby) 970 fe->ops.analog_ops.standby(fe); 971 972 ret = tda18271_tune(fe, map, freq, bw); 973 974 if (tda_fail(ret)) 975 goto fail; 976 977 priv->if_freq = map->if_freq; 978 priv->frequency = freq; 979 priv->bandwidth = bw; 980fail: 981 return ret; 982} 983 984static int tda18271_set_analog_params(struct dvb_frontend *fe, 985 struct analog_parameters *params) 986{ 987 struct tda18271_priv *priv = fe->tuner_priv; 988 struct tda18271_std_map *std_map = &priv->std; 989 struct tda18271_std_map_item *map; 990 char *mode; 991 int ret; 992 u32 freq = params->frequency * 125 * 993 ((params->mode == V4L2_TUNER_RADIO) ? 1 : 1000) / 2; 994 995 priv->mode = TDA18271_ANALOG; 996 997 if (params->mode == V4L2_TUNER_RADIO) { 998 map = &std_map->fm_radio; 999 mode = "fm"; 1000 } else if (params->std & V4L2_STD_MN) { 1001 map = &std_map->atv_mn; 1002 mode = "MN"; 1003 } else if (params->std & V4L2_STD_B) { 1004 map = &std_map->atv_b; 1005 mode = "B"; 1006 } else if (params->std & V4L2_STD_GH) { 1007 map = &std_map->atv_gh; 1008 mode = "GH"; 1009 } else if (params->std & V4L2_STD_PAL_I) { 1010 map = &std_map->atv_i; 1011 mode = "I"; 1012 } else if (params->std & V4L2_STD_DK) { 1013 map = &std_map->atv_dk; 1014 mode = "DK"; 1015 } else if (params->std & V4L2_STD_SECAM_L) { 1016 map = &std_map->atv_l; 1017 mode = "L"; 1018 } else if (params->std & V4L2_STD_SECAM_LC) { 1019 map = &std_map->atv_lc; 1020 mode = "L'"; 1021 } else { 1022 map = &std_map->atv_i; 1023 mode = "xx"; 1024 } 1025 1026 tda_dbg("setting tda18271 to system %s\n", mode); 1027 1028 ret = tda18271_tune(fe, map, freq, 0); 1029 1030 if (tda_fail(ret)) 1031 goto fail; 1032 1033 priv->if_freq = map->if_freq; 1034 priv->frequency = freq; 1035 priv->bandwidth = 0; 1036fail: 1037 return ret; 1038} 1039 1040static void tda18271_release(struct dvb_frontend *fe) 1041{ 1042 struct tda18271_priv *priv = fe->tuner_priv; 1043 1044 mutex_lock(&tda18271_list_mutex); 1045 1046 if (priv) 1047 hybrid_tuner_release_state(priv); 1048 1049 mutex_unlock(&tda18271_list_mutex); 1050 1051 fe->tuner_priv = NULL; 1052} 1053 1054static int tda18271_get_frequency(struct dvb_frontend *fe, u32 *frequency) 1055{ 1056 struct tda18271_priv *priv = fe->tuner_priv; 1057 *frequency = priv->frequency; 1058 return 0; 1059} 1060 1061static int tda18271_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth) 1062{ 1063 struct tda18271_priv *priv = fe->tuner_priv; 1064 *bandwidth = priv->bandwidth; 1065 return 0; 1066} 1067 1068static int tda18271_get_if_frequency(struct dvb_frontend *fe, u32 *frequency) 1069{ 1070 struct tda18271_priv *priv = fe->tuner_priv; 1071 *frequency = (u32)priv->if_freq * 1000; 1072 return 0; 1073} 1074 1075/* ------------------------------------------------------------------ */ 1076 1077#define tda18271_update_std(std_cfg, name) do { \ 1078 if (map->std_cfg.if_freq + \ 1079 map->std_cfg.agc_mode + map->std_cfg.std + \ 1080 map->std_cfg.if_lvl + map->std_cfg.rfagc_top > 0) { \ 1081 tda_dbg("Using custom std config for %s\n", name); \ 1082 memcpy(&std->std_cfg, &map->std_cfg, \ 1083 sizeof(struct tda18271_std_map_item)); \ 1084 } } while (0) 1085 1086#define tda18271_dump_std_item(std_cfg, name) do { \ 1087 tda_dbg("(%s) if_freq = %d, agc_mode = %d, std = %d, " \ 1088 "if_lvl = %d, rfagc_top = 0x%02x\n", \ 1089 name, std->std_cfg.if_freq, \ 1090 std->std_cfg.agc_mode, std->std_cfg.std, \ 1091 std->std_cfg.if_lvl, std->std_cfg.rfagc_top); \ 1092 } while (0) 1093 1094static int tda18271_dump_std_map(struct dvb_frontend *fe) 1095{ 1096 struct tda18271_priv *priv = fe->tuner_priv; 1097 struct tda18271_std_map *std = &priv->std; 1098 1099 tda_dbg("========== STANDARD MAP SETTINGS ==========\n"); 1100 tda18271_dump_std_item(fm_radio, " fm "); 1101 tda18271_dump_std_item(atv_b, "atv b "); 1102 tda18271_dump_std_item(atv_dk, "atv dk"); 1103 tda18271_dump_std_item(atv_gh, "atv gh"); 1104 tda18271_dump_std_item(atv_i, "atv i "); 1105 tda18271_dump_std_item(atv_l, "atv l "); 1106 tda18271_dump_std_item(atv_lc, "atv l'"); 1107 tda18271_dump_std_item(atv_mn, "atv mn"); 1108 tda18271_dump_std_item(atsc_6, "atsc 6"); 1109 tda18271_dump_std_item(dvbt_6, "dvbt 6"); 1110 tda18271_dump_std_item(dvbt_7, "dvbt 7"); 1111 tda18271_dump_std_item(dvbt_8, "dvbt 8"); 1112 tda18271_dump_std_item(qam_6, "qam 6 "); 1113 tda18271_dump_std_item(qam_7, "qam 7 "); 1114 tda18271_dump_std_item(qam_8, "qam 8 "); 1115 1116 return 0; 1117} 1118 1119static int tda18271_update_std_map(struct dvb_frontend *fe, 1120 struct tda18271_std_map *map) 1121{ 1122 struct tda18271_priv *priv = fe->tuner_priv; 1123 struct tda18271_std_map *std = &priv->std; 1124 1125 if (!map) 1126 return -EINVAL; 1127 1128 tda18271_update_std(fm_radio, "fm"); 1129 tda18271_update_std(atv_b, "atv b"); 1130 tda18271_update_std(atv_dk, "atv dk"); 1131 tda18271_update_std(atv_gh, "atv gh"); 1132 tda18271_update_std(atv_i, "atv i"); 1133 tda18271_update_std(atv_l, "atv l"); 1134 tda18271_update_std(atv_lc, "atv l'"); 1135 tda18271_update_std(atv_mn, "atv mn"); 1136 tda18271_update_std(atsc_6, "atsc 6"); 1137 tda18271_update_std(dvbt_6, "dvbt 6"); 1138 tda18271_update_std(dvbt_7, "dvbt 7"); 1139 tda18271_update_std(dvbt_8, "dvbt 8"); 1140 tda18271_update_std(qam_6, "qam 6"); 1141 tda18271_update_std(qam_7, "qam 7"); 1142 tda18271_update_std(qam_8, "qam 8"); 1143 1144 return 0; 1145} 1146 1147static int tda18271_get_id(struct dvb_frontend *fe) 1148{ 1149 struct tda18271_priv *priv = fe->tuner_priv; 1150 unsigned char *regs = priv->tda18271_regs; 1151 char *name; 1152 int ret; 1153 1154 mutex_lock(&priv->lock); 1155 ret = tda18271_read_regs(fe); 1156 mutex_unlock(&priv->lock); 1157 1158 if (ret) { 1159 tda_info("Error reading device ID @ %d-%04x, bailing out.\n", 1160 i2c_adapter_id(priv->i2c_props.adap), 1161 priv->i2c_props.addr); 1162 return -EIO; 1163 } 1164 1165 switch (regs[R_ID] & 0x7f) { 1166 case 3: 1167 name = "TDA18271HD/C1"; 1168 priv->id = TDA18271HDC1; 1169 break; 1170 case 4: 1171 name = "TDA18271HD/C2"; 1172 priv->id = TDA18271HDC2; 1173 break; 1174 default: 1175 tda_info("Unknown device (%i) detected @ %d-%04x, device not supported.\n", 1176 regs[R_ID], i2c_adapter_id(priv->i2c_props.adap), 1177 priv->i2c_props.addr); 1178 return -EINVAL; 1179 } 1180 1181 tda_info("%s detected @ %d-%04x\n", name, 1182 i2c_adapter_id(priv->i2c_props.adap), priv->i2c_props.addr); 1183 1184 return 0; 1185} 1186 1187static int tda18271_setup_configuration(struct dvb_frontend *fe, 1188 struct tda18271_config *cfg) 1189{ 1190 struct tda18271_priv *priv = fe->tuner_priv; 1191 1192 priv->gate = (cfg) ? cfg->gate : TDA18271_GATE_AUTO; 1193 priv->role = (cfg) ? cfg->role : TDA18271_MASTER; 1194 priv->config = (cfg) ? cfg->config : 0; 1195 priv->small_i2c = (cfg) ? 1196 cfg->small_i2c : TDA18271_39_BYTE_CHUNK_INIT; 1197 priv->output_opt = (cfg) ? 1198 cfg->output_opt : TDA18271_OUTPUT_LT_XT_ON; 1199 1200 return 0; 1201} 1202 1203static inline int tda18271_need_cal_on_startup(struct tda18271_config *cfg) 1204{ 1205 /* tda18271_cal_on_startup == -1 when cal module option is unset */ 1206 return ((tda18271_cal_on_startup == -1) ? 1207 /* honor configuration setting */ 1208 ((cfg) && (cfg->rf_cal_on_startup)) : 1209 /* module option overrides configuration setting */ 1210 (tda18271_cal_on_startup)) ? 1 : 0; 1211} 1212 1213static int tda18271_set_config(struct dvb_frontend *fe, void *priv_cfg) 1214{ 1215 struct tda18271_config *cfg = (struct tda18271_config *) priv_cfg; 1216 1217 tda18271_setup_configuration(fe, cfg); 1218 1219 if (tda18271_need_cal_on_startup(cfg)) 1220 tda18271_init(fe); 1221 1222 /* override default std map with values in config struct */ 1223 if ((cfg) && (cfg->std_map)) 1224 tda18271_update_std_map(fe, cfg->std_map); 1225 1226 return 0; 1227} 1228 1229static const struct dvb_tuner_ops tda18271_tuner_ops = { 1230 .info = { 1231 .name = "NXP TDA18271HD", 1232 .frequency_min_hz = 45 * MHz, 1233 .frequency_max_hz = 864 * MHz, 1234 .frequency_step_hz = 62500 1235 }, 1236 .init = tda18271_init, 1237 .sleep = tda18271_sleep, 1238 .set_params = tda18271_set_params, 1239 .set_analog_params = tda18271_set_analog_params, 1240 .release = tda18271_release, 1241 .set_config = tda18271_set_config, 1242 .get_frequency = tda18271_get_frequency, 1243 .get_bandwidth = tda18271_get_bandwidth, 1244 .get_if_frequency = tda18271_get_if_frequency, 1245}; 1246 1247struct dvb_frontend *tda18271_attach(struct dvb_frontend *fe, u8 addr, 1248 struct i2c_adapter *i2c, 1249 struct tda18271_config *cfg) 1250{ 1251 struct tda18271_priv *priv = NULL; 1252 int instance, ret; 1253 1254 mutex_lock(&tda18271_list_mutex); 1255 1256 instance = hybrid_tuner_request_state(struct tda18271_priv, priv, 1257 hybrid_tuner_instance_list, 1258 i2c, addr, "tda18271"); 1259 switch (instance) { 1260 case 0: 1261 goto fail; 1262 case 1: 1263 /* new tuner instance */ 1264 fe->tuner_priv = priv; 1265 1266 tda18271_setup_configuration(fe, cfg); 1267 1268 priv->cal_initialized = false; 1269 mutex_init(&priv->lock); 1270 1271 ret = tda18271_get_id(fe); 1272 if (tda_fail(ret)) 1273 goto fail; 1274 1275 ret = tda18271_assign_map_layout(fe); 1276 if (tda_fail(ret)) 1277 goto fail; 1278 1279 /* if delay_cal is set, delay IR & RF calibration until init() 1280 * module option 'cal' overrides this delay */ 1281 if ((cfg->delay_cal) && (!tda18271_need_cal_on_startup(cfg))) 1282 break; 1283 1284 mutex_lock(&priv->lock); 1285 tda18271_init_regs(fe); 1286 1287 if ((tda18271_need_cal_on_startup(cfg)) && 1288 (priv->id == TDA18271HDC2)) 1289 tda18271c2_rf_cal_init(fe); 1290 1291 /* enter standby mode, with required output features enabled */ 1292 ret = tda18271_toggle_output(fe, 1); 1293 tda_fail(ret); 1294 1295 mutex_unlock(&priv->lock); 1296 break; 1297 default: 1298 /* existing tuner instance */ 1299 fe->tuner_priv = priv; 1300 1301 /* allow dvb driver to override configuration settings */ 1302 if (cfg) { 1303 if (cfg->gate != TDA18271_GATE_ANALOG) 1304 priv->gate = cfg->gate; 1305 if (cfg->role) 1306 priv->role = cfg->role; 1307 if (cfg->config) 1308 priv->config = cfg->config; 1309 if (cfg->small_i2c) 1310 priv->small_i2c = cfg->small_i2c; 1311 if (cfg->output_opt) 1312 priv->output_opt = cfg->output_opt; 1313 if (cfg->std_map) 1314 tda18271_update_std_map(fe, cfg->std_map); 1315 } 1316 if (tda18271_need_cal_on_startup(cfg)) 1317 tda18271_init(fe); 1318 break; 1319 } 1320 1321 /* override default std map with values in config struct */ 1322 if ((cfg) && (cfg->std_map)) 1323 tda18271_update_std_map(fe, cfg->std_map); 1324 1325 mutex_unlock(&tda18271_list_mutex); 1326 1327 memcpy(&fe->ops.tuner_ops, &tda18271_tuner_ops, 1328 sizeof(struct dvb_tuner_ops)); 1329 1330 if (tda18271_debug & (DBG_MAP | DBG_ADV)) 1331 tda18271_dump_std_map(fe); 1332 1333 return fe; 1334fail: 1335 mutex_unlock(&tda18271_list_mutex); 1336 1337 tda18271_release(fe); 1338 return NULL; 1339} 1340EXPORT_SYMBOL_GPL(tda18271_attach); 1341MODULE_DESCRIPTION("NXP TDA18271HD analog / digital tuner driver"); 1342MODULE_AUTHOR("Michael Krufky <mkrufky@linuxtv.org>"); 1343MODULE_LICENSE("GPL"); 1344MODULE_VERSION("0.4");
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