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