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 bcal = 0; 474 count = 0; 475 wait = false; 476 477 while ((regs[R_EB10] & 0x3f) < cid_target) { 478 /* downconvert updated freq to 1 MHz */ 479 freq = *freq_in + (sgn * count) + 1000000; 480 481 tda18271_calc_main_pll(fe, freq); 482 tda18271_write_regs(fe, R_MPD, 4); 483 484 if (wait) { 485 msleep(5); /* pll locking */ 486 wait = false; 487 } else 488 udelay(100); /* pll locking */ 489 490 /* launch power detection measurement */ 491 tda18271_write_regs(fe, R_EP2, 1); 492 493 /* read power detection info, stored in EB10 */ 494 ret = tda18271_read_extended(fe); 495 if (tda_fail(ret)) 496 return ret; 497 498 count += 200; 499 500 if (count <= count_limit) 501 continue; 502 503 if (sgn <= 0) 504 break; 505 506 sgn = -1 * sgn; 507 count = 200; 508 wait = true; 509 } 510 511 if ((regs[R_EB10] & 0x3f) >= cid_target) { 512 bcal = 1; 513 *freq_out = freq - 1000000; 514 } else 515 bcal = 0; 516 517 tda_cal("bcal = %d, freq_in = %d, freq_out = %d (freq = %d)\n", 518 bcal, *freq_in, *freq_out, freq); 519 520 return bcal; 521 } 522 523 static int tda18271_powerscan_init(struct dvb_frontend *fe) 524 { 525 struct tda18271_priv *priv = fe->tuner_priv; 526 unsigned char *regs = priv->tda18271_regs; 527 int ret; 528 529 /* set standard to digital */ 530 regs[R_EP3] &= ~0x1f; /* clear std bits */ 531 regs[R_EP3] |= 0x12; 532 533 /* set cal mode to normal */ 534 regs[R_EP4] &= ~0x03; 535 536 /* update IF output level */ 537 regs[R_EP4] &= ~0x1c; /* clear if level bits */ 538 539 ret = tda18271_write_regs(fe, R_EP3, 2); 540 if (tda_fail(ret)) 541 goto fail; 542 543 regs[R_EB18] &= ~0x03; /* set agc1_gain to 6 dB */ 544 ret = tda18271_write_regs(fe, R_EB18, 1); 545 if (tda_fail(ret)) 546 goto fail; 547 548 regs[R_EB21] &= ~0x03; /* set agc2_gain to -15 dB */ 549 550 /* 1.5 MHz low pass filter */ 551 regs[R_EB23] |= 0x04; /* forcelp_fc2_en = 1 */ 552 regs[R_EB23] |= 0x02; /* lp_fc[2] = 1 */ 553 554 ret = tda18271_write_regs(fe, R_EB21, 3); 555 fail: 556 return ret; 557 } 558 559 static int tda18271_rf_tracking_filters_init(struct dvb_frontend *fe, u32 freq) 560 { 561 struct tda18271_priv *priv = fe->tuner_priv; 562 struct tda18271_rf_tracking_filter_cal *map = priv->rf_cal_state; 563 unsigned char *regs = priv->tda18271_regs; 564 int bcal, rf, i; 565 s32 divisor, dividend; 566 #define RF1 0 567 #define RF2 1 568 #define RF3 2 569 u32 rf_default[3]; 570 u32 rf_freq[3]; 571 s32 prog_cal[3]; 572 s32 prog_tab[3]; 573 574 i = tda18271_lookup_rf_band(fe, &freq, NULL); 575 576 if (tda_fail(i)) 577 return i; 578 579 rf_default[RF1] = 1000 * map[i].rf1_def; 580 rf_default[RF2] = 1000 * map[i].rf2_def; 581 rf_default[RF3] = 1000 * map[i].rf3_def; 582 583 for (rf = RF1; rf <= RF3; rf++) { 584 if (0 == rf_default[rf]) 585 return 0; 586 tda_cal("freq = %d, rf = %d\n", freq, rf); 587 588 /* look for optimized calibration frequency */ 589 bcal = tda18271_powerscan(fe, &rf_default[rf], &rf_freq[rf]); 590 if (tda_fail(bcal)) 591 return bcal; 592 593 tda18271_calc_rf_cal(fe, &rf_freq[rf]); 594 prog_tab[rf] = (s32)regs[R_EB14]; 595 596 if (1 == bcal) 597 prog_cal[rf] = 598 (s32)tda18271_calibrate_rf(fe, rf_freq[rf]); 599 else 600 prog_cal[rf] = prog_tab[rf]; 601 602 switch (rf) { 603 case RF1: 604 map[i].rf_a1 = 0; 605 map[i].rf_b1 = (prog_cal[RF1] - prog_tab[RF1]); 606 map[i].rf1 = rf_freq[RF1] / 1000; 607 break; 608 case RF2: 609 dividend = (prog_cal[RF2] - prog_tab[RF2] - 610 prog_cal[RF1] + prog_tab[RF1]); 611 divisor = (s32)(rf_freq[RF2] - rf_freq[RF1]) / 1000; 612 map[i].rf_a1 = (dividend / divisor); 613 map[i].rf2 = rf_freq[RF2] / 1000; 614 break; 615 case RF3: 616 dividend = (prog_cal[RF3] - prog_tab[RF3] - 617 prog_cal[RF2] + prog_tab[RF2]); 618 divisor = (s32)(rf_freq[RF3] - rf_freq[RF2]) / 1000; 619 map[i].rf_a2 = (dividend / divisor); 620 map[i].rf_b2 = (prog_cal[RF2] - prog_tab[RF2]); 621 map[i].rf3 = rf_freq[RF3] / 1000; 622 break; 623 default: 624 BUG(); 625 } 626 } 627 628 return 0; 629 } 630 631 static int tda18271_calc_rf_filter_curve(struct dvb_frontend *fe) 632 { 633 struct tda18271_priv *priv = fe->tuner_priv; 634 unsigned int i; 635 int ret; 636 637 tda_info("performing RF tracking filter calibration\n"); 638 639 /* wait for die temperature stabilization */ 640 msleep(200); 641 642 ret = tda18271_powerscan_init(fe); 643 if (tda_fail(ret)) 644 goto fail; 645 646 /* rf band calibration */ 647 for (i = 0; priv->rf_cal_state[i].rfmax != 0; i++) { 648 ret = 649 tda18271_rf_tracking_filters_init(fe, 1000 * 650 priv->rf_cal_state[i].rfmax); 651 if (tda_fail(ret)) 652 goto fail; 653 } 654 655 priv->tm_rfcal = tda18271_read_thermometer(fe); 656 fail: 657 return ret; 658 } 659 660 /* ------------------------------------------------------------------ */ 661 662 static int tda18271c2_rf_cal_init(struct dvb_frontend *fe) 663 { 664 struct tda18271_priv *priv = fe->tuner_priv; 665 unsigned char *regs = priv->tda18271_regs; 666 int ret; 667 668 /* test RF_CAL_OK to see if we need init */ 669 if ((regs[R_EP1] & 0x10) == 0) 670 priv->cal_initialized = false; 671 672 if (priv->cal_initialized) 673 return 0; 674 675 ret = tda18271_calc_rf_filter_curve(fe); 676 if (tda_fail(ret)) 677 goto fail; 678 679 ret = tda18271_por(fe); 680 if (tda_fail(ret)) 681 goto fail; 682 683 tda_info("RF tracking filter calibration complete\n"); 684 685 priv->cal_initialized = true; 686 goto end; 687 fail: 688 tda_info("RF tracking filter calibration failed!\n"); 689 end: 690 return ret; 691 } 692 693 static int tda18271c1_rf_tracking_filter_calibration(struct dvb_frontend *fe, 694 u32 freq, u32 bw) 695 { 696 struct tda18271_priv *priv = fe->tuner_priv; 697 unsigned char *regs = priv->tda18271_regs; 698 int ret; 699 u32 N = 0; 700 701 /* calculate bp filter */ 702 tda18271_calc_bp_filter(fe, &freq); 703 tda18271_write_regs(fe, R_EP1, 1); 704 705 regs[R_EB4] &= 0x07; 706 regs[R_EB4] |= 0x60; 707 tda18271_write_regs(fe, R_EB4, 1); 708 709 regs[R_EB7] = 0x60; 710 tda18271_write_regs(fe, R_EB7, 1); 711 712 regs[R_EB14] = 0x00; 713 tda18271_write_regs(fe, R_EB14, 1); 714 715 regs[R_EB20] = 0xcc; 716 tda18271_write_regs(fe, R_EB20, 1); 717 718 /* set cal mode to RF tracking filter calibration */ 719 regs[R_EP4] |= 0x03; 720 721 /* calculate cal pll */ 722 723 switch (priv->mode) { 724 case TDA18271_ANALOG: 725 N = freq - 1250000; 726 break; 727 case TDA18271_DIGITAL: 728 N = freq + bw / 2; 729 break; 730 } 731 732 tda18271_calc_cal_pll(fe, N); 733 734 /* calculate main pll */ 735 736 switch (priv->mode) { 737 case TDA18271_ANALOG: 738 N = freq - 250000; 739 break; 740 case TDA18271_DIGITAL: 741 N = freq + bw / 2 + 1000000; 742 break; 743 } 744 745 tda18271_calc_main_pll(fe, N); 746 747 ret = tda18271_write_regs(fe, R_EP3, 11); 748 if (tda_fail(ret)) 749 return ret; 750 751 msleep(5); /* RF tracking filter calibration initialization */ 752 753 /* search for K,M,CO for RF calibration */ 754 tda18271_calc_km(fe, &freq); 755 tda18271_write_regs(fe, R_EB13, 1); 756 757 /* search for rf band */ 758 tda18271_calc_rf_band(fe, &freq); 759 760 /* search for gain taper */ 761 tda18271_calc_gain_taper(fe, &freq); 762 763 tda18271_write_regs(fe, R_EP2, 1); 764 tda18271_write_regs(fe, R_EP1, 1); 765 tda18271_write_regs(fe, R_EP2, 1); 766 tda18271_write_regs(fe, R_EP1, 1); 767 768 regs[R_EB4] &= 0x07; 769 regs[R_EB4] |= 0x40; 770 tda18271_write_regs(fe, R_EB4, 1); 771 772 regs[R_EB7] = 0x40; 773 tda18271_write_regs(fe, R_EB7, 1); 774 msleep(10); /* pll locking */ 775 776 regs[R_EB20] = 0xec; 777 tda18271_write_regs(fe, R_EB20, 1); 778 msleep(60); /* RF tracking filter calibration completion */ 779 780 regs[R_EP4] &= ~0x03; /* set cal mode to normal */ 781 tda18271_write_regs(fe, R_EP4, 1); 782 783 tda18271_write_regs(fe, R_EP1, 1); 784 785 /* RF tracking filter correction for VHF_Low band */ 786 if (0 == tda18271_calc_rf_cal(fe, &freq)) 787 tda18271_write_regs(fe, R_EB14, 1); 788 789 return 0; 790 } 791 792 /* ------------------------------------------------------------------ */ 793 794 static int tda18271_ir_cal_init(struct dvb_frontend *fe) 795 { 796 struct tda18271_priv *priv = fe->tuner_priv; 797 unsigned char *regs = priv->tda18271_regs; 798 int ret; 799 800 ret = tda18271_read_regs(fe); 801 if (tda_fail(ret)) 802 goto fail; 803 804 /* test IR_CAL_OK to see if we need init */ 805 if ((regs[R_EP1] & 0x08) == 0) 806 ret = tda18271_init_regs(fe); 807 fail: 808 return ret; 809 } 810 811 static int tda18271_init(struct dvb_frontend *fe) 812 { 813 struct tda18271_priv *priv = fe->tuner_priv; 814 int ret; 815 816 mutex_lock(&priv->lock); 817 818 /* full power up */ 819 ret = tda18271_set_standby_mode(fe, 0, 0, 0); 820 if (tda_fail(ret)) 821 goto fail; 822 823 /* initialization */ 824 ret = tda18271_ir_cal_init(fe); 825 if (tda_fail(ret)) 826 goto fail; 827 828 if (priv->id == TDA18271HDC2) 829 tda18271c2_rf_cal_init(fe); 830 fail: 831 mutex_unlock(&priv->lock); 832 833 return ret; 834 } 835 836 static int tda18271_sleep(struct dvb_frontend *fe) 837 { 838 struct tda18271_priv *priv = fe->tuner_priv; 839 int ret; 840 841 mutex_lock(&priv->lock); 842 843 /* enter standby mode, with required output features enabled */ 844 ret = tda18271_toggle_output(fe, 1); 845 846 mutex_unlock(&priv->lock); 847 848 return ret; 849 } 850 851 /* ------------------------------------------------------------------ */ 852 853 static int tda18271_agc(struct dvb_frontend *fe) 854 { 855 struct tda18271_priv *priv = fe->tuner_priv; 856 int ret = 0; 857 858 switch (priv->config) { 859 case TDA8290_LNA_OFF: 860 /* no external agc configuration required */ 861 if (tda18271_debug & DBG_ADV) 862 tda_dbg("no agc configuration provided\n"); 863 break; 864 case TDA8290_LNA_ON_BRIDGE: 865 /* switch with GPIO of saa713x */ 866 tda_dbg("invoking callback\n"); 867 if (fe->callback) 868 ret = fe->callback(priv->i2c_props.adap->algo_data, 869 DVB_FRONTEND_COMPONENT_TUNER, 870 TDA18271_CALLBACK_CMD_AGC_ENABLE, 871 priv->mode); 872 break; 873 case TDA8290_LNA_GP0_HIGH_ON: 874 case TDA8290_LNA_GP0_HIGH_OFF: 875 default: 876 /* n/a - currently not supported */ 877 tda_err("unsupported configuration: %d\n", priv->config); 878 ret = -EINVAL; 879 break; 880 } 881 return ret; 882 } 883 884 static int tda18271_tune(struct dvb_frontend *fe, 885 struct tda18271_std_map_item *map, u32 freq, u32 bw) 886 { 887 struct tda18271_priv *priv = fe->tuner_priv; 888 int ret; 889 890 tda_dbg("freq = %d, ifc = %d, bw = %d, agc_mode = %d, std = %d\n", 891 freq, map->if_freq, bw, map->agc_mode, map->std); 892 893 ret = tda18271_agc(fe); 894 if (tda_fail(ret)) 895 tda_warn("failed to configure agc\n"); 896 897 ret = tda18271_init(fe); 898 if (tda_fail(ret)) 899 goto fail; 900 901 mutex_lock(&priv->lock); 902 903 switch (priv->id) { 904 case TDA18271HDC1: 905 tda18271c1_rf_tracking_filter_calibration(fe, freq, bw); 906 break; 907 case TDA18271HDC2: 908 tda18271c2_rf_tracking_filters_correction(fe, freq); 909 break; 910 } 911 ret = tda18271_channel_configuration(fe, map, freq, bw); 912 913 mutex_unlock(&priv->lock); 914 fail: 915 return ret; 916 } 917 918 /* ------------------------------------------------------------------ */ 919 920 static int tda18271_set_params(struct dvb_frontend *fe) 921 { 922 struct dtv_frontend_properties *c = &fe->dtv_property_cache; 923 u32 delsys = c->delivery_system; 924 u32 bw = c->bandwidth_hz; 925 u32 freq = c->frequency; 926 struct tda18271_priv *priv = fe->tuner_priv; 927 struct tda18271_std_map *std_map = &priv->std; 928 struct tda18271_std_map_item *map; 929 int ret; 930 931 priv->mode = TDA18271_DIGITAL; 932 933 switch (delsys) { 934 case SYS_ATSC: 935 map = &std_map->atsc_6; 936 bw = 6000000; 937 break; 938 case SYS_ISDBT: 939 case SYS_DVBT: 940 case SYS_DVBT2: 941 if (bw <= 6000000) { 942 map = &std_map->dvbt_6; 943 } else if (bw <= 7000000) { 944 map = &std_map->dvbt_7; 945 } else { 946 map = &std_map->dvbt_8; 947 } 948 break; 949 case SYS_DVBC_ANNEX_B: 950 bw = 6000000; 951 fallthrough; 952 case SYS_DVBC_ANNEX_A: 953 case SYS_DVBC_ANNEX_C: 954 if (bw <= 6000000) { 955 map = &std_map->qam_6; 956 } else if (bw <= 7000000) { 957 map = &std_map->qam_7; 958 } else { 959 map = &std_map->qam_8; 960 } 961 break; 962 default: 963 tda_warn("modulation type not supported!\n"); 964 return -EINVAL; 965 } 966 967 /* When tuning digital, the analog demod must be tri-stated */ 968 if (fe->ops.analog_ops.standby) 969 fe->ops.analog_ops.standby(fe); 970 971 ret = tda18271_tune(fe, map, freq, bw); 972 973 if (tda_fail(ret)) 974 goto fail; 975 976 priv->if_freq = map->if_freq; 977 priv->frequency = freq; 978 priv->bandwidth = bw; 979 fail: 980 return ret; 981 } 982 983 static int tda18271_set_analog_params(struct dvb_frontend *fe, 984 struct analog_parameters *params) 985 { 986 struct tda18271_priv *priv = fe->tuner_priv; 987 struct tda18271_std_map *std_map = &priv->std; 988 struct tda18271_std_map_item *map; 989 char *mode; 990 int ret; 991 u32 freq = params->frequency * 125 * 992 ((params->mode == V4L2_TUNER_RADIO) ? 1 : 1000) / 2; 993 994 priv->mode = TDA18271_ANALOG; 995 996 if (params->mode == V4L2_TUNER_RADIO) { 997 map = &std_map->fm_radio; 998 mode = "fm"; 999 } else if (params->std & V4L2_STD_MN) { 1000 map = &std_map->atv_mn; 1001 mode = "MN"; 1002 } else if (params->std & V4L2_STD_B) { 1003 map = &std_map->atv_b; 1004 mode = "B"; 1005 } else if (params->std & V4L2_STD_GH) { 1006 map = &std_map->atv_gh; 1007 mode = "GH"; 1008 } else if (params->std & V4L2_STD_PAL_I) { 1009 map = &std_map->atv_i; 1010 mode = "I"; 1011 } else if (params->std & V4L2_STD_DK) { 1012 map = &std_map->atv_dk; 1013 mode = "DK"; 1014 } else if (params->std & V4L2_STD_SECAM_L) { 1015 map = &std_map->atv_l; 1016 mode = "L"; 1017 } else if (params->std & V4L2_STD_SECAM_LC) { 1018 map = &std_map->atv_lc; 1019 mode = "L'"; 1020 } else { 1021 map = &std_map->atv_i; 1022 mode = "xx"; 1023 } 1024 1025 tda_dbg("setting tda18271 to system %s\n", mode); 1026 1027 ret = tda18271_tune(fe, map, freq, 0); 1028 1029 if (tda_fail(ret)) 1030 goto fail; 1031 1032 priv->if_freq = map->if_freq; 1033 priv->frequency = freq; 1034 priv->bandwidth = 0; 1035 fail: 1036 return ret; 1037 } 1038 1039 static void tda18271_release(struct dvb_frontend *fe) 1040 { 1041 struct tda18271_priv *priv = fe->tuner_priv; 1042 1043 mutex_lock(&tda18271_list_mutex); 1044 1045 if (priv) 1046 hybrid_tuner_release_state(priv); 1047 1048 mutex_unlock(&tda18271_list_mutex); 1049 1050 fe->tuner_priv = NULL; 1051 } 1052 1053 static int tda18271_get_frequency(struct dvb_frontend *fe, u32 *frequency) 1054 { 1055 struct tda18271_priv *priv = fe->tuner_priv; 1056 *frequency = priv->frequency; 1057 return 0; 1058 } 1059 1060 static int tda18271_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth) 1061 { 1062 struct tda18271_priv *priv = fe->tuner_priv; 1063 *bandwidth = priv->bandwidth; 1064 return 0; 1065 } 1066 1067 static int tda18271_get_if_frequency(struct dvb_frontend *fe, u32 *frequency) 1068 { 1069 struct tda18271_priv *priv = fe->tuner_priv; 1070 *frequency = (u32)priv->if_freq * 1000; 1071 return 0; 1072 } 1073 1074 /* ------------------------------------------------------------------ */ 1075 1076 #define tda18271_update_std(std_cfg, name) do { \ 1077 if (map->std_cfg.if_freq + \ 1078 map->std_cfg.agc_mode + map->std_cfg.std + \ 1079 map->std_cfg.if_lvl + map->std_cfg.rfagc_top > 0) { \ 1080 tda_dbg("Using custom std config for %s\n", name); \ 1081 memcpy(&std->std_cfg, &map->std_cfg, \ 1082 sizeof(struct tda18271_std_map_item)); \ 1083 } } while (0) 1084 1085 #define tda18271_dump_std_item(std_cfg, name) do { \ 1086 tda_dbg("(%s) if_freq = %d, agc_mode = %d, std = %d, " \ 1087 "if_lvl = %d, rfagc_top = 0x%02x\n", \ 1088 name, std->std_cfg.if_freq, \ 1089 std->std_cfg.agc_mode, std->std_cfg.std, \ 1090 std->std_cfg.if_lvl, std->std_cfg.rfagc_top); \ 1091 } while (0) 1092 1093 static int tda18271_dump_std_map(struct dvb_frontend *fe) 1094 { 1095 struct tda18271_priv *priv = fe->tuner_priv; 1096 struct tda18271_std_map *std = &priv->std; 1097 1098 tda_dbg("========== STANDARD MAP SETTINGS ==========\n"); 1099 tda18271_dump_std_item(fm_radio, " fm "); 1100 tda18271_dump_std_item(atv_b, "atv b "); 1101 tda18271_dump_std_item(atv_dk, "atv dk"); 1102 tda18271_dump_std_item(atv_gh, "atv gh"); 1103 tda18271_dump_std_item(atv_i, "atv i "); 1104 tda18271_dump_std_item(atv_l, "atv l "); 1105 tda18271_dump_std_item(atv_lc, "atv l'"); 1106 tda18271_dump_std_item(atv_mn, "atv mn"); 1107 tda18271_dump_std_item(atsc_6, "atsc 6"); 1108 tda18271_dump_std_item(dvbt_6, "dvbt 6"); 1109 tda18271_dump_std_item(dvbt_7, "dvbt 7"); 1110 tda18271_dump_std_item(dvbt_8, "dvbt 8"); 1111 tda18271_dump_std_item(qam_6, "qam 6 "); 1112 tda18271_dump_std_item(qam_7, "qam 7 "); 1113 tda18271_dump_std_item(qam_8, "qam 8 "); 1114 1115 return 0; 1116 } 1117 1118 static int tda18271_update_std_map(struct dvb_frontend *fe, 1119 struct tda18271_std_map *map) 1120 { 1121 struct tda18271_priv *priv = fe->tuner_priv; 1122 struct tda18271_std_map *std = &priv->std; 1123 1124 if (!map) 1125 return -EINVAL; 1126 1127 tda18271_update_std(fm_radio, "fm"); 1128 tda18271_update_std(atv_b, "atv b"); 1129 tda18271_update_std(atv_dk, "atv dk"); 1130 tda18271_update_std(atv_gh, "atv gh"); 1131 tda18271_update_std(atv_i, "atv i"); 1132 tda18271_update_std(atv_l, "atv l"); 1133 tda18271_update_std(atv_lc, "atv l'"); 1134 tda18271_update_std(atv_mn, "atv mn"); 1135 tda18271_update_std(atsc_6, "atsc 6"); 1136 tda18271_update_std(dvbt_6, "dvbt 6"); 1137 tda18271_update_std(dvbt_7, "dvbt 7"); 1138 tda18271_update_std(dvbt_8, "dvbt 8"); 1139 tda18271_update_std(qam_6, "qam 6"); 1140 tda18271_update_std(qam_7, "qam 7"); 1141 tda18271_update_std(qam_8, "qam 8"); 1142 1143 return 0; 1144 } 1145 1146 static int tda18271_get_id(struct dvb_frontend *fe) 1147 { 1148 struct tda18271_priv *priv = fe->tuner_priv; 1149 unsigned char *regs = priv->tda18271_regs; 1150 char *name; 1151 int ret; 1152 1153 mutex_lock(&priv->lock); 1154 ret = tda18271_read_regs(fe); 1155 mutex_unlock(&priv->lock); 1156 1157 if (ret) { 1158 tda_info("Error reading device ID @ %d-%04x, bailing out.\n", 1159 i2c_adapter_id(priv->i2c_props.adap), 1160 priv->i2c_props.addr); 1161 return -EIO; 1162 } 1163 1164 switch (regs[R_ID] & 0x7f) { 1165 case 3: 1166 name = "TDA18271HD/C1"; 1167 priv->id = TDA18271HDC1; 1168 break; 1169 case 4: 1170 name = "TDA18271HD/C2"; 1171 priv->id = TDA18271HDC2; 1172 break; 1173 default: 1174 tda_info("Unknown device (%i) detected @ %d-%04x, device not supported.\n", 1175 regs[R_ID], i2c_adapter_id(priv->i2c_props.adap), 1176 priv->i2c_props.addr); 1177 return -EINVAL; 1178 } 1179 1180 tda_info("%s detected @ %d-%04x\n", name, 1181 i2c_adapter_id(priv->i2c_props.adap), priv->i2c_props.addr); 1182 1183 return 0; 1184 } 1185 1186 static int tda18271_setup_configuration(struct dvb_frontend *fe, 1187 struct tda18271_config *cfg) 1188 { 1189 struct tda18271_priv *priv = fe->tuner_priv; 1190 1191 priv->gate = (cfg) ? cfg->gate : TDA18271_GATE_AUTO; 1192 priv->role = (cfg) ? cfg->role : TDA18271_MASTER; 1193 priv->config = (cfg) ? cfg->config : 0; 1194 priv->small_i2c = (cfg) ? 1195 cfg->small_i2c : TDA18271_39_BYTE_CHUNK_INIT; 1196 priv->output_opt = (cfg) ? 1197 cfg->output_opt : TDA18271_OUTPUT_LT_XT_ON; 1198 1199 return 0; 1200 } 1201 1202 static inline int tda18271_need_cal_on_startup(struct tda18271_config *cfg) 1203 { 1204 /* tda18271_cal_on_startup == -1 when cal module option is unset */ 1205 return ((tda18271_cal_on_startup == -1) ? 1206 /* honor configuration setting */ 1207 ((cfg) && (cfg->rf_cal_on_startup)) : 1208 /* module option overrides configuration setting */ 1209 (tda18271_cal_on_startup)) ? 1 : 0; 1210 } 1211 1212 static int tda18271_set_config(struct dvb_frontend *fe, void *priv_cfg) 1213 { 1214 struct tda18271_config *cfg = (struct tda18271_config *) priv_cfg; 1215 1216 tda18271_setup_configuration(fe, cfg); 1217 1218 if (tda18271_need_cal_on_startup(cfg)) 1219 tda18271_init(fe); 1220 1221 /* override default std map with values in config struct */ 1222 if ((cfg) && (cfg->std_map)) 1223 tda18271_update_std_map(fe, cfg->std_map); 1224 1225 return 0; 1226 } 1227 1228 static const struct dvb_tuner_ops tda18271_tuner_ops = { 1229 .info = { 1230 .name = "NXP TDA18271HD", 1231 .frequency_min_hz = 45 * MHz, 1232 .frequency_max_hz = 864 * MHz, 1233 .frequency_step_hz = 62500 1234 }, 1235 .init = tda18271_init, 1236 .sleep = tda18271_sleep, 1237 .set_params = tda18271_set_params, 1238 .set_analog_params = tda18271_set_analog_params, 1239 .release = tda18271_release, 1240 .set_config = tda18271_set_config, 1241 .get_frequency = tda18271_get_frequency, 1242 .get_bandwidth = tda18271_get_bandwidth, 1243 .get_if_frequency = tda18271_get_if_frequency, 1244 }; 1245 1246 struct dvb_frontend *tda18271_attach(struct dvb_frontend *fe, u8 addr, 1247 struct i2c_adapter *i2c, 1248 struct tda18271_config *cfg) 1249 { 1250 struct tda18271_priv *priv = NULL; 1251 int instance, ret; 1252 1253 mutex_lock(&tda18271_list_mutex); 1254 1255 instance = hybrid_tuner_request_state(struct tda18271_priv, priv, 1256 hybrid_tuner_instance_list, 1257 i2c, addr, "tda18271"); 1258 switch (instance) { 1259 case 0: 1260 goto fail; 1261 case 1: 1262 /* new tuner instance */ 1263 fe->tuner_priv = priv; 1264 1265 tda18271_setup_configuration(fe, cfg); 1266 1267 priv->cal_initialized = false; 1268 mutex_init(&priv->lock); 1269 1270 ret = tda18271_get_id(fe); 1271 if (tda_fail(ret)) 1272 goto fail; 1273 1274 ret = tda18271_assign_map_layout(fe); 1275 if (tda_fail(ret)) 1276 goto fail; 1277 1278 /* if delay_cal is set, delay IR & RF calibration until init() 1279 * module option 'cal' overrides this delay */ 1280 if ((cfg->delay_cal) && (!tda18271_need_cal_on_startup(cfg))) 1281 break; 1282 1283 mutex_lock(&priv->lock); 1284 tda18271_init_regs(fe); 1285 1286 if ((tda18271_need_cal_on_startup(cfg)) && 1287 (priv->id == TDA18271HDC2)) 1288 tda18271c2_rf_cal_init(fe); 1289 1290 /* enter standby mode, with required output features enabled */ 1291 ret = tda18271_toggle_output(fe, 1); 1292 tda_fail(ret); 1293 1294 mutex_unlock(&priv->lock); 1295 break; 1296 default: 1297 /* existing tuner instance */ 1298 fe->tuner_priv = priv; 1299 1300 /* allow dvb driver to override configuration settings */ 1301 if (cfg) { 1302 if (cfg->gate != TDA18271_GATE_ANALOG) 1303 priv->gate = cfg->gate; 1304 if (cfg->role) 1305 priv->role = cfg->role; 1306 if (cfg->config) 1307 priv->config = cfg->config; 1308 if (cfg->small_i2c) 1309 priv->small_i2c = cfg->small_i2c; 1310 if (cfg->output_opt) 1311 priv->output_opt = cfg->output_opt; 1312 if (cfg->std_map) 1313 tda18271_update_std_map(fe, cfg->std_map); 1314 } 1315 if (tda18271_need_cal_on_startup(cfg)) 1316 tda18271_init(fe); 1317 break; 1318 } 1319 1320 /* override default std map with values in config struct */ 1321 if ((cfg) && (cfg->std_map)) 1322 tda18271_update_std_map(fe, cfg->std_map); 1323 1324 mutex_unlock(&tda18271_list_mutex); 1325 1326 memcpy(&fe->ops.tuner_ops, &tda18271_tuner_ops, 1327 sizeof(struct dvb_tuner_ops)); 1328 1329 if (tda18271_debug & (DBG_MAP | DBG_ADV)) 1330 tda18271_dump_std_map(fe); 1331 1332 return fe; 1333 fail: 1334 mutex_unlock(&tda18271_list_mutex); 1335 1336 tda18271_release(fe); 1337 return NULL; 1338 } 1339 EXPORT_SYMBOL_GPL(tda18271_attach); 1340 MODULE_DESCRIPTION("NXP TDA18271HD analog / digital tuner driver"); 1341 MODULE_AUTHOR("Michael Krufky <mkrufky@linuxtv.org>"); 1342 MODULE_LICENSE("GPL"); 1343 MODULE_VERSION("0.4"); 1344