bktr_tuner.c revision 56531
1/* $FreeBSD: head/sys/dev/bktr/bktr_tuner.c 56531 2000-01-24 14:00:21Z roger $ */ 2 3/* 4 * This is part of the Driver for Video Capture Cards (Frame grabbers) 5 * and TV Tuner cards using the Brooktree Bt848, Bt848A, Bt849A, Bt878, Bt879 6 * chipset. 7 * Copyright Roger Hardiman and Amancio Hasty. 8 * 9 * bktr_tuner : This deals with controlling the tuner fitted to TV cards. 10 * 11 */ 12 13/* 14 * 1. Redistributions of source code must retain the 15 * Copyright (c) 1997 Amancio Hasty, 1999 Roger Hardiman 16 * All rights reserved. 17 * 18 * Redistribution and use in source and binary forms, with or without 19 * modification, are permitted provided that the following conditions 20 * are met: 21 * 1. Redistributions of source code must retain the above copyright 22 * notice, this list of conditions and the following disclaimer. 23 * 2. Redistributions in binary form must reproduce the above copyright 24 * notice, this list of conditions and the following disclaimer in the 25 * documentation and/or other materials provided with the distribution. 26 * 3. All advertising materials mentioning features or use of this software 27 * must display the following acknowledgement: 28 * This product includes software developed by Amancio Hasty and 29 * Roger Hardiman 30 * 4. The name of the author may not be used to endorse or promote products 31 * derived from this software without specific prior written permission. 32 * 33 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 34 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 35 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 36 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 37 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 38 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 39 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 40 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 41 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 42 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 43 * POSSIBILITY OF SUCH DAMAGE. 44 */ 45 46 47 48#include <sys/param.h> 49#include <sys/systm.h> 50#include <sys/kernel.h> 51#include <sys/vnode.h> 52 53#include <machine/clock.h> /* for DELAY */ 54 55#include <pci/pcivar.h> 56 57#include <machine/ioctl_meteor.h> 58#include <machine/ioctl_bt848.h> /* extensions to ioctl_meteor.h */ 59#include <dev/bktr/bktr_reg.h> 60#include <dev/bktr/bktr_tuner.h> 61#include <dev/bktr/bktr_card.h> 62#include <dev/bktr/bktr_core.h> 63 64 65 66#if defined( TUNER_AFC ) 67#define AFC_DELAY 10000 /* 10 millisend delay */ 68#define AFC_BITS 0x07 69#define AFC_FREQ_MINUS_125 0x00 70#define AFC_FREQ_MINUS_62 0x01 71#define AFC_FREQ_CENTERED 0x02 72#define AFC_FREQ_PLUS_62 0x03 73#define AFC_FREQ_PLUS_125 0x04 74#define AFC_MAX_STEP (5 * FREQFACTOR) /* no more than 5 MHz */ 75#endif /* TUNER_AFC */ 76 77 78#define TTYPE_XXX 0 79#define TTYPE_NTSC 1 80#define TTYPE_NTSC_J 2 81#define TTYPE_PAL 3 82#define TTYPE_PAL_M 4 83#define TTYPE_PAL_N 5 84#define TTYPE_SECAM 6 85 86#define TSA552x_CB_MSB (0x80) 87#define TSA552x_CB_CP (1<<6) /* set this for fast tuning */ 88#define TSA552x_CB_T2 (1<<5) /* test mode - Normally set to 0 */ 89#define TSA552x_CB_T1 (1<<4) /* test mode - Normally set to 0 */ 90#define TSA552x_CB_T0 (1<<3) /* test mode - Normally set to 1 */ 91#define TSA552x_CB_RSA (1<<2) /* 0 for 31.25 khz, 1 for 62.5 kHz */ 92#define TSA552x_CB_RSB (1<<1) /* 0 for FM 50kHz steps, 1 = Use RSA*/ 93#define TSA552x_CB_OS (1<<0) /* Set to 0 for normal operation */ 94 95#define TSA552x_RADIO (TSA552x_CB_MSB | \ 96 TSA552x_CB_T0) 97 98/* raise the charge pump voltage for fast tuning */ 99#define TSA552x_FCONTROL (TSA552x_CB_MSB | \ 100 TSA552x_CB_CP | \ 101 TSA552x_CB_T0 | \ 102 TSA552x_CB_RSA | \ 103 TSA552x_CB_RSB) 104 105/* lower the charge pump voltage for better residual oscillator FM */ 106#define TSA552x_SCONTROL (TSA552x_CB_MSB | \ 107 TSA552x_CB_T0 | \ 108 TSA552x_CB_RSA | \ 109 TSA552x_CB_RSB) 110 111/* The control value for the ALPS TSCH5 Tuner */ 112#define TSCH5_FCONTROL 0x82 113#define TSCH5_RADIO 0x86 114 115/* The control value for the ALPS TSBH1 Tuner */ 116#define TSBH1_FCONTROL 0xce 117 118 119static const struct TUNER tuners[] = { 120/* XXX FIXME: fill in the band-switch crosspoints */ 121 /* NO_TUNER */ 122 { "<no>", /* the 'name' */ 123 TTYPE_XXX, /* input type */ 124 { 0x00, /* control byte for Tuner PLL */ 125 0x00, 126 0x00, 127 0x00 }, 128 { 0x00, 0x00 }, /* band-switch crosspoints */ 129 { 0x00, 0x00, 0x00,0x00} }, /* the band-switch values */ 130 131 /* TEMIC_NTSC */ 132 { "Temic NTSC", /* the 'name' */ 133 TTYPE_NTSC, /* input type */ 134 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 135 TSA552x_SCONTROL, 136 TSA552x_SCONTROL, 137 0x00 }, 138 { 0x00, 0x00}, /* band-switch crosspoints */ 139 { 0x02, 0x04, 0x01, 0x00 } }, /* the band-switch values */ 140 141 /* TEMIC_PAL */ 142 { "Temic PAL", /* the 'name' */ 143 TTYPE_PAL, /* input type */ 144 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 145 TSA552x_SCONTROL, 146 TSA552x_SCONTROL, 147 0x00 }, 148 { 0x00, 0x00 }, /* band-switch crosspoints */ 149 { 0x02, 0x04, 0x01, 0x00 } }, /* the band-switch values */ 150 151 /* TEMIC_SECAM */ 152 { "Temic SECAM", /* the 'name' */ 153 TTYPE_SECAM, /* input type */ 154 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 155 TSA552x_SCONTROL, 156 TSA552x_SCONTROL, 157 0x00 }, 158 { 0x00, 0x00 }, /* band-switch crosspoints */ 159 { 0x02, 0x04, 0x01,0x00 } }, /* the band-switch values */ 160 161 /* PHILIPS_NTSC */ 162 { "Philips NTSC", /* the 'name' */ 163 TTYPE_NTSC, /* input type */ 164 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 165 TSA552x_SCONTROL, 166 TSA552x_SCONTROL, 167 0x00 }, 168 { 0x00, 0x00 }, /* band-switch crosspoints */ 169 { 0xa0, 0x90, 0x30, 0x00 } }, /* the band-switch values */ 170 171 /* PHILIPS_PAL */ 172 { "Philips PAL", /* the 'name' */ 173 TTYPE_PAL, /* input type */ 174 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 175 TSA552x_SCONTROL, 176 TSA552x_SCONTROL, 177 0x00 }, 178 { 0x00, 0x00 }, /* band-switch crosspoints */ 179 { 0xa0, 0x90, 0x30, 0x00 } }, /* the band-switch values */ 180 181 /* PHILIPS_SECAM */ 182 { "Philips SECAM", /* the 'name' */ 183 TTYPE_SECAM, /* input type */ 184 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 185 TSA552x_SCONTROL, 186 TSA552x_SCONTROL, 187 0x00 }, 188 { 0x00, 0x00 }, /* band-switch crosspoints */ 189 { 0xa7, 0x97, 0x37, 0x00 } }, /* the band-switch values */ 190 191 /* TEMIC_PAL I */ 192 { "Temic PAL I", /* the 'name' */ 193 TTYPE_PAL, /* input type */ 194 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 195 TSA552x_SCONTROL, 196 TSA552x_SCONTROL, 197 0x00 }, 198 { 0x00, 0x00 }, /* band-switch crosspoints */ 199 { 0x02, 0x04, 0x01,0x00 } }, /* the band-switch values */ 200 201 /* PHILIPS_PALI */ 202 { "Philips PAL I", /* the 'name' */ 203 TTYPE_PAL, /* input type */ 204 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 205 TSA552x_SCONTROL, 206 TSA552x_SCONTROL, 207 0x00 }, 208 { 0x00, 0x00 }, /* band-switch crosspoints */ 209 { 0xa0, 0x90, 0x30,0x00 } }, /* the band-switch values */ 210 211 /* PHILIPS_FR1236_NTSC */ 212 { "Philips FR1236 NTSC FM", /* the 'name' */ 213 TTYPE_NTSC, /* input type */ 214 { TSA552x_FCONTROL, /* control byte for Tuner PLL */ 215 TSA552x_FCONTROL, 216 TSA552x_FCONTROL, 217 TSA552x_RADIO }, 218 { 0x00, 0x00 }, /* band-switch crosspoints */ 219 { 0xa0, 0x90, 0x30,0xa4 } }, /* the band-switch values */ 220 221 /* PHILIPS_FR1216_PAL */ 222 { "Philips FR1216 PAL FM" , /* the 'name' */ 223 TTYPE_PAL, /* input type */ 224 { TSA552x_FCONTROL, /* control byte for Tuner PLL */ 225 TSA552x_FCONTROL, 226 TSA552x_FCONTROL, 227 TSA552x_RADIO }, 228 { 0x00, 0x00 }, /* band-switch crosspoints */ 229 { 0xa0, 0x90, 0x30, 0xa4 } }, /* the band-switch values */ 230 231 /* PHILIPS_FR1236_SECAM */ 232 { "Philips FR1236 SECAM FM", /* the 'name' */ 233 TTYPE_SECAM, /* input type */ 234 { TSA552x_FCONTROL, /* control byte for Tuner PLL */ 235 TSA552x_FCONTROL, 236 TSA552x_FCONTROL, 237 TSA552x_RADIO }, 238 { 0x00, 0x00 }, /* band-switch crosspoints */ 239 { 0xa7, 0x97, 0x37, 0xa4 } }, /* the band-switch values */ 240 241 /* ALPS TSCH5 NTSC */ 242 { "ALPS TSCH5 NTSC FM", /* the 'name' */ 243 TTYPE_NTSC, /* input type */ 244 { TSCH5_FCONTROL, /* control byte for Tuner PLL */ 245 TSCH5_FCONTROL, 246 TSCH5_FCONTROL, 247 TSCH5_RADIO }, 248 { 0x00, 0x00 }, /* band-switch crosspoints */ 249 { 0x14, 0x12, 0x11, 0x04 } }, /* the band-switch values */ 250 251 /* ALPS TSBH1 NTSC */ 252 { "ALPS TSBH1 NTSC", /* the 'name' */ 253 TTYPE_NTSC, /* input type */ 254 { TSBH1_FCONTROL, /* control byte for Tuner PLL */ 255 TSBH1_FCONTROL, 256 TSBH1_FCONTROL, 257 0x00 }, 258 { 0x00, 0x00 }, /* band-switch crosspoints */ 259 { 0x01, 0x02, 0x08, 0x00 } } /* the band-switch values */ 260}; 261 262 263/* scaling factor for frequencies expressed as ints */ 264#define FREQFACTOR 16 265 266/* 267 * Format: 268 * entry 0: MAX legal channel 269 * entry 1: IF frequency 270 * expressed as fi{mHz} * 16, 271 * eg 45.75mHz == 45.75 * 16 = 732 272 * entry 2: [place holder/future] 273 * entry 3: base of channel record 0 274 * entry 3 + (x*3): base of channel record 'x' 275 * entry LAST: NULL channel entry marking end of records 276 * 277 * Record: 278 * int 0: base channel 279 * int 1: frequency of base channel, 280 * expressed as fb{mHz} * 16, 281 * int 2: offset frequency between channels, 282 * expressed as fo{mHz} * 16, 283 */ 284 285/* 286 * North American Broadcast Channels: 287 * 288 * 2: 55.25 mHz - 4: 67.25 mHz 289 * 5: 77.25 mHz - 6: 83.25 mHz 290 * 7: 175.25 mHz - 13: 211.25 mHz 291 * 14: 471.25 mHz - 83: 885.25 mHz 292 * 293 * IF freq: 45.75 mHz 294 */ 295#define OFFSET 6.00 296static int nabcst[] = { 297 83, (int)( 45.75 * FREQFACTOR), 0, 298 14, (int)(471.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 299 7, (int)(175.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 300 5, (int)( 77.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 301 2, (int)( 55.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 302 0 303}; 304#undef OFFSET 305 306/* 307 * North American Cable Channels, IRC: 308 * 309 * 2: 55.25 mHz - 4: 67.25 mHz 310 * 5: 77.25 mHz - 6: 83.25 mHz 311 * 7: 175.25 mHz - 13: 211.25 mHz 312 * 14: 121.25 mHz - 22: 169.25 mHz 313 * 23: 217.25 mHz - 94: 643.25 mHz 314 * 95: 91.25 mHz - 99: 115.25 mHz 315 * 316 * IF freq: 45.75 mHz 317 */ 318#define OFFSET 6.00 319static int irccable[] = { 320 99, (int)( 45.75 * FREQFACTOR), 0, 321 95, (int)( 91.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 322 23, (int)(217.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 323 14, (int)(121.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 324 7, (int)(175.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 325 5, (int)( 77.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 326 2, (int)( 55.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 327 0 328}; 329#undef OFFSET 330 331/* 332 * North American Cable Channels, HRC: 333 * 334 * 2: 54 mHz - 4: 66 mHz 335 * 5: 78 mHz - 6: 84 mHz 336 * 7: 174 mHz - 13: 210 mHz 337 * 14: 120 mHz - 22: 168 mHz 338 * 23: 216 mHz - 94: 642 mHz 339 * 95: 90 mHz - 99: 114 mHz 340 * 341 * IF freq: 45.75 mHz 342 */ 343#define OFFSET 6.00 344static int hrccable[] = { 345 99, (int)( 45.75 * FREQFACTOR), 0, 346 95, (int)( 90.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 347 23, (int)(216.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 348 14, (int)(120.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 349 7, (int)(174.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 350 5, (int)( 78.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 351 2, (int)( 54.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 352 0 353}; 354#undef OFFSET 355 356/* 357 * Western European broadcast channels: 358 * 359 * (there are others that appear to vary between countries - rmt) 360 * 361 * here's the table Philips provides: 362 * caution, some of the offsets don't compute... 363 * 364 * 1 4525 700 N21 365 * 366 * 2 4825 700 E2 367 * 3 5525 700 E3 368 * 4 6225 700 E4 369 * 370 * 5 17525 700 E5 371 * 6 18225 700 E6 372 * 7 18925 700 E7 373 * 8 19625 700 E8 374 * 9 20325 700 E9 375 * 10 21025 700 E10 376 * 11 21725 700 E11 377 * 12 22425 700 E12 378 * 379 * 13 5375 700 ITA 380 * 14 6225 700 ITB 381 * 382 * 15 8225 700 ITC 383 * 384 * 16 17525 700 ITD 385 * 17 18325 700 ITE 386 * 387 * 18 19225 700 ITF 388 * 19 20125 700 ITG 389 * 20 21025 700 ITH 390 * 391 * 21 47125 800 E21 392 * 22 47925 800 E22 393 * 23 48725 800 E23 394 * 24 49525 800 E24 395 * 25 50325 800 E25 396 * 26 51125 800 E26 397 * 27 51925 800 E27 398 * 28 52725 800 E28 399 * 29 53525 800 E29 400 * 30 54325 800 E30 401 * 31 55125 800 E31 402 * 32 55925 800 E32 403 * 33 56725 800 E33 404 * 34 57525 800 E34 405 * 35 58325 800 E35 406 * 36 59125 800 E36 407 * 37 59925 800 E37 408 * 38 60725 800 E38 409 * 39 61525 800 E39 410 * 40 62325 800 E40 411 * 41 63125 800 E41 412 * 42 63925 800 E42 413 * 43 64725 800 E43 414 * 44 65525 800 E44 415 * 45 66325 800 E45 416 * 46 67125 800 E46 417 * 47 67925 800 E47 418 * 48 68725 800 E48 419 * 49 69525 800 E49 420 * 50 70325 800 E50 421 * 51 71125 800 E51 422 * 52 71925 800 E52 423 * 53 72725 800 E53 424 * 54 73525 800 E54 425 * 55 74325 800 E55 426 * 56 75125 800 E56 427 * 57 75925 800 E57 428 * 58 76725 800 E58 429 * 59 77525 800 E59 430 * 60 78325 800 E60 431 * 61 79125 800 E61 432 * 62 79925 800 E62 433 * 63 80725 800 E63 434 * 64 81525 800 E64 435 * 65 82325 800 E65 436 * 66 83125 800 E66 437 * 67 83925 800 E67 438 * 68 84725 800 E68 439 * 69 85525 800 E69 440 * 441 * 70 4575 800 IA 442 * 71 5375 800 IB 443 * 72 6175 800 IC 444 * 445 * 74 6925 700 S01 446 * 75 7625 700 S02 447 * 76 8325 700 S03 448 * 449 * 80 10525 700 S1 450 * 81 11225 700 S2 451 * 82 11925 700 S3 452 * 83 12625 700 S4 453 * 84 13325 700 S5 454 * 85 14025 700 S6 455 * 86 14725 700 S7 456 * 87 15425 700 S8 457 * 88 16125 700 S9 458 * 89 16825 700 S10 459 * 90 23125 700 S11 460 * 91 23825 700 S12 461 * 92 24525 700 S13 462 * 93 25225 700 S14 463 * 94 25925 700 S15 464 * 95 26625 700 S16 465 * 96 27325 700 S17 466 * 97 28025 700 S18 467 * 98 28725 700 S19 468 * 99 29425 700 S20 469 * 470 * 471 * Channels S21 - S41 are taken from 472 * http://gemma.apple.com:80/dev/technotes/tn/tn1012.html 473 * 474 * 100 30325 800 S21 475 * 101 31125 800 S22 476 * 102 31925 800 S23 477 * 103 32725 800 S24 478 * 104 33525 800 S25 479 * 105 34325 800 S26 480 * 106 35125 800 S27 481 * 107 35925 800 S28 482 * 108 36725 800 S29 483 * 109 37525 800 S30 484 * 110 38325 800 S31 485 * 111 39125 800 S32 486 * 112 39925 800 S33 487 * 113 40725 800 S34 488 * 114 41525 800 S35 489 * 115 42325 800 S36 490 * 116 43125 800 S37 491 * 117 43925 800 S38 492 * 118 44725 800 S39 493 * 119 45525 800 S40 494 * 120 46325 800 S41 495 * 496 * 121 3890 000 IFFREQ 497 * 498 */ 499static int weurope[] = { 500 121, (int)( 38.90 * FREQFACTOR), 0, 501 100, (int)(303.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 502 90, (int)(231.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR), 503 80, (int)(105.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR), 504 74, (int)( 69.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR), 505 21, (int)(471.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 506 17, (int)(183.25 * FREQFACTOR), (int)(9.00 * FREQFACTOR), 507 16, (int)(175.25 * FREQFACTOR), (int)(9.00 * FREQFACTOR), 508 15, (int)(82.25 * FREQFACTOR), (int)(8.50 * FREQFACTOR), 509 13, (int)(53.75 * FREQFACTOR), (int)(8.50 * FREQFACTOR), 510 5, (int)(175.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR), 511 2, (int)(48.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR), 512 0 513}; 514 515/* 516 * Japanese Broadcast Channels: 517 * 518 * 1: 91.25MHz - 3: 103.25MHz 519 * 4: 171.25MHz - 7: 189.25MHz 520 * 8: 193.25MHz - 12: 217.25MHz (VHF) 521 * 13: 471.25MHz - 62: 765.25MHz (UHF) 522 * 523 * IF freq: 45.75 mHz 524 * OR 525 * IF freq: 58.75 mHz 526 */ 527#define OFFSET 6.00 528#define IF_FREQ 45.75 529static int jpnbcst[] = { 530 62, (int)(IF_FREQ * FREQFACTOR), 0, 531 13, (int)(471.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 532 8, (int)(193.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 533 4, (int)(171.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 534 1, (int)( 91.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 535 0 536}; 537#undef IF_FREQ 538#undef OFFSET 539 540/* 541 * Japanese Cable Channels: 542 * 543 * 1: 91.25MHz - 3: 103.25MHz 544 * 4: 171.25MHz - 7: 189.25MHz 545 * 8: 193.25MHz - 12: 217.25MHz 546 * 13: 109.25MHz - 21: 157.25MHz 547 * 22: 165.25MHz 548 * 23: 223.25MHz - 63: 463.25MHz 549 * 550 * IF freq: 45.75 mHz 551 */ 552#define OFFSET 6.00 553#define IF_FREQ 45.75 554static int jpncable[] = { 555 63, (int)(IF_FREQ * FREQFACTOR), 0, 556 23, (int)(223.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 557 22, (int)(165.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 558 13, (int)(109.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 559 8, (int)(193.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 560 4, (int)(171.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 561 1, (int)( 91.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 562 0 563}; 564#undef IF_FREQ 565#undef OFFSET 566 567/* 568 * xUSSR Broadcast Channels: 569 * 570 * 1: 49.75MHz - 2: 59.25MHz 571 * 3: 77.25MHz - 5: 93.25MHz 572 * 6: 175.25MHz - 12: 223.25MHz 573 * 13-20 - not exist 574 * 21: 471.25MHz - 34: 575.25MHz 575 * 35: 583.25MHz - 69: 855.25MHz 576 * 577 * Cable channels 578 * 579 * 70: 111.25MHz - 77: 167.25MHz 580 * 78: 231.25MHz -107: 463.25MHz 581 * 582 * IF freq: 38.90 MHz 583 */ 584#define IF_FREQ 38.90 585static int xussr[] = { 586 107, (int)(IF_FREQ * FREQFACTOR), 0, 587 78, (int)(231.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 588 70, (int)(111.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 589 35, (int)(583.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 590 21, (int)(471.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 591 6, (int)(175.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 592 3, (int)( 77.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 593 1, (int)( 49.75 * FREQFACTOR), (int)(9.50 * FREQFACTOR), 594 0 595}; 596#undef IF_FREQ 597 598/* 599 * Australian broadcast channels 600 */ 601#define OFFSET 7.00 602#define IF_FREQ 38.90 603static int australia[] = { 604 83, (int)(IF_FREQ * FREQFACTOR), 0, 605 28, (int)(527.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 606 10, (int)(209.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 607 6, (int)(175.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 608 4, (int)( 95.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 609 3, (int)( 86.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 610 1, (int)( 57.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 611 0 612}; 613#undef OFFSET 614#undef IF_FREQ 615 616/* 617 * France broadcast channels 618 */ 619#define OFFSET 8.00 620#define IF_FREQ 38.90 621static int france[] = { 622 69, (int)(IF_FREQ * FREQFACTOR), 0, 623 21, (int)(471.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 21 -> 69 */ 624 5, (int)(176.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 5 -> 10 */ 625 4, (int)( 63.75 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 4 */ 626 3, (int)( 60.50 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 3 */ 627 1, (int)( 47.75 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 1 2 */ 628 0 629}; 630#undef OFFSET 631#undef IF_FREQ 632 633static struct { 634 int *ptr; 635 char name[BT848_MAX_CHNLSET_NAME_LEN]; 636} freqTable[] = { 637 {NULL, ""}, 638 {nabcst, "nabcst"}, 639 {irccable, "cableirc"}, 640 {hrccable, "cablehrc"}, 641 {weurope, "weurope"}, 642 {jpnbcst, "jpnbcst"}, 643 {jpncable, "jpncable"}, 644 {xussr, "xussr"}, 645 {australia, "australia"}, 646 {france, "france"}, 647 648}; 649 650#define TBL_CHNL freqTable[ bktr->tuner.chnlset ].ptr[ x ] 651#define TBL_BASE_FREQ freqTable[ bktr->tuner.chnlset ].ptr[ x + 1 ] 652#define TBL_OFFSET freqTable[ bktr->tuner.chnlset ].ptr[ x + 2 ] 653static int 654frequency_lookup( bktr_ptr_t bktr, int channel ) 655{ 656 int x; 657 658 /* check for "> MAX channel" */ 659 x = 0; 660 if ( channel > TBL_CHNL ) 661 return( -1 ); 662 663 /* search the table for data */ 664 for ( x = 3; TBL_CHNL; x += 3 ) { 665 if ( channel >= TBL_CHNL ) { 666 return( TBL_BASE_FREQ + 667 ((channel - TBL_CHNL) * TBL_OFFSET) ); 668 } 669 } 670 671 /* not found, must be below the MIN channel */ 672 return( -1 ); 673} 674#undef TBL_OFFSET 675#undef TBL_BASE_FREQ 676#undef TBL_CHNL 677 678 679#define TBL_IF freqTable[ bktr->tuner.chnlset ].ptr[ 1 ] 680 681 682/* Initialise the tuner structures in the bktr_softc */ 683/* This is needed as the tuner details are no longer globally declared */ 684 685void select_tuner( bktr_ptr_t bktr, int tuner_type ) { 686 if (tuner_type < Bt848_MAX_TUNER) { 687 bktr->card.tuner = &tuners[ tuner_type ]; 688 } else { 689 bktr->card.tuner = NULL; 690 } 691} 692 693/* 694 * Tuner Notes: 695 * Programming the tuner properly is quite complicated. 696 * Here are some notes, based on a FM1246 data sheet for a PAL-I tuner. 697 * The tuner (front end) covers 45.75 Mhz - 855.25 Mhz and an FM band of 698 * 87.5 Mhz to 108.0 Mhz. 699 * 700 * RF and IF. RF = radio frequencies, it is the transmitted signal. 701 * IF is the Intermediate Frequency (the offset from the base 702 * signal where the video, color, audio and NICAM signals are. 703 * 704 * Eg, Picture at 38.9 Mhz, Colour at 34.47 MHz, sound at 32.9 MHz 705 * NICAM at 32.348 Mhz. 706 * Strangely enough, there is an IF (intermediate frequency) for 707 * FM Radio which is 10.7 Mhz. 708 * 709 * The tuner also works in Bands. Philips bands are 710 * FM radio band 87.50 to 108.00 MHz 711 * Low band 45.75 to 170.00 MHz 712 * Mid band 170.00 to 450.00 MHz 713 * High band 450.00 to 855.25 MHz 714 * 715 * 716 * Now we need to set the PLL on the tuner to the required freuqncy. 717 * It has a programmable divisor. 718 * For TV we want 719 * N = 16 (freq RF(pc) + freq IF(pc)) pc is picture carrier and RF and IF 720 * are in MHz. 721 722 * For RADIO we want a different equation. 723 * freq IF is 10.70 MHz (so the data sheet tells me) 724 * N = (freq RF + freq IF) / step size 725 * The step size must be set to 50 khz (so the data sheet tells me) 726 * (note this is 50 kHz, the other things are in MHz) 727 * so we end up with N = 20x(freq RF + 10.7) 728 * 729 */ 730 731#define LOW_BAND 0 732#define MID_BAND 1 733#define HIGH_BAND 2 734#define FM_RADIO_BAND 3 735 736 737/* Check if these are correct for other than Philips PAL */ 738#define STATUSBIT_COLD 0x80 739#define STATUSBIT_LOCK 0x40 740#define STATUSBIT_TV 0x20 741#define STATUSBIT_STEREO 0x10 /* valid if FM (aka not TV) */ 742#define STATUSBIT_ADC 0x07 743 744/* 745 * set the frequency of the tuner 746 * If 'type' is TV_FREQUENCY, the frequency is freq MHz*16 747 * If 'type' is FM_RADIO_FREQUENCY, the frequency is freq MHz * 100 748 * (note *16 gives is 4 bits of fraction, eg steps of nnn.0625) 749 * 750 */ 751int 752tv_freq( bktr_ptr_t bktr, int frequency, int type ) 753{ 754 const struct TUNER* tuner; 755 u_char addr; 756 u_char control; 757 u_char band; 758 int N; 759 int band_select = 0; 760#if defined( TEST_TUNER_AFC ) 761 int oldFrequency, afcDelta; 762#endif 763 764 tuner = bktr->card.tuner; 765 if ( tuner == NULL ) 766 return( -1 ); 767 768 if (type == TV_FREQUENCY) { 769 /* 770 * select the band based on frequency 771 * XXX FIXME: get the cross-over points from the tuner struct 772 */ 773 if ( frequency < (160 * FREQFACTOR ) ) 774 band_select = LOW_BAND; 775 else if ( frequency < (454 * FREQFACTOR ) ) 776 band_select = MID_BAND; 777 else 778 band_select = HIGH_BAND; 779 780#if defined( TEST_TUNER_AFC ) 781 if ( bktr->tuner.afc ) 782 frequency -= 4; 783#endif 784 /* 785 * N = 16 * { fRF(pc) + fIF(pc) } 786 * or N = 16* fRF(pc) + 16*fIF(pc) } 787 * where: 788 * pc is picture carrier, fRF & fIF are in MHz 789 * 790 * fortunatly, frequency is passed in as MHz * 16 791 * and the TBL_IF frequency is also stored in MHz * 16 792 */ 793 N = frequency + TBL_IF; 794 795 /* set the address of the PLL */ 796 addr = bktr->card.tuner_pllAddr; 797 control = tuner->pllControl[ band_select ]; 798 band = tuner->bandAddrs[ band_select ]; 799 800 if(!(band && control)) /* Don't try to set un- */ 801 return(-1); /* supported modes. */ 802 803 if ( frequency > bktr->tuner.frequency ) { 804 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff ); 805 i2cWrite( bktr, addr, control, band ); 806 } 807 else { 808 i2cWrite( bktr, addr, control, band ); 809 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff ); 810 } 811 812#if defined( TUNER_AFC ) 813 if ( bktr->tuner.afc == TRUE ) { 814#if defined( TEST_TUNER_AFC ) 815 oldFrequency = frequency; 816#endif 817 if ( (N = do_afc( bktr, addr, N )) < 0 ) { 818 /* AFC failed, restore requested frequency */ 819 N = frequency + TBL_IF; 820#if defined( TEST_TUNER_AFC ) 821 printf("do_afc: failed to lock\n"); 822#endif 823 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff ); 824 } 825 else 826 frequency = N - TBL_IF; 827#if defined( TEST_TUNER_AFC ) 828 printf("do_afc: returned freq %d (%d %% %d)\n", frequency, frequency / 16, frequency % 16); 829 afcDelta = frequency - oldFrequency; 830 printf("changed by: %d clicks (%d mod %d)\n", afcDelta, afcDelta / 16, afcDelta % 16); 831#endif 832 } 833#endif /* TUNER_AFC */ 834 835 bktr->tuner.frequency = frequency; 836 } 837 838 if ( type == FM_RADIO_FREQUENCY ) { 839 band_select = FM_RADIO_BAND; 840 841 /* 842 * N = { fRF(pc) + fIF(pc) }/step_size 843 * The step size is 50kHz for FM radio. 844 * (eg after 102.35MHz comes 102.40 MHz) 845 * fIF is 10.7 MHz (as detailed in the specs) 846 * 847 * frequency is passed in as MHz * 100 848 * 849 * So, we have N = (frequency/100 + 10.70) /(50/1000) 850 */ 851 N = (frequency + 1070)/5; 852 853 /* set the address of the PLL */ 854 addr = bktr->card.tuner_pllAddr; 855 control = tuner->pllControl[ band_select ]; 856 band = tuner->bandAddrs[ band_select ]; 857 858 if(!(band && control)) /* Don't try to set un- */ 859 return(-1); /* supported modes. */ 860 861 band |= bktr->tuner.radio_mode; /* tuner.radio_mode is set in 862 * the ioctls RADIO_SETMODE 863 * and RADIO_GETMODE */ 864 865 i2cWrite( bktr, addr, control, band ); 866 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff ); 867 868 bktr->tuner.frequency = (N * 5) - 1070; 869 870 871 } 872 873 874 return( 0 ); 875} 876 877 878 879#if defined( TUNER_AFC ) 880/* 881 * 882 */ 883int 884do_afc( bktr_ptr_t bktr, int addr, int frequency ) 885{ 886 int step; 887 int status; 888 int origFrequency; 889 890 origFrequency = frequency; 891 892 /* wait for first setting to take effect */ 893 tsleep( BKTR_SLEEP, PZERO, "tuning", hz/8 ); 894 895 if ( (status = i2cRead( bktr, addr + 1 )) < 0 ) 896 return( -1 ); 897 898#if defined( TEST_TUNER_AFC ) 899 printf( "\nOriginal freq: %d, status: 0x%02x\n", frequency, status ); 900#endif 901 for ( step = 0; step < AFC_MAX_STEP; ++step ) { 902 if ( (status = i2cRead( bktr, addr + 1 )) < 0 ) 903 goto fubar; 904 if ( !(status & 0x40) ) { 905#if defined( TEST_TUNER_AFC ) 906 printf( "no lock!\n" ); 907#endif 908 goto fubar; 909 } 910 911 switch( status & AFC_BITS ) { 912 case AFC_FREQ_CENTERED: 913#if defined( TEST_TUNER_AFC ) 914 printf( "Centered, freq: %d, status: 0x%02x\n", frequency, status ); 915#endif 916 return( frequency ); 917 918 case AFC_FREQ_MINUS_125: 919 case AFC_FREQ_MINUS_62: 920#if defined( TEST_TUNER_AFC ) 921 printf( "Low, freq: %d, status: 0x%02x\n", frequency, status ); 922#endif 923 --frequency; 924 break; 925 926 case AFC_FREQ_PLUS_62: 927 case AFC_FREQ_PLUS_125: 928#if defined( TEST_TUNER_AFC ) 929 printf( "Hi, freq: %d, status: 0x%02x\n", frequency, status ); 930#endif 931 ++frequency; 932 break; 933 } 934 935 i2cWrite( bktr, addr, 936 (frequency>>8) & 0x7f, frequency & 0xff ); 937 DELAY( AFC_DELAY ); 938 } 939 940 fubar: 941 i2cWrite( bktr, addr, 942 (origFrequency>>8) & 0x7f, origFrequency & 0xff ); 943 944 return( -1 ); 945} 946#endif /* TUNER_AFC */ 947#undef TBL_IF 948 949 950/* 951 * Get the Tuner status and signal strength 952 */ 953int get_tuner_status( bktr_ptr_t bktr ) { 954 return i2cRead( bktr, bktr->card.tuner_pllAddr + 1 ); 955} 956 957/* 958 * set the channel of the tuner 959 */ 960int 961tv_channel( bktr_ptr_t bktr, int channel ) 962{ 963 int frequency; 964 965 /* calculate the frequency according to tuner type */ 966 if ( (frequency = frequency_lookup( bktr, channel )) < 0 ) 967 return( -1 ); 968 969 /* set the new frequency */ 970 if ( tv_freq( bktr, frequency, TV_FREQUENCY ) < 0 ) 971 return( -1 ); 972 973 /* OK to update records */ 974 return( (bktr->tuner.channel = channel) ); 975} 976 977/* 978 * get channelset name 979 */ 980int 981tuner_getchnlset(struct bktr_chnlset *chnlset) 982{ 983 if (( chnlset->index < CHNLSET_MIN ) || 984 ( chnlset->index > CHNLSET_MAX )) 985 return( EINVAL ); 986 987 memcpy(&chnlset->name, &freqTable[chnlset->index].name, 988 BT848_MAX_CHNLSET_NAME_LEN); 989 990 chnlset->max_channel=freqTable[chnlset->index].ptr[0]; 991 return( 0 ); 992} 993