1 /* $OpenBSD: bktr_tuner.c,v 1.10 2022/01/09 05:42:58 jsg Exp $ */ 2 /* $FreeBSD: src/sys/dev/bktr/bktr_tuner.c,v 1.9 2000/10/19 07:33:28 roger Exp $ */ 3 4 /* 5 * This is part of the Driver for Video Capture Cards (Frame grabbers) 6 * and TV Tuner cards using the Brooktree Bt848, Bt848A, Bt849A, Bt878, Bt879 7 * chipset. 8 * Copyright Roger Hardiman and Amancio Hasty. 9 * 10 * bktr_tuner : This deals with controlling the tuner fitted to TV cards. 11 * 12 */ 13 14 /* 15 * 1. Redistributions of source code must retain the 16 * Copyright (c) 1997 Amancio Hasty, 1999 Roger Hardiman 17 * All rights reserved. 18 * 19 * Redistribution and use in source and binary forms, with or without 20 * modification, are permitted provided that the following conditions 21 * are met: 22 * 1. Redistributions of source code must retain the above copyright 23 * notice, this list of conditions and the following disclaimer. 24 * 2. Redistributions in binary form must reproduce the above copyright 25 * notice, this list of conditions and the following disclaimer in the 26 * documentation and/or other materials provided with the distribution. 27 * 3. All advertising materials mentioning features or use of this software 28 * must display the following acknowledgement: 29 * This product includes software developed by Amancio Hasty and 30 * Roger Hardiman 31 * 4. The name of the author may not be used to endorse or promote products 32 * derived from this software without specific prior written permission. 33 * 34 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 35 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 36 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 37 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 38 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 39 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 40 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 41 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 42 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 43 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 44 * POSSIBILITY OF SUCH DAMAGE. 45 */ 46 47 48 49 #include <sys/param.h> 50 #include <sys/systm.h> 51 #include <sys/kernel.h> 52 #include <sys/vnode.h> 53 54 #include <dev/ic/bt8xx.h> /* OpenBSD .h file location */ 55 #include <dev/pci/bktr/bktr_reg.h> 56 #include <dev/pci/bktr/bktr_tuner.h> 57 #include <dev/pci/bktr/bktr_core.h> 58 59 #if defined( TUNER_AFC ) 60 #define AFC_DELAY 10000 /* 10 millisecond delay */ 61 #define AFC_BITS 0x07 62 #define AFC_FREQ_MINUS_125 0x00 63 #define AFC_FREQ_MINUS_62 0x01 64 #define AFC_FREQ_CENTERED 0x02 65 #define AFC_FREQ_PLUS_62 0x03 66 #define AFC_FREQ_PLUS_125 0x04 67 #define AFC_MAX_STEP (5 * FREQFACTOR) /* no more than 5 MHz */ 68 #endif /* TUNER_AFC */ 69 70 71 #define TTYPE_XXX 0 72 #define TTYPE_NTSC 1 73 #define TTYPE_NTSC_J 2 74 #define TTYPE_PAL 3 75 #define TTYPE_PAL_M 4 76 #define TTYPE_PAL_N 5 77 #define TTYPE_SECAM 6 78 79 #define TSA552x_CB_MSB (0x80) 80 #define TSA552x_CB_CP (1<<6) /* set this for fast tuning */ 81 #define TSA552x_CB_T2 (1<<5) /* test mode - Normally set to 0 */ 82 #define TSA552x_CB_T1 (1<<4) /* test mode - Normally set to 0 */ 83 #define TSA552x_CB_T0 (1<<3) /* test mode - Normally set to 1 */ 84 #define TSA552x_CB_RSA (1<<2) /* 0 for 31.25 khz, 1 for 62.5 kHz */ 85 #define TSA552x_CB_RSB (1<<1) /* 0 for FM 50kHz steps, 1 = Use RSA*/ 86 #define TSA552x_CB_OS (1<<0) /* Set to 0 for normal operation */ 87 88 #define TSA552x_RADIO (TSA552x_CB_MSB | \ 89 TSA552x_CB_T0) 90 91 /* raise the charge pump voltage for fast tuning */ 92 #define TSA552x_FCONTROL (TSA552x_CB_MSB | \ 93 TSA552x_CB_CP | \ 94 TSA552x_CB_T0 | \ 95 TSA552x_CB_RSA | \ 96 TSA552x_CB_RSB) 97 98 /* lower the charge pump voltage for better residual oscillator FM */ 99 #define TSA552x_SCONTROL (TSA552x_CB_MSB | \ 100 TSA552x_CB_T0 | \ 101 TSA552x_CB_RSA | \ 102 TSA552x_CB_RSB) 103 104 /* The control value for the ALPS TSCH5 Tuner */ 105 #define TSCH5_FCONTROL 0x82 106 #define TSCH5_RADIO 0x86 107 108 /* The control value for the ALPS TSBH1 Tuner */ 109 #define TSBH1_FCONTROL 0xce 110 111 112 static const struct TUNER tuners[] = { 113 /* XXX FIXME: fill in the band-switch crosspoints */ 114 /* NO_TUNER */ 115 { "<no>", /* the 'name' */ 116 TTYPE_XXX, /* input type */ 117 { 0x00, /* control byte for Tuner PLL */ 118 0x00, 119 0x00, 120 0x00 }, 121 { 0x00, 0x00 }, /* band-switch crosspoints */ 122 { 0x00, 0x00, 0x00,0x00} }, /* the band-switch values */ 123 124 /* TEMIC_NTSC */ 125 { "Temic NTSC", /* the 'name' */ 126 TTYPE_NTSC, /* input type */ 127 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 128 TSA552x_SCONTROL, 129 TSA552x_SCONTROL, 130 0x00 }, 131 { 0x00, 0x00}, /* band-switch crosspoints */ 132 { 0x02, 0x04, 0x01, 0x00 } }, /* the band-switch values */ 133 134 /* TEMIC_PAL */ 135 { "Temic PAL", /* the 'name' */ 136 TTYPE_PAL, /* input type */ 137 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 138 TSA552x_SCONTROL, 139 TSA552x_SCONTROL, 140 0x00 }, 141 { 0x00, 0x00 }, /* band-switch crosspoints */ 142 { 0x02, 0x04, 0x01, 0x00 } }, /* the band-switch values */ 143 144 /* TEMIC_SECAM */ 145 { "Temic SECAM", /* the 'name' */ 146 TTYPE_SECAM, /* input type */ 147 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 148 TSA552x_SCONTROL, 149 TSA552x_SCONTROL, 150 0x00 }, 151 { 0x00, 0x00 }, /* band-switch crosspoints */ 152 { 0x02, 0x04, 0x01,0x00 } }, /* the band-switch values */ 153 154 /* PHILIPS_NTSC */ 155 { "Philips NTSC", /* the 'name' */ 156 TTYPE_NTSC, /* input type */ 157 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 158 TSA552x_SCONTROL, 159 TSA552x_SCONTROL, 160 0x00 }, 161 { 0x00, 0x00 }, /* band-switch crosspoints */ 162 { 0xa0, 0x90, 0x30, 0x00 } }, /* the band-switch values */ 163 164 /* PHILIPS_PAL */ 165 { "Philips PAL", /* the 'name' */ 166 TTYPE_PAL, /* input type */ 167 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 168 TSA552x_SCONTROL, 169 TSA552x_SCONTROL, 170 0x00 }, 171 { 0x00, 0x00 }, /* band-switch crosspoints */ 172 { 0xa0, 0x90, 0x30, 0x00 } }, /* the band-switch values */ 173 174 /* PHILIPS_SECAM */ 175 { "Philips SECAM", /* the 'name' */ 176 TTYPE_SECAM, /* input type */ 177 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 178 TSA552x_SCONTROL, 179 TSA552x_SCONTROL, 180 0x00 }, 181 { 0x00, 0x00 }, /* band-switch crosspoints */ 182 { 0xa7, 0x97, 0x37, 0x00 } }, /* the band-switch values */ 183 184 /* TEMIC_PAL I */ 185 { "Temic PAL I", /* the 'name' */ 186 TTYPE_PAL, /* input type */ 187 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 188 TSA552x_SCONTROL, 189 TSA552x_SCONTROL, 190 0x00 }, 191 { 0x00, 0x00 }, /* band-switch crosspoints */ 192 { 0x02, 0x04, 0x01,0x00 } }, /* the band-switch values */ 193 194 /* PHILIPS_PALI */ 195 { "Philips PAL I", /* the 'name' */ 196 TTYPE_PAL, /* input type */ 197 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 198 TSA552x_SCONTROL, 199 TSA552x_SCONTROL, 200 0x00 }, 201 { 0x00, 0x00 }, /* band-switch crosspoints */ 202 { 0xa0, 0x90, 0x30,0x00 } }, /* the band-switch values */ 203 204 /* PHILIPS_FR1236_NTSC */ 205 { "Philips FR1236 NTSC FM", /* the 'name' */ 206 TTYPE_NTSC, /* input type */ 207 { TSA552x_FCONTROL, /* control byte for Tuner PLL */ 208 TSA552x_FCONTROL, 209 TSA552x_FCONTROL, 210 TSA552x_RADIO }, 211 { 0x00, 0x00 }, /* band-switch crosspoints */ 212 { 0xa0, 0x90, 0x30,0xa4 } }, /* the band-switch values */ 213 214 /* PHILIPS_FR1216_PAL */ 215 { "Philips FR1216 PAL FM" , /* the 'name' */ 216 TTYPE_PAL, /* input type */ 217 { TSA552x_FCONTROL, /* control byte for Tuner PLL */ 218 TSA552x_FCONTROL, 219 TSA552x_FCONTROL, 220 TSA552x_RADIO }, 221 { 0x00, 0x00 }, /* band-switch crosspoints */ 222 { 0xa0, 0x90, 0x30, 0xa4 } }, /* the band-switch values */ 223 224 /* PHILIPS_FR1236_SECAM */ 225 { "Philips FR1236 SECAM FM", /* the 'name' */ 226 TTYPE_SECAM, /* input type */ 227 { TSA552x_FCONTROL, /* control byte for Tuner PLL */ 228 TSA552x_FCONTROL, 229 TSA552x_FCONTROL, 230 TSA552x_RADIO }, 231 { 0x00, 0x00 }, /* band-switch crosspoints */ 232 { 0xa7, 0x97, 0x37, 0xa4 } }, /* the band-switch values */ 233 234 /* ALPS TSCH5 NTSC */ 235 { "ALPS TSCH5 NTSC FM", /* the 'name' */ 236 TTYPE_NTSC, /* input type */ 237 { TSCH5_FCONTROL, /* control byte for Tuner PLL */ 238 TSCH5_FCONTROL, 239 TSCH5_FCONTROL, 240 TSCH5_RADIO }, 241 { 0x00, 0x00 }, /* band-switch crosspoints */ 242 { 0x14, 0x12, 0x11, 0x04 } }, /* the band-switch values */ 243 244 /* ALPS TSBH1 NTSC */ 245 { "ALPS TSBH1 NTSC", /* the 'name' */ 246 TTYPE_NTSC, /* input type */ 247 { TSBH1_FCONTROL, /* control byte for Tuner PLL */ 248 TSBH1_FCONTROL, 249 TSBH1_FCONTROL, 250 0x00 }, 251 { 0x00, 0x00 }, /* band-switch crosspoints */ 252 { 0x01, 0x02, 0x08, 0x00 } }, /* the band-switch values */ 253 254 /* Tivision TVF5533-MF NTSC */ 255 { "Tivision TVF5533-MF NTSC", /* the 'name' */ 256 TTYPE_NTSC, /* input 'type' */ 257 { TSBH1_FCONTROL, /* ctr byte for Tuner PLL */ 258 TSBH1_FCONTROL, 259 TSBH1_FCONTROL, 260 0x00 }, 261 { 0x00, 0x00 }, /* band-switch crosspoints */ 262 { 0x01, 0x02, 0x04, 0x00 } }, /* the band-switch values */ 263 }; 264 265 266 /* scaling factor for frequencies expressed as ints */ 267 #define FREQFACTOR 16 268 269 /* 270 * Format: 271 * entry 0: MAX legal channel 272 * entry 1: IF frequency 273 * expressed as fi{mHz} * 16, 274 * eg 45.75mHz == 45.75 * 16 = 732 275 * entry 2: [place holder/future] 276 * entry 3: base of channel record 0 277 * entry 3 + (x*3): base of channel record 'x' 278 * entry LAST: NULL channel entry marking end of records 279 * 280 * Record: 281 * int 0: base channel 282 * int 1: frequency of base channel, 283 * expressed as fb{mHz} * 16, 284 * int 2: offset frequency between channels, 285 * expressed as fo{mHz} * 16, 286 */ 287 288 /* 289 * North American Broadcast Channels: 290 * 291 * 2: 55.25 mHz - 4: 67.25 mHz 292 * 5: 77.25 mHz - 6: 83.25 mHz 293 * 7: 175.25 mHz - 13: 211.25 mHz 294 * 14: 471.25 mHz - 83: 885.25 mHz 295 * 296 * IF freq: 45.75 mHz 297 */ 298 #define OFFSET 6.00 299 static const int nabcst[] = { 300 83, (int)( 45.75 * FREQFACTOR), 0, 301 14, (int)(471.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 302 7, (int)(175.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 303 5, (int)( 77.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 304 2, (int)( 55.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 305 0 306 }; 307 #undef OFFSET 308 309 /* 310 * North American Cable Channels, IRC: 311 * 312 * 2: 55.25 mHz - 4: 67.25 mHz 313 * 5: 77.25 mHz - 6: 83.25 mHz 314 * 7: 175.25 mHz - 13: 211.25 mHz 315 * 14: 121.25 mHz - 22: 169.25 mHz 316 * 23: 217.25 mHz - 94: 643.25 mHz 317 * 95: 91.25 mHz - 99: 115.25 mHz 318 * 319 * IF freq: 45.75 mHz 320 */ 321 #define OFFSET 6.00 322 static const int irccable[] = { 323 116, (int)( 45.75 * FREQFACTOR), 0, 324 100, (int)(649.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 325 95, (int)( 91.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 326 23, (int)(217.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 327 14, (int)(121.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 328 7, (int)(175.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 329 5, (int)( 77.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 330 2, (int)( 55.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 331 0 332 }; 333 #undef OFFSET 334 335 /* 336 * North American Cable Channels, HRC: 337 * 338 * 2: 54 mHz - 4: 66 mHz 339 * 5: 78 mHz - 6: 84 mHz 340 * 7: 174 mHz - 13: 210 mHz 341 * 14: 120 mHz - 22: 168 mHz 342 * 23: 216 mHz - 94: 642 mHz 343 * 95: 90 mHz - 99: 114 mHz 344 * 345 * IF freq: 45.75 mHz 346 */ 347 #define OFFSET 6.00 348 static const int hrccable[] = { 349 116, (int)( 45.75 * FREQFACTOR), 0, 350 100, (int)(648.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 351 95, (int)( 90.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 352 23, (int)(216.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 353 14, (int)(120.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 354 7, (int)(174.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 355 5, (int)( 78.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 356 2, (int)( 54.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 357 0 358 }; 359 #undef OFFSET 360 361 /* 362 * Western European broadcast channels: 363 * 364 * (there are others that appear to vary between countries - rmt) 365 * 366 * here's the table Philips provides: 367 * caution, some of the offsets don't compute... 368 * 369 * 1 4525 700 N21 370 * 371 * 2 4825 700 E2 372 * 3 5525 700 E3 373 * 4 6225 700 E4 374 * 375 * 5 17525 700 E5 376 * 6 18225 700 E6 377 * 7 18925 700 E7 378 * 8 19625 700 E8 379 * 9 20325 700 E9 380 * 10 21025 700 E10 381 * 11 21725 700 E11 382 * 12 22425 700 E12 383 * 384 * 13 5375 700 ITA 385 * 14 6225 700 ITB 386 * 387 * 15 8225 700 ITC 388 * 389 * 16 17525 700 ITD 390 * 17 18325 700 ITE 391 * 392 * 18 19225 700 ITF 393 * 19 20125 700 ITG 394 * 20 21025 700 ITH 395 * 396 * 21 47125 800 E21 397 * 22 47925 800 E22 398 * 23 48725 800 E23 399 * 24 49525 800 E24 400 * 25 50325 800 E25 401 * 26 51125 800 E26 402 * 27 51925 800 E27 403 * 28 52725 800 E28 404 * 29 53525 800 E29 405 * 30 54325 800 E30 406 * 31 55125 800 E31 407 * 32 55925 800 E32 408 * 33 56725 800 E33 409 * 34 57525 800 E34 410 * 35 58325 800 E35 411 * 36 59125 800 E36 412 * 37 59925 800 E37 413 * 38 60725 800 E38 414 * 39 61525 800 E39 415 * 40 62325 800 E40 416 * 41 63125 800 E41 417 * 42 63925 800 E42 418 * 43 64725 800 E43 419 * 44 65525 800 E44 420 * 45 66325 800 E45 421 * 46 67125 800 E46 422 * 47 67925 800 E47 423 * 48 68725 800 E48 424 * 49 69525 800 E49 425 * 50 70325 800 E50 426 * 51 71125 800 E51 427 * 52 71925 800 E52 428 * 53 72725 800 E53 429 * 54 73525 800 E54 430 * 55 74325 800 E55 431 * 56 75125 800 E56 432 * 57 75925 800 E57 433 * 58 76725 800 E58 434 * 59 77525 800 E59 435 * 60 78325 800 E60 436 * 61 79125 800 E61 437 * 62 79925 800 E62 438 * 63 80725 800 E63 439 * 64 81525 800 E64 440 * 65 82325 800 E65 441 * 66 83125 800 E66 442 * 67 83925 800 E67 443 * 68 84725 800 E68 444 * 69 85525 800 E69 445 * 446 * 70 4575 800 IA 447 * 71 5375 800 IB 448 * 72 6175 800 IC 449 * 450 * 74 6925 700 S01 451 * 75 7625 700 S02 452 * 76 8325 700 S03 453 * 454 * 80 10525 700 S1 455 * 81 11225 700 S2 456 * 82 11925 700 S3 457 * 83 12625 700 S4 458 * 84 13325 700 S5 459 * 85 14025 700 S6 460 * 86 14725 700 S7 461 * 87 15425 700 S8 462 * 88 16125 700 S9 463 * 89 16825 700 S10 464 * 90 23125 700 S11 465 * 91 23825 700 S12 466 * 92 24525 700 S13 467 * 93 25225 700 S14 468 * 94 25925 700 S15 469 * 95 26625 700 S16 470 * 96 27325 700 S17 471 * 97 28025 700 S18 472 * 98 28725 700 S19 473 * 99 29425 700 S20 474 * 475 * 476 * Channels S21 - S41 are taken from 477 * http://gemma.apple.com:80/dev/technotes/tn/tn1012.html 478 * 479 * 100 30325 800 S21 480 * 101 31125 800 S22 481 * 102 31925 800 S23 482 * 103 32725 800 S24 483 * 104 33525 800 S25 484 * 105 34325 800 S26 485 * 106 35125 800 S27 486 * 107 35925 800 S28 487 * 108 36725 800 S29 488 * 109 37525 800 S30 489 * 110 38325 800 S31 490 * 111 39125 800 S32 491 * 112 39925 800 S33 492 * 113 40725 800 S34 493 * 114 41525 800 S35 494 * 115 42325 800 S36 495 * 116 43125 800 S37 496 * 117 43925 800 S38 497 * 118 44725 800 S39 498 * 119 45525 800 S40 499 * 120 46325 800 S41 500 * 501 * 121 3890 000 IFFREQ 502 * 503 */ 504 static const int weurope[] = { 505 121, (int)( 38.90 * FREQFACTOR), 0, 506 100, (int)(303.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 507 90, (int)(231.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR), 508 80, (int)(105.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR), 509 74, (int)( 69.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR), 510 21, (int)(471.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 511 17, (int)(183.25 * FREQFACTOR), (int)(9.00 * FREQFACTOR), 512 16, (int)(175.25 * FREQFACTOR), (int)(9.00 * FREQFACTOR), 513 15, (int)(82.25 * FREQFACTOR), (int)(8.50 * FREQFACTOR), 514 13, (int)(53.75 * FREQFACTOR), (int)(8.50 * FREQFACTOR), 515 5, (int)(175.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR), 516 2, (int)(48.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR), 517 0 518 }; 519 520 /* 521 * Japanese Broadcast Channels: 522 * 523 * 1: 91.25MHz - 3: 103.25MHz 524 * 4: 171.25MHz - 7: 189.25MHz 525 * 8: 193.25MHz - 12: 217.25MHz (VHF) 526 * 13: 471.25MHz - 62: 765.25MHz (UHF) 527 * 528 * IF freq: 45.75 mHz 529 * OR 530 * IF freq: 58.75 mHz 531 */ 532 #define OFFSET 6.00 533 #define IF_FREQ 45.75 534 static const int jpnbcst[] = { 535 62, (int)(IF_FREQ * FREQFACTOR), 0, 536 13, (int)(471.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 537 8, (int)(193.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 538 4, (int)(171.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 539 1, (int)( 91.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 540 0 541 }; 542 #undef IF_FREQ 543 #undef OFFSET 544 545 /* 546 * Japanese Cable Channels: 547 * 548 * 1: 91.25MHz - 3: 103.25MHz 549 * 4: 171.25MHz - 7: 189.25MHz 550 * 8: 193.25MHz - 12: 217.25MHz 551 * 13: 109.25MHz - 21: 157.25MHz 552 * 22: 165.25MHz 553 * 23: 223.25MHz - 63: 463.25MHz 554 * 555 * IF freq: 45.75 mHz 556 */ 557 #define OFFSET 6.00 558 #define IF_FREQ 45.75 559 static const int jpncable[] = { 560 63, (int)(IF_FREQ * FREQFACTOR), 0, 561 23, (int)(223.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 562 22, (int)(165.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 563 13, (int)(109.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 564 8, (int)(193.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 565 4, (int)(171.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 566 1, (int)( 91.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 567 0 568 }; 569 #undef IF_FREQ 570 #undef OFFSET 571 572 /* 573 * xUSSR Broadcast Channels: 574 * 575 * 1: 49.75MHz - 2: 59.25MHz 576 * 3: 77.25MHz - 5: 93.25MHz 577 * 6: 175.25MHz - 12: 223.25MHz 578 * 13-20 - not exist 579 * 21: 471.25MHz - 34: 575.25MHz 580 * 35: 583.25MHz - 69: 855.25MHz 581 * 582 * Cable channels 583 * 584 * 70: 111.25MHz - 77: 167.25MHz 585 * 78: 231.25MHz -107: 463.25MHz 586 * 587 * IF freq: 38.90 MHz 588 */ 589 #define IF_FREQ 38.90 590 static const int xussr[] = { 591 107, (int)(IF_FREQ * FREQFACTOR), 0, 592 78, (int)(231.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 593 70, (int)(111.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 594 35, (int)(583.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 595 21, (int)(471.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 596 6, (int)(175.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 597 3, (int)( 77.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 598 1, (int)( 49.75 * FREQFACTOR), (int)(9.50 * FREQFACTOR), 599 0 600 }; 601 #undef IF_FREQ 602 603 /* 604 * Australian broadcast channels 605 */ 606 #define OFFSET 7.00 607 #define IF_FREQ 38.90 608 static const int australia[] = { 609 83, (int)(IF_FREQ * FREQFACTOR), 0, 610 28, (int)(527.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 611 10, (int)(209.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 612 6, (int)(175.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 613 4, (int)( 95.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 614 3, (int)( 86.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 615 1, (int)( 57.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 616 0 617 }; 618 #undef OFFSET 619 #undef IF_FREQ 620 621 /* 622 * France broadcast channels 623 */ 624 #define OFFSET 8.00 625 #define IF_FREQ 38.90 626 static const int france[] = { 627 69, (int)(IF_FREQ * FREQFACTOR), 0, 628 21, (int)(471.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 21 -> 69 */ 629 5, (int)(176.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 5 -> 10 */ 630 4, (int)( 63.75 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 4 */ 631 3, (int)( 60.50 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 3 */ 632 1, (int)( 47.75 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 1 2 */ 633 0 634 }; 635 #undef OFFSET 636 #undef IF_FREQ 637 638 static const struct { 639 const int *ptr; 640 char name[BT848_MAX_CHNLSET_NAME_LEN]; 641 } freqTable[] = { 642 {NULL, ""}, 643 {nabcst, "nabcst"}, 644 {irccable, "cableirc"}, 645 {hrccable, "cablehrc"}, 646 {weurope, "weurope"}, 647 {jpnbcst, "jpnbcst"}, 648 {jpncable, "jpncable"}, 649 {xussr, "xussr"}, 650 {australia, "australia"}, 651 {france, "france"}, 652 653 }; 654 655 #define TBL_CHNL freqTable[ bktr->tuner.chnlset ].ptr[ x ] 656 #define TBL_BASE_FREQ freqTable[ bktr->tuner.chnlset ].ptr[ x + 1 ] 657 #define TBL_OFFSET freqTable[ bktr->tuner.chnlset ].ptr[ x + 2 ] 658 static int 659 frequency_lookup( bktr_ptr_t bktr, int channel ) 660 { 661 int x; 662 663 /* check for "> MAX channel" */ 664 x = 0; 665 if ( channel > TBL_CHNL ) 666 return( -1 ); 667 668 /* search the table for data */ 669 for ( x = 3; TBL_CHNL; x += 3 ) { 670 if ( channel >= TBL_CHNL ) { 671 return( TBL_BASE_FREQ + 672 ((channel - TBL_CHNL) * TBL_OFFSET) ); 673 } 674 } 675 676 /* not found, must be below the MIN channel */ 677 return( -1 ); 678 } 679 #undef TBL_OFFSET 680 #undef TBL_BASE_FREQ 681 #undef TBL_CHNL 682 683 684 #define TBL_IF freqTable[ bktr->tuner.chnlset ].ptr[ 1 ] 685 686 687 /* Initialise the tuner structures in the bktr_softc */ 688 /* This is needed as the tuner details are no longer globally declared */ 689 690 void select_tuner( bktr_ptr_t bktr, int tuner_type ) { 691 if (tuner_type < Bt848_MAX_TUNER) { 692 bktr->card.tuner = &tuners[ tuner_type ]; 693 } else { 694 bktr->card.tuner = NULL; 695 } 696 } 697 698 /* 699 * Tuner Notes: 700 * Programming the tuner properly is quite complicated. 701 * Here are some notes, based on a FM1246 data sheet for a PAL-I tuner. 702 * The tuner (front end) covers 45.75 MHz - 855.25 MHz and an FM band of 703 * 87.5 MHz to 108.0 MHz. 704 * 705 * RF and IF. RF = radio frequencies, it is the transmitted signal. 706 * IF is the Intermediate Frequency (the offset from the base 707 * signal where the video, color, audio and NICAM signals are. 708 * 709 * Eg, Picture at 38.9 MHz, Colour at 34.47 MHz, sound at 32.9 MHz 710 * NICAM at 32.348 MHz. 711 * Strangely enough, there is an IF (intermediate frequency) for 712 * FM Radio which is 10.7 MHz. 713 * 714 * The tuner also works in Bands. Philips bands are 715 * FM radio band 87.50 to 108.00 MHz 716 * Low band 45.75 to 170.00 MHz 717 * Mid band 170.00 to 450.00 MHz 718 * High band 450.00 to 855.25 MHz 719 * 720 * 721 * Now we need to set the PLL on the tuner to the required frequency. 722 * It has a programmable divisor. 723 * For TV we want 724 * N = 16 (freq RF(pc) + freq IF(pc)) pc is picture carrier and RF and IF 725 * are in MHz. 726 727 * For RADIO we want a different equation. 728 * freq IF is 10.70 MHz (so the data sheet tells me) 729 * N = (freq RF + freq IF) / step size 730 * The step size must be set to 50 khz (so the data sheet tells me) 731 * (note this is 50 kHz, the other things are in MHz) 732 * so we end up with N = 20x(freq RF + 10.7) 733 * 734 */ 735 736 #define LOW_BAND 0 737 #define MID_BAND 1 738 #define HIGH_BAND 2 739 #define FM_RADIO_BAND 3 740 741 742 /* Check if these are correct for other than Philips PAL */ 743 #define STATUSBIT_COLD 0x80 744 #define STATUSBIT_LOCK 0x40 745 #define STATUSBIT_TV 0x20 746 #define STATUSBIT_STEREO 0x10 /* valid if FM (aka not TV) */ 747 #define STATUSBIT_ADC 0x07 748 749 /* 750 * set the frequency of the tuner 751 * If 'type' is TV_FREQUENCY, the frequency is freq MHz*16 752 * If 'type' is FM_RADIO_FREQUENCY, the frequency is freq MHz * 100 753 * (note *16 gives is 4 bits of fraction, eg steps of nnn.0625) 754 * 755 */ 756 int 757 tv_freq( bktr_ptr_t bktr, int frequency, int type ) 758 { 759 const struct TUNER* tuner; 760 u_char addr; 761 u_char control; 762 u_char band; 763 int N; 764 int band_select = 0; 765 #if defined( TEST_TUNER_AFC ) 766 int oldFrequency, afcDelta; 767 #endif 768 769 tuner = bktr->card.tuner; 770 if ( tuner == NULL ) 771 return( -1 ); 772 773 if (type == TV_FREQUENCY) { 774 /* 775 * select the band based on frequency 776 * XXX FIXME: get the cross-over points from the tuner struct 777 */ 778 if ( frequency < (160 * FREQFACTOR ) ) 779 band_select = LOW_BAND; 780 else if ( frequency < (454 * FREQFACTOR ) ) 781 band_select = MID_BAND; 782 else 783 band_select = HIGH_BAND; 784 785 bktr->tuner.tuner_mode = BT848_TUNER_MODE_TV; 786 787 #if defined( TEST_TUNER_AFC ) 788 if ( bktr->tuner.afc ) 789 frequency -= 4; 790 #endif 791 /* 792 * N = 16 * { fRF(pc) + fIF(pc) } 793 * or N = 16* fRF(pc) + 16*fIF(pc) } 794 * where: 795 * pc is picture carrier, fRF & fIF are in MHz 796 * 797 * fortunately, frequency is passed in as MHz * 16 798 * and the TBL_IF frequency is also stored in MHz * 16 799 */ 800 N = frequency + TBL_IF; 801 802 /* set the address of the PLL */ 803 addr = bktr->card.tuner_pllAddr; 804 control = tuner->pllControl[ band_select ]; 805 band = tuner->bandAddrs[ band_select ]; 806 807 if(!(band && control)) /* Don't try to set un- */ 808 return(-1); /* supported modes. */ 809 810 if ( frequency > bktr->tuner.frequency ) { 811 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff ); 812 i2cWrite( bktr, addr, control, band ); 813 } 814 else { 815 i2cWrite( bktr, addr, control, band ); 816 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff ); 817 } 818 819 #if defined( TUNER_AFC ) 820 if ( bktr->tuner.afc == TRUE ) { 821 #if defined( TEST_TUNER_AFC ) 822 oldFrequency = frequency; 823 #endif 824 if ( (N = do_afc( bktr, addr, N )) < 0 ) { 825 /* AFC failed, restore requested frequency */ 826 N = frequency + TBL_IF; 827 #if defined( TEST_TUNER_AFC ) 828 printf("%s: do_afc: failed to lock\n", 829 bktr_name(bktr)); 830 #endif 831 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff ); 832 } 833 else 834 frequency = N - TBL_IF; 835 #if defined( TEST_TUNER_AFC ) 836 printf("%s: do_afc: returned freq %d (%d %% %d)\n", bktr_name(bktr), frequency, frequency / 16, frequency % 16); 837 afcDelta = frequency - oldFrequency; 838 printf("%s: changed by: %d clicks (%d mod %d)\n", bktr_name(bktr), afcDelta, afcDelta / 16, afcDelta % 16); 839 #endif 840 } 841 #endif /* TUNER_AFC */ 842 843 bktr->tuner.frequency = frequency; 844 } 845 846 if ( type == FM_RADIO_FREQUENCY ) { 847 band_select = FM_RADIO_BAND; 848 849 bktr->tuner.tuner_mode = BT848_TUNER_MODE_RADIO; 850 851 /* 852 * N = { fRF(pc) + fIF(pc) }/step_size 853 * The step size is 50kHz for FM radio. 854 * (eg after 102.35MHz comes 102.40 MHz) 855 * fIF is 10.7 MHz (as detailed in the specs) 856 * 857 * frequency is passed in as MHz * 100 858 * 859 * So, we have N = (frequency/100 + 10.70) /(50/1000) 860 */ 861 N = (frequency + 1070)/5; 862 863 /* set the address of the PLL */ 864 addr = bktr->card.tuner_pllAddr; 865 control = tuner->pllControl[ band_select ]; 866 band = tuner->bandAddrs[ band_select ]; 867 868 if(!(band && control)) /* Don't try to set un- */ 869 return(-1); /* supported modes. */ 870 871 band |= bktr->tuner.radio_mode; /* tuner.radio_mode is set in 872 * the ioctls RADIO_SETMODE 873 * and RADIO_GETMODE */ 874 875 i2cWrite( bktr, addr, control, band ); 876 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff ); 877 878 bktr->tuner.frequency = (N * 5) - 1070; 879 880 881 } 882 883 884 return( 0 ); 885 } 886 887 888 889 #if defined( TUNER_AFC ) 890 /* 891 * 892 */ 893 int 894 do_afc( bktr_ptr_t bktr, int addr, int frequency ) 895 { 896 int step; 897 int status; 898 int origFrequency; 899 900 origFrequency = frequency; 901 902 /* wait for first setting to take effect */ 903 tsleep_nsec( BKTR_SLEEP, PZERO, "tuning", MSEC_TO_NSEC(1000 / 8) ); 904 905 if ( (status = i2cRead( bktr, addr + 1 )) < 0 ) 906 return( -1 ); 907 908 #if defined( TEST_TUNER_AFC ) 909 printf( "%s: Original freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status ); 910 #endif 911 for ( step = 0; step < AFC_MAX_STEP; ++step ) { 912 if ( (status = i2cRead( bktr, addr + 1 )) < 0 ) 913 goto fubar; 914 if ( !(status & 0x40) ) { 915 #if defined( TEST_TUNER_AFC ) 916 printf( "%s: no lock!\n", bktr_name(bktr) ); 917 #endif 918 goto fubar; 919 } 920 921 switch( status & AFC_BITS ) { 922 case AFC_FREQ_CENTERED: 923 #if defined( TEST_TUNER_AFC ) 924 printf( "%s: Centered, freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status ); 925 #endif 926 return( frequency ); 927 928 case AFC_FREQ_MINUS_125: 929 case AFC_FREQ_MINUS_62: 930 #if defined( TEST_TUNER_AFC ) 931 printf( "%s: Low, freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status ); 932 #endif 933 --frequency; 934 break; 935 936 case AFC_FREQ_PLUS_62: 937 case AFC_FREQ_PLUS_125: 938 #if defined( TEST_TUNER_AFC ) 939 printf( "%s: Hi, freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status ); 940 #endif 941 ++frequency; 942 break; 943 } 944 945 i2cWrite( bktr, addr, 946 (frequency>>8) & 0x7f, frequency & 0xff ); 947 DELAY( AFC_DELAY ); 948 } 949 950 fubar: 951 i2cWrite( bktr, addr, 952 (origFrequency>>8) & 0x7f, origFrequency & 0xff ); 953 954 return( -1 ); 955 } 956 #endif /* TUNER_AFC */ 957 #undef TBL_IF 958 959 960 /* 961 * Get the Tuner status and signal strength 962 */ 963 int get_tuner_status( bktr_ptr_t bktr ) { 964 return i2cRead( bktr, bktr->card.tuner_pllAddr + 1 ); 965 } 966 967 /* 968 * set the channel of the tuner 969 */ 970 int 971 tv_channel( bktr_ptr_t bktr, int channel ) 972 { 973 int frequency; 974 975 /* calculate the frequency according to tuner type */ 976 if ( (frequency = frequency_lookup( bktr, channel )) < 0 ) 977 return( -1 ); 978 979 /* set the new frequency */ 980 if ( tv_freq( bktr, frequency, TV_FREQUENCY ) < 0 ) 981 return( -1 ); 982 983 /* OK to update records */ 984 return( (bktr->tuner.channel = channel) ); 985 } 986 987 /* 988 * get channelset name 989 */ 990 int 991 tuner_getchnlset(struct bktr_chnlset *chnlset) 992 { 993 if (( chnlset->index < CHNLSET_MIN ) || 994 ( chnlset->index > CHNLSET_MAX )) 995 return( EINVAL ); 996 997 memcpy(&chnlset->name, &freqTable[chnlset->index].name, 998 BT848_MAX_CHNLSET_NAME_LEN); 999 1000 chnlset->max_channel=freqTable[chnlset->index].ptr[0]; 1001 return( 0 ); 1002 } 1003