1 /* $Sourceforge: bktr_tuner.c,v 1.5 2003/03/13 22:21:04 emsi Exp $ */ 2 3 /* $NetBSD: bktr_tuner.c,v 1.13 2021/12/19 22:03:41 andvar Exp $ */ 4 /* $FreeBSD: src/sys/dev/bktr/bktr_tuner.c,v 1.9 2000/10/19 07:33:28 roger Exp$ */ 5 6 /* 7 * This is part of the Driver for Video Capture Cards (Frame grabbers) 8 * and TV Tuner cards using the Brooktree Bt848, Bt848A, Bt849A, Bt878, Bt879 9 * chipset. 10 * Copyright Roger Hardiman and Amancio Hasty. 11 * 12 * bktr_tuner : This deals with controlling the tuner fitted to TV cards. 13 * 14 */ 15 16 /* 17 * 1. Redistributions of source code must retain the 18 * Copyright (c) 1997 Amancio Hasty, 1999 Roger Hardiman 19 * All rights reserved. 20 * 21 * Redistribution and use in source and binary forms, with or without 22 * modification, are permitted provided that the following conditions 23 * are met: 24 * 1. Redistributions of source code must retain the above copyright 25 * notice, this list of conditions and the following disclaimer. 26 * 2. Redistributions in binary form must reproduce the above copyright 27 * notice, this list of conditions and the following disclaimer in the 28 * documentation and/or other materials provided with the distribution. 29 * 3. All advertising materials mentioning features or use of this software 30 * must display the following acknowledgement: 31 * This product includes software developed by Amancio Hasty and 32 * Roger Hardiman 33 * 4. The name of the author may not be used to endorse or promote products 34 * derived from this software without specific prior written permission. 35 * 36 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 37 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 38 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 39 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 40 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 41 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 42 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 43 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 44 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 45 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 46 * POSSIBILITY OF SUCH DAMAGE. 47 */ 48 49 #include <sys/cdefs.h> 50 __KERNEL_RCSID(0, "$NetBSD: bktr_tuner.c,v 1.13 2021/12/19 22:03:41 andvar Exp $"); 51 52 #include <sys/param.h> 53 #include <sys/systm.h> 54 #include <sys/kernel.h> 55 #include <sys/vnode.h> 56 #ifdef __NetBSD__ 57 #include <sys/proc.h> 58 #endif 59 60 #ifdef __FreeBSD__ 61 #include <pci/pcivar.h> 62 63 #if (__FreeBSD_version < 500000) 64 #include <machine/clock.h> /* for DELAY */ 65 #endif 66 67 #if (__FreeBSD_version >=300000) 68 #include <machine/bus_memio.h> /* for bus space */ 69 #include <sys/bus.h> 70 #include <sys/bus.h> 71 #endif 72 #endif 73 74 #ifdef __NetBSD__ 75 #include <dev/ic/bt8xx.h> /* NetBSD .h file location */ 76 #include <dev/pci/bktr/bktr_reg.h> 77 #include <dev/pci/bktr/bktr_tuner.h> 78 #include <dev/pci/bktr/bktr_card.h> 79 #include <dev/pci/bktr/bktr_core.h> 80 #else 81 #include <machine/ioctl_meteor.h> /* Traditional .h file location */ 82 #include <machine/ioctl_bt848.h> /* extensions to ioctl_meteor.h */ 83 #include <dev/bktr/bktr_reg.h> 84 #include <dev/bktr/bktr_tuner.h> 85 #include <dev/bktr/bktr_card.h> 86 #include <dev/bktr/bktr_core.h> 87 #endif 88 89 90 91 #if defined(TUNER_AFC) 92 #define AFC_DELAY 10000 /* 10 milliseconds delay */ 93 #define AFC_BITS 0x07 94 #define AFC_FREQ_MINUS_125 0x00 95 #define AFC_FREQ_MINUS_62 0x01 96 #define AFC_FREQ_CENTERED 0x02 97 #define AFC_FREQ_PLUS_62 0x03 98 #define AFC_FREQ_PLUS_125 0x04 99 #define AFC_MAX_STEP (5 * FREQFACTOR) /* no more than 5 MHz */ 100 #endif /* TUNER_AFC */ 101 102 103 #define TTYPE_XXX 0 104 #define TTYPE_NTSC 1 105 #define TTYPE_NTSC_J 2 106 #define TTYPE_PAL 3 107 #define TTYPE_PAL_M 4 108 #define TTYPE_PAL_N 5 109 #define TTYPE_SECAM 6 110 111 #define TSA552x_CB_MSB (0x80) 112 #define TSA552x_CB_CP (1<<6) /* set this for fast tuning */ 113 #define TSA552x_CB_T2 (1<<5) /* test mode - Normally set to 0 */ 114 #define TSA552x_CB_T1 (1<<4) /* test mode - Normally set to 0 */ 115 #define TSA552x_CB_T0 (1<<3) /* test mode - Normally set to 1 */ 116 #define TSA552x_CB_RSA (1<<2) /* 0 for 31.25 kHz, 1 for 62.5 kHz */ 117 #define TSA552x_CB_RSB (1<<1) /* 0 for FM 50kHz steps, 1 = Use RSA*/ 118 #define TSA552x_CB_OS (1<<0) /* Set to 0 for normal operation */ 119 120 #define TSA552x_RADIO (TSA552x_CB_MSB | \ 121 TSA552x_CB_T0) 122 123 /* raise the charge pump voltage for fast tuning */ 124 #define TSA552x_FCONTROL (TSA552x_CB_MSB | \ 125 TSA552x_CB_CP | \ 126 TSA552x_CB_T0 | \ 127 TSA552x_CB_RSA | \ 128 TSA552x_CB_RSB) 129 130 /* lower the charge pump voltage for better residual oscillator FM */ 131 #define TSA552x_SCONTROL (TSA552x_CB_MSB | \ 132 TSA552x_CB_T0 | \ 133 TSA552x_CB_RSA | \ 134 TSA552x_CB_RSB) 135 136 /* The control value for the ALPS TSCH5 Tuner */ 137 #define TSCH5_FCONTROL 0x82 138 #define TSCH5_RADIO 0x86 139 140 /* The control value for the ALPS TSBH1 Tuner */ 141 #define TSBH1_FCONTROL 0xce 142 143 144 static const struct TUNER tuners[] = { 145 /* XXX FIXME: fill in the band-switch crosspoints */ 146 /* NO_TUNER */ 147 { "<no>", /* the 'name' */ 148 TTYPE_XXX, /* input type */ 149 { 0x00, /* control byte for Tuner PLL */ 150 0x00, 151 0x00, 152 0x00 }, 153 { 160, 454 }, /* band-switch crosspoints */ 154 { 0x00, 0x00, 0x00,0x00} }, /* the band-switch values */ 155 156 /* TEMIC_NTSC */ 157 { "Temic NTSC", /* the 'name' */ 158 TTYPE_NTSC, /* input type */ 159 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 160 TSA552x_SCONTROL, 161 TSA552x_SCONTROL, 162 0x00 }, 163 { 160, 454 }, /* band-switch crosspoints */ 164 { 0x02, 0x04, 0x01, 0x00 } }, /* the band-switch values */ 165 166 /* TEMIC_PAL */ 167 { "Temic PAL", /* the 'name' */ 168 TTYPE_PAL, /* input type */ 169 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 170 TSA552x_SCONTROL, 171 TSA552x_SCONTROL, 172 0x00 }, 173 { 160, 454 }, /* band-switch crosspoints */ 174 { 0x02, 0x04, 0x01, 0x00 } }, /* the band-switch values */ 175 176 /* TEMIC_SECAM */ 177 { "Temic SECAM", /* the 'name' */ 178 TTYPE_SECAM, /* input type */ 179 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 180 TSA552x_SCONTROL, 181 TSA552x_SCONTROL, 182 0x00 }, 183 { 160, 454 }, /* band-switch crosspoints */ 184 { 0x02, 0x04, 0x01,0x00 } }, /* the band-switch values */ 185 186 /* PHILIPS_NTSC */ 187 { "Philips NTSC", /* the 'name' */ 188 TTYPE_NTSC, /* input type */ 189 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 190 TSA552x_SCONTROL, 191 TSA552x_SCONTROL, 192 0x00 }, 193 { 160, 454 }, /* band-switch crosspoints */ 194 { 0xa0, 0x90, 0x30, 0x00 } }, /* the band-switch values */ 195 196 /* PHILIPS_PAL */ 197 { "Philips PAL", /* the 'name' */ 198 TTYPE_PAL, /* input type */ 199 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 200 TSA552x_SCONTROL, 201 TSA552x_SCONTROL, 202 0x00 }, 203 { 160, 454 }, /* band-switch crosspoints */ 204 { 0xa0, 0x90, 0x30, 0x00 } }, /* the band-switch values */ 205 206 /* PHILIPS_SECAM */ 207 { "Philips SECAM", /* the 'name' */ 208 TTYPE_SECAM, /* input type */ 209 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 210 TSA552x_SCONTROL, 211 TSA552x_SCONTROL, 212 0x00 }, 213 { 160, 454 }, /* band-switch crosspoints */ 214 { 0xa7, 0x97, 0x37, 0x00 } }, /* the band-switch values */ 215 216 /* TEMIC_PAL I */ 217 { "Temic PAL I", /* the 'name' */ 218 TTYPE_PAL, /* input type */ 219 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 220 TSA552x_SCONTROL, 221 TSA552x_SCONTROL, 222 0x00 }, 223 { 160, 454 }, /* band-switch crosspoints */ 224 { 0x02, 0x04, 0x01,0x00 } }, /* the band-switch values */ 225 226 /* PHILIPS_PALI */ 227 { "Philips PAL I", /* the 'name' */ 228 TTYPE_PAL, /* input type */ 229 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 230 TSA552x_SCONTROL, 231 TSA552x_SCONTROL, 232 0x00 }, 233 { 160, 454 }, /* band-switch crosspoints */ 234 { 0xa0, 0x90, 0x30,0x00 } }, /* the band-switch values */ 235 236 /* PHILIPS_FR1236_NTSC */ 237 { "Philips FR1236 NTSC FM", /* the 'name' */ 238 TTYPE_NTSC, /* input type */ 239 { TSA552x_FCONTROL, /* control byte for Tuner PLL */ 240 TSA552x_FCONTROL, 241 TSA552x_FCONTROL, 242 TSA552x_RADIO }, 243 { 160, 454 }, /* band-switch crosspoints */ 244 { 0xa0, 0x90, 0x30,0xa4 } }, /* the band-switch values */ 245 246 /* PHILIPS_FR1216_PAL */ 247 { "Philips FR1216 PAL FM" , /* the 'name' */ 248 TTYPE_PAL, /* input type */ 249 { TSA552x_FCONTROL, /* control byte for Tuner PLL */ 250 TSA552x_FCONTROL, 251 TSA552x_FCONTROL, 252 TSA552x_RADIO }, 253 { 160, 454 }, /* band-switch crosspoints */ 254 { 0xa0, 0x90, 0x30, 0xa4 } }, /* the band-switch values */ 255 256 /* PHILIPS_FR1236_SECAM */ 257 { "Philips FR1236 SECAM FM", /* the 'name' */ 258 TTYPE_SECAM, /* input type */ 259 { TSA552x_FCONTROL, /* control byte for Tuner PLL */ 260 TSA552x_FCONTROL, 261 TSA552x_FCONTROL, 262 TSA552x_RADIO }, 263 { 160, 454 }, /* band-switch crosspoints */ 264 { 0xa7, 0x97, 0x37, 0xa4 } }, /* the band-switch values */ 265 266 /* ALPS TSCH5 NTSC */ 267 { "ALPS TSCH5 NTSC FM", /* the 'name' */ 268 TTYPE_NTSC, /* input type */ 269 { TSCH5_FCONTROL, /* control byte for Tuner PLL */ 270 TSCH5_FCONTROL, 271 TSCH5_FCONTROL, 272 TSCH5_RADIO }, 273 { 160, 454 }, /* band-switch crosspoints */ 274 { 0x14, 0x12, 0x11, 0x04 } }, /* the band-switch values */ 275 276 /* ALPS TSBH1 NTSC */ 277 { "ALPS TSBH1 NTSC", /* the 'name' */ 278 TTYPE_NTSC, /* input type */ 279 { TSBH1_FCONTROL, /* control byte for Tuner PLL */ 280 TSBH1_FCONTROL, 281 TSBH1_FCONTROL, 282 0x00 }, 283 { 160, 454 }, /* band-switch crosspoints */ 284 { 0x01, 0x02, 0x08, 0x00 } } /* the band-switch values */ 285 }; 286 287 288 /* scaling factor for frequencies expressed as ints */ 289 #define FREQFACTOR 16 290 291 /* 292 * Format: 293 * entry 0: MAX legal channel 294 * entry 1: IF frequency 295 * expressed as fi{MHz} * 16, 296 * eg 45.75MHz == 45.75 * 16 = 732 297 * entry 2: [place holder/future] 298 * entry 3: base of channel record 0 299 * entry 3 + (x*3): base of channel record 'x' 300 * entry LAST: NULL channel entry marking end of records 301 * 302 * Record: 303 * int 0: base channel 304 * int 1: frequency of base channel, 305 * expressed as fb{MHz} * 16, 306 * int 2: offset frequency between channels, 307 * expressed as fo{MHz} * 16, 308 */ 309 310 /* 311 * North American Broadcast Channels: 312 * 313 * 2: 55.25 MHz - 4: 67.25 MHz 314 * 5: 77.25 MHz - 6: 83.25 MHz 315 * 7: 175.25 MHz - 13: 211.25 MHz 316 * 14: 471.25 MHz - 83: 885.25 MHz 317 * 318 * IF freq: 45.75 MHz 319 */ 320 #define OFFSET 6.00 321 static const int nabcst[] = { 322 83, (int)( 45.75 * FREQFACTOR), 0, 323 14, (int)(471.25 * 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, IRC: 333 * 334 * 2: 55.25 MHz - 4: 67.25 MHz 335 * 5: 77.25 MHz - 6: 83.25 MHz 336 * 7: 175.25 MHz - 13: 211.25 MHz 337 * 14: 121.25 MHz - 22: 169.25 MHz 338 * 23: 217.25 MHz - 94: 643.25 MHz 339 * 95: 91.25 MHz - 99: 115.25 MHz 340 * 341 * IF freq: 45.75 MHz 342 */ 343 #define OFFSET 6.00 344 static const int irccable[] = { 345 116, (int)( 45.75 * FREQFACTOR), 0, 346 100, (int)(649.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 347 95, (int)( 91.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 348 23, (int)(217.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 349 14, (int)(121.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 350 7, (int)(175.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 351 5, (int)( 77.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 352 2, (int)( 55.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 353 0 354 }; 355 #undef OFFSET 356 357 /* 358 * North American Cable Channels, HRC: 359 * 360 * 2: 54 MHz - 4: 66 MMz 361 * 5: 78 MHz - 6: 84 MHz 362 * 7: 174 MHz - 13: 210 MHz 363 * 14: 120 MHz - 22: 168 MHz 364 * 23: 216 MHz - 94: 642 MHz 365 * 95: 90 MHz - 99: 114 MHz 366 * 367 * IF freq: 45.75 MHz 368 */ 369 #define OFFSET 6.00 370 static const int hrccable[] = { 371 116, (int)( 45.75 * FREQFACTOR), 0, 372 100, (int)(648.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 373 95, (int)( 90.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 374 23, (int)(216.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 375 14, (int)(120.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 376 7, (int)(174.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 377 5, (int)( 78.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 378 2, (int)( 54.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 379 0 380 }; 381 #undef OFFSET 382 383 /* 384 * Western European broadcast channels: 385 * 386 * (there are others that appear to vary between countries - rmt) 387 * 388 * here's the table Philips provides: 389 * caution, some of the offsets don't compute... 390 * 391 * 1 4525 700 N21 392 * 393 * 2 4825 700 E2 394 * 3 5525 700 E3 395 * 4 6225 700 E4 396 * 397 * 5 17525 700 E5 398 * 6 18225 700 E6 399 * 7 18925 700 E7 400 * 8 19625 700 E8 401 * 9 20325 700 E9 402 * 10 21025 700 E10 403 * 11 21725 700 E11 404 * 12 22425 700 E12 405 * 406 * 13 5375 700 ITA 407 * 14 6225 700 ITB 408 * 409 * 15 8225 700 ITC 410 * 411 * 16 17525 700 ITD 412 * 17 18325 700 ITE 413 * 414 * 18 19225 700 ITF 415 * 19 20125 700 ITG 416 * 20 21025 700 ITH 417 * 418 * 21 47125 800 E21 419 * 22 47925 800 E22 420 * 23 48725 800 E23 421 * 24 49525 800 E24 422 * 25 50325 800 E25 423 * 26 51125 800 E26 424 * 27 51925 800 E27 425 * 28 52725 800 E28 426 * 29 53525 800 E29 427 * 30 54325 800 E30 428 * 31 55125 800 E31 429 * 32 55925 800 E32 430 * 33 56725 800 E33 431 * 34 57525 800 E34 432 * 35 58325 800 E35 433 * 36 59125 800 E36 434 * 37 59925 800 E37 435 * 38 60725 800 E38 436 * 39 61525 800 E39 437 * 40 62325 800 E40 438 * 41 63125 800 E41 439 * 42 63925 800 E42 440 * 43 64725 800 E43 441 * 44 65525 800 E44 442 * 45 66325 800 E45 443 * 46 67125 800 E46 444 * 47 67925 800 E47 445 * 48 68725 800 E48 446 * 49 69525 800 E49 447 * 50 70325 800 E50 448 * 51 71125 800 E51 449 * 52 71925 800 E52 450 * 53 72725 800 E53 451 * 54 73525 800 E54 452 * 55 74325 800 E55 453 * 56 75125 800 E56 454 * 57 75925 800 E57 455 * 58 76725 800 E58 456 * 59 77525 800 E59 457 * 60 78325 800 E60 458 * 61 79125 800 E61 459 * 62 79925 800 E62 460 * 63 80725 800 E63 461 * 64 81525 800 E64 462 * 65 82325 800 E65 463 * 66 83125 800 E66 464 * 67 83925 800 E67 465 * 68 84725 800 E68 466 * 69 85525 800 E69 467 * 468 * 70 4575 800 IA 469 * 71 5375 800 IB 470 * 72 6175 800 IC 471 * 472 * 74 6925 700 S01 473 * 75 7625 700 S02 474 * 76 8325 700 S03 475 * 476 * 80 10525 700 S1 477 * 81 11225 700 S2 478 * 82 11925 700 S3 479 * 83 12625 700 S4 480 * 84 13325 700 S5 481 * 85 14025 700 S6 482 * 86 14725 700 S7 483 * 87 15425 700 S8 484 * 88 16125 700 S9 485 * 89 16825 700 S10 486 * 90 23125 700 S11 487 * 91 23825 700 S12 488 * 92 24525 700 S13 489 * 93 25225 700 S14 490 * 94 25925 700 S15 491 * 95 26625 700 S16 492 * 96 27325 700 S17 493 * 97 28025 700 S18 494 * 98 28725 700 S19 495 * 99 29425 700 S20 496 * 497 * 498 * Channels S21 - S41 are taken from 499 * http://gemma.apple.com:80/dev/technotes/tn/tn1012.html 500 * 501 * 100 30325 800 S21 502 * 101 31125 800 S22 503 * 102 31925 800 S23 504 * 103 32725 800 S24 505 * 104 33525 800 S25 506 * 105 34325 800 S26 507 * 106 35125 800 S27 508 * 107 35925 800 S28 509 * 108 36725 800 S29 510 * 109 37525 800 S30 511 * 110 38325 800 S31 512 * 111 39125 800 S32 513 * 112 39925 800 S33 514 * 113 40725 800 S34 515 * 114 41525 800 S35 516 * 115 42325 800 S36 517 * 116 43125 800 S37 518 * 117 43925 800 S38 519 * 118 44725 800 S39 520 * 119 45525 800 S40 521 * 120 46325 800 S41 522 * 523 * 121 3890 000 IFFREQ 524 * 525 */ 526 static const int weurope[] = { 527 121, (int)( 38.90 * FREQFACTOR), 0, 528 100, (int)(303.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 529 90, (int)(231.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR), 530 80, (int)(105.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR), 531 74, (int)( 69.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR), 532 21, (int)(471.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 533 17, (int)(183.25 * FREQFACTOR), (int)(9.00 * FREQFACTOR), 534 16, (int)(175.25 * FREQFACTOR), (int)(9.00 * FREQFACTOR), 535 15, (int)( 82.25 * FREQFACTOR), (int)(8.50 * FREQFACTOR), 536 13, (int)( 53.75 * FREQFACTOR), (int)(8.50 * FREQFACTOR), 537 5, (int)(175.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR), 538 2, (int)( 48.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR), 539 0 540 }; 541 542 /* 543 * Japanese Broadcast Channels: 544 * 545 * 1: 91.25MHz - 3: 103.25MHz 546 * 4: 171.25MHz - 7: 189.25MHz 547 * 8: 193.25MHz - 12: 217.25MHz (VHF) 548 * 13: 471.25MHz - 62: 765.25MHz (UHF) 549 * 550 * IF freq: 45.75 MHz 551 * OR 552 * IF freq: 58.75 MHz 553 */ 554 #define OFFSET 6.00 555 #define IF_FREQ 45.75 556 static const int jpnbcst[] = { 557 62, (int)(IF_FREQ * FREQFACTOR), 0, 558 13, (int)(471.25 * 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 * Japanese Cable Channels: 569 * 570 * 1: 91.25MHz - 3: 103.25MHz 571 * 4: 171.25MHz - 7: 189.25MHz 572 * 8: 193.25MHz - 12: 217.25MHz 573 * 13: 109.25MHz - 21: 157.25MHz 574 * 22: 165.25MHz 575 * 23: 223.25MHz - 63: 463.25MHz 576 * 577 * IF freq: 45.75 MHz 578 */ 579 #define OFFSET 6.00 580 #define IF_FREQ 45.75 581 static const int jpncable[] = { 582 63, (int)(IF_FREQ * FREQFACTOR), 0, 583 23, (int)(223.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 584 22, (int)(165.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 585 13, (int)(109.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 586 8, (int)(193.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 587 4, (int)(171.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 588 1, (int)( 91.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 589 0 590 }; 591 #undef IF_FREQ 592 #undef OFFSET 593 594 /* 595 * xUSSR Broadcast Channels: 596 * 597 * 1: 49.75MHz - 2: 59.25MHz 598 * 3: 77.25MHz - 5: 93.25MHz 599 * 6: 175.25MHz - 12: 223.25MHz 600 * 13-20 - not exist 601 * 21: 471.25MHz - 34: 575.25MHz 602 * 35: 583.25MHz - 69: 855.25MHz 603 * 604 * Cable channels 605 * 606 * 70: 111.25MHz - 77: 167.25MHz 607 * 78: 231.25MHz -107: 463.25MHz 608 * 609 * IF freq: 38.90 MHz 610 */ 611 #define IF_FREQ 38.90 612 static const int xussr[] = { 613 107, (int)(IF_FREQ * FREQFACTOR), 0, 614 78, (int)(231.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 615 70, (int)(111.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 616 35, (int)(583.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 617 21, (int)(471.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 618 6, (int)(175.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 619 3, (int)( 77.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 620 1, (int)( 49.75 * FREQFACTOR), (int)(9.50 * FREQFACTOR), 621 0 622 }; 623 #undef IF_FREQ 624 625 /* 626 * Australian broadcast channels 627 */ 628 #define OFFSET 7.00 629 #define IF_FREQ 38.90 630 static const int australia[] = { 631 83, (int)(IF_FREQ * FREQFACTOR), 0, 632 28, (int)(527.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 633 10, (int)(209.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 634 6, (int)(175.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 635 4, (int)( 95.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 636 3, (int)( 86.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 637 1, (int)( 57.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 638 0 639 }; 640 #undef OFFSET 641 #undef IF_FREQ 642 643 /* 644 * France broadcast channels 645 */ 646 #define OFFSET 8.00 647 #define IF_FREQ 38.90 648 static const int france[] = { 649 69, (int)(IF_FREQ * FREQFACTOR), 0, 650 21, (int)(471.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 21 -> 69 */ 651 5, (int)(176.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 5 -> 10 */ 652 4, (int)( 63.75 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 4 */ 653 3, (int)( 60.50 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 3 */ 654 1, (int)( 47.75 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 1 2 */ 655 0 656 }; 657 #undef OFFSET 658 #undef IF_FREQ 659 660 static const struct { 661 const int *ptr; 662 const char name[BT848_MAX_CHNLSET_NAME_LEN]; 663 } freqTable[] = { 664 {NULL, ""}, 665 {nabcst, "nabcst"}, 666 {irccable, "cableirc"}, 667 {hrccable, "cablehrc"}, 668 {weurope, "weurope"}, 669 {jpnbcst, "jpnbcst"}, 670 {jpncable, "jpncable"}, 671 {xussr, "xussr"}, 672 {australia, "australia"}, 673 {france, "france"}, 674 675 }; 676 677 #define TBL_CHNL freqTable[bktr->tuner.chnlset].ptr[x] 678 #define TBL_BASE_FREQ freqTable[bktr->tuner.chnlset].ptr[x + 1] 679 #define TBL_OFFSET freqTable[bktr->tuner.chnlset].ptr[x + 2] 680 static int 681 frequency_lookup(bktr_ptr_t bktr, int channel) 682 { 683 int x; 684 685 /* check for "> MAX channel" */ 686 x = 0; 687 if (channel > TBL_CHNL) 688 return(-1); 689 690 /* search the table for data */ 691 for (x = 3; TBL_CHNL; x += 3) { 692 if (channel >= TBL_CHNL) { 693 return(TBL_BASE_FREQ + 694 ((channel - TBL_CHNL) * TBL_OFFSET)); 695 } 696 } 697 698 /* not found, must be below the MIN channel */ 699 return(-1); 700 } 701 #undef TBL_OFFSET 702 #undef TBL_BASE_FREQ 703 #undef TBL_CHNL 704 705 706 #define TBL_IF freqTable[bktr->tuner.chnlset].ptr[1] 707 708 709 /* Initialise the tuner structures in the bktr_softc */ 710 /* This is needed as the tuner details are no longer globally declared */ 711 712 void select_tuner(bktr_ptr_t bktr, int tuner_type) { 713 if (tuner_type < Bt848_MAX_TUNER) { 714 bktr->card.tuner = &tuners[tuner_type]; 715 } else { 716 bktr->card.tuner = NULL; 717 } 718 } 719 720 /* 721 * Tuner Notes: 722 * Programming the tuner properly is quite complicated. 723 * Here are some notes, based on a FM1246 data sheet for a PAL-I tuner. 724 * The tuner (front end) covers 45.75 MHz - 855.25 MHz and an FM band of 725 * 87.5 MHz to 108.0 MHz. 726 * 727 * RF and IF. RF = radio frequencies, it is the transmitted signal. 728 * IF is the Intermediate Frequency (the offset from the base 729 * signal where the video, color, audio and NICAM signals are. 730 * 731 * Eg, Picture at 38.9 MHz, Colour at 34.47 MHz, sound at 32.9 MHz 732 * NICAM at 32.348 MHz. 733 * Strangely enough, there is an IF (intermediate frequency) for 734 * FM Radio which is 10.7 MHz. 735 * 736 * The tuner also works in Bands. Philips bands are 737 * FM radio band 87.50 to 108.00 MHz 738 * Low band 45.75 to 170.00 MHz 739 * Mid band 170.00 to 450.00 MHz 740 * High band 450.00 to 855.25 MHz 741 * 742 * 743 * Now we need to set the PLL on the tuner to the required frequency. 744 * It has a programmable divisor. 745 * For TV we want 746 * N = 16 (freq RF(pc) + freq IF(pc)) pc is picture carrier and RF and IF 747 * are in MHz. 748 749 * For RADIO we want a different equation. 750 * freq IF is 10.70 MHz (so the data sheet tells me) 751 * N = (freq RF + freq IF) / step size 752 * The step size must be set to 50 kHz (so the data sheet tells me) 753 * (note this is 50 kHz, the other things are in MHz) 754 * so we end up with N = 20x(freq RF + 10.7) 755 * 756 */ 757 758 #define LOW_BAND 0 759 #define MID_BAND 1 760 #define HIGH_BAND 2 761 #define FM_RADIO_BAND 3 762 763 764 /* Check if these are correct for other than Philips PAL */ 765 #define STATUSBIT_COLD 0x80 766 #define STATUSBIT_LOCK 0x40 767 #define STATUSBIT_TV 0x20 768 #define STATUSBIT_STEREO 0x10 /* valid if FM (aka not TV) */ 769 #define STATUSBIT_ADC 0x07 770 771 /* 772 * set the frequency of the tuner 773 * If 'type' is TV_FREQUENCY, the frequency is freq MHz*16 774 * If 'type' is FM_RADIO_FREQUENCY, the frequency is freq MHz * 100 775 * (note *16 gives is 4 bits of fraction, eg steps of nnn.0625) 776 * 777 */ 778 int 779 tv_freq(bktr_ptr_t bktr, int frequency, int type) 780 { 781 const struct TUNER* tuner; 782 u_char addr; 783 u_char control; 784 u_char band; 785 int N; 786 int band_select = 0; 787 #if defined(TEST_TUNER_AFC) 788 int oldFrequency, afcDelta; 789 #endif 790 791 tuner = bktr->card.tuner; 792 if (tuner == NULL) 793 return(-1); 794 795 if (type == TV_FREQUENCY) { 796 /* 797 * select the band based on frequency 798 */ 799 if (frequency < (tuner->bandLimits[0] * FREQFACTOR)) 800 band_select = LOW_BAND; 801 else if (frequency < (tuner->bandLimits[1] * FREQFACTOR)) 802 band_select = MID_BAND; 803 else 804 band_select = HIGH_BAND; 805 806 #if defined(TEST_TUNER_AFC) 807 if (bktr->tuner.afc) 808 frequency -= 4; 809 #endif 810 /* 811 * N = 16 * { fRF(pc) + fIF(pc) } 812 * or N = 16* fRF(pc) + 16*fIF(pc) } 813 * where: 814 * pc is picture carrier, fRF & fIF are in MHz 815 * 816 * fortunately, frequency is passed in as MHz * 16 817 * and the TBL_IF frequency is also stored in MHz * 16 818 */ 819 N = frequency + TBL_IF; 820 821 /* set the address of the PLL */ 822 addr = bktr->card.tuner_pllAddr; 823 control = tuner->pllControl[band_select]; 824 band = tuner->bandAddrs[band_select]; 825 826 if(!(band && control)) /* Don't try to set un- */ 827 return(-1); /* supported modes. */ 828 829 if (frequency > bktr->tuner.frequency) { 830 i2cWrite(bktr, addr, (N>>8) & 0x7f, N & 0xff); 831 i2cWrite(bktr, addr, control, band); 832 } 833 else { 834 i2cWrite(bktr, addr, control, band); 835 i2cWrite(bktr, addr, (N>>8) & 0x7f, N & 0xff); 836 } 837 838 #if defined(TUNER_AFC) 839 if (bktr->tuner.afc == TRUE) { 840 #if defined(TEST_TUNER_AFC) 841 oldFrequency = frequency; 842 #endif 843 if ((N = do_afc(bktr, addr, N)) < 0) { 844 /* AFC failed, restore requested frequency */ 845 N = frequency + TBL_IF; 846 #if defined(TEST_TUNER_AFC) 847 printf("%s: do_afc: failed to lock\n", 848 bktr_name(bktr)); 849 #endif 850 i2cWrite(bktr, addr, (N>>8) & 0x7f, N & 0xff); 851 } 852 else 853 frequency = N - TBL_IF; 854 #if defined(TEST_TUNER_AFC) 855 printf("%s: do_afc: returned freq %d (%d %% %d)\n", bktr_name(bktr), frequency, frequency / 16, frequency % 16); 856 afcDelta = frequency - oldFrequency; 857 printf("%s: changed by: %d clicks (%d mod %d)\n", bktr_name(bktr), afcDelta, afcDelta / 16, afcDelta % 16); 858 #endif 859 } 860 #endif /* TUNER_AFC */ 861 862 bktr->tuner.frequency = frequency; 863 } 864 865 if (type == FM_RADIO_FREQUENCY) { 866 band_select = FM_RADIO_BAND; 867 868 /* 869 * N = { fRF(pc) + fIF(pc) }/step_size 870 * The step size is 50kHz for FM radio. 871 * (eg after 102.35MHz comes 102.40 MHz) 872 * fIF is 10.7 MHz (as detailed in the specs) 873 * 874 * frequency is passed in as MHz * 100 875 * 876 * So, we have N = (frequency/100 + 10.70) /(50/1000) 877 */ 878 N = (frequency + 1070)/5; 879 880 /* set the address of the PLL */ 881 addr = bktr->card.tuner_pllAddr; 882 control = tuner->pllControl[band_select]; 883 band = tuner->bandAddrs[band_select]; 884 885 if(!(band && control)) /* Don't try to set un- */ 886 return(-1); /* supported modes. */ 887 888 band |= bktr->tuner.radio_mode; /* tuner.radio_mode is set in 889 * the ioctls RADIO_SETMODE 890 * and RADIO_GETMODE */ 891 892 i2cWrite(bktr, addr, control, band); 893 i2cWrite(bktr, addr, (N>>8) & 0x7f, N & 0xff); 894 895 bktr->tuner.frequency = (N * 5) - 1070; 896 897 898 } 899 900 901 return(0); 902 } 903 904 905 906 #if defined(TUNER_AFC) 907 /* 908 * 909 */ 910 int 911 do_afc(bktr_ptr_t bktr, int addr, int frequency) 912 { 913 int step; 914 int status; 915 int origFrequency; 916 917 origFrequency = frequency; 918 919 /* wait for first setting to take effect */ 920 tsleep(BKTR_SLEEP, PZERO, "tuning", hz/8); 921 922 if ((status = i2cRead(bktr, addr + 1)) < 0) 923 return(-1); 924 925 #if defined(TEST_TUNER_AFC) 926 printf("%s: Original freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status); 927 #endif 928 for (step = 0; step < AFC_MAX_STEP; ++step) { 929 if ((status = i2cRead(bktr, addr + 1)) < 0) 930 goto fubar; 931 if (!(status & 0x40)) { 932 #if defined(TEST_TUNER_AFC) 933 printf("%s: no lock!\n", bktr_name(bktr)); 934 #endif 935 goto fubar; 936 } 937 938 switch(status & AFC_BITS) { 939 case AFC_FREQ_CENTERED: 940 #if defined(TEST_TUNER_AFC) 941 printf("%s: Centered, freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status); 942 #endif 943 return(frequency); 944 945 case AFC_FREQ_MINUS_125: 946 case AFC_FREQ_MINUS_62: 947 #if defined(TEST_TUNER_AFC) 948 printf("%s: Low, freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status); 949 #endif 950 --frequency; 951 break; 952 953 case AFC_FREQ_PLUS_62: 954 case AFC_FREQ_PLUS_125: 955 #if defined(TEST_TUNER_AFC) 956 printf("%s: Hi, freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status); 957 #endif 958 ++frequency; 959 break; 960 } 961 962 i2cWrite(bktr, addr, 963 (frequency>>8) & 0x7f, frequency & 0xff); 964 DELAY(AFC_DELAY); 965 } 966 967 fubar: 968 i2cWrite(bktr, addr, 969 (origFrequency>>8) & 0x7f, origFrequency & 0xff); 970 971 return(-1); 972 } 973 #endif /* TUNER_AFC */ 974 #undef TBL_IF 975 976 977 /* 978 * Get the Tuner status and signal strength 979 */ 980 int get_tuner_status(bktr_ptr_t bktr) { 981 return i2cRead(bktr, bktr->card.tuner_pllAddr + 1); 982 } 983 984 /* 985 * set the channel of the tuner 986 */ 987 int 988 tv_channel(bktr_ptr_t bktr, int channel) 989 { 990 int frequency; 991 992 /* calculate the frequency according to tuner type */ 993 if ((frequency = frequency_lookup(bktr, channel)) < 0) 994 return(-1); 995 996 /* set the new frequency */ 997 if (tv_freq(bktr, frequency, TV_FREQUENCY) < 0) 998 return(-1); 999 1000 /* OK to update records */ 1001 return((bktr->tuner.channel = channel)); 1002 } 1003 1004 /* 1005 * get channelset name 1006 */ 1007 int 1008 tuner_getchnlset(struct bktr_chnlset *chnlset) 1009 { 1010 if ((chnlset->index < CHNLSET_MIN) || 1011 (chnlset->index > CHNLSET_MAX)) 1012 return(EINVAL); 1013 1014 memcpy(&chnlset->name, &freqTable[chnlset->index].name, 1015 BT848_MAX_CHNLSET_NAME_LEN); 1016 1017 chnlset->max_channel=freqTable[chnlset->index].ptr[0]; 1018 return(0); 1019 } 1020
Indexes created Mon Sep 22 10:09:38 GMT 2025