bktr_tuner.c revision 1.1
1 /* $NetBSD: bktr_tuner.c,v 1.1 2000/05/07 00:16:18 wiz Exp $ */ 2 3 /* FreeBSD: src/sys/dev/bktr/bktr_tuner.c,v 1.5 2000/01/24 14:00:21 roger Exp */ 4 5 /* 6 * This is part of the Driver for Video Capture Cards (Frame grabbers) 7 * and TV Tuner cards using the Brooktree Bt848, Bt848A, Bt849A, Bt878, Bt879 8 * chipset. 9 * Copyright Roger Hardiman and Amancio Hasty. 10 * 11 * bktr_tuner : This deals with controlling the tuner fitted to TV cards. 12 * 13 */ 14 15 /* 16 * 1. Redistributions of source code must retain the 17 * Copyright (c) 1997 Amancio Hasty, 1999 Roger Hardiman 18 * All rights reserved. 19 * 20 * Redistribution and use in source and binary forms, with or without 21 * modification, are permitted provided that the following conditions 22 * are met: 23 * 1. Redistributions of source code must retain the above copyright 24 * notice, this list of conditions and the following disclaimer. 25 * 2. Redistributions in binary form must reproduce the above copyright 26 * notice, this list of conditions and the following disclaimer in the 27 * documentation and/or other materials provided with the distribution. 28 * 3. All advertising materials mentioning features or use of this software 29 * must display the following acknowledgement: 30 * This product includes software developed by Amancio Hasty and 31 * Roger Hardiman 32 * 4. The name of the author may not be used to endorse or promote products 33 * derived from this software without specific prior written permission. 34 * 35 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 36 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 37 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 38 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 39 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 40 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 41 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 42 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 43 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 44 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 45 * POSSIBILITY OF SUCH DAMAGE. 46 */ 47 48 49 50 #include <sys/param.h> 51 #include <sys/systm.h> 52 #include <sys/kernel.h> 53 #include <sys/vnode.h> 54 #ifdef __NetBSD__ 55 #include <sys/proc.h> 56 #endif 57 58 #ifdef __FreeBSD__ 59 #include <machine/clock.h> /* for DELAY */ 60 #include <pci/pcivar.h> 61 #endif 62 63 #if (__FreeBSD_version >=300000) 64 #include <machine/bus_memio.h> /* for bus space */ 65 #include <machine/bus.h> 66 #include <sys/bus.h> 67 #endif 68 69 #ifdef __NetBSD__ 70 #include <dev/ic/ioctl_meteor.h> /* NetBSD .h file location */ 71 #include <dev/ic/ioctl_bt848.h> 72 #else 73 #include <machine/ioctl_meteor.h> /* Traditional .h file location */ 74 #include <machine/ioctl_bt848.h> /* extensions to ioctl_meteor.h */ 75 #endif 76 #include <dev/bktr/bktr_reg.h> 77 #include <dev/bktr/bktr_tuner.h> 78 #include <dev/bktr/bktr_card.h> 79 #include <dev/bktr/bktr_core.h> 80 81 82 83 #if defined( TUNER_AFC ) 84 #define AFC_DELAY 10000 /* 10 millisend delay */ 85 #define AFC_BITS 0x07 86 #define AFC_FREQ_MINUS_125 0x00 87 #define AFC_FREQ_MINUS_62 0x01 88 #define AFC_FREQ_CENTERED 0x02 89 #define AFC_FREQ_PLUS_62 0x03 90 #define AFC_FREQ_PLUS_125 0x04 91 #define AFC_MAX_STEP (5 * FREQFACTOR) /* no more than 5 MHz */ 92 #endif /* TUNER_AFC */ 93 94 95 #define TTYPE_XXX 0 96 #define TTYPE_NTSC 1 97 #define TTYPE_NTSC_J 2 98 #define TTYPE_PAL 3 99 #define TTYPE_PAL_M 4 100 #define TTYPE_PAL_N 5 101 #define TTYPE_SECAM 6 102 103 #define TSA552x_CB_MSB (0x80) 104 #define TSA552x_CB_CP (1<<6) /* set this for fast tuning */ 105 #define TSA552x_CB_T2 (1<<5) /* test mode - Normally set to 0 */ 106 #define TSA552x_CB_T1 (1<<4) /* test mode - Normally set to 0 */ 107 #define TSA552x_CB_T0 (1<<3) /* test mode - Normally set to 1 */ 108 #define TSA552x_CB_RSA (1<<2) /* 0 for 31.25 khz, 1 for 62.5 kHz */ 109 #define TSA552x_CB_RSB (1<<1) /* 0 for FM 50kHz steps, 1 = Use RSA*/ 110 #define TSA552x_CB_OS (1<<0) /* Set to 0 for normal operation */ 111 112 #define TSA552x_RADIO (TSA552x_CB_MSB | \ 113 TSA552x_CB_T0) 114 115 /* raise the charge pump voltage for fast tuning */ 116 #define TSA552x_FCONTROL (TSA552x_CB_MSB | \ 117 TSA552x_CB_CP | \ 118 TSA552x_CB_T0 | \ 119 TSA552x_CB_RSA | \ 120 TSA552x_CB_RSB) 121 122 /* lower the charge pump voltage for better residual oscillator FM */ 123 #define TSA552x_SCONTROL (TSA552x_CB_MSB | \ 124 TSA552x_CB_T0 | \ 125 TSA552x_CB_RSA | \ 126 TSA552x_CB_RSB) 127 128 /* The control value for the ALPS TSCH5 Tuner */ 129 #define TSCH5_FCONTROL 0x82 130 #define TSCH5_RADIO 0x86 131 132 /* The control value for the ALPS TSBH1 Tuner */ 133 #define TSBH1_FCONTROL 0xce 134 135 136 static const struct TUNER tuners[] = { 137 /* XXX FIXME: fill in the band-switch crosspoints */ 138 /* NO_TUNER */ 139 { "<no>", /* the 'name' */ 140 TTYPE_XXX, /* input type */ 141 { 0x00, /* control byte for Tuner PLL */ 142 0x00, 143 0x00, 144 0x00 }, 145 { 0x00, 0x00 }, /* band-switch crosspoints */ 146 { 0x00, 0x00, 0x00,0x00} }, /* the band-switch values */ 147 148 /* TEMIC_NTSC */ 149 { "Temic NTSC", /* the 'name' */ 150 TTYPE_NTSC, /* input type */ 151 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 152 TSA552x_SCONTROL, 153 TSA552x_SCONTROL, 154 0x00 }, 155 { 0x00, 0x00}, /* band-switch crosspoints */ 156 { 0x02, 0x04, 0x01, 0x00 } }, /* the band-switch values */ 157 158 /* TEMIC_PAL */ 159 { "Temic PAL", /* the 'name' */ 160 TTYPE_PAL, /* input type */ 161 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 162 TSA552x_SCONTROL, 163 TSA552x_SCONTROL, 164 0x00 }, 165 { 0x00, 0x00 }, /* band-switch crosspoints */ 166 { 0x02, 0x04, 0x01, 0x00 } }, /* the band-switch values */ 167 168 /* TEMIC_SECAM */ 169 { "Temic SECAM", /* the 'name' */ 170 TTYPE_SECAM, /* input type */ 171 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 172 TSA552x_SCONTROL, 173 TSA552x_SCONTROL, 174 0x00 }, 175 { 0x00, 0x00 }, /* band-switch crosspoints */ 176 { 0x02, 0x04, 0x01,0x00 } }, /* the band-switch values */ 177 178 /* PHILIPS_NTSC */ 179 { "Philips NTSC", /* the 'name' */ 180 TTYPE_NTSC, /* input type */ 181 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 182 TSA552x_SCONTROL, 183 TSA552x_SCONTROL, 184 0x00 }, 185 { 0x00, 0x00 }, /* band-switch crosspoints */ 186 { 0xa0, 0x90, 0x30, 0x00 } }, /* the band-switch values */ 187 188 /* PHILIPS_PAL */ 189 { "Philips PAL", /* the 'name' */ 190 TTYPE_PAL, /* input type */ 191 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 192 TSA552x_SCONTROL, 193 TSA552x_SCONTROL, 194 0x00 }, 195 { 0x00, 0x00 }, /* band-switch crosspoints */ 196 { 0xa0, 0x90, 0x30, 0x00 } }, /* the band-switch values */ 197 198 /* PHILIPS_SECAM */ 199 { "Philips SECAM", /* the 'name' */ 200 TTYPE_SECAM, /* input type */ 201 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 202 TSA552x_SCONTROL, 203 TSA552x_SCONTROL, 204 0x00 }, 205 { 0x00, 0x00 }, /* band-switch crosspoints */ 206 { 0xa7, 0x97, 0x37, 0x00 } }, /* the band-switch values */ 207 208 /* TEMIC_PAL I */ 209 { "Temic PAL I", /* the 'name' */ 210 TTYPE_PAL, /* input type */ 211 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 212 TSA552x_SCONTROL, 213 TSA552x_SCONTROL, 214 0x00 }, 215 { 0x00, 0x00 }, /* band-switch crosspoints */ 216 { 0x02, 0x04, 0x01,0x00 } }, /* the band-switch values */ 217 218 /* PHILIPS_PALI */ 219 { "Philips PAL I", /* the 'name' */ 220 TTYPE_PAL, /* input type */ 221 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 222 TSA552x_SCONTROL, 223 TSA552x_SCONTROL, 224 0x00 }, 225 { 0x00, 0x00 }, /* band-switch crosspoints */ 226 { 0xa0, 0x90, 0x30,0x00 } }, /* the band-switch values */ 227 228 /* PHILIPS_FR1236_NTSC */ 229 { "Philips FR1236 NTSC FM", /* the 'name' */ 230 TTYPE_NTSC, /* input type */ 231 { TSA552x_FCONTROL, /* control byte for Tuner PLL */ 232 TSA552x_FCONTROL, 233 TSA552x_FCONTROL, 234 TSA552x_RADIO }, 235 { 0x00, 0x00 }, /* band-switch crosspoints */ 236 { 0xa0, 0x90, 0x30,0xa4 } }, /* the band-switch values */ 237 238 /* PHILIPS_FR1216_PAL */ 239 { "Philips FR1216 PAL FM" , /* the 'name' */ 240 TTYPE_PAL, /* input type */ 241 { TSA552x_FCONTROL, /* control byte for Tuner PLL */ 242 TSA552x_FCONTROL, 243 TSA552x_FCONTROL, 244 TSA552x_RADIO }, 245 { 0x00, 0x00 }, /* band-switch crosspoints */ 246 { 0xa0, 0x90, 0x30, 0xa4 } }, /* the band-switch values */ 247 248 /* PHILIPS_FR1236_SECAM */ 249 { "Philips FR1236 SECAM FM", /* the 'name' */ 250 TTYPE_SECAM, /* input type */ 251 { TSA552x_FCONTROL, /* control byte for Tuner PLL */ 252 TSA552x_FCONTROL, 253 TSA552x_FCONTROL, 254 TSA552x_RADIO }, 255 { 0x00, 0x00 }, /* band-switch crosspoints */ 256 { 0xa7, 0x97, 0x37, 0xa4 } }, /* the band-switch values */ 257 258 /* ALPS TSCH5 NTSC */ 259 { "ALPS TSCH5 NTSC FM", /* the 'name' */ 260 TTYPE_NTSC, /* input type */ 261 { TSCH5_FCONTROL, /* control byte for Tuner PLL */ 262 TSCH5_FCONTROL, 263 TSCH5_FCONTROL, 264 TSCH5_RADIO }, 265 { 0x00, 0x00 }, /* band-switch crosspoints */ 266 { 0x14, 0x12, 0x11, 0x04 } }, /* the band-switch values */ 267 268 /* ALPS TSBH1 NTSC */ 269 { "ALPS TSBH1 NTSC", /* the 'name' */ 270 TTYPE_NTSC, /* input type */ 271 { TSBH1_FCONTROL, /* control byte for Tuner PLL */ 272 TSBH1_FCONTROL, 273 TSBH1_FCONTROL, 274 0x00 }, 275 { 0x00, 0x00 }, /* band-switch crosspoints */ 276 { 0x01, 0x02, 0x08, 0x00 } } /* the band-switch values */ 277 }; 278 279 280 /* scaling factor for frequencies expressed as ints */ 281 #define FREQFACTOR 16 282 283 /* 284 * Format: 285 * entry 0: MAX legal channel 286 * entry 1: IF frequency 287 * expressed as fi{mHz} * 16, 288 * eg 45.75mHz == 45.75 * 16 = 732 289 * entry 2: [place holder/future] 290 * entry 3: base of channel record 0 291 * entry 3 + (x*3): base of channel record 'x' 292 * entry LAST: NULL channel entry marking end of records 293 * 294 * Record: 295 * int 0: base channel 296 * int 1: frequency of base channel, 297 * expressed as fb{mHz} * 16, 298 * int 2: offset frequency between channels, 299 * expressed as fo{mHz} * 16, 300 */ 301 302 /* 303 * North American Broadcast Channels: 304 * 305 * 2: 55.25 mHz - 4: 67.25 mHz 306 * 5: 77.25 mHz - 6: 83.25 mHz 307 * 7: 175.25 mHz - 13: 211.25 mHz 308 * 14: 471.25 mHz - 83: 885.25 mHz 309 * 310 * IF freq: 45.75 mHz 311 */ 312 #define OFFSET 6.00 313 static int nabcst[] = { 314 83, (int)( 45.75 * FREQFACTOR), 0, 315 14, (int)(471.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 316 7, (int)(175.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 317 5, (int)( 77.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 318 2, (int)( 55.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 319 0 320 }; 321 #undef OFFSET 322 323 /* 324 * North American Cable Channels, IRC: 325 * 326 * 2: 55.25 mHz - 4: 67.25 mHz 327 * 5: 77.25 mHz - 6: 83.25 mHz 328 * 7: 175.25 mHz - 13: 211.25 mHz 329 * 14: 121.25 mHz - 22: 169.25 mHz 330 * 23: 217.25 mHz - 94: 643.25 mHz 331 * 95: 91.25 mHz - 99: 115.25 mHz 332 * 333 * IF freq: 45.75 mHz 334 */ 335 #define OFFSET 6.00 336 static int irccable[] = { 337 116, (int)( 45.75 * FREQFACTOR), 0, 338 100, (int)(649.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 339 95, (int)( 91.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 340 23, (int)(217.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 341 14, (int)(121.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 342 7, (int)(175.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 343 5, (int)( 77.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 344 2, (int)( 55.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 345 0 346 }; 347 #undef OFFSET 348 349 /* 350 * North American Cable Channels, HRC: 351 * 352 * 2: 54 mHz - 4: 66 mHz 353 * 5: 78 mHz - 6: 84 mHz 354 * 7: 174 mHz - 13: 210 mHz 355 * 14: 120 mHz - 22: 168 mHz 356 * 23: 216 mHz - 94: 642 mHz 357 * 95: 90 mHz - 99: 114 mHz 358 * 359 * IF freq: 45.75 mHz 360 */ 361 #define OFFSET 6.00 362 static int hrccable[] = { 363 116, (int)( 45.75 * FREQFACTOR), 0, 364 100, (int)(648.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 365 95, (int)( 90.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 366 23, (int)(216.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 367 14, (int)(120.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 368 7, (int)(174.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 369 5, (int)( 78.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 370 2, (int)( 54.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 371 0 372 }; 373 #undef OFFSET 374 375 /* 376 * Western European broadcast channels: 377 * 378 * (there are others that appear to vary between countries - rmt) 379 * 380 * here's the table Philips provides: 381 * caution, some of the offsets don't compute... 382 * 383 * 1 4525 700 N21 384 * 385 * 2 4825 700 E2 386 * 3 5525 700 E3 387 * 4 6225 700 E4 388 * 389 * 5 17525 700 E5 390 * 6 18225 700 E6 391 * 7 18925 700 E7 392 * 8 19625 700 E8 393 * 9 20325 700 E9 394 * 10 21025 700 E10 395 * 11 21725 700 E11 396 * 12 22425 700 E12 397 * 398 * 13 5375 700 ITA 399 * 14 6225 700 ITB 400 * 401 * 15 8225 700 ITC 402 * 403 * 16 17525 700 ITD 404 * 17 18325 700 ITE 405 * 406 * 18 19225 700 ITF 407 * 19 20125 700 ITG 408 * 20 21025 700 ITH 409 * 410 * 21 47125 800 E21 411 * 22 47925 800 E22 412 * 23 48725 800 E23 413 * 24 49525 800 E24 414 * 25 50325 800 E25 415 * 26 51125 800 E26 416 * 27 51925 800 E27 417 * 28 52725 800 E28 418 * 29 53525 800 E29 419 * 30 54325 800 E30 420 * 31 55125 800 E31 421 * 32 55925 800 E32 422 * 33 56725 800 E33 423 * 34 57525 800 E34 424 * 35 58325 800 E35 425 * 36 59125 800 E36 426 * 37 59925 800 E37 427 * 38 60725 800 E38 428 * 39 61525 800 E39 429 * 40 62325 800 E40 430 * 41 63125 800 E41 431 * 42 63925 800 E42 432 * 43 64725 800 E43 433 * 44 65525 800 E44 434 * 45 66325 800 E45 435 * 46 67125 800 E46 436 * 47 67925 800 E47 437 * 48 68725 800 E48 438 * 49 69525 800 E49 439 * 50 70325 800 E50 440 * 51 71125 800 E51 441 * 52 71925 800 E52 442 * 53 72725 800 E53 443 * 54 73525 800 E54 444 * 55 74325 800 E55 445 * 56 75125 800 E56 446 * 57 75925 800 E57 447 * 58 76725 800 E58 448 * 59 77525 800 E59 449 * 60 78325 800 E60 450 * 61 79125 800 E61 451 * 62 79925 800 E62 452 * 63 80725 800 E63 453 * 64 81525 800 E64 454 * 65 82325 800 E65 455 * 66 83125 800 E66 456 * 67 83925 800 E67 457 * 68 84725 800 E68 458 * 69 85525 800 E69 459 * 460 * 70 4575 800 IA 461 * 71 5375 800 IB 462 * 72 6175 800 IC 463 * 464 * 74 6925 700 S01 465 * 75 7625 700 S02 466 * 76 8325 700 S03 467 * 468 * 80 10525 700 S1 469 * 81 11225 700 S2 470 * 82 11925 700 S3 471 * 83 12625 700 S4 472 * 84 13325 700 S5 473 * 85 14025 700 S6 474 * 86 14725 700 S7 475 * 87 15425 700 S8 476 * 88 16125 700 S9 477 * 89 16825 700 S10 478 * 90 23125 700 S11 479 * 91 23825 700 S12 480 * 92 24525 700 S13 481 * 93 25225 700 S14 482 * 94 25925 700 S15 483 * 95 26625 700 S16 484 * 96 27325 700 S17 485 * 97 28025 700 S18 486 * 98 28725 700 S19 487 * 99 29425 700 S20 488 * 489 * 490 * Channels S21 - S41 are taken from 491 * http://gemma.apple.com:80/dev/technotes/tn/tn1012.html 492 * 493 * 100 30325 800 S21 494 * 101 31125 800 S22 495 * 102 31925 800 S23 496 * 103 32725 800 S24 497 * 104 33525 800 S25 498 * 105 34325 800 S26 499 * 106 35125 800 S27 500 * 107 35925 800 S28 501 * 108 36725 800 S29 502 * 109 37525 800 S30 503 * 110 38325 800 S31 504 * 111 39125 800 S32 505 * 112 39925 800 S33 506 * 113 40725 800 S34 507 * 114 41525 800 S35 508 * 115 42325 800 S36 509 * 116 43125 800 S37 510 * 117 43925 800 S38 511 * 118 44725 800 S39 512 * 119 45525 800 S40 513 * 120 46325 800 S41 514 * 515 * 121 3890 000 IFFREQ 516 * 517 */ 518 static int weurope[] = { 519 121, (int)( 38.90 * FREQFACTOR), 0, 520 100, (int)(303.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 521 90, (int)(231.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR), 522 80, (int)(105.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR), 523 74, (int)( 69.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR), 524 21, (int)(471.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 525 17, (int)(183.25 * FREQFACTOR), (int)(9.00 * FREQFACTOR), 526 16, (int)(175.25 * FREQFACTOR), (int)(9.00 * FREQFACTOR), 527 15, (int)(82.25 * FREQFACTOR), (int)(8.50 * FREQFACTOR), 528 13, (int)(53.75 * FREQFACTOR), (int)(8.50 * FREQFACTOR), 529 5, (int)(175.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR), 530 2, (int)(48.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR), 531 0 532 }; 533 534 /* 535 * Japanese Broadcast Channels: 536 * 537 * 1: 91.25MHz - 3: 103.25MHz 538 * 4: 171.25MHz - 7: 189.25MHz 539 * 8: 193.25MHz - 12: 217.25MHz (VHF) 540 * 13: 471.25MHz - 62: 765.25MHz (UHF) 541 * 542 * IF freq: 45.75 mHz 543 * OR 544 * IF freq: 58.75 mHz 545 */ 546 #define OFFSET 6.00 547 #define IF_FREQ 45.75 548 static int jpnbcst[] = { 549 62, (int)(IF_FREQ * FREQFACTOR), 0, 550 13, (int)(471.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 551 8, (int)(193.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 552 4, (int)(171.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 553 1, (int)( 91.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 554 0 555 }; 556 #undef IF_FREQ 557 #undef OFFSET 558 559 /* 560 * Japanese Cable Channels: 561 * 562 * 1: 91.25MHz - 3: 103.25MHz 563 * 4: 171.25MHz - 7: 189.25MHz 564 * 8: 193.25MHz - 12: 217.25MHz 565 * 13: 109.25MHz - 21: 157.25MHz 566 * 22: 165.25MHz 567 * 23: 223.25MHz - 63: 463.25MHz 568 * 569 * IF freq: 45.75 mHz 570 */ 571 #define OFFSET 6.00 572 #define IF_FREQ 45.75 573 static int jpncable[] = { 574 63, (int)(IF_FREQ * FREQFACTOR), 0, 575 23, (int)(223.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 576 22, (int)(165.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 577 13, (int)(109.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 578 8, (int)(193.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 579 4, (int)(171.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 580 1, (int)( 91.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 581 0 582 }; 583 #undef IF_FREQ 584 #undef OFFSET 585 586 /* 587 * xUSSR Broadcast Channels: 588 * 589 * 1: 49.75MHz - 2: 59.25MHz 590 * 3: 77.25MHz - 5: 93.25MHz 591 * 6: 175.25MHz - 12: 223.25MHz 592 * 13-20 - not exist 593 * 21: 471.25MHz - 34: 575.25MHz 594 * 35: 583.25MHz - 69: 855.25MHz 595 * 596 * Cable channels 597 * 598 * 70: 111.25MHz - 77: 167.25MHz 599 * 78: 231.25MHz -107: 463.25MHz 600 * 601 * IF freq: 38.90 MHz 602 */ 603 #define IF_FREQ 38.90 604 static int xussr[] = { 605 107, (int)(IF_FREQ * FREQFACTOR), 0, 606 78, (int)(231.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 607 70, (int)(111.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 608 35, (int)(583.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 609 21, (int)(471.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 610 6, (int)(175.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 611 3, (int)( 77.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 612 1, (int)( 49.75 * FREQFACTOR), (int)(9.50 * FREQFACTOR), 613 0 614 }; 615 #undef IF_FREQ 616 617 /* 618 * Australian broadcast channels 619 */ 620 #define OFFSET 7.00 621 #define IF_FREQ 38.90 622 static int australia[] = { 623 83, (int)(IF_FREQ * FREQFACTOR), 0, 624 28, (int)(527.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 625 10, (int)(209.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 626 6, (int)(175.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 627 4, (int)( 95.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 628 3, (int)( 86.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 629 1, (int)( 57.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 630 0 631 }; 632 #undef OFFSET 633 #undef IF_FREQ 634 635 /* 636 * France broadcast channels 637 */ 638 #define OFFSET 8.00 639 #define IF_FREQ 38.90 640 static int france[] = { 641 69, (int)(IF_FREQ * FREQFACTOR), 0, 642 21, (int)(471.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 21 -> 69 */ 643 5, (int)(176.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 5 -> 10 */ 644 4, (int)( 63.75 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 4 */ 645 3, (int)( 60.50 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 3 */ 646 1, (int)( 47.75 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 1 2 */ 647 0 648 }; 649 #undef OFFSET 650 #undef IF_FREQ 651 652 static struct { 653 int *ptr; 654 char name[BT848_MAX_CHNLSET_NAME_LEN]; 655 } freqTable[] = { 656 {NULL, ""}, 657 {nabcst, "nabcst"}, 658 {irccable, "cableirc"}, 659 {hrccable, "cablehrc"}, 660 {weurope, "weurope"}, 661 {jpnbcst, "jpnbcst"}, 662 {jpncable, "jpncable"}, 663 {xussr, "xussr"}, 664 {australia, "australia"}, 665 {france, "france"}, 666 667 }; 668 669 #define TBL_CHNL freqTable[ bktr->tuner.chnlset ].ptr[ x ] 670 #define TBL_BASE_FREQ freqTable[ bktr->tuner.chnlset ].ptr[ x + 1 ] 671 #define TBL_OFFSET freqTable[ bktr->tuner.chnlset ].ptr[ x + 2 ] 672 static int 673 frequency_lookup( bktr_ptr_t bktr, int channel ) 674 { 675 int x; 676 677 /* check for "> MAX channel" */ 678 x = 0; 679 if ( channel > TBL_CHNL ) 680 return( -1 ); 681 682 /* search the table for data */ 683 for ( x = 3; TBL_CHNL; x += 3 ) { 684 if ( channel >= TBL_CHNL ) { 685 return( TBL_BASE_FREQ + 686 ((channel - TBL_CHNL) * TBL_OFFSET) ); 687 } 688 } 689 690 /* not found, must be below the MIN channel */ 691 return( -1 ); 692 } 693 #undef TBL_OFFSET 694 #undef TBL_BASE_FREQ 695 #undef TBL_CHNL 696 697 698 #define TBL_IF freqTable[ bktr->tuner.chnlset ].ptr[ 1 ] 699 700 701 /* Initialise the tuner structures in the bktr_softc */ 702 /* This is needed as the tuner details are no longer globally declared */ 703 704 void select_tuner( bktr_ptr_t bktr, int tuner_type ) { 705 if (tuner_type < Bt848_MAX_TUNER) { 706 bktr->card.tuner = &tuners[ tuner_type ]; 707 } else { 708 bktr->card.tuner = NULL; 709 } 710 } 711 712 /* 713 * Tuner Notes: 714 * Programming the tuner properly is quite complicated. 715 * Here are some notes, based on a FM1246 data sheet for a PAL-I tuner. 716 * The tuner (front end) covers 45.75 Mhz - 855.25 Mhz and an FM band of 717 * 87.5 Mhz to 108.0 Mhz. 718 * 719 * RF and IF. RF = radio frequencies, it is the transmitted signal. 720 * IF is the Intermediate Frequency (the offset from the base 721 * signal where the video, color, audio and NICAM signals are. 722 * 723 * Eg, Picture at 38.9 Mhz, Colour at 34.47 MHz, sound at 32.9 MHz 724 * NICAM at 32.348 Mhz. 725 * Strangely enough, there is an IF (intermediate frequency) for 726 * FM Radio which is 10.7 Mhz. 727 * 728 * The tuner also works in Bands. Philips bands are 729 * FM radio band 87.50 to 108.00 MHz 730 * Low band 45.75 to 170.00 MHz 731 * Mid band 170.00 to 450.00 MHz 732 * High band 450.00 to 855.25 MHz 733 * 734 * 735 * Now we need to set the PLL on the tuner to the required freuqncy. 736 * It has a programmable divisor. 737 * For TV we want 738 * N = 16 (freq RF(pc) + freq IF(pc)) pc is picture carrier and RF and IF 739 * are in MHz. 740 741 * For RADIO we want a different equation. 742 * freq IF is 10.70 MHz (so the data sheet tells me) 743 * N = (freq RF + freq IF) / step size 744 * The step size must be set to 50 khz (so the data sheet tells me) 745 * (note this is 50 kHz, the other things are in MHz) 746 * so we end up with N = 20x(freq RF + 10.7) 747 * 748 */ 749 750 #define LOW_BAND 0 751 #define MID_BAND 1 752 #define HIGH_BAND 2 753 #define FM_RADIO_BAND 3 754 755 756 /* Check if these are correct for other than Philips PAL */ 757 #define STATUSBIT_COLD 0x80 758 #define STATUSBIT_LOCK 0x40 759 #define STATUSBIT_TV 0x20 760 #define STATUSBIT_STEREO 0x10 /* valid if FM (aka not TV) */ 761 #define STATUSBIT_ADC 0x07 762 763 /* 764 * set the frequency of the tuner 765 * If 'type' is TV_FREQUENCY, the frequency is freq MHz*16 766 * If 'type' is FM_RADIO_FREQUENCY, the frequency is freq MHz * 100 767 * (note *16 gives is 4 bits of fraction, eg steps of nnn.0625) 768 * 769 */ 770 int 771 tv_freq( bktr_ptr_t bktr, int frequency, int type ) 772 { 773 const struct TUNER* tuner; 774 u_char addr; 775 u_char control; 776 u_char band; 777 int N; 778 int band_select = 0; 779 #if defined( TEST_TUNER_AFC ) 780 int oldFrequency, afcDelta; 781 #endif 782 783 tuner = bktr->card.tuner; 784 if ( tuner == NULL ) 785 return( -1 ); 786 787 if (type == TV_FREQUENCY) { 788 /* 789 * select the band based on frequency 790 * XXX FIXME: get the cross-over points from the tuner struct 791 */ 792 if ( frequency < (160 * FREQFACTOR ) ) 793 band_select = LOW_BAND; 794 else if ( frequency < (454 * FREQFACTOR ) ) 795 band_select = MID_BAND; 796 else 797 band_select = HIGH_BAND; 798 799 #if defined( TEST_TUNER_AFC ) 800 if ( bktr->tuner.afc ) 801 frequency -= 4; 802 #endif 803 /* 804 * N = 16 * { fRF(pc) + fIF(pc) } 805 * or N = 16* fRF(pc) + 16*fIF(pc) } 806 * where: 807 * pc is picture carrier, fRF & fIF are in MHz 808 * 809 * fortunatly, frequency is passed in as MHz * 16 810 * and the TBL_IF frequency is also stored in MHz * 16 811 */ 812 N = frequency + TBL_IF; 813 814 /* set the address of the PLL */ 815 addr = bktr->card.tuner_pllAddr; 816 control = tuner->pllControl[ band_select ]; 817 band = tuner->bandAddrs[ band_select ]; 818 819 if(!(band && control)) /* Don't try to set un- */ 820 return(-1); /* supported modes. */ 821 822 if ( frequency > bktr->tuner.frequency ) { 823 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff ); 824 i2cWrite( bktr, addr, control, band ); 825 } 826 else { 827 i2cWrite( bktr, addr, control, band ); 828 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff ); 829 } 830 831 #if defined( TUNER_AFC ) 832 if ( bktr->tuner.afc == TRUE ) { 833 #if defined( TEST_TUNER_AFC ) 834 oldFrequency = frequency; 835 #endif 836 if ( (N = do_afc( bktr, addr, N )) < 0 ) { 837 /* AFC failed, restore requested frequency */ 838 N = frequency + TBL_IF; 839 #if defined( TEST_TUNER_AFC ) 840 printf("do_afc: failed to lock\n"); 841 #endif 842 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff ); 843 } 844 else 845 frequency = N - TBL_IF; 846 #if defined( TEST_TUNER_AFC ) 847 printf("do_afc: returned freq %d (%d %% %d)\n", frequency, frequency / 16, frequency % 16); 848 afcDelta = frequency - oldFrequency; 849 printf("changed by: %d clicks (%d mod %d)\n", afcDelta, afcDelta / 16, afcDelta % 16); 850 #endif 851 } 852 #endif /* TUNER_AFC */ 853 854 bktr->tuner.frequency = frequency; 855 } 856 857 if ( type == FM_RADIO_FREQUENCY ) { 858 band_select = FM_RADIO_BAND; 859 860 /* 861 * N = { fRF(pc) + fIF(pc) }/step_size 862 * The step size is 50kHz for FM radio. 863 * (eg after 102.35MHz comes 102.40 MHz) 864 * fIF is 10.7 MHz (as detailed in the specs) 865 * 866 * frequency is passed in as MHz * 100 867 * 868 * So, we have N = (frequency/100 + 10.70) /(50/1000) 869 */ 870 N = (frequency + 1070)/5; 871 872 /* set the address of the PLL */ 873 addr = bktr->card.tuner_pllAddr; 874 control = tuner->pllControl[ band_select ]; 875 band = tuner->bandAddrs[ band_select ]; 876 877 if(!(band && control)) /* Don't try to set un- */ 878 return(-1); /* supported modes. */ 879 880 band |= bktr->tuner.radio_mode; /* tuner.radio_mode is set in 881 * the ioctls RADIO_SETMODE 882 * and RADIO_GETMODE */ 883 884 i2cWrite( bktr, addr, control, band ); 885 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff ); 886 887 bktr->tuner.frequency = (N * 5) - 1070; 888 889 890 } 891 892 893 return( 0 ); 894 } 895 896 897 898 #if defined( TUNER_AFC ) 899 /* 900 * 901 */ 902 int 903 do_afc( bktr_ptr_t bktr, int addr, int frequency ) 904 { 905 int step; 906 int status; 907 int origFrequency; 908 909 origFrequency = frequency; 910 911 /* wait for first setting to take effect */ 912 tsleep( BKTR_SLEEP, PZERO, "tuning", hz/8 ); 913 914 if ( (status = i2cRead( bktr, addr + 1 )) < 0 ) 915 return( -1 ); 916 917 #if defined( TEST_TUNER_AFC ) 918 printf( "\nOriginal freq: %d, status: 0x%02x\n", frequency, status ); 919 #endif 920 for ( step = 0; step < AFC_MAX_STEP; ++step ) { 921 if ( (status = i2cRead( bktr, addr + 1 )) < 0 ) 922 goto fubar; 923 if ( !(status & 0x40) ) { 924 #if defined( TEST_TUNER_AFC ) 925 printf( "no lock!\n" ); 926 #endif 927 goto fubar; 928 } 929 930 switch( status & AFC_BITS ) { 931 case AFC_FREQ_CENTERED: 932 #if defined( TEST_TUNER_AFC ) 933 printf( "Centered, freq: %d, status: 0x%02x\n", frequency, status ); 934 #endif 935 return( frequency ); 936 937 case AFC_FREQ_MINUS_125: 938 case AFC_FREQ_MINUS_62: 939 #if defined( TEST_TUNER_AFC ) 940 printf( "Low, freq: %d, status: 0x%02x\n", frequency, status ); 941 #endif 942 --frequency; 943 break; 944 945 case AFC_FREQ_PLUS_62: 946 case AFC_FREQ_PLUS_125: 947 #if defined( TEST_TUNER_AFC ) 948 printf( "Hi, freq: %d, status: 0x%02x\n", frequency, status ); 949 #endif 950 ++frequency; 951 break; 952 } 953 954 i2cWrite( bktr, addr, 955 (frequency>>8) & 0x7f, frequency & 0xff ); 956 DELAY( AFC_DELAY ); 957 } 958 959 fubar: 960 i2cWrite( bktr, addr, 961 (origFrequency>>8) & 0x7f, origFrequency & 0xff ); 962 963 return( -1 ); 964 } 965 #endif /* TUNER_AFC */ 966 #undef TBL_IF 967 968 969 /* 970 * Get the Tuner status and signal strength 971 */ 972 int get_tuner_status( bktr_ptr_t bktr ) { 973 return i2cRead( bktr, bktr->card.tuner_pllAddr + 1 ); 974 } 975 976 /* 977 * set the channel of the tuner 978 */ 979 int 980 tv_channel( bktr_ptr_t bktr, int channel ) 981 { 982 int frequency; 983 984 /* calculate the frequency according to tuner type */ 985 if ( (frequency = frequency_lookup( bktr, channel )) < 0 ) 986 return( -1 ); 987 988 /* set the new frequency */ 989 if ( tv_freq( bktr, frequency, TV_FREQUENCY ) < 0 ) 990 return( -1 ); 991 992 /* OK to update records */ 993 return( (bktr->tuner.channel = channel) ); 994 } 995 996 /* 997 * get channelset name 998 */ 999 int 1000 tuner_getchnlset(struct bktr_chnlset *chnlset) 1001 { 1002 if (( chnlset->index < CHNLSET_MIN ) || 1003 ( chnlset->index > CHNLSET_MAX )) 1004 return( EINVAL ); 1005 1006 memcpy(&chnlset->name, &freqTable[chnlset->index].name, 1007 BT848_MAX_CHNLSET_NAME_LEN); 1008 1009 chnlset->max_channel=freqTable[chnlset->index].ptr[0]; 1010 return( 0 ); 1011 } 1012
Indexes created Tue Sep 30 20:09:53 GMT 2025