bktr_tuner.c revision 1.4
1 /* $NetBSD: bktr_tuner.c,v 1.4 2000/06/25 17:47:39 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 62 #if (__FreeBSD_version >=300000) 63 #include <machine/bus_memio.h> /* for bus space */ 64 #include <machine/bus.h> 65 #include <sys/bus.h> 66 #endif 67 #endif 68 69 #ifdef __NetBSD__ 70 #include <dev/ic/bt8xx.h> /* NetBSD .h file location */ 71 #include <dev/pci/bktr/bktr_reg.h> 72 #include <dev/pci/bktr/bktr_tuner.h> 73 #include <dev/pci/bktr/bktr_card.h> 74 #include <dev/pci/bktr/bktr_core.h> 75 #else 76 #include <machine/ioctl_meteor.h> /* Traditional .h file location */ 77 #include <machine/ioctl_bt848.h> /* extensions to ioctl_meteor.h */ 78 #include <dev/bktr/bktr_reg.h> 79 #include <dev/bktr/bktr_tuner.h> 80 #include <dev/bktr/bktr_card.h> 81 #include <dev/bktr/bktr_core.h> 82 #endif 83 84 85 86 #if defined( TUNER_AFC ) 87 #define AFC_DELAY 10000 /* 10 millisend delay */ 88 #define AFC_BITS 0x07 89 #define AFC_FREQ_MINUS_125 0x00 90 #define AFC_FREQ_MINUS_62 0x01 91 #define AFC_FREQ_CENTERED 0x02 92 #define AFC_FREQ_PLUS_62 0x03 93 #define AFC_FREQ_PLUS_125 0x04 94 #define AFC_MAX_STEP (5 * FREQFACTOR) /* no more than 5 MHz */ 95 #endif /* TUNER_AFC */ 96 97 98 #define TTYPE_XXX 0 99 #define TTYPE_NTSC 1 100 #define TTYPE_NTSC_J 2 101 #define TTYPE_PAL 3 102 #define TTYPE_PAL_M 4 103 #define TTYPE_PAL_N 5 104 #define TTYPE_SECAM 6 105 106 #define TSA552x_CB_MSB (0x80) 107 #define TSA552x_CB_CP (1<<6) /* set this for fast tuning */ 108 #define TSA552x_CB_T2 (1<<5) /* test mode - Normally set to 0 */ 109 #define TSA552x_CB_T1 (1<<4) /* test mode - Normally set to 0 */ 110 #define TSA552x_CB_T0 (1<<3) /* test mode - Normally set to 1 */ 111 #define TSA552x_CB_RSA (1<<2) /* 0 for 31.25 khz, 1 for 62.5 kHz */ 112 #define TSA552x_CB_RSB (1<<1) /* 0 for FM 50kHz steps, 1 = Use RSA*/ 113 #define TSA552x_CB_OS (1<<0) /* Set to 0 for normal operation */ 114 115 #define TSA552x_RADIO (TSA552x_CB_MSB | \ 116 TSA552x_CB_T0) 117 118 /* raise the charge pump voltage for fast tuning */ 119 #define TSA552x_FCONTROL (TSA552x_CB_MSB | \ 120 TSA552x_CB_CP | \ 121 TSA552x_CB_T0 | \ 122 TSA552x_CB_RSA | \ 123 TSA552x_CB_RSB) 124 125 /* lower the charge pump voltage for better residual oscillator FM */ 126 #define TSA552x_SCONTROL (TSA552x_CB_MSB | \ 127 TSA552x_CB_T0 | \ 128 TSA552x_CB_RSA | \ 129 TSA552x_CB_RSB) 130 131 /* The control value for the ALPS TSCH5 Tuner */ 132 #define TSCH5_FCONTROL 0x82 133 #define TSCH5_RADIO 0x86 134 135 /* The control value for the ALPS TSBH1 Tuner */ 136 #define TSBH1_FCONTROL 0xce 137 138 139 static const struct TUNER tuners[] = { 140 /* XXX FIXME: fill in the band-switch crosspoints */ 141 /* NO_TUNER */ 142 { "<no>", /* the 'name' */ 143 TTYPE_XXX, /* input type */ 144 { 0x00, /* control byte for Tuner PLL */ 145 0x00, 146 0x00, 147 0x00 }, 148 { 0x00, 0x00 }, /* band-switch crosspoints */ 149 { 0x00, 0x00, 0x00,0x00} }, /* the band-switch values */ 150 151 /* TEMIC_NTSC */ 152 { "Temic NTSC", /* the 'name' */ 153 TTYPE_NTSC, /* 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 /* TEMIC_PAL */ 162 { "Temic PAL", /* the 'name' */ 163 TTYPE_PAL, /* 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 { 0x02, 0x04, 0x01, 0x00 } }, /* the band-switch values */ 170 171 /* TEMIC_SECAM */ 172 { "Temic SECAM", /* the 'name' */ 173 TTYPE_SECAM, /* 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 { 0x02, 0x04, 0x01,0x00 } }, /* the band-switch values */ 180 181 /* PHILIPS_NTSC */ 182 { "Philips NTSC", /* the 'name' */ 183 TTYPE_NTSC, /* 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 { 0xa0, 0x90, 0x30, 0x00 } }, /* the band-switch values */ 190 191 /* PHILIPS_PAL */ 192 { "Philips PAL", /* 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 { 0xa0, 0x90, 0x30, 0x00 } }, /* the band-switch values */ 200 201 /* PHILIPS_SECAM */ 202 { "Philips SECAM", /* the 'name' */ 203 TTYPE_SECAM, /* 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 { 0xa7, 0x97, 0x37, 0x00 } }, /* the band-switch values */ 210 211 /* TEMIC_PAL I */ 212 { "Temic PAL I", /* the 'name' */ 213 TTYPE_PAL, /* input type */ 214 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 215 TSA552x_SCONTROL, 216 TSA552x_SCONTROL, 217 0x00 }, 218 { 0x00, 0x00 }, /* band-switch crosspoints */ 219 { 0x02, 0x04, 0x01,0x00 } }, /* the band-switch values */ 220 221 /* PHILIPS_PALI */ 222 { "Philips PAL I", /* the 'name' */ 223 TTYPE_PAL, /* input type */ 224 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 225 TSA552x_SCONTROL, 226 TSA552x_SCONTROL, 227 0x00 }, 228 { 0x00, 0x00 }, /* band-switch crosspoints */ 229 { 0xa0, 0x90, 0x30,0x00 } }, /* the band-switch values */ 230 231 /* PHILIPS_FR1236_NTSC */ 232 { "Philips FR1236 NTSC FM", /* the 'name' */ 233 TTYPE_NTSC, /* 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 { 0xa0, 0x90, 0x30,0xa4 } }, /* the band-switch values */ 240 241 /* PHILIPS_FR1216_PAL */ 242 { "Philips FR1216 PAL FM" , /* the 'name' */ 243 TTYPE_PAL, /* input type */ 244 { TSA552x_FCONTROL, /* control byte for Tuner PLL */ 245 TSA552x_FCONTROL, 246 TSA552x_FCONTROL, 247 TSA552x_RADIO }, 248 { 0x00, 0x00 }, /* band-switch crosspoints */ 249 { 0xa0, 0x90, 0x30, 0xa4 } }, /* the band-switch values */ 250 251 /* PHILIPS_FR1236_SECAM */ 252 { "Philips FR1236 SECAM FM", /* the 'name' */ 253 TTYPE_SECAM, /* input type */ 254 { TSA552x_FCONTROL, /* control byte for Tuner PLL */ 255 TSA552x_FCONTROL, 256 TSA552x_FCONTROL, 257 TSA552x_RADIO }, 258 { 0x00, 0x00 }, /* band-switch crosspoints */ 259 { 0xa7, 0x97, 0x37, 0xa4 } }, /* the band-switch values */ 260 261 /* ALPS TSCH5 NTSC */ 262 { "ALPS TSCH5 NTSC FM", /* the 'name' */ 263 TTYPE_NTSC, /* input type */ 264 { TSCH5_FCONTROL, /* control byte for Tuner PLL */ 265 TSCH5_FCONTROL, 266 TSCH5_FCONTROL, 267 TSCH5_RADIO }, 268 { 0x00, 0x00 }, /* band-switch crosspoints */ 269 { 0x14, 0x12, 0x11, 0x04 } }, /* the band-switch values */ 270 271 /* ALPS TSBH1 NTSC */ 272 { "ALPS TSBH1 NTSC", /* the 'name' */ 273 TTYPE_NTSC, /* input type */ 274 { TSBH1_FCONTROL, /* control byte for Tuner PLL */ 275 TSBH1_FCONTROL, 276 TSBH1_FCONTROL, 277 0x00 }, 278 { 0x00, 0x00 }, /* band-switch crosspoints */ 279 { 0x01, 0x02, 0x08, 0x00 } } /* the band-switch values */ 280 }; 281 282 283 /* scaling factor for frequencies expressed as ints */ 284 #define FREQFACTOR 16 285 286 /* 287 * Format: 288 * entry 0: MAX legal channel 289 * entry 1: IF frequency 290 * expressed as fi{mHz} * 16, 291 * eg 45.75mHz == 45.75 * 16 = 732 292 * entry 2: [place holder/future] 293 * entry 3: base of channel record 0 294 * entry 3 + (x*3): base of channel record 'x' 295 * entry LAST: NULL channel entry marking end of records 296 * 297 * Record: 298 * int 0: base channel 299 * int 1: frequency of base channel, 300 * expressed as fb{mHz} * 16, 301 * int 2: offset frequency between channels, 302 * expressed as fo{mHz} * 16, 303 */ 304 305 /* 306 * North American Broadcast Channels: 307 * 308 * 2: 55.25 mHz - 4: 67.25 mHz 309 * 5: 77.25 mHz - 6: 83.25 mHz 310 * 7: 175.25 mHz - 13: 211.25 mHz 311 * 14: 471.25 mHz - 83: 885.25 mHz 312 * 313 * IF freq: 45.75 mHz 314 */ 315 #define OFFSET 6.00 316 static int nabcst[] = { 317 83, (int)( 45.75 * FREQFACTOR), 0, 318 14, (int)(471.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 319 7, (int)(175.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 320 5, (int)( 77.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 321 2, (int)( 55.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 322 0 323 }; 324 #undef OFFSET 325 326 /* 327 * North American Cable Channels, IRC: 328 * 329 * 2: 55.25 mHz - 4: 67.25 mHz 330 * 5: 77.25 mHz - 6: 83.25 mHz 331 * 7: 175.25 mHz - 13: 211.25 mHz 332 * 14: 121.25 mHz - 22: 169.25 mHz 333 * 23: 217.25 mHz - 94: 643.25 mHz 334 * 95: 91.25 mHz - 99: 115.25 mHz 335 * 336 * IF freq: 45.75 mHz 337 */ 338 #define OFFSET 6.00 339 static int irccable[] = { 340 116, (int)( 45.75 * FREQFACTOR), 0, 341 100, (int)(649.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 342 95, (int)( 91.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 343 23, (int)(217.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 344 14, (int)(121.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 345 7, (int)(175.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 346 5, (int)( 77.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 347 2, (int)( 55.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 348 0 349 }; 350 #undef OFFSET 351 352 /* 353 * North American Cable Channels, HRC: 354 * 355 * 2: 54 mHz - 4: 66 mHz 356 * 5: 78 mHz - 6: 84 mHz 357 * 7: 174 mHz - 13: 210 mHz 358 * 14: 120 mHz - 22: 168 mHz 359 * 23: 216 mHz - 94: 642 mHz 360 * 95: 90 mHz - 99: 114 mHz 361 * 362 * IF freq: 45.75 mHz 363 */ 364 #define OFFSET 6.00 365 static int hrccable[] = { 366 116, (int)( 45.75 * FREQFACTOR), 0, 367 100, (int)(648.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 368 95, (int)( 90.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 369 23, (int)(216.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 370 14, (int)(120.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 371 7, (int)(174.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 372 5, (int)( 78.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 373 2, (int)( 54.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 374 0 375 }; 376 #undef OFFSET 377 378 /* 379 * Western European broadcast channels: 380 * 381 * (there are others that appear to vary between countries - rmt) 382 * 383 * here's the table Philips provides: 384 * caution, some of the offsets don't compute... 385 * 386 * 1 4525 700 N21 387 * 388 * 2 4825 700 E2 389 * 3 5525 700 E3 390 * 4 6225 700 E4 391 * 392 * 5 17525 700 E5 393 * 6 18225 700 E6 394 * 7 18925 700 E7 395 * 8 19625 700 E8 396 * 9 20325 700 E9 397 * 10 21025 700 E10 398 * 11 21725 700 E11 399 * 12 22425 700 E12 400 * 401 * 13 5375 700 ITA 402 * 14 6225 700 ITB 403 * 404 * 15 8225 700 ITC 405 * 406 * 16 17525 700 ITD 407 * 17 18325 700 ITE 408 * 409 * 18 19225 700 ITF 410 * 19 20125 700 ITG 411 * 20 21025 700 ITH 412 * 413 * 21 47125 800 E21 414 * 22 47925 800 E22 415 * 23 48725 800 E23 416 * 24 49525 800 E24 417 * 25 50325 800 E25 418 * 26 51125 800 E26 419 * 27 51925 800 E27 420 * 28 52725 800 E28 421 * 29 53525 800 E29 422 * 30 54325 800 E30 423 * 31 55125 800 E31 424 * 32 55925 800 E32 425 * 33 56725 800 E33 426 * 34 57525 800 E34 427 * 35 58325 800 E35 428 * 36 59125 800 E36 429 * 37 59925 800 E37 430 * 38 60725 800 E38 431 * 39 61525 800 E39 432 * 40 62325 800 E40 433 * 41 63125 800 E41 434 * 42 63925 800 E42 435 * 43 64725 800 E43 436 * 44 65525 800 E44 437 * 45 66325 800 E45 438 * 46 67125 800 E46 439 * 47 67925 800 E47 440 * 48 68725 800 E48 441 * 49 69525 800 E49 442 * 50 70325 800 E50 443 * 51 71125 800 E51 444 * 52 71925 800 E52 445 * 53 72725 800 E53 446 * 54 73525 800 E54 447 * 55 74325 800 E55 448 * 56 75125 800 E56 449 * 57 75925 800 E57 450 * 58 76725 800 E58 451 * 59 77525 800 E59 452 * 60 78325 800 E60 453 * 61 79125 800 E61 454 * 62 79925 800 E62 455 * 63 80725 800 E63 456 * 64 81525 800 E64 457 * 65 82325 800 E65 458 * 66 83125 800 E66 459 * 67 83925 800 E67 460 * 68 84725 800 E68 461 * 69 85525 800 E69 462 * 463 * 70 4575 800 IA 464 * 71 5375 800 IB 465 * 72 6175 800 IC 466 * 467 * 74 6925 700 S01 468 * 75 7625 700 S02 469 * 76 8325 700 S03 470 * 471 * 80 10525 700 S1 472 * 81 11225 700 S2 473 * 82 11925 700 S3 474 * 83 12625 700 S4 475 * 84 13325 700 S5 476 * 85 14025 700 S6 477 * 86 14725 700 S7 478 * 87 15425 700 S8 479 * 88 16125 700 S9 480 * 89 16825 700 S10 481 * 90 23125 700 S11 482 * 91 23825 700 S12 483 * 92 24525 700 S13 484 * 93 25225 700 S14 485 * 94 25925 700 S15 486 * 95 26625 700 S16 487 * 96 27325 700 S17 488 * 97 28025 700 S18 489 * 98 28725 700 S19 490 * 99 29425 700 S20 491 * 492 * 493 * Channels S21 - S41 are taken from 494 * http://gemma.apple.com:80/dev/technotes/tn/tn1012.html 495 * 496 * 100 30325 800 S21 497 * 101 31125 800 S22 498 * 102 31925 800 S23 499 * 103 32725 800 S24 500 * 104 33525 800 S25 501 * 105 34325 800 S26 502 * 106 35125 800 S27 503 * 107 35925 800 S28 504 * 108 36725 800 S29 505 * 109 37525 800 S30 506 * 110 38325 800 S31 507 * 111 39125 800 S32 508 * 112 39925 800 S33 509 * 113 40725 800 S34 510 * 114 41525 800 S35 511 * 115 42325 800 S36 512 * 116 43125 800 S37 513 * 117 43925 800 S38 514 * 118 44725 800 S39 515 * 119 45525 800 S40 516 * 120 46325 800 S41 517 * 518 * 121 3890 000 IFFREQ 519 * 520 */ 521 static int weurope[] = { 522 121, (int)( 38.90 * FREQFACTOR), 0, 523 100, (int)(303.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 524 90, (int)(231.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR), 525 80, (int)(105.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR), 526 74, (int)( 69.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR), 527 21, (int)(471.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 528 17, (int)(183.25 * FREQFACTOR), (int)(9.00 * FREQFACTOR), 529 16, (int)(175.25 * FREQFACTOR), (int)(9.00 * FREQFACTOR), 530 15, (int)(82.25 * FREQFACTOR), (int)(8.50 * FREQFACTOR), 531 13, (int)(53.75 * FREQFACTOR), (int)(8.50 * FREQFACTOR), 532 5, (int)(175.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR), 533 2, (int)(48.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR), 534 0 535 }; 536 537 /* 538 * Japanese Broadcast Channels: 539 * 540 * 1: 91.25MHz - 3: 103.25MHz 541 * 4: 171.25MHz - 7: 189.25MHz 542 * 8: 193.25MHz - 12: 217.25MHz (VHF) 543 * 13: 471.25MHz - 62: 765.25MHz (UHF) 544 * 545 * IF freq: 45.75 mHz 546 * OR 547 * IF freq: 58.75 mHz 548 */ 549 #define OFFSET 6.00 550 #define IF_FREQ 45.75 551 static int jpnbcst[] = { 552 62, (int)(IF_FREQ * FREQFACTOR), 0, 553 13, (int)(471.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 554 8, (int)(193.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 555 4, (int)(171.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 556 1, (int)( 91.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 557 0 558 }; 559 #undef IF_FREQ 560 #undef OFFSET 561 562 /* 563 * Japanese Cable Channels: 564 * 565 * 1: 91.25MHz - 3: 103.25MHz 566 * 4: 171.25MHz - 7: 189.25MHz 567 * 8: 193.25MHz - 12: 217.25MHz 568 * 13: 109.25MHz - 21: 157.25MHz 569 * 22: 165.25MHz 570 * 23: 223.25MHz - 63: 463.25MHz 571 * 572 * IF freq: 45.75 mHz 573 */ 574 #define OFFSET 6.00 575 #define IF_FREQ 45.75 576 static int jpncable[] = { 577 63, (int)(IF_FREQ * FREQFACTOR), 0, 578 23, (int)(223.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 579 22, (int)(165.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 580 13, (int)(109.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 581 8, (int)(193.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 582 4, (int)(171.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 583 1, (int)( 91.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 584 0 585 }; 586 #undef IF_FREQ 587 #undef OFFSET 588 589 /* 590 * xUSSR Broadcast Channels: 591 * 592 * 1: 49.75MHz - 2: 59.25MHz 593 * 3: 77.25MHz - 5: 93.25MHz 594 * 6: 175.25MHz - 12: 223.25MHz 595 * 13-20 - not exist 596 * 21: 471.25MHz - 34: 575.25MHz 597 * 35: 583.25MHz - 69: 855.25MHz 598 * 599 * Cable channels 600 * 601 * 70: 111.25MHz - 77: 167.25MHz 602 * 78: 231.25MHz -107: 463.25MHz 603 * 604 * IF freq: 38.90 MHz 605 */ 606 #define IF_FREQ 38.90 607 static int xussr[] = { 608 107, (int)(IF_FREQ * FREQFACTOR), 0, 609 78, (int)(231.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 610 70, (int)(111.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 611 35, (int)(583.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 612 21, (int)(471.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 613 6, (int)(175.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 614 3, (int)( 77.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 615 1, (int)( 49.75 * FREQFACTOR), (int)(9.50 * FREQFACTOR), 616 0 617 }; 618 #undef IF_FREQ 619 620 /* 621 * Australian broadcast channels 622 */ 623 #define OFFSET 7.00 624 #define IF_FREQ 38.90 625 static int australia[] = { 626 83, (int)(IF_FREQ * FREQFACTOR), 0, 627 28, (int)(527.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 628 10, (int)(209.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 629 6, (int)(175.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 630 4, (int)( 95.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 631 3, (int)( 86.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 632 1, (int)( 57.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 633 0 634 }; 635 #undef OFFSET 636 #undef IF_FREQ 637 638 /* 639 * France broadcast channels 640 */ 641 #define OFFSET 8.00 642 #define IF_FREQ 38.90 643 static int france[] = { 644 69, (int)(IF_FREQ * FREQFACTOR), 0, 645 21, (int)(471.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 21 -> 69 */ 646 5, (int)(176.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 5 -> 10 */ 647 4, (int)( 63.75 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 4 */ 648 3, (int)( 60.50 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 3 */ 649 1, (int)( 47.75 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 1 2 */ 650 0 651 }; 652 #undef OFFSET 653 #undef IF_FREQ 654 655 static struct { 656 int *ptr; 657 char name[BT848_MAX_CHNLSET_NAME_LEN]; 658 } freqTable[] = { 659 {NULL, ""}, 660 {nabcst, "nabcst"}, 661 {irccable, "cableirc"}, 662 {hrccable, "cablehrc"}, 663 {weurope, "weurope"}, 664 {jpnbcst, "jpnbcst"}, 665 {jpncable, "jpncable"}, 666 {xussr, "xussr"}, 667 {australia, "australia"}, 668 {france, "france"}, 669 670 }; 671 672 #define TBL_CHNL freqTable[ bktr->tuner.chnlset ].ptr[ x ] 673 #define TBL_BASE_FREQ freqTable[ bktr->tuner.chnlset ].ptr[ x + 1 ] 674 #define TBL_OFFSET freqTable[ bktr->tuner.chnlset ].ptr[ x + 2 ] 675 static int 676 frequency_lookup( bktr_ptr_t bktr, int channel ) 677 { 678 int x; 679 680 /* check for "> MAX channel" */ 681 x = 0; 682 if ( channel > TBL_CHNL ) 683 return( -1 ); 684 685 /* search the table for data */ 686 for ( x = 3; TBL_CHNL; x += 3 ) { 687 if ( channel >= TBL_CHNL ) { 688 return( TBL_BASE_FREQ + 689 ((channel - TBL_CHNL) * TBL_OFFSET) ); 690 } 691 } 692 693 /* not found, must be below the MIN channel */ 694 return( -1 ); 695 } 696 #undef TBL_OFFSET 697 #undef TBL_BASE_FREQ 698 #undef TBL_CHNL 699 700 701 #define TBL_IF freqTable[ bktr->tuner.chnlset ].ptr[ 1 ] 702 703 704 /* Initialise the tuner structures in the bktr_softc */ 705 /* This is needed as the tuner details are no longer globally declared */ 706 707 void select_tuner( bktr_ptr_t bktr, int tuner_type ) { 708 if (tuner_type < Bt848_MAX_TUNER) { 709 bktr->card.tuner = &tuners[ tuner_type ]; 710 } else { 711 bktr->card.tuner = NULL; 712 } 713 } 714 715 /* 716 * Tuner Notes: 717 * Programming the tuner properly is quite complicated. 718 * Here are some notes, based on a FM1246 data sheet for a PAL-I tuner. 719 * The tuner (front end) covers 45.75 Mhz - 855.25 Mhz and an FM band of 720 * 87.5 Mhz to 108.0 Mhz. 721 * 722 * RF and IF. RF = radio frequencies, it is the transmitted signal. 723 * IF is the Intermediate Frequency (the offset from the base 724 * signal where the video, color, audio and NICAM signals are. 725 * 726 * Eg, Picture at 38.9 Mhz, Colour at 34.47 MHz, sound at 32.9 MHz 727 * NICAM at 32.348 Mhz. 728 * Strangely enough, there is an IF (intermediate frequency) for 729 * FM Radio which is 10.7 Mhz. 730 * 731 * The tuner also works in Bands. Philips bands are 732 * FM radio band 87.50 to 108.00 MHz 733 * Low band 45.75 to 170.00 MHz 734 * Mid band 170.00 to 450.00 MHz 735 * High band 450.00 to 855.25 MHz 736 * 737 * 738 * Now we need to set the PLL on the tuner to the required freuqncy. 739 * It has a programmable divisor. 740 * For TV we want 741 * N = 16 (freq RF(pc) + freq IF(pc)) pc is picture carrier and RF and IF 742 * are in MHz. 743 744 * For RADIO we want a different equation. 745 * freq IF is 10.70 MHz (so the data sheet tells me) 746 * N = (freq RF + freq IF) / step size 747 * The step size must be set to 50 khz (so the data sheet tells me) 748 * (note this is 50 kHz, the other things are in MHz) 749 * so we end up with N = 20x(freq RF + 10.7) 750 * 751 */ 752 753 #define LOW_BAND 0 754 #define MID_BAND 1 755 #define HIGH_BAND 2 756 #define FM_RADIO_BAND 3 757 758 759 /* Check if these are correct for other than Philips PAL */ 760 #define STATUSBIT_COLD 0x80 761 #define STATUSBIT_LOCK 0x40 762 #define STATUSBIT_TV 0x20 763 #define STATUSBIT_STEREO 0x10 /* valid if FM (aka not TV) */ 764 #define STATUSBIT_ADC 0x07 765 766 /* 767 * set the frequency of the tuner 768 * If 'type' is TV_FREQUENCY, the frequency is freq MHz*16 769 * If 'type' is FM_RADIO_FREQUENCY, the frequency is freq MHz * 100 770 * (note *16 gives is 4 bits of fraction, eg steps of nnn.0625) 771 * 772 */ 773 int 774 tv_freq( bktr_ptr_t bktr, int frequency, int type ) 775 { 776 const struct TUNER* tuner; 777 u_char addr; 778 u_char control; 779 u_char band; 780 int N; 781 int band_select = 0; 782 #if defined( TEST_TUNER_AFC ) 783 int oldFrequency, afcDelta; 784 #endif 785 786 tuner = bktr->card.tuner; 787 if ( tuner == NULL ) 788 return( -1 ); 789 790 if (type == TV_FREQUENCY) { 791 /* 792 * select the band based on frequency 793 * XXX FIXME: get the cross-over points from the tuner struct 794 */ 795 if ( frequency < (160 * FREQFACTOR ) ) 796 band_select = LOW_BAND; 797 else if ( frequency < (454 * FREQFACTOR ) ) 798 band_select = MID_BAND; 799 else 800 band_select = HIGH_BAND; 801 802 #if defined( TEST_TUNER_AFC ) 803 if ( bktr->tuner.afc ) 804 frequency -= 4; 805 #endif 806 /* 807 * N = 16 * { fRF(pc) + fIF(pc) } 808 * or N = 16* fRF(pc) + 16*fIF(pc) } 809 * where: 810 * pc is picture carrier, fRF & fIF are in MHz 811 * 812 * fortunatly, frequency is passed in as MHz * 16 813 * and the TBL_IF frequency is also stored in MHz * 16 814 */ 815 N = frequency + TBL_IF; 816 817 /* set the address of the PLL */ 818 addr = bktr->card.tuner_pllAddr; 819 control = tuner->pllControl[ band_select ]; 820 band = tuner->bandAddrs[ band_select ]; 821 822 if(!(band && control)) /* Don't try to set un- */ 823 return(-1); /* supported modes. */ 824 825 if ( frequency > bktr->tuner.frequency ) { 826 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff ); 827 i2cWrite( bktr, addr, control, band ); 828 } 829 else { 830 i2cWrite( bktr, addr, control, band ); 831 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff ); 832 } 833 834 #if defined( TUNER_AFC ) 835 if ( bktr->tuner.afc == TRUE ) { 836 #if defined( TEST_TUNER_AFC ) 837 oldFrequency = frequency; 838 #endif 839 if ( (N = do_afc( bktr, addr, N )) < 0 ) { 840 /* AFC failed, restore requested frequency */ 841 N = frequency + TBL_IF; 842 #if defined( TEST_TUNER_AFC ) 843 printf("%s: do_afc: failed to lock\n", 844 bktr_name(bktr)); 845 #endif 846 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff ); 847 } 848 else 849 frequency = N - TBL_IF; 850 #if defined( TEST_TUNER_AFC ) 851 printf("%s: do_afc: returned freq %d (%d %% %d)\n", bktr_name(bktr), frequency, frequency / 16, frequency % 16); 852 afcDelta = frequency - oldFrequency; 853 printf("%s: changed by: %d clicks (%d mod %d)\n", bktr_name(bktr), afcDelta, afcDelta / 16, afcDelta % 16); 854 #endif 855 } 856 #endif /* TUNER_AFC */ 857 858 bktr->tuner.frequency = frequency; 859 } 860 861 if ( type == FM_RADIO_FREQUENCY ) { 862 band_select = FM_RADIO_BAND; 863 864 /* 865 * N = { fRF(pc) + fIF(pc) }/step_size 866 * The step size is 50kHz for FM radio. 867 * (eg after 102.35MHz comes 102.40 MHz) 868 * fIF is 10.7 MHz (as detailed in the specs) 869 * 870 * frequency is passed in as MHz * 100 871 * 872 * So, we have N = (frequency/100 + 10.70) /(50/1000) 873 */ 874 N = (frequency + 1070)/5; 875 876 /* set the address of the PLL */ 877 addr = bktr->card.tuner_pllAddr; 878 control = tuner->pllControl[ band_select ]; 879 band = tuner->bandAddrs[ band_select ]; 880 881 if(!(band && control)) /* Don't try to set un- */ 882 return(-1); /* supported modes. */ 883 884 band |= bktr->tuner.radio_mode; /* tuner.radio_mode is set in 885 * the ioctls RADIO_SETMODE 886 * and RADIO_GETMODE */ 887 888 i2cWrite( bktr, addr, control, band ); 889 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff ); 890 891 bktr->tuner.frequency = (N * 5) - 1070; 892 893 894 } 895 896 897 return( 0 ); 898 } 899 900 901 902 #if defined( TUNER_AFC ) 903 /* 904 * 905 */ 906 int 907 do_afc( bktr_ptr_t bktr, int addr, int frequency ) 908 { 909 int step; 910 int status; 911 int origFrequency; 912 913 origFrequency = frequency; 914 915 /* wait for first setting to take effect */ 916 tsleep( BKTR_SLEEP, PZERO, "tuning", hz/8 ); 917 918 if ( (status = i2cRead( bktr, addr + 1 )) < 0 ) 919 return( -1 ); 920 921 #if defined( TEST_TUNER_AFC ) 922 printf( "%s: Original freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status ); 923 #endif 924 for ( step = 0; step < AFC_MAX_STEP; ++step ) { 925 if ( (status = i2cRead( bktr, addr + 1 )) < 0 ) 926 goto fubar; 927 if ( !(status & 0x40) ) { 928 #if defined( TEST_TUNER_AFC ) 929 printf( "%s: no lock!\n", bktr_name(bktr) ); 930 #endif 931 goto fubar; 932 } 933 934 switch( status & AFC_BITS ) { 935 case AFC_FREQ_CENTERED: 936 #if defined( TEST_TUNER_AFC ) 937 printf( "%s: Centered, freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status ); 938 #endif 939 return( frequency ); 940 941 case AFC_FREQ_MINUS_125: 942 case AFC_FREQ_MINUS_62: 943 #if defined( TEST_TUNER_AFC ) 944 printf( "%s: Low, freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status ); 945 #endif 946 --frequency; 947 break; 948 949 case AFC_FREQ_PLUS_62: 950 case AFC_FREQ_PLUS_125: 951 #if defined( TEST_TUNER_AFC ) 952 printf( "%s: Hi, freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status ); 953 #endif 954 ++frequency; 955 break; 956 } 957 958 i2cWrite( bktr, addr, 959 (frequency>>8) & 0x7f, frequency & 0xff ); 960 DELAY( AFC_DELAY ); 961 } 962 963 fubar: 964 i2cWrite( bktr, addr, 965 (origFrequency>>8) & 0x7f, origFrequency & 0xff ); 966 967 return( -1 ); 968 } 969 #endif /* TUNER_AFC */ 970 #undef TBL_IF 971 972 973 /* 974 * Get the Tuner status and signal strength 975 */ 976 int get_tuner_status( bktr_ptr_t bktr ) { 977 return i2cRead( bktr, bktr->card.tuner_pllAddr + 1 ); 978 } 979 980 /* 981 * set the channel of the tuner 982 */ 983 int 984 tv_channel( bktr_ptr_t bktr, int channel ) 985 { 986 int frequency; 987 988 /* calculate the frequency according to tuner type */ 989 if ( (frequency = frequency_lookup( bktr, channel )) < 0 ) 990 return( -1 ); 991 992 /* set the new frequency */ 993 if ( tv_freq( bktr, frequency, TV_FREQUENCY ) < 0 ) 994 return( -1 ); 995 996 /* OK to update records */ 997 return( (bktr->tuner.channel = channel) ); 998 } 999 1000 /* 1001 * get channelset name 1002 */ 1003 int 1004 tuner_getchnlset(struct bktr_chnlset *chnlset) 1005 { 1006 if (( chnlset->index < CHNLSET_MIN ) || 1007 ( chnlset->index > CHNLSET_MAX )) 1008 return( EINVAL ); 1009 1010 memcpy(&chnlset->name, &freqTable[chnlset->index].name, 1011 BT848_MAX_CHNLSET_NAME_LEN); 1012 1013 chnlset->max_channel=freqTable[chnlset->index].ptr[0]; 1014 return( 0 ); 1015 } 1016
Indexes created Tue Sep 30 17:09:57 GMT 2025