bktr_tuner.c revision 1.8.4.1
1 /* $NetBSD: bktr_tuner.c,v 1.8.4.1 2002/01/10 19:57:13 thorpej Exp $ */ 2 3 /* FreeBSD: src/sys/dev/bktr/bktr_tuner.c,v 1.9 2000/10/19 07:33:28 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 #include <sys/cdefs.h> 49 __KERNEL_RCSID(0, "$NetBSD: bktr_tuner.c,v 1.8.4.1 2002/01/10 19:57:13 thorpej Exp $"); 50 51 #include <sys/param.h> 52 #include <sys/systm.h> 53 #include <sys/kernel.h> 54 #include <sys/vnode.h> 55 #ifdef __NetBSD__ 56 #include <sys/proc.h> 57 #endif 58 59 #ifdef __FreeBSD__ 60 #include <pci/pcivar.h> 61 62 #if (__FreeBSD_version < 500000) 63 #include <machine/clock.h> /* for DELAY */ 64 #endif 65 66 #if (__FreeBSD_version >=300000) 67 #include <machine/bus_memio.h> /* for bus space */ 68 #include <machine/bus.h> 69 #include <sys/bus.h> 70 #endif 71 #endif 72 73 #ifdef __NetBSD__ 74 #include <dev/ic/bt8xx.h> /* NetBSD .h file location */ 75 #include <dev/pci/bktr/bktr_reg.h> 76 #include <dev/pci/bktr/bktr_tuner.h> 77 #include <dev/pci/bktr/bktr_card.h> 78 #include <dev/pci/bktr/bktr_core.h> 79 #else 80 #include <machine/ioctl_meteor.h> /* Traditional .h file location */ 81 #include <machine/ioctl_bt848.h> /* extensions to ioctl_meteor.h */ 82 #include <dev/bktr/bktr_reg.h> 83 #include <dev/bktr/bktr_tuner.h> 84 #include <dev/bktr/bktr_card.h> 85 #include <dev/bktr/bktr_core.h> 86 #endif 87 88 89 90 #if defined( TUNER_AFC ) 91 #define AFC_DELAY 10000 /* 10 millisend delay */ 92 #define AFC_BITS 0x07 93 #define AFC_FREQ_MINUS_125 0x00 94 #define AFC_FREQ_MINUS_62 0x01 95 #define AFC_FREQ_CENTERED 0x02 96 #define AFC_FREQ_PLUS_62 0x03 97 #define AFC_FREQ_PLUS_125 0x04 98 #define AFC_MAX_STEP (5 * FREQFACTOR) /* no more than 5 MHz */ 99 #endif /* TUNER_AFC */ 100 101 102 #define TTYPE_XXX 0 103 #define TTYPE_NTSC 1 104 #define TTYPE_NTSC_J 2 105 #define TTYPE_PAL 3 106 #define TTYPE_PAL_M 4 107 #define TTYPE_PAL_N 5 108 #define TTYPE_SECAM 6 109 110 #define TSA552x_CB_MSB (0x80) 111 #define TSA552x_CB_CP (1<<6) /* set this for fast tuning */ 112 #define TSA552x_CB_T2 (1<<5) /* test mode - Normally set to 0 */ 113 #define TSA552x_CB_T1 (1<<4) /* test mode - Normally set to 0 */ 114 #define TSA552x_CB_T0 (1<<3) /* test mode - Normally set to 1 */ 115 #define TSA552x_CB_RSA (1<<2) /* 0 for 31.25 khz, 1 for 62.5 kHz */ 116 #define TSA552x_CB_RSB (1<<1) /* 0 for FM 50kHz steps, 1 = Use RSA*/ 117 #define TSA552x_CB_OS (1<<0) /* Set to 0 for normal operation */ 118 119 #define TSA552x_RADIO (TSA552x_CB_MSB | \ 120 TSA552x_CB_T0) 121 122 /* raise the charge pump voltage for fast tuning */ 123 #define TSA552x_FCONTROL (TSA552x_CB_MSB | \ 124 TSA552x_CB_CP | \ 125 TSA552x_CB_T0 | \ 126 TSA552x_CB_RSA | \ 127 TSA552x_CB_RSB) 128 129 /* lower the charge pump voltage for better residual oscillator FM */ 130 #define TSA552x_SCONTROL (TSA552x_CB_MSB | \ 131 TSA552x_CB_T0 | \ 132 TSA552x_CB_RSA | \ 133 TSA552x_CB_RSB) 134 135 /* The control value for the ALPS TSCH5 Tuner */ 136 #define TSCH5_FCONTROL 0x82 137 #define TSCH5_RADIO 0x86 138 139 /* The control value for the ALPS TSBH1 Tuner */ 140 #define TSBH1_FCONTROL 0xce 141 142 143 static const struct TUNER tuners[] = { 144 /* XXX FIXME: fill in the band-switch crosspoints */ 145 /* NO_TUNER */ 146 { "<no>", /* the 'name' */ 147 TTYPE_XXX, /* input type */ 148 { 0x00, /* control byte for Tuner PLL */ 149 0x00, 150 0x00, 151 0x00 }, 152 { 0x00, 0x00 }, /* band-switch crosspoints */ 153 { 0x00, 0x00, 0x00,0x00} }, /* the band-switch values */ 154 155 /* TEMIC_NTSC */ 156 { "Temic NTSC", /* the 'name' */ 157 TTYPE_NTSC, /* input type */ 158 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 159 TSA552x_SCONTROL, 160 TSA552x_SCONTROL, 161 0x00 }, 162 { 0x00, 0x00}, /* band-switch crosspoints */ 163 { 0x02, 0x04, 0x01, 0x00 } }, /* the band-switch values */ 164 165 /* TEMIC_PAL */ 166 { "Temic PAL", /* the 'name' */ 167 TTYPE_PAL, /* input type */ 168 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 169 TSA552x_SCONTROL, 170 TSA552x_SCONTROL, 171 0x00 }, 172 { 0x00, 0x00 }, /* band-switch crosspoints */ 173 { 0x02, 0x04, 0x01, 0x00 } }, /* the band-switch values */ 174 175 /* TEMIC_SECAM */ 176 { "Temic SECAM", /* the 'name' */ 177 TTYPE_SECAM, /* input type */ 178 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 179 TSA552x_SCONTROL, 180 TSA552x_SCONTROL, 181 0x00 }, 182 { 0x00, 0x00 }, /* band-switch crosspoints */ 183 { 0x02, 0x04, 0x01,0x00 } }, /* the band-switch values */ 184 185 /* PHILIPS_NTSC */ 186 { "Philips NTSC", /* the 'name' */ 187 TTYPE_NTSC, /* input type */ 188 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 189 TSA552x_SCONTROL, 190 TSA552x_SCONTROL, 191 0x00 }, 192 { 0x00, 0x00 }, /* band-switch crosspoints */ 193 { 0xa0, 0x90, 0x30, 0x00 } }, /* the band-switch values */ 194 195 /* PHILIPS_PAL */ 196 { "Philips PAL", /* the 'name' */ 197 TTYPE_PAL, /* input type */ 198 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 199 TSA552x_SCONTROL, 200 TSA552x_SCONTROL, 201 0x00 }, 202 { 0x00, 0x00 }, /* band-switch crosspoints */ 203 { 0xa0, 0x90, 0x30, 0x00 } }, /* the band-switch values */ 204 205 /* PHILIPS_SECAM */ 206 { "Philips SECAM", /* the 'name' */ 207 TTYPE_SECAM, /* input type */ 208 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 209 TSA552x_SCONTROL, 210 TSA552x_SCONTROL, 211 0x00 }, 212 { 0x00, 0x00 }, /* band-switch crosspoints */ 213 { 0xa7, 0x97, 0x37, 0x00 } }, /* the band-switch values */ 214 215 /* TEMIC_PAL I */ 216 { "Temic PAL I", /* the 'name' */ 217 TTYPE_PAL, /* input type */ 218 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 219 TSA552x_SCONTROL, 220 TSA552x_SCONTROL, 221 0x00 }, 222 { 0x00, 0x00 }, /* band-switch crosspoints */ 223 { 0x02, 0x04, 0x01,0x00 } }, /* the band-switch values */ 224 225 /* PHILIPS_PALI */ 226 { "Philips PAL I", /* the 'name' */ 227 TTYPE_PAL, /* input type */ 228 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 229 TSA552x_SCONTROL, 230 TSA552x_SCONTROL, 231 0x00 }, 232 { 0x00, 0x00 }, /* band-switch crosspoints */ 233 { 0xa0, 0x90, 0x30,0x00 } }, /* the band-switch values */ 234 235 /* PHILIPS_FR1236_NTSC */ 236 { "Philips FR1236 NTSC FM", /* the 'name' */ 237 TTYPE_NTSC, /* input type */ 238 { TSA552x_FCONTROL, /* control byte for Tuner PLL */ 239 TSA552x_FCONTROL, 240 TSA552x_FCONTROL, 241 TSA552x_RADIO }, 242 { 0x00, 0x00 }, /* band-switch crosspoints */ 243 { 0xa0, 0x90, 0x30,0xa4 } }, /* the band-switch values */ 244 245 /* PHILIPS_FR1216_PAL */ 246 { "Philips FR1216 PAL FM" , /* the 'name' */ 247 TTYPE_PAL, /* input type */ 248 { TSA552x_FCONTROL, /* control byte for Tuner PLL */ 249 TSA552x_FCONTROL, 250 TSA552x_FCONTROL, 251 TSA552x_RADIO }, 252 { 0x00, 0x00 }, /* band-switch crosspoints */ 253 { 0xa0, 0x90, 0x30, 0xa4 } }, /* the band-switch values */ 254 255 /* PHILIPS_FR1236_SECAM */ 256 { "Philips FR1236 SECAM FM", /* the 'name' */ 257 TTYPE_SECAM, /* input type */ 258 { TSA552x_FCONTROL, /* control byte for Tuner PLL */ 259 TSA552x_FCONTROL, 260 TSA552x_FCONTROL, 261 TSA552x_RADIO }, 262 { 0x00, 0x00 }, /* band-switch crosspoints */ 263 { 0xa7, 0x97, 0x37, 0xa4 } }, /* the band-switch values */ 264 265 /* ALPS TSCH5 NTSC */ 266 { "ALPS TSCH5 NTSC FM", /* the 'name' */ 267 TTYPE_NTSC, /* input type */ 268 { TSCH5_FCONTROL, /* control byte for Tuner PLL */ 269 TSCH5_FCONTROL, 270 TSCH5_FCONTROL, 271 TSCH5_RADIO }, 272 { 0x00, 0x00 }, /* band-switch crosspoints */ 273 { 0x14, 0x12, 0x11, 0x04 } }, /* the band-switch values */ 274 275 /* ALPS TSBH1 NTSC */ 276 { "ALPS TSBH1 NTSC", /* the 'name' */ 277 TTYPE_NTSC, /* input type */ 278 { TSBH1_FCONTROL, /* control byte for Tuner PLL */ 279 TSBH1_FCONTROL, 280 TSBH1_FCONTROL, 281 0x00 }, 282 { 0x00, 0x00 }, /* band-switch crosspoints */ 283 { 0x01, 0x02, 0x08, 0x00 } } /* the band-switch values */ 284 }; 285 286 287 /* scaling factor for frequencies expressed as ints */ 288 #define FREQFACTOR 16 289 290 /* 291 * Format: 292 * entry 0: MAX legal channel 293 * entry 1: IF frequency 294 * expressed as fi{mHz} * 16, 295 * eg 45.75mHz == 45.75 * 16 = 732 296 * entry 2: [place holder/future] 297 * entry 3: base of channel record 0 298 * entry 3 + (x*3): base of channel record 'x' 299 * entry LAST: NULL channel entry marking end of records 300 * 301 * Record: 302 * int 0: base channel 303 * int 1: frequency of base channel, 304 * expressed as fb{mHz} * 16, 305 * int 2: offset frequency between channels, 306 * expressed as fo{mHz} * 16, 307 */ 308 309 /* 310 * North American Broadcast Channels: 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: 471.25 mHz - 83: 885.25 mHz 316 * 317 * IF freq: 45.75 mHz 318 */ 319 #define OFFSET 6.00 320 static const int nabcst[] = { 321 83, (int)( 45.75 * FREQFACTOR), 0, 322 14, (int)(471.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 323 7, (int)(175.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 324 5, (int)( 77.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 325 2, (int)( 55.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 326 0 327 }; 328 #undef OFFSET 329 330 /* 331 * North American Cable Channels, IRC: 332 * 333 * 2: 55.25 mHz - 4: 67.25 mHz 334 * 5: 77.25 mHz - 6: 83.25 mHz 335 * 7: 175.25 mHz - 13: 211.25 mHz 336 * 14: 121.25 mHz - 22: 169.25 mHz 337 * 23: 217.25 mHz - 94: 643.25 mHz 338 * 95: 91.25 mHz - 99: 115.25 mHz 339 * 340 * IF freq: 45.75 mHz 341 */ 342 #define OFFSET 6.00 343 static const int irccable[] = { 344 116, (int)( 45.75 * FREQFACTOR), 0, 345 100, (int)(649.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 346 95, (int)( 91.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 347 23, (int)(217.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 348 14, (int)(121.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 349 7, (int)(175.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 350 5, (int)( 77.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 351 2, (int)( 55.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 352 0 353 }; 354 #undef OFFSET 355 356 /* 357 * North American Cable Channels, HRC: 358 * 359 * 2: 54 mHz - 4: 66 mHz 360 * 5: 78 mHz - 6: 84 mHz 361 * 7: 174 mHz - 13: 210 mHz 362 * 14: 120 mHz - 22: 168 mHz 363 * 23: 216 mHz - 94: 642 mHz 364 * 95: 90 mHz - 99: 114 mHz 365 * 366 * IF freq: 45.75 mHz 367 */ 368 #define OFFSET 6.00 369 static const int hrccable[] = { 370 116, (int)( 45.75 * FREQFACTOR), 0, 371 100, (int)(648.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 372 95, (int)( 90.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 373 23, (int)(216.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 374 14, (int)(120.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 375 7, (int)(174.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 376 5, (int)( 78.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 377 2, (int)( 54.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 378 0 379 }; 380 #undef OFFSET 381 382 /* 383 * Western European broadcast channels: 384 * 385 * (there are others that appear to vary between countries - rmt) 386 * 387 * here's the table Philips provides: 388 * caution, some of the offsets don't compute... 389 * 390 * 1 4525 700 N21 391 * 392 * 2 4825 700 E2 393 * 3 5525 700 E3 394 * 4 6225 700 E4 395 * 396 * 5 17525 700 E5 397 * 6 18225 700 E6 398 * 7 18925 700 E7 399 * 8 19625 700 E8 400 * 9 20325 700 E9 401 * 10 21025 700 E10 402 * 11 21725 700 E11 403 * 12 22425 700 E12 404 * 405 * 13 5375 700 ITA 406 * 14 6225 700 ITB 407 * 408 * 15 8225 700 ITC 409 * 410 * 16 17525 700 ITD 411 * 17 18325 700 ITE 412 * 413 * 18 19225 700 ITF 414 * 19 20125 700 ITG 415 * 20 21025 700 ITH 416 * 417 * 21 47125 800 E21 418 * 22 47925 800 E22 419 * 23 48725 800 E23 420 * 24 49525 800 E24 421 * 25 50325 800 E25 422 * 26 51125 800 E26 423 * 27 51925 800 E27 424 * 28 52725 800 E28 425 * 29 53525 800 E29 426 * 30 54325 800 E30 427 * 31 55125 800 E31 428 * 32 55925 800 E32 429 * 33 56725 800 E33 430 * 34 57525 800 E34 431 * 35 58325 800 E35 432 * 36 59125 800 E36 433 * 37 59925 800 E37 434 * 38 60725 800 E38 435 * 39 61525 800 E39 436 * 40 62325 800 E40 437 * 41 63125 800 E41 438 * 42 63925 800 E42 439 * 43 64725 800 E43 440 * 44 65525 800 E44 441 * 45 66325 800 E45 442 * 46 67125 800 E46 443 * 47 67925 800 E47 444 * 48 68725 800 E48 445 * 49 69525 800 E49 446 * 50 70325 800 E50 447 * 51 71125 800 E51 448 * 52 71925 800 E52 449 * 53 72725 800 E53 450 * 54 73525 800 E54 451 * 55 74325 800 E55 452 * 56 75125 800 E56 453 * 57 75925 800 E57 454 * 58 76725 800 E58 455 * 59 77525 800 E59 456 * 60 78325 800 E60 457 * 61 79125 800 E61 458 * 62 79925 800 E62 459 * 63 80725 800 E63 460 * 64 81525 800 E64 461 * 65 82325 800 E65 462 * 66 83125 800 E66 463 * 67 83925 800 E67 464 * 68 84725 800 E68 465 * 69 85525 800 E69 466 * 467 * 70 4575 800 IA 468 * 71 5375 800 IB 469 * 72 6175 800 IC 470 * 471 * 74 6925 700 S01 472 * 75 7625 700 S02 473 * 76 8325 700 S03 474 * 475 * 80 10525 700 S1 476 * 81 11225 700 S2 477 * 82 11925 700 S3 478 * 83 12625 700 S4 479 * 84 13325 700 S5 480 * 85 14025 700 S6 481 * 86 14725 700 S7 482 * 87 15425 700 S8 483 * 88 16125 700 S9 484 * 89 16825 700 S10 485 * 90 23125 700 S11 486 * 91 23825 700 S12 487 * 92 24525 700 S13 488 * 93 25225 700 S14 489 * 94 25925 700 S15 490 * 95 26625 700 S16 491 * 96 27325 700 S17 492 * 97 28025 700 S18 493 * 98 28725 700 S19 494 * 99 29425 700 S20 495 * 496 * 497 * Channels S21 - S41 are taken from 498 * http://gemma.apple.com:80/dev/technotes/tn/tn1012.html 499 * 500 * 100 30325 800 S21 501 * 101 31125 800 S22 502 * 102 31925 800 S23 503 * 103 32725 800 S24 504 * 104 33525 800 S25 505 * 105 34325 800 S26 506 * 106 35125 800 S27 507 * 107 35925 800 S28 508 * 108 36725 800 S29 509 * 109 37525 800 S30 510 * 110 38325 800 S31 511 * 111 39125 800 S32 512 * 112 39925 800 S33 513 * 113 40725 800 S34 514 * 114 41525 800 S35 515 * 115 42325 800 S36 516 * 116 43125 800 S37 517 * 117 43925 800 S38 518 * 118 44725 800 S39 519 * 119 45525 800 S40 520 * 120 46325 800 S41 521 * 522 * 121 3890 000 IFFREQ 523 * 524 */ 525 static const int weurope[] = { 526 121, (int)( 38.90 * FREQFACTOR), 0, 527 100, (int)(303.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 528 90, (int)(231.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR), 529 80, (int)(105.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR), 530 74, (int)( 69.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR), 531 21, (int)(471.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 532 17, (int)(183.25 * FREQFACTOR), (int)(9.00 * FREQFACTOR), 533 16, (int)(175.25 * FREQFACTOR), (int)(9.00 * FREQFACTOR), 534 15, (int)(82.25 * FREQFACTOR), (int)(8.50 * FREQFACTOR), 535 13, (int)(53.75 * FREQFACTOR), (int)(8.50 * FREQFACTOR), 536 5, (int)(175.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR), 537 2, (int)(48.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR), 538 0 539 }; 540 541 /* 542 * Japanese Broadcast Channels: 543 * 544 * 1: 91.25MHz - 3: 103.25MHz 545 * 4: 171.25MHz - 7: 189.25MHz 546 * 8: 193.25MHz - 12: 217.25MHz (VHF) 547 * 13: 471.25MHz - 62: 765.25MHz (UHF) 548 * 549 * IF freq: 45.75 mHz 550 * OR 551 * IF freq: 58.75 mHz 552 */ 553 #define OFFSET 6.00 554 #define IF_FREQ 45.75 555 static const int jpnbcst[] = { 556 62, (int)(IF_FREQ * FREQFACTOR), 0, 557 13, (int)(471.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 558 8, (int)(193.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 559 4, (int)(171.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 560 1, (int)( 91.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 561 0 562 }; 563 #undef IF_FREQ 564 #undef OFFSET 565 566 /* 567 * Japanese Cable Channels: 568 * 569 * 1: 91.25MHz - 3: 103.25MHz 570 * 4: 171.25MHz - 7: 189.25MHz 571 * 8: 193.25MHz - 12: 217.25MHz 572 * 13: 109.25MHz - 21: 157.25MHz 573 * 22: 165.25MHz 574 * 23: 223.25MHz - 63: 463.25MHz 575 * 576 * IF freq: 45.75 mHz 577 */ 578 #define OFFSET 6.00 579 #define IF_FREQ 45.75 580 static const int jpncable[] = { 581 63, (int)(IF_FREQ * FREQFACTOR), 0, 582 23, (int)(223.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 583 22, (int)(165.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 584 13, (int)(109.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 585 8, (int)(193.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 586 4, (int)(171.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 587 1, (int)( 91.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 588 0 589 }; 590 #undef IF_FREQ 591 #undef OFFSET 592 593 /* 594 * xUSSR Broadcast Channels: 595 * 596 * 1: 49.75MHz - 2: 59.25MHz 597 * 3: 77.25MHz - 5: 93.25MHz 598 * 6: 175.25MHz - 12: 223.25MHz 599 * 13-20 - not exist 600 * 21: 471.25MHz - 34: 575.25MHz 601 * 35: 583.25MHz - 69: 855.25MHz 602 * 603 * Cable channels 604 * 605 * 70: 111.25MHz - 77: 167.25MHz 606 * 78: 231.25MHz -107: 463.25MHz 607 * 608 * IF freq: 38.90 MHz 609 */ 610 #define IF_FREQ 38.90 611 static const int xussr[] = { 612 107, (int)(IF_FREQ * FREQFACTOR), 0, 613 78, (int)(231.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 614 70, (int)(111.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 615 35, (int)(583.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 616 21, (int)(471.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 617 6, (int)(175.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 618 3, (int)( 77.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 619 1, (int)( 49.75 * FREQFACTOR), (int)(9.50 * FREQFACTOR), 620 0 621 }; 622 #undef IF_FREQ 623 624 /* 625 * Australian broadcast channels 626 */ 627 #define OFFSET 7.00 628 #define IF_FREQ 38.90 629 static const int australia[] = { 630 83, (int)(IF_FREQ * FREQFACTOR), 0, 631 28, (int)(527.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 632 10, (int)(209.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 633 6, (int)(175.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 634 4, (int)( 95.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 635 3, (int)( 86.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 636 1, (int)( 57.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 637 0 638 }; 639 #undef OFFSET 640 #undef IF_FREQ 641 642 /* 643 * France broadcast channels 644 */ 645 #define OFFSET 8.00 646 #define IF_FREQ 38.90 647 static const int france[] = { 648 69, (int)(IF_FREQ * FREQFACTOR), 0, 649 21, (int)(471.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 21 -> 69 */ 650 5, (int)(176.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 5 -> 10 */ 651 4, (int)( 63.75 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 4 */ 652 3, (int)( 60.50 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 3 */ 653 1, (int)( 47.75 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 1 2 */ 654 0 655 }; 656 #undef OFFSET 657 #undef IF_FREQ 658 659 static const struct { 660 const int *ptr; 661 const char name[BT848_MAX_CHNLSET_NAME_LEN]; 662 } freqTable[] = { 663 {NULL, ""}, 664 {nabcst, "nabcst"}, 665 {irccable, "cableirc"}, 666 {hrccable, "cablehrc"}, 667 {weurope, "weurope"}, 668 {jpnbcst, "jpnbcst"}, 669 {jpncable, "jpncable"}, 670 {xussr, "xussr"}, 671 {australia, "australia"}, 672 {france, "france"}, 673 674 }; 675 676 #define TBL_CHNL freqTable[ bktr->tuner.chnlset ].ptr[ x ] 677 #define TBL_BASE_FREQ freqTable[ bktr->tuner.chnlset ].ptr[ x + 1 ] 678 #define TBL_OFFSET freqTable[ bktr->tuner.chnlset ].ptr[ x + 2 ] 679 static int 680 frequency_lookup( bktr_ptr_t bktr, int channel ) 681 { 682 int x; 683 684 /* check for "> MAX channel" */ 685 x = 0; 686 if ( channel > TBL_CHNL ) 687 return( -1 ); 688 689 /* search the table for data */ 690 for ( x = 3; TBL_CHNL; x += 3 ) { 691 if ( channel >= TBL_CHNL ) { 692 return( TBL_BASE_FREQ + 693 ((channel - TBL_CHNL) * TBL_OFFSET) ); 694 } 695 } 696 697 /* not found, must be below the MIN channel */ 698 return( -1 ); 699 } 700 #undef TBL_OFFSET 701 #undef TBL_BASE_FREQ 702 #undef TBL_CHNL 703 704 705 #define TBL_IF freqTable[ bktr->tuner.chnlset ].ptr[ 1 ] 706 707 708 /* Initialise the tuner structures in the bktr_softc */ 709 /* This is needed as the tuner details are no longer globally declared */ 710 711 void select_tuner( bktr_ptr_t bktr, int tuner_type ) { 712 if (tuner_type < Bt848_MAX_TUNER) { 713 bktr->card.tuner = &tuners[ tuner_type ]; 714 } else { 715 bktr->card.tuner = NULL; 716 } 717 } 718 719 /* 720 * Tuner Notes: 721 * Programming the tuner properly is quite complicated. 722 * Here are some notes, based on a FM1246 data sheet for a PAL-I tuner. 723 * The tuner (front end) covers 45.75 Mhz - 855.25 Mhz and an FM band of 724 * 87.5 Mhz to 108.0 Mhz. 725 * 726 * RF and IF. RF = radio frequencies, it is the transmitted signal. 727 * IF is the Intermediate Frequency (the offset from the base 728 * signal where the video, color, audio and NICAM signals are. 729 * 730 * Eg, Picture at 38.9 Mhz, Colour at 34.47 MHz, sound at 32.9 MHz 731 * NICAM at 32.348 Mhz. 732 * Strangely enough, there is an IF (intermediate frequency) for 733 * FM Radio which is 10.7 Mhz. 734 * 735 * The tuner also works in Bands. Philips bands are 736 * FM radio band 87.50 to 108.00 MHz 737 * Low band 45.75 to 170.00 MHz 738 * Mid band 170.00 to 450.00 MHz 739 * High band 450.00 to 855.25 MHz 740 * 741 * 742 * Now we need to set the PLL on the tuner to the required freuqncy. 743 * It has a programmable divisor. 744 * For TV we want 745 * N = 16 (freq RF(pc) + freq IF(pc)) pc is picture carrier and RF and IF 746 * are in MHz. 747 748 * For RADIO we want a different equation. 749 * freq IF is 10.70 MHz (so the data sheet tells me) 750 * N = (freq RF + freq IF) / step size 751 * The step size must be set to 50 khz (so the data sheet tells me) 752 * (note this is 50 kHz, the other things are in MHz) 753 * so we end up with N = 20x(freq RF + 10.7) 754 * 755 */ 756 757 #define LOW_BAND 0 758 #define MID_BAND 1 759 #define HIGH_BAND 2 760 #define FM_RADIO_BAND 3 761 762 763 /* Check if these are correct for other than Philips PAL */ 764 #define STATUSBIT_COLD 0x80 765 #define STATUSBIT_LOCK 0x40 766 #define STATUSBIT_TV 0x20 767 #define STATUSBIT_STEREO 0x10 /* valid if FM (aka not TV) */ 768 #define STATUSBIT_ADC 0x07 769 770 /* 771 * set the frequency of the tuner 772 * If 'type' is TV_FREQUENCY, the frequency is freq MHz*16 773 * If 'type' is FM_RADIO_FREQUENCY, the frequency is freq MHz * 100 774 * (note *16 gives is 4 bits of fraction, eg steps of nnn.0625) 775 * 776 */ 777 int 778 tv_freq( bktr_ptr_t bktr, int frequency, int type ) 779 { 780 const struct TUNER* tuner; 781 u_char addr; 782 u_char control; 783 u_char band; 784 int N; 785 int band_select = 0; 786 #if defined( TEST_TUNER_AFC ) 787 int oldFrequency, afcDelta; 788 #endif 789 790 tuner = bktr->card.tuner; 791 if ( tuner == NULL ) 792 return( -1 ); 793 794 if (type == TV_FREQUENCY) { 795 /* 796 * select the band based on frequency 797 * XXX FIXME: get the cross-over points from the tuner struct 798 */ 799 if ( frequency < (160 * FREQFACTOR ) ) 800 band_select = LOW_BAND; 801 else if ( frequency < (454 * 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 * fortunatly, 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 Oct 27 20:09:55 GMT 2025