bktr_tuner.c revision 1.6
1 /* $NetBSD: bktr_tuner.c,v 1.6 2000/10/28 14:31:58 wiz Exp $ */ 2 3 /* FreeBSD: src/sys/dev/bktr/bktr_tuner.c,v 1.8 2000/10/15 14:18:06 phk 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 <pci/pcivar.h> 60 61 #if (__FreeBSD_version < 500000) 62 #include <machine/clock.h> /* for DELAY */ 63 #endif 64 65 #if (__FreeBSD_version >=300000) 66 #include <machine/bus_memio.h> /* for bus space */ 67 #include <machine/bus.h> 68 #include <sys/bus.h> 69 #endif 70 #endif 71 72 #ifdef __NetBSD__ 73 #include <dev/ic/bt8xx.h> /* NetBSD .h file location */ 74 #include <dev/pci/bktr/bktr_reg.h> 75 #include <dev/pci/bktr/bktr_tuner.h> 76 #include <dev/pci/bktr/bktr_card.h> 77 #include <dev/pci/bktr/bktr_core.h> 78 #else 79 #include <machine/ioctl_meteor.h> /* Traditional .h file location */ 80 #include <machine/ioctl_bt848.h> /* extensions to ioctl_meteor.h */ 81 #include <dev/bktr/bktr_reg.h> 82 #include <dev/bktr/bktr_tuner.h> 83 #include <dev/bktr/bktr_card.h> 84 #include <dev/bktr/bktr_core.h> 85 #endif 86 87 88 89 #if defined( TUNER_AFC ) 90 #define AFC_DELAY 10000 /* 10 millisend delay */ 91 #define AFC_BITS 0x07 92 #define AFC_FREQ_MINUS_125 0x00 93 #define AFC_FREQ_MINUS_62 0x01 94 #define AFC_FREQ_CENTERED 0x02 95 #define AFC_FREQ_PLUS_62 0x03 96 #define AFC_FREQ_PLUS_125 0x04 97 #define AFC_MAX_STEP (5 * FREQFACTOR) /* no more than 5 MHz */ 98 #endif /* TUNER_AFC */ 99 100 101 #define TTYPE_XXX 0 102 #define TTYPE_NTSC 1 103 #define TTYPE_NTSC_J 2 104 #define TTYPE_PAL 3 105 #define TTYPE_PAL_M 4 106 #define TTYPE_PAL_N 5 107 #define TTYPE_SECAM 6 108 109 #define TSA552x_CB_MSB (0x80) 110 #define TSA552x_CB_CP (1<<6) /* set this for fast tuning */ 111 #define TSA552x_CB_T2 (1<<5) /* test mode - Normally set to 0 */ 112 #define TSA552x_CB_T1 (1<<4) /* test mode - Normally set to 0 */ 113 #define TSA552x_CB_T0 (1<<3) /* test mode - Normally set to 1 */ 114 #define TSA552x_CB_RSA (1<<2) /* 0 for 31.25 khz, 1 for 62.5 kHz */ 115 #define TSA552x_CB_RSB (1<<1) /* 0 for FM 50kHz steps, 1 = Use RSA*/ 116 #define TSA552x_CB_OS (1<<0) /* Set to 0 for normal operation */ 117 118 #define TSA552x_RADIO (TSA552x_CB_MSB | \ 119 TSA552x_CB_T0) 120 121 /* raise the charge pump voltage for fast tuning */ 122 #define TSA552x_FCONTROL (TSA552x_CB_MSB | \ 123 TSA552x_CB_CP | \ 124 TSA552x_CB_T0 | \ 125 TSA552x_CB_RSA | \ 126 TSA552x_CB_RSB) 127 128 /* lower the charge pump voltage for better residual oscillator FM */ 129 #define TSA552x_SCONTROL (TSA552x_CB_MSB | \ 130 TSA552x_CB_T0 | \ 131 TSA552x_CB_RSA | \ 132 TSA552x_CB_RSB) 133 134 /* The control value for the ALPS TSCH5 Tuner */ 135 #define TSCH5_FCONTROL 0x82 136 #define TSCH5_RADIO 0x86 137 138 /* The control value for the ALPS TSBH1 Tuner */ 139 #define TSBH1_FCONTROL 0xce 140 141 142 static const struct TUNER tuners[] = { 143 /* XXX FIXME: fill in the band-switch crosspoints */ 144 /* NO_TUNER */ 145 { "<no>", /* the 'name' */ 146 TTYPE_XXX, /* input type */ 147 { 0x00, /* control byte for Tuner PLL */ 148 0x00, 149 0x00, 150 0x00 }, 151 { 0x00, 0x00 }, /* band-switch crosspoints */ 152 { 0x00, 0x00, 0x00,0x00} }, /* the band-switch values */ 153 154 /* TEMIC_NTSC */ 155 { "Temic NTSC", /* the 'name' */ 156 TTYPE_NTSC, /* input type */ 157 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 158 TSA552x_SCONTROL, 159 TSA552x_SCONTROL, 160 0x00 }, 161 { 0x00, 0x00}, /* band-switch crosspoints */ 162 { 0x02, 0x04, 0x01, 0x00 } }, /* the band-switch values */ 163 164 /* TEMIC_PAL */ 165 { "Temic PAL", /* the 'name' */ 166 TTYPE_PAL, /* input type */ 167 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 168 TSA552x_SCONTROL, 169 TSA552x_SCONTROL, 170 0x00 }, 171 { 0x00, 0x00 }, /* band-switch crosspoints */ 172 { 0x02, 0x04, 0x01, 0x00 } }, /* the band-switch values */ 173 174 /* TEMIC_SECAM */ 175 { "Temic SECAM", /* the 'name' */ 176 TTYPE_SECAM, /* input type */ 177 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 178 TSA552x_SCONTROL, 179 TSA552x_SCONTROL, 180 0x00 }, 181 { 0x00, 0x00 }, /* band-switch crosspoints */ 182 { 0x02, 0x04, 0x01,0x00 } }, /* the band-switch values */ 183 184 /* PHILIPS_NTSC */ 185 { "Philips NTSC", /* the 'name' */ 186 TTYPE_NTSC, /* input type */ 187 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 188 TSA552x_SCONTROL, 189 TSA552x_SCONTROL, 190 0x00 }, 191 { 0x00, 0x00 }, /* band-switch crosspoints */ 192 { 0xa0, 0x90, 0x30, 0x00 } }, /* the band-switch values */ 193 194 /* PHILIPS_PAL */ 195 { "Philips PAL", /* the 'name' */ 196 TTYPE_PAL, /* input type */ 197 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 198 TSA552x_SCONTROL, 199 TSA552x_SCONTROL, 200 0x00 }, 201 { 0x00, 0x00 }, /* band-switch crosspoints */ 202 { 0xa0, 0x90, 0x30, 0x00 } }, /* the band-switch values */ 203 204 /* PHILIPS_SECAM */ 205 { "Philips SECAM", /* the 'name' */ 206 TTYPE_SECAM, /* input type */ 207 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 208 TSA552x_SCONTROL, 209 TSA552x_SCONTROL, 210 0x00 }, 211 { 0x00, 0x00 }, /* band-switch crosspoints */ 212 { 0xa7, 0x97, 0x37, 0x00 } }, /* the band-switch values */ 213 214 /* TEMIC_PAL I */ 215 { "Temic PAL I", /* the 'name' */ 216 TTYPE_PAL, /* input type */ 217 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 218 TSA552x_SCONTROL, 219 TSA552x_SCONTROL, 220 0x00 }, 221 { 0x00, 0x00 }, /* band-switch crosspoints */ 222 { 0x02, 0x04, 0x01,0x00 } }, /* the band-switch values */ 223 224 /* PHILIPS_PALI */ 225 { "Philips PAL I", /* the 'name' */ 226 TTYPE_PAL, /* input type */ 227 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 228 TSA552x_SCONTROL, 229 TSA552x_SCONTROL, 230 0x00 }, 231 { 0x00, 0x00 }, /* band-switch crosspoints */ 232 { 0xa0, 0x90, 0x30,0x00 } }, /* the band-switch values */ 233 234 /* PHILIPS_FR1236_NTSC */ 235 { "Philips FR1236 NTSC FM", /* the 'name' */ 236 TTYPE_NTSC, /* input type */ 237 { TSA552x_FCONTROL, /* control byte for Tuner PLL */ 238 TSA552x_FCONTROL, 239 TSA552x_FCONTROL, 240 TSA552x_RADIO }, 241 { 0x00, 0x00 }, /* band-switch crosspoints */ 242 { 0xa0, 0x90, 0x30,0xa4 } }, /* the band-switch values */ 243 244 /* PHILIPS_FR1216_PAL */ 245 { "Philips FR1216 PAL FM" , /* the 'name' */ 246 TTYPE_PAL, /* input type */ 247 { TSA552x_FCONTROL, /* control byte for Tuner PLL */ 248 TSA552x_FCONTROL, 249 TSA552x_FCONTROL, 250 TSA552x_RADIO }, 251 { 0x00, 0x00 }, /* band-switch crosspoints */ 252 { 0xa0, 0x90, 0x30, 0xa4 } }, /* the band-switch values */ 253 254 /* PHILIPS_FR1236_SECAM */ 255 { "Philips FR1236 SECAM FM", /* the 'name' */ 256 TTYPE_SECAM, /* input type */ 257 { TSA552x_FCONTROL, /* control byte for Tuner PLL */ 258 TSA552x_FCONTROL, 259 TSA552x_FCONTROL, 260 TSA552x_RADIO }, 261 { 0x00, 0x00 }, /* band-switch crosspoints */ 262 { 0xa7, 0x97, 0x37, 0xa4 } }, /* the band-switch values */ 263 264 /* ALPS TSCH5 NTSC */ 265 { "ALPS TSCH5 NTSC FM", /* the 'name' */ 266 TTYPE_NTSC, /* input type */ 267 { TSCH5_FCONTROL, /* control byte for Tuner PLL */ 268 TSCH5_FCONTROL, 269 TSCH5_FCONTROL, 270 TSCH5_RADIO }, 271 { 0x00, 0x00 }, /* band-switch crosspoints */ 272 { 0x14, 0x12, 0x11, 0x04 } }, /* the band-switch values */ 273 274 /* ALPS TSBH1 NTSC */ 275 { "ALPS TSBH1 NTSC", /* the 'name' */ 276 TTYPE_NTSC, /* input type */ 277 { TSBH1_FCONTROL, /* control byte for Tuner PLL */ 278 TSBH1_FCONTROL, 279 TSBH1_FCONTROL, 280 0x00 }, 281 { 0x00, 0x00 }, /* band-switch crosspoints */ 282 { 0x01, 0x02, 0x08, 0x00 } } /* the band-switch values */ 283 }; 284 285 286 /* scaling factor for frequencies expressed as ints */ 287 #define FREQFACTOR 16 288 289 /* 290 * Format: 291 * entry 0: MAX legal channel 292 * entry 1: IF frequency 293 * expressed as fi{mHz} * 16, 294 * eg 45.75mHz == 45.75 * 16 = 732 295 * entry 2: [place holder/future] 296 * entry 3: base of channel record 0 297 * entry 3 + (x*3): base of channel record 'x' 298 * entry LAST: NULL channel entry marking end of records 299 * 300 * Record: 301 * int 0: base channel 302 * int 1: frequency of base channel, 303 * expressed as fb{mHz} * 16, 304 * int 2: offset frequency between channels, 305 * expressed as fo{mHz} * 16, 306 */ 307 308 /* 309 * North American Broadcast Channels: 310 * 311 * 2: 55.25 mHz - 4: 67.25 mHz 312 * 5: 77.25 mHz - 6: 83.25 mHz 313 * 7: 175.25 mHz - 13: 211.25 mHz 314 * 14: 471.25 mHz - 83: 885.25 mHz 315 * 316 * IF freq: 45.75 mHz 317 */ 318 #define OFFSET 6.00 319 static int nabcst[] = { 320 83, (int)( 45.75 * FREQFACTOR), 0, 321 14, (int)(471.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 322 7, (int)(175.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 323 5, (int)( 77.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 324 2, (int)( 55.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 325 0 326 }; 327 #undef OFFSET 328 329 /* 330 * North American Cable Channels, IRC: 331 * 332 * 2: 55.25 mHz - 4: 67.25 mHz 333 * 5: 77.25 mHz - 6: 83.25 mHz 334 * 7: 175.25 mHz - 13: 211.25 mHz 335 * 14: 121.25 mHz - 22: 169.25 mHz 336 * 23: 217.25 mHz - 94: 643.25 mHz 337 * 95: 91.25 mHz - 99: 115.25 mHz 338 * 339 * IF freq: 45.75 mHz 340 */ 341 #define OFFSET 6.00 342 static int irccable[] = { 343 116, (int)( 45.75 * FREQFACTOR), 0, 344 100, (int)(649.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 345 95, (int)( 91.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 346 23, (int)(217.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 347 14, (int)(121.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 348 7, (int)(175.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 349 5, (int)( 77.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 350 2, (int)( 55.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 351 0 352 }; 353 #undef OFFSET 354 355 /* 356 * North American Cable Channels, HRC: 357 * 358 * 2: 54 mHz - 4: 66 mHz 359 * 5: 78 mHz - 6: 84 mHz 360 * 7: 174 mHz - 13: 210 mHz 361 * 14: 120 mHz - 22: 168 mHz 362 * 23: 216 mHz - 94: 642 mHz 363 * 95: 90 mHz - 99: 114 mHz 364 * 365 * IF freq: 45.75 mHz 366 */ 367 #define OFFSET 6.00 368 static int hrccable[] = { 369 116, (int)( 45.75 * FREQFACTOR), 0, 370 100, (int)(648.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 371 95, (int)( 90.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 372 23, (int)(216.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 373 14, (int)(120.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 374 7, (int)(174.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 375 5, (int)( 78.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 376 2, (int)( 54.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 377 0 378 }; 379 #undef OFFSET 380 381 /* 382 * Western European broadcast channels: 383 * 384 * (there are others that appear to vary between countries - rmt) 385 * 386 * here's the table Philips provides: 387 * caution, some of the offsets don't compute... 388 * 389 * 1 4525 700 N21 390 * 391 * 2 4825 700 E2 392 * 3 5525 700 E3 393 * 4 6225 700 E4 394 * 395 * 5 17525 700 E5 396 * 6 18225 700 E6 397 * 7 18925 700 E7 398 * 8 19625 700 E8 399 * 9 20325 700 E9 400 * 10 21025 700 E10 401 * 11 21725 700 E11 402 * 12 22425 700 E12 403 * 404 * 13 5375 700 ITA 405 * 14 6225 700 ITB 406 * 407 * 15 8225 700 ITC 408 * 409 * 16 17525 700 ITD 410 * 17 18325 700 ITE 411 * 412 * 18 19225 700 ITF 413 * 19 20125 700 ITG 414 * 20 21025 700 ITH 415 * 416 * 21 47125 800 E21 417 * 22 47925 800 E22 418 * 23 48725 800 E23 419 * 24 49525 800 E24 420 * 25 50325 800 E25 421 * 26 51125 800 E26 422 * 27 51925 800 E27 423 * 28 52725 800 E28 424 * 29 53525 800 E29 425 * 30 54325 800 E30 426 * 31 55125 800 E31 427 * 32 55925 800 E32 428 * 33 56725 800 E33 429 * 34 57525 800 E34 430 * 35 58325 800 E35 431 * 36 59125 800 E36 432 * 37 59925 800 E37 433 * 38 60725 800 E38 434 * 39 61525 800 E39 435 * 40 62325 800 E40 436 * 41 63125 800 E41 437 * 42 63925 800 E42 438 * 43 64725 800 E43 439 * 44 65525 800 E44 440 * 45 66325 800 E45 441 * 46 67125 800 E46 442 * 47 67925 800 E47 443 * 48 68725 800 E48 444 * 49 69525 800 E49 445 * 50 70325 800 E50 446 * 51 71125 800 E51 447 * 52 71925 800 E52 448 * 53 72725 800 E53 449 * 54 73525 800 E54 450 * 55 74325 800 E55 451 * 56 75125 800 E56 452 * 57 75925 800 E57 453 * 58 76725 800 E58 454 * 59 77525 800 E59 455 * 60 78325 800 E60 456 * 61 79125 800 E61 457 * 62 79925 800 E62 458 * 63 80725 800 E63 459 * 64 81525 800 E64 460 * 65 82325 800 E65 461 * 66 83125 800 E66 462 * 67 83925 800 E67 463 * 68 84725 800 E68 464 * 69 85525 800 E69 465 * 466 * 70 4575 800 IA 467 * 71 5375 800 IB 468 * 72 6175 800 IC 469 * 470 * 74 6925 700 S01 471 * 75 7625 700 S02 472 * 76 8325 700 S03 473 * 474 * 80 10525 700 S1 475 * 81 11225 700 S2 476 * 82 11925 700 S3 477 * 83 12625 700 S4 478 * 84 13325 700 S5 479 * 85 14025 700 S6 480 * 86 14725 700 S7 481 * 87 15425 700 S8 482 * 88 16125 700 S9 483 * 89 16825 700 S10 484 * 90 23125 700 S11 485 * 91 23825 700 S12 486 * 92 24525 700 S13 487 * 93 25225 700 S14 488 * 94 25925 700 S15 489 * 95 26625 700 S16 490 * 96 27325 700 S17 491 * 97 28025 700 S18 492 * 98 28725 700 S19 493 * 99 29425 700 S20 494 * 495 * 496 * Channels S21 - S41 are taken from 497 * http://gemma.apple.com:80/dev/technotes/tn/tn1012.html 498 * 499 * 100 30325 800 S21 500 * 101 31125 800 S22 501 * 102 31925 800 S23 502 * 103 32725 800 S24 503 * 104 33525 800 S25 504 * 105 34325 800 S26 505 * 106 35125 800 S27 506 * 107 35925 800 S28 507 * 108 36725 800 S29 508 * 109 37525 800 S30 509 * 110 38325 800 S31 510 * 111 39125 800 S32 511 * 112 39925 800 S33 512 * 113 40725 800 S34 513 * 114 41525 800 S35 514 * 115 42325 800 S36 515 * 116 43125 800 S37 516 * 117 43925 800 S38 517 * 118 44725 800 S39 518 * 119 45525 800 S40 519 * 120 46325 800 S41 520 * 521 * 121 3890 000 IFFREQ 522 * 523 */ 524 static int weurope[] = { 525 121, (int)( 38.90 * FREQFACTOR), 0, 526 100, (int)(303.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 527 90, (int)(231.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR), 528 80, (int)(105.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR), 529 74, (int)( 69.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR), 530 21, (int)(471.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 531 17, (int)(183.25 * FREQFACTOR), (int)(9.00 * FREQFACTOR), 532 16, (int)(175.25 * FREQFACTOR), (int)(9.00 * FREQFACTOR), 533 15, (int)(82.25 * FREQFACTOR), (int)(8.50 * FREQFACTOR), 534 13, (int)(53.75 * FREQFACTOR), (int)(8.50 * FREQFACTOR), 535 5, (int)(175.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR), 536 2, (int)(48.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR), 537 0 538 }; 539 540 /* 541 * Japanese Broadcast Channels: 542 * 543 * 1: 91.25MHz - 3: 103.25MHz 544 * 4: 171.25MHz - 7: 189.25MHz 545 * 8: 193.25MHz - 12: 217.25MHz (VHF) 546 * 13: 471.25MHz - 62: 765.25MHz (UHF) 547 * 548 * IF freq: 45.75 mHz 549 * OR 550 * IF freq: 58.75 mHz 551 */ 552 #define OFFSET 6.00 553 #define IF_FREQ 45.75 554 static int jpnbcst[] = { 555 62, (int)(IF_FREQ * FREQFACTOR), 0, 556 13, (int)(471.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 557 8, (int)(193.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 558 4, (int)(171.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 559 1, (int)( 91.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 560 0 561 }; 562 #undef IF_FREQ 563 #undef OFFSET 564 565 /* 566 * Japanese Cable Channels: 567 * 568 * 1: 91.25MHz - 3: 103.25MHz 569 * 4: 171.25MHz - 7: 189.25MHz 570 * 8: 193.25MHz - 12: 217.25MHz 571 * 13: 109.25MHz - 21: 157.25MHz 572 * 22: 165.25MHz 573 * 23: 223.25MHz - 63: 463.25MHz 574 * 575 * IF freq: 45.75 mHz 576 */ 577 #define OFFSET 6.00 578 #define IF_FREQ 45.75 579 static int jpncable[] = { 580 63, (int)(IF_FREQ * FREQFACTOR), 0, 581 23, (int)(223.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 582 22, (int)(165.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 583 13, (int)(109.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 584 8, (int)(193.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 585 4, (int)(171.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 586 1, (int)( 91.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 587 0 588 }; 589 #undef IF_FREQ 590 #undef OFFSET 591 592 /* 593 * xUSSR Broadcast Channels: 594 * 595 * 1: 49.75MHz - 2: 59.25MHz 596 * 3: 77.25MHz - 5: 93.25MHz 597 * 6: 175.25MHz - 12: 223.25MHz 598 * 13-20 - not exist 599 * 21: 471.25MHz - 34: 575.25MHz 600 * 35: 583.25MHz - 69: 855.25MHz 601 * 602 * Cable channels 603 * 604 * 70: 111.25MHz - 77: 167.25MHz 605 * 78: 231.25MHz -107: 463.25MHz 606 * 607 * IF freq: 38.90 MHz 608 */ 609 #define IF_FREQ 38.90 610 static int xussr[] = { 611 107, (int)(IF_FREQ * FREQFACTOR), 0, 612 78, (int)(231.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 613 70, (int)(111.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 614 35, (int)(583.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 615 21, (int)(471.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 616 6, (int)(175.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 617 3, (int)( 77.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 618 1, (int)( 49.75 * FREQFACTOR), (int)(9.50 * FREQFACTOR), 619 0 620 }; 621 #undef IF_FREQ 622 623 /* 624 * Australian broadcast channels 625 */ 626 #define OFFSET 7.00 627 #define IF_FREQ 38.90 628 static int australia[] = { 629 83, (int)(IF_FREQ * FREQFACTOR), 0, 630 28, (int)(527.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 631 10, (int)(209.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 632 6, (int)(175.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 633 4, (int)( 95.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 634 3, (int)( 86.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 635 1, (int)( 57.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 636 0 637 }; 638 #undef OFFSET 639 #undef IF_FREQ 640 641 /* 642 * France broadcast channels 643 */ 644 #define OFFSET 8.00 645 #define IF_FREQ 38.90 646 static int france[] = { 647 69, (int)(IF_FREQ * FREQFACTOR), 0, 648 21, (int)(471.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 21 -> 69 */ 649 5, (int)(176.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 5 -> 10 */ 650 4, (int)( 63.75 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 4 */ 651 3, (int)( 60.50 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 3 */ 652 1, (int)( 47.75 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 1 2 */ 653 0 654 }; 655 #undef OFFSET 656 #undef IF_FREQ 657 658 static struct { 659 int *ptr; 660 char name[BT848_MAX_CHNLSET_NAME_LEN]; 661 } freqTable[] = { 662 {NULL, ""}, 663 {nabcst, "nabcst"}, 664 {irccable, "cableirc"}, 665 {hrccable, "cablehrc"}, 666 {weurope, "weurope"}, 667 {jpnbcst, "jpnbcst"}, 668 {jpncable, "jpncable"}, 669 {xussr, "xussr"}, 670 {australia, "australia"}, 671 {france, "france"}, 672 673 }; 674 675 #define TBL_CHNL freqTable[ bktr->tuner.chnlset ].ptr[ x ] 676 #define TBL_BASE_FREQ freqTable[ bktr->tuner.chnlset ].ptr[ x + 1 ] 677 #define TBL_OFFSET freqTable[ bktr->tuner.chnlset ].ptr[ x + 2 ] 678 static int 679 frequency_lookup( bktr_ptr_t bktr, int channel ) 680 { 681 int x; 682 683 /* check for "> MAX channel" */ 684 x = 0; 685 if ( channel > TBL_CHNL ) 686 return( -1 ); 687 688 /* search the table for data */ 689 for ( x = 3; TBL_CHNL; x += 3 ) { 690 if ( channel >= TBL_CHNL ) { 691 return( TBL_BASE_FREQ + 692 ((channel - TBL_CHNL) * TBL_OFFSET) ); 693 } 694 } 695 696 /* not found, must be below the MIN channel */ 697 return( -1 ); 698 } 699 #undef TBL_OFFSET 700 #undef TBL_BASE_FREQ 701 #undef TBL_CHNL 702 703 704 #define TBL_IF freqTable[ bktr->tuner.chnlset ].ptr[ 1 ] 705 706 707 /* Initialise the tuner structures in the bktr_softc */ 708 /* This is needed as the tuner details are no longer globally declared */ 709 710 void select_tuner( bktr_ptr_t bktr, int tuner_type ) { 711 if (tuner_type < Bt848_MAX_TUNER) { 712 bktr->card.tuner = &tuners[ tuner_type ]; 713 } else { 714 bktr->card.tuner = NULL; 715 } 716 } 717 718 /* 719 * Tuner Notes: 720 * Programming the tuner properly is quite complicated. 721 * Here are some notes, based on a FM1246 data sheet for a PAL-I tuner. 722 * The tuner (front end) covers 45.75 Mhz - 855.25 Mhz and an FM band of 723 * 87.5 Mhz to 108.0 Mhz. 724 * 725 * RF and IF. RF = radio frequencies, it is the transmitted signal. 726 * IF is the Intermediate Frequency (the offset from the base 727 * signal where the video, color, audio and NICAM signals are. 728 * 729 * Eg, Picture at 38.9 Mhz, Colour at 34.47 MHz, sound at 32.9 MHz 730 * NICAM at 32.348 Mhz. 731 * Strangely enough, there is an IF (intermediate frequency) for 732 * FM Radio which is 10.7 Mhz. 733 * 734 * The tuner also works in Bands. Philips bands are 735 * FM radio band 87.50 to 108.00 MHz 736 * Low band 45.75 to 170.00 MHz 737 * Mid band 170.00 to 450.00 MHz 738 * High band 450.00 to 855.25 MHz 739 * 740 * 741 * Now we need to set the PLL on the tuner to the required freuqncy. 742 * It has a programmable divisor. 743 * For TV we want 744 * N = 16 (freq RF(pc) + freq IF(pc)) pc is picture carrier and RF and IF 745 * are in MHz. 746 747 * For RADIO we want a different equation. 748 * freq IF is 10.70 MHz (so the data sheet tells me) 749 * N = (freq RF + freq IF) / step size 750 * The step size must be set to 50 khz (so the data sheet tells me) 751 * (note this is 50 kHz, the other things are in MHz) 752 * so we end up with N = 20x(freq RF + 10.7) 753 * 754 */ 755 756 #define LOW_BAND 0 757 #define MID_BAND 1 758 #define HIGH_BAND 2 759 #define FM_RADIO_BAND 3 760 761 762 /* Check if these are correct for other than Philips PAL */ 763 #define STATUSBIT_COLD 0x80 764 #define STATUSBIT_LOCK 0x40 765 #define STATUSBIT_TV 0x20 766 #define STATUSBIT_STEREO 0x10 /* valid if FM (aka not TV) */ 767 #define STATUSBIT_ADC 0x07 768 769 /* 770 * set the frequency of the tuner 771 * If 'type' is TV_FREQUENCY, the frequency is freq MHz*16 772 * If 'type' is FM_RADIO_FREQUENCY, the frequency is freq MHz * 100 773 * (note *16 gives is 4 bits of fraction, eg steps of nnn.0625) 774 * 775 */ 776 int 777 tv_freq( bktr_ptr_t bktr, int frequency, int type ) 778 { 779 const struct TUNER* tuner; 780 u_char addr; 781 u_char control; 782 u_char band; 783 int N; 784 int band_select = 0; 785 #if defined( TEST_TUNER_AFC ) 786 int oldFrequency, afcDelta; 787 #endif 788 789 tuner = bktr->card.tuner; 790 if ( tuner == NULL ) 791 return( -1 ); 792 793 if (type == TV_FREQUENCY) { 794 /* 795 * select the band based on frequency 796 * XXX FIXME: get the cross-over points from the tuner struct 797 */ 798 if ( frequency < (160 * FREQFACTOR ) ) 799 band_select = LOW_BAND; 800 else if ( frequency < (454 * FREQFACTOR ) ) 801 band_select = MID_BAND; 802 else 803 band_select = HIGH_BAND; 804 805 #if defined( TEST_TUNER_AFC ) 806 if ( bktr->tuner.afc ) 807 frequency -= 4; 808 #endif 809 /* 810 * N = 16 * { fRF(pc) + fIF(pc) } 811 * or N = 16* fRF(pc) + 16*fIF(pc) } 812 * where: 813 * pc is picture carrier, fRF & fIF are in MHz 814 * 815 * fortunatly, frequency is passed in as MHz * 16 816 * and the TBL_IF frequency is also stored in MHz * 16 817 */ 818 N = frequency + TBL_IF; 819 820 /* set the address of the PLL */ 821 addr = bktr->card.tuner_pllAddr; 822 control = tuner->pllControl[ band_select ]; 823 band = tuner->bandAddrs[ band_select ]; 824 825 if(!(band && control)) /* Don't try to set un- */ 826 return(-1); /* supported modes. */ 827 828 if ( frequency > bktr->tuner.frequency ) { 829 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff ); 830 i2cWrite( bktr, addr, control, band ); 831 } 832 else { 833 i2cWrite( bktr, addr, control, band ); 834 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff ); 835 } 836 837 #if defined( TUNER_AFC ) 838 if ( bktr->tuner.afc == TRUE ) { 839 #if defined( TEST_TUNER_AFC ) 840 oldFrequency = frequency; 841 #endif 842 if ( (N = do_afc( bktr, addr, N )) < 0 ) { 843 /* AFC failed, restore requested frequency */ 844 N = frequency + TBL_IF; 845 #if defined( TEST_TUNER_AFC ) 846 printf("%s: do_afc: failed to lock\n", 847 bktr_name(bktr)); 848 #endif 849 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff ); 850 } 851 else 852 frequency = N - TBL_IF; 853 #if defined( TEST_TUNER_AFC ) 854 printf("%s: do_afc: returned freq %d (%d %% %d)\n", bktr_name(bktr), frequency, frequency / 16, frequency % 16); 855 afcDelta = frequency - oldFrequency; 856 printf("%s: changed by: %d clicks (%d mod %d)\n", bktr_name(bktr), afcDelta, afcDelta / 16, afcDelta % 16); 857 #endif 858 } 859 #endif /* TUNER_AFC */ 860 861 bktr->tuner.frequency = frequency; 862 } 863 864 if ( type == FM_RADIO_FREQUENCY ) { 865 band_select = FM_RADIO_BAND; 866 867 /* 868 * N = { fRF(pc) + fIF(pc) }/step_size 869 * The step size is 50kHz for FM radio. 870 * (eg after 102.35MHz comes 102.40 MHz) 871 * fIF is 10.7 MHz (as detailed in the specs) 872 * 873 * frequency is passed in as MHz * 100 874 * 875 * So, we have N = (frequency/100 + 10.70) /(50/1000) 876 */ 877 N = (frequency + 1070)/5; 878 879 /* set the address of the PLL */ 880 addr = bktr->card.tuner_pllAddr; 881 control = tuner->pllControl[ band_select ]; 882 band = tuner->bandAddrs[ band_select ]; 883 884 if(!(band && control)) /* Don't try to set un- */ 885 return(-1); /* supported modes. */ 886 887 band |= bktr->tuner.radio_mode; /* tuner.radio_mode is set in 888 * the ioctls RADIO_SETMODE 889 * and RADIO_GETMODE */ 890 891 i2cWrite( bktr, addr, control, band ); 892 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff ); 893 894 bktr->tuner.frequency = (N * 5) - 1070; 895 896 897 } 898 899 900 return( 0 ); 901 } 902 903 904 905 #if defined( TUNER_AFC ) 906 /* 907 * 908 */ 909 int 910 do_afc( bktr_ptr_t bktr, int addr, int frequency ) 911 { 912 int step; 913 int status; 914 int origFrequency; 915 916 origFrequency = frequency; 917 918 /* wait for first setting to take effect */ 919 tsleep( BKTR_SLEEP, PZERO, "tuning", hz/8 ); 920 921 if ( (status = i2cRead( bktr, addr + 1 )) < 0 ) 922 return( -1 ); 923 924 #if defined( TEST_TUNER_AFC ) 925 printf( "%s: Original freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status ); 926 #endif 927 for ( step = 0; step < AFC_MAX_STEP; ++step ) { 928 if ( (status = i2cRead( bktr, addr + 1 )) < 0 ) 929 goto fubar; 930 if ( !(status & 0x40) ) { 931 #if defined( TEST_TUNER_AFC ) 932 printf( "%s: no lock!\n", bktr_name(bktr) ); 933 #endif 934 goto fubar; 935 } 936 937 switch( status & AFC_BITS ) { 938 case AFC_FREQ_CENTERED: 939 #if defined( TEST_TUNER_AFC ) 940 printf( "%s: Centered, freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status ); 941 #endif 942 return( frequency ); 943 944 case AFC_FREQ_MINUS_125: 945 case AFC_FREQ_MINUS_62: 946 #if defined( TEST_TUNER_AFC ) 947 printf( "%s: Low, freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status ); 948 #endif 949 --frequency; 950 break; 951 952 case AFC_FREQ_PLUS_62: 953 case AFC_FREQ_PLUS_125: 954 #if defined( TEST_TUNER_AFC ) 955 printf( "%s: Hi, freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status ); 956 #endif 957 ++frequency; 958 break; 959 } 960 961 i2cWrite( bktr, addr, 962 (frequency>>8) & 0x7f, frequency & 0xff ); 963 DELAY( AFC_DELAY ); 964 } 965 966 fubar: 967 i2cWrite( bktr, addr, 968 (origFrequency>>8) & 0x7f, origFrequency & 0xff ); 969 970 return( -1 ); 971 } 972 #endif /* TUNER_AFC */ 973 #undef TBL_IF 974 975 976 /* 977 * Get the Tuner status and signal strength 978 */ 979 int get_tuner_status( bktr_ptr_t bktr ) { 980 return i2cRead( bktr, bktr->card.tuner_pllAddr + 1 ); 981 } 982 983 /* 984 * set the channel of the tuner 985 */ 986 int 987 tv_channel( bktr_ptr_t bktr, int channel ) 988 { 989 int frequency; 990 991 /* calculate the frequency according to tuner type */ 992 if ( (frequency = frequency_lookup( bktr, channel )) < 0 ) 993 return( -1 ); 994 995 /* set the new frequency */ 996 if ( tv_freq( bktr, frequency, TV_FREQUENCY ) < 0 ) 997 return( -1 ); 998 999 /* OK to update records */ 1000 return( (bktr->tuner.channel = channel) ); 1001 } 1002 1003 /* 1004 * get channelset name 1005 */ 1006 int 1007 tuner_getchnlset(struct bktr_chnlset *chnlset) 1008 { 1009 if (( chnlset->index < CHNLSET_MIN ) || 1010 ( chnlset->index > CHNLSET_MAX )) 1011 return( EINVAL ); 1012 1013 memcpy(&chnlset->name, &freqTable[chnlset->index].name, 1014 BT848_MAX_CHNLSET_NAME_LEN); 1015 1016 chnlset->max_channel=freqTable[chnlset->index].ptr[0]; 1017 return( 0 ); 1018 } 1019
Indexes created Tue Sep 30 11:09:46 GMT 2025