1 /* 2 * 1. Redistributions of source code must retain the 3 * Copyright (c) 1997 Amancio Hasty, 1999 Roger Hardiman 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by Amancio Hasty and 17 * Roger Hardiman 18 * 4. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 23 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 24 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 25 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 26 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 27 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 29 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 30 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 * 33 * $FreeBSD: src/sys/dev/bktr/bktr_tuner.c,v 1.12 2003/12/08 07:59:18 obrien Exp $ 34 * $DragonFly: src/sys/dev/video/bktr/bktr_tuner.c,v 1.6 2004/05/15 17:54:13 joerg Exp $ 35 */ 36 37 38 /* 39 * This is part of the Driver for Video Capture Cards (Frame grabbers) 40 * and TV Tuner cards using the Brooktree Bt848, Bt848A, Bt849A, Bt878, Bt879 41 * chipset. 42 * Copyright Roger Hardiman and Amancio Hasty. 43 * 44 * bktr_tuner : This deals with controlling the tuner fitted to TV cards. 45 */ 46 47 #include <sys/param.h> 48 #include <sys/systm.h> 49 #include <sys/kernel.h> 50 #include <sys/vnode.h> 51 52 #include <bus/pci/pcivar.h> 53 54 #include <machine/bus_memio.h> /* for bus space */ 55 #include <machine/bus.h> 56 #include <sys/bus.h> 57 58 #include <dev/video/meteor/ioctl_meteor.h> 59 #include <dev/video/bktr/ioctl_bt848.h> /* extensions to ioctl_meteor.h */ 60 #include <dev/video/bktr/bktr_reg.h> 61 #include <dev/video/bktr/bktr_tuner.h> 62 #include <dev/video/bktr/bktr_card.h> 63 #include <dev/video/bktr/bktr_core.h> 64 65 66 67 #if defined( TUNER_AFC ) 68 #define AFC_DELAY 10000 /* 10 millisend delay */ 69 #define AFC_BITS 0x07 70 #define AFC_FREQ_MINUS_125 0x00 71 #define AFC_FREQ_MINUS_62 0x01 72 #define AFC_FREQ_CENTERED 0x02 73 #define AFC_FREQ_PLUS_62 0x03 74 #define AFC_FREQ_PLUS_125 0x04 75 #define AFC_MAX_STEP (5 * FREQFACTOR) /* no more than 5 MHz */ 76 #endif /* TUNER_AFC */ 77 78 79 #define TTYPE_XXX 0 80 #define TTYPE_NTSC 1 81 #define TTYPE_NTSC_J 2 82 #define TTYPE_PAL 3 83 #define TTYPE_PAL_M 4 84 #define TTYPE_PAL_N 5 85 #define TTYPE_SECAM 6 86 87 #define TSA552x_CB_MSB (0x80) 88 #define TSA552x_CB_CP (1<<6) /* set this for fast tuning */ 89 #define TSA552x_CB_T2 (1<<5) /* test mode - Normally set to 0 */ 90 #define TSA552x_CB_T1 (1<<4) /* test mode - Normally set to 0 */ 91 #define TSA552x_CB_T0 (1<<3) /* test mode - Normally set to 1 */ 92 #define TSA552x_CB_RSA (1<<2) /* 0 for 31.25 khz, 1 for 62.5 kHz */ 93 #define TSA552x_CB_RSB (1<<1) /* 0 for FM 50kHz steps, 1 = Use RSA*/ 94 #define TSA552x_CB_OS (1<<0) /* Set to 0 for normal operation */ 95 96 #define TSA552x_RADIO (TSA552x_CB_MSB | \ 97 TSA552x_CB_T0) 98 99 /* raise the charge pump voltage for fast tuning */ 100 #define TSA552x_FCONTROL (TSA552x_CB_MSB | \ 101 TSA552x_CB_CP | \ 102 TSA552x_CB_T0 | \ 103 TSA552x_CB_RSA | \ 104 TSA552x_CB_RSB) 105 106 /* lower the charge pump voltage for better residual oscillator FM */ 107 #define TSA552x_SCONTROL (TSA552x_CB_MSB | \ 108 TSA552x_CB_T0 | \ 109 TSA552x_CB_RSA | \ 110 TSA552x_CB_RSB) 111 112 /* The control value for the ALPS TSCH5 Tuner */ 113 #define TSCH5_FCONTROL 0x82 114 #define TSCH5_RADIO 0x86 115 116 /* The control value for the ALPS TSBH1 Tuner */ 117 #define TSBH1_FCONTROL 0xce 118 119 120 static const struct TUNER tuners[] = { 121 /* XXX FIXME: fill in the band-switch crosspoints */ 122 /* NO_TUNER */ 123 { "<no>", /* the 'name' */ 124 TTYPE_XXX, /* input type */ 125 { 0x00, /* control byte for Tuner PLL */ 126 0x00, 127 0x00, 128 0x00 }, 129 { 0x00, 0x00 }, /* band-switch crosspoints */ 130 { 0x00, 0x00, 0x00,0x00} }, /* the band-switch values */ 131 132 /* TEMIC_NTSC */ 133 { "Temic NTSC", /* the 'name' */ 134 TTYPE_NTSC, /* input type */ 135 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 136 TSA552x_SCONTROL, 137 TSA552x_SCONTROL, 138 0x00 }, 139 { 0x00, 0x00}, /* band-switch crosspoints */ 140 { 0x02, 0x04, 0x01, 0x00 } }, /* the band-switch values */ 141 142 /* TEMIC_PAL */ 143 { "Temic PAL", /* the 'name' */ 144 TTYPE_PAL, /* input type */ 145 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 146 TSA552x_SCONTROL, 147 TSA552x_SCONTROL, 148 0x00 }, 149 { 0x00, 0x00 }, /* band-switch crosspoints */ 150 { 0x02, 0x04, 0x01, 0x00 } }, /* the band-switch values */ 151 152 /* TEMIC_SECAM */ 153 { "Temic SECAM", /* the 'name' */ 154 TTYPE_SECAM, /* input type */ 155 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 156 TSA552x_SCONTROL, 157 TSA552x_SCONTROL, 158 0x00 }, 159 { 0x00, 0x00 }, /* band-switch crosspoints */ 160 { 0x02, 0x04, 0x01,0x00 } }, /* the band-switch values */ 161 162 /* PHILIPS_NTSC */ 163 { "Philips NTSC", /* the 'name' */ 164 TTYPE_NTSC, /* input type */ 165 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 166 TSA552x_SCONTROL, 167 TSA552x_SCONTROL, 168 0x00 }, 169 { 0x00, 0x00 }, /* band-switch crosspoints */ 170 { 0xa0, 0x90, 0x30, 0x00 } }, /* the band-switch values */ 171 172 /* PHILIPS_PAL */ 173 { "Philips PAL", /* the 'name' */ 174 TTYPE_PAL, /* input type */ 175 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 176 TSA552x_SCONTROL, 177 TSA552x_SCONTROL, 178 0x00 }, 179 { 0x00, 0x00 }, /* band-switch crosspoints */ 180 { 0xa0, 0x90, 0x30, 0x00 } }, /* the band-switch values */ 181 182 /* PHILIPS_SECAM */ 183 { "Philips SECAM", /* the 'name' */ 184 TTYPE_SECAM, /* input type */ 185 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 186 TSA552x_SCONTROL, 187 TSA552x_SCONTROL, 188 0x00 }, 189 { 0x00, 0x00 }, /* band-switch crosspoints */ 190 { 0xa7, 0x97, 0x37, 0x00 } }, /* the band-switch values */ 191 192 /* TEMIC_PAL I */ 193 { "Temic PAL I", /* the 'name' */ 194 TTYPE_PAL, /* input type */ 195 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 196 TSA552x_SCONTROL, 197 TSA552x_SCONTROL, 198 0x00 }, 199 { 0x00, 0x00 }, /* band-switch crosspoints */ 200 { 0x02, 0x04, 0x01,0x00 } }, /* the band-switch values */ 201 202 /* PHILIPS_PALI */ 203 { "Philips PAL I", /* the 'name' */ 204 TTYPE_PAL, /* input type */ 205 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 206 TSA552x_SCONTROL, 207 TSA552x_SCONTROL, 208 0x00 }, 209 { 0x00, 0x00 }, /* band-switch crosspoints */ 210 { 0xa0, 0x90, 0x30,0x00 } }, /* the band-switch values */ 211 212 /* PHILIPS_FR1236_NTSC */ 213 { "Philips FR1236 NTSC FM", /* the 'name' */ 214 TTYPE_NTSC, /* input type */ 215 { TSA552x_FCONTROL, /* control byte for Tuner PLL */ 216 TSA552x_FCONTROL, 217 TSA552x_FCONTROL, 218 TSA552x_RADIO }, 219 { 0x00, 0x00 }, /* band-switch crosspoints */ 220 { 0xa0, 0x90, 0x30,0xa4 } }, /* the band-switch values */ 221 222 /* PHILIPS_FR1216_PAL */ 223 { "Philips FR1216 PAL FM" , /* the 'name' */ 224 TTYPE_PAL, /* input type */ 225 { TSA552x_FCONTROL, /* control byte for Tuner PLL */ 226 TSA552x_FCONTROL, 227 TSA552x_FCONTROL, 228 TSA552x_RADIO }, 229 { 0x00, 0x00 }, /* band-switch crosspoints */ 230 { 0xa0, 0x90, 0x30, 0xa4 } }, /* the band-switch values */ 231 232 /* PHILIPS_FR1236_SECAM */ 233 { "Philips FR1236 SECAM FM", /* the 'name' */ 234 TTYPE_SECAM, /* input type */ 235 { TSA552x_FCONTROL, /* control byte for Tuner PLL */ 236 TSA552x_FCONTROL, 237 TSA552x_FCONTROL, 238 TSA552x_RADIO }, 239 { 0x00, 0x00 }, /* band-switch crosspoints */ 240 { 0xa7, 0x97, 0x37, 0xa4 } }, /* the band-switch values */ 241 242 /* ALPS TSCH5 NTSC */ 243 { "ALPS TSCH5 NTSC FM", /* the 'name' */ 244 TTYPE_NTSC, /* input type */ 245 { TSCH5_FCONTROL, /* control byte for Tuner PLL */ 246 TSCH5_FCONTROL, 247 TSCH5_FCONTROL, 248 TSCH5_RADIO }, 249 { 0x00, 0x00 }, /* band-switch crosspoints */ 250 { 0x14, 0x12, 0x11, 0x04 } }, /* the band-switch values */ 251 252 /* ALPS TSBH1 NTSC */ 253 { "ALPS TSBH1 NTSC", /* the 'name' */ 254 TTYPE_NTSC, /* input type */ 255 { TSBH1_FCONTROL, /* control byte for Tuner PLL */ 256 TSBH1_FCONTROL, 257 TSBH1_FCONTROL, 258 0x00 }, 259 { 0x00, 0x00 }, /* band-switch crosspoints */ 260 { 0x01, 0x02, 0x08, 0x00 } } /* the band-switch values */ 261 }; 262 263 264 /* scaling factor for frequencies expressed as ints */ 265 #define FREQFACTOR 16 266 267 /* 268 * Format: 269 * entry 0: MAX legal channel 270 * entry 1: IF frequency 271 * expressed as fi{mHz} * 16, 272 * eg 45.75mHz == 45.75 * 16 = 732 273 * entry 2: [place holder/future] 274 * entry 3: base of channel record 0 275 * entry 3 + (x*3): base of channel record 'x' 276 * entry LAST: NULL channel entry marking end of records 277 * 278 * Record: 279 * int 0: base channel 280 * int 1: frequency of base channel, 281 * expressed as fb{mHz} * 16, 282 * int 2: offset frequency between channels, 283 * expressed as fo{mHz} * 16, 284 */ 285 286 /* 287 * North American Broadcast Channels: 288 * 289 * 2: 55.25 mHz - 4: 67.25 mHz 290 * 5: 77.25 mHz - 6: 83.25 mHz 291 * 7: 175.25 mHz - 13: 211.25 mHz 292 * 14: 471.25 mHz - 83: 885.25 mHz 293 * 294 * IF freq: 45.75 mHz 295 */ 296 #define OFFSET 6.00 297 static int nabcst[] = { 298 83, (int)( 45.75 * FREQFACTOR), 0, 299 14, (int)(471.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 300 7, (int)(175.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 301 5, (int)( 77.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 302 2, (int)( 55.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 303 0 304 }; 305 #undef OFFSET 306 307 /* 308 * North American Cable Channels, IRC: 309 * 310 * 2: 55.25 mHz - 4: 67.25 mHz 311 * 5: 77.25 mHz - 6: 83.25 mHz 312 * 7: 175.25 mHz - 13: 211.25 mHz 313 * 14: 121.25 mHz - 22: 169.25 mHz 314 * 23: 217.25 mHz - 94: 643.25 mHz 315 * 95: 91.25 mHz - 99: 115.25 mHz 316 * 317 * IF freq: 45.75 mHz 318 */ 319 #define OFFSET 6.00 320 static int irccable[] = { 321 116, (int)( 45.75 * FREQFACTOR), 0, 322 100, (int)(649.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 323 95, (int)( 91.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 324 23, (int)(217.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 325 14, (int)(121.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 326 7, (int)(175.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 327 5, (int)( 77.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 328 2, (int)( 55.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 329 0 330 }; 331 #undef OFFSET 332 333 /* 334 * North American Cable Channels, HRC: 335 * 336 * 2: 54 mHz - 4: 66 mHz 337 * 5: 78 mHz - 6: 84 mHz 338 * 7: 174 mHz - 13: 210 mHz 339 * 14: 120 mHz - 22: 168 mHz 340 * 23: 216 mHz - 94: 642 mHz 341 * 95: 90 mHz - 99: 114 mHz 342 * 343 * IF freq: 45.75 mHz 344 */ 345 #define OFFSET 6.00 346 static int hrccable[] = { 347 116, (int)( 45.75 * FREQFACTOR), 0, 348 100, (int)(648.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 349 95, (int)( 90.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 350 23, (int)(216.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 351 14, (int)(120.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 352 7, (int)(174.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 353 5, (int)( 78.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 354 2, (int)( 54.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 355 0 356 }; 357 #undef OFFSET 358 359 /* 360 * Western European broadcast channels: 361 * 362 * (there are others that appear to vary between countries - rmt) 363 * 364 * here's the table Philips provides: 365 * caution, some of the offsets don't compute... 366 * 367 * 1 4525 700 N21 368 * 369 * 2 4825 700 E2 370 * 3 5525 700 E3 371 * 4 6225 700 E4 372 * 373 * 5 17525 700 E5 374 * 6 18225 700 E6 375 * 7 18925 700 E7 376 * 8 19625 700 E8 377 * 9 20325 700 E9 378 * 10 21025 700 E10 379 * 11 21725 700 E11 380 * 12 22425 700 E12 381 * 382 * 13 5375 700 ITA 383 * 14 6225 700 ITB 384 * 385 * 15 8225 700 ITC 386 * 387 * 16 17525 700 ITD 388 * 17 18325 700 ITE 389 * 390 * 18 19225 700 ITF 391 * 19 20125 700 ITG 392 * 20 21025 700 ITH 393 * 394 * 21 47125 800 E21 395 * 22 47925 800 E22 396 * 23 48725 800 E23 397 * 24 49525 800 E24 398 * 25 50325 800 E25 399 * 26 51125 800 E26 400 * 27 51925 800 E27 401 * 28 52725 800 E28 402 * 29 53525 800 E29 403 * 30 54325 800 E30 404 * 31 55125 800 E31 405 * 32 55925 800 E32 406 * 33 56725 800 E33 407 * 34 57525 800 E34 408 * 35 58325 800 E35 409 * 36 59125 800 E36 410 * 37 59925 800 E37 411 * 38 60725 800 E38 412 * 39 61525 800 E39 413 * 40 62325 800 E40 414 * 41 63125 800 E41 415 * 42 63925 800 E42 416 * 43 64725 800 E43 417 * 44 65525 800 E44 418 * 45 66325 800 E45 419 * 46 67125 800 E46 420 * 47 67925 800 E47 421 * 48 68725 800 E48 422 * 49 69525 800 E49 423 * 50 70325 800 E50 424 * 51 71125 800 E51 425 * 52 71925 800 E52 426 * 53 72725 800 E53 427 * 54 73525 800 E54 428 * 55 74325 800 E55 429 * 56 75125 800 E56 430 * 57 75925 800 E57 431 * 58 76725 800 E58 432 * 59 77525 800 E59 433 * 60 78325 800 E60 434 * 61 79125 800 E61 435 * 62 79925 800 E62 436 * 63 80725 800 E63 437 * 64 81525 800 E64 438 * 65 82325 800 E65 439 * 66 83125 800 E66 440 * 67 83925 800 E67 441 * 68 84725 800 E68 442 * 69 85525 800 E69 443 * 444 * 70 4575 800 IA 445 * 71 5375 800 IB 446 * 72 6175 800 IC 447 * 448 * 74 6925 700 S01 449 * 75 7625 700 S02 450 * 76 8325 700 S03 451 * 452 * 80 10525 700 S1 453 * 81 11225 700 S2 454 * 82 11925 700 S3 455 * 83 12625 700 S4 456 * 84 13325 700 S5 457 * 85 14025 700 S6 458 * 86 14725 700 S7 459 * 87 15425 700 S8 460 * 88 16125 700 S9 461 * 89 16825 700 S10 462 * 90 23125 700 S11 463 * 91 23825 700 S12 464 * 92 24525 700 S13 465 * 93 25225 700 S14 466 * 94 25925 700 S15 467 * 95 26625 700 S16 468 * 96 27325 700 S17 469 * 97 28025 700 S18 470 * 98 28725 700 S19 471 * 99 29425 700 S20 472 * 473 * 474 * Channels S21 - S41 are taken from 475 * http://gemma.apple.com:80/dev/technotes/tn/tn1012.html 476 * 477 * 100 30325 800 S21 478 * 101 31125 800 S22 479 * 102 31925 800 S23 480 * 103 32725 800 S24 481 * 104 33525 800 S25 482 * 105 34325 800 S26 483 * 106 35125 800 S27 484 * 107 35925 800 S28 485 * 108 36725 800 S29 486 * 109 37525 800 S30 487 * 110 38325 800 S31 488 * 111 39125 800 S32 489 * 112 39925 800 S33 490 * 113 40725 800 S34 491 * 114 41525 800 S35 492 * 115 42325 800 S36 493 * 116 43125 800 S37 494 * 117 43925 800 S38 495 * 118 44725 800 S39 496 * 119 45525 800 S40 497 * 120 46325 800 S41 498 * 499 * 121 3890 000 IFFREQ 500 * 501 */ 502 static int weurope[] = { 503 121, (int)( 38.90 * FREQFACTOR), 0, 504 100, (int)(303.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 505 90, (int)(231.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR), 506 80, (int)(105.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR), 507 74, (int)( 69.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR), 508 21, (int)(471.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 509 17, (int)(183.25 * FREQFACTOR), (int)(9.00 * FREQFACTOR), 510 16, (int)(175.25 * FREQFACTOR), (int)(9.00 * FREQFACTOR), 511 15, (int)(82.25 * FREQFACTOR), (int)(8.50 * FREQFACTOR), 512 13, (int)(53.75 * FREQFACTOR), (int)(8.50 * FREQFACTOR), 513 5, (int)(175.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR), 514 2, (int)(48.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR), 515 0 516 }; 517 518 /* 519 * Japanese Broadcast Channels: 520 * 521 * 1: 91.25MHz - 3: 103.25MHz 522 * 4: 171.25MHz - 7: 189.25MHz 523 * 8: 193.25MHz - 12: 217.25MHz (VHF) 524 * 13: 471.25MHz - 62: 765.25MHz (UHF) 525 * 526 * IF freq: 45.75 mHz 527 * OR 528 * IF freq: 58.75 mHz 529 */ 530 #define OFFSET 6.00 531 #define IF_FREQ 45.75 532 static int jpnbcst[] = { 533 62, (int)(IF_FREQ * FREQFACTOR), 0, 534 13, (int)(471.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 535 8, (int)(193.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 536 4, (int)(171.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 537 1, (int)( 91.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 538 0 539 }; 540 #undef IF_FREQ 541 #undef OFFSET 542 543 /* 544 * Japanese Cable Channels: 545 * 546 * 1: 91.25MHz - 3: 103.25MHz 547 * 4: 171.25MHz - 7: 189.25MHz 548 * 8: 193.25MHz - 12: 217.25MHz 549 * 13: 109.25MHz - 21: 157.25MHz 550 * 22: 165.25MHz 551 * 23: 223.25MHz - 63: 463.25MHz 552 * 553 * IF freq: 45.75 mHz 554 */ 555 #define OFFSET 6.00 556 #define IF_FREQ 45.75 557 static int jpncable[] = { 558 63, (int)(IF_FREQ * FREQFACTOR), 0, 559 23, (int)(223.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 560 22, (int)(165.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 561 13, (int)(109.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 562 8, (int)(193.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 563 4, (int)(171.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 564 1, (int)( 91.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 565 0 566 }; 567 #undef IF_FREQ 568 #undef OFFSET 569 570 /* 571 * xUSSR Broadcast Channels: 572 * 573 * 1: 49.75MHz - 2: 59.25MHz 574 * 3: 77.25MHz - 5: 93.25MHz 575 * 6: 175.25MHz - 12: 223.25MHz 576 * 13-20 - not exist 577 * 21: 471.25MHz - 34: 575.25MHz 578 * 35: 583.25MHz - 69: 855.25MHz 579 * 580 * Cable channels 581 * 582 * 70: 111.25MHz - 77: 167.25MHz 583 * 78: 231.25MHz -107: 463.25MHz 584 * 585 * IF freq: 38.90 MHz 586 */ 587 #define IF_FREQ 38.90 588 static int xussr[] = { 589 107, (int)(IF_FREQ * FREQFACTOR), 0, 590 78, (int)(231.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 591 70, (int)(111.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 592 35, (int)(583.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 593 21, (int)(471.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 594 6, (int)(175.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 595 3, (int)( 77.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 596 1, (int)( 49.75 * FREQFACTOR), (int)(9.50 * FREQFACTOR), 597 0 598 }; 599 #undef IF_FREQ 600 601 /* 602 * Australian broadcast channels 603 */ 604 #define OFFSET 7.00 605 #define IF_FREQ 38.90 606 static int australia[] = { 607 83, (int)(IF_FREQ * FREQFACTOR), 0, 608 28, (int)(527.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 609 10, (int)(209.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 610 6, (int)(175.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 611 4, (int)( 95.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 612 3, (int)( 86.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 613 1, (int)( 57.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 614 0 615 }; 616 #undef OFFSET 617 #undef IF_FREQ 618 619 /* 620 * France broadcast channels 621 */ 622 #define OFFSET 8.00 623 #define IF_FREQ 38.90 624 static int france[] = { 625 69, (int)(IF_FREQ * FREQFACTOR), 0, 626 21, (int)(471.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 21 -> 69 */ 627 5, (int)(176.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 5 -> 10 */ 628 4, (int)( 63.75 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 4 */ 629 3, (int)( 60.50 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 3 */ 630 1, (int)( 47.75 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 1 2 */ 631 0 632 }; 633 #undef OFFSET 634 #undef IF_FREQ 635 636 static struct { 637 int *ptr; 638 char name[BT848_MAX_CHNLSET_NAME_LEN]; 639 } freqTable[] = { 640 {NULL, ""}, 641 {nabcst, "nabcst"}, 642 {irccable, "cableirc"}, 643 {hrccable, "cablehrc"}, 644 {weurope, "weurope"}, 645 {jpnbcst, "jpnbcst"}, 646 {jpncable, "jpncable"}, 647 {xussr, "xussr"}, 648 {australia, "australia"}, 649 {france, "france"}, 650 651 }; 652 653 #define TBL_CHNL freqTable[ bktr->tuner.chnlset ].ptr[ x ] 654 #define TBL_BASE_FREQ freqTable[ bktr->tuner.chnlset ].ptr[ x + 1 ] 655 #define TBL_OFFSET freqTable[ bktr->tuner.chnlset ].ptr[ x + 2 ] 656 static int 657 frequency_lookup( bktr_ptr_t bktr, int channel ) 658 { 659 int x; 660 661 /* check for "> MAX channel" */ 662 x = 0; 663 if ( channel > TBL_CHNL ) 664 return( -1 ); 665 666 /* search the table for data */ 667 for ( x = 3; TBL_CHNL; x += 3 ) { 668 if ( channel >= TBL_CHNL ) { 669 return( TBL_BASE_FREQ + 670 ((channel - TBL_CHNL) * TBL_OFFSET) ); 671 } 672 } 673 674 /* not found, must be below the MIN channel */ 675 return( -1 ); 676 } 677 #undef TBL_OFFSET 678 #undef TBL_BASE_FREQ 679 #undef TBL_CHNL 680 681 682 #define TBL_IF freqTable[ bktr->tuner.chnlset ].ptr[ 1 ] 683 684 685 /* Initialise the tuner structures in the bktr_softc */ 686 /* This is needed as the tuner details are no longer globally declared */ 687 688 void select_tuner( bktr_ptr_t bktr, int tuner_type ) { 689 if (tuner_type < Bt848_MAX_TUNER) { 690 bktr->card.tuner = &tuners[ tuner_type ]; 691 } else { 692 bktr->card.tuner = NULL; 693 } 694 } 695 696 /* 697 * Tuner Notes: 698 * Programming the tuner properly is quite complicated. 699 * Here are some notes, based on a FM1246 data sheet for a PAL-I tuner. 700 * The tuner (front end) covers 45.75 Mhz - 855.25 Mhz and an FM band of 701 * 87.5 Mhz to 108.0 Mhz. 702 * 703 * RF and IF. RF = radio frequencies, it is the transmitted signal. 704 * IF is the Intermediate Frequency (the offset from the base 705 * signal where the video, color, audio and NICAM signals are. 706 * 707 * Eg, Picture at 38.9 Mhz, Colour at 34.47 MHz, sound at 32.9 MHz 708 * NICAM at 32.348 Mhz. 709 * Strangely enough, there is an IF (intermediate frequency) for 710 * FM Radio which is 10.7 Mhz. 711 * 712 * The tuner also works in Bands. Philips bands are 713 * FM radio band 87.50 to 108.00 MHz 714 * Low band 45.75 to 170.00 MHz 715 * Mid band 170.00 to 450.00 MHz 716 * High band 450.00 to 855.25 MHz 717 * 718 * 719 * Now we need to set the PLL on the tuner to the required freuqncy. 720 * It has a programmable divisor. 721 * For TV we want 722 * N = 16 (freq RF(pc) + freq IF(pc)) pc is picture carrier and RF and IF 723 * are in MHz. 724 725 * For RADIO we want a different equation. 726 * freq IF is 10.70 MHz (so the data sheet tells me) 727 * N = (freq RF + freq IF) / step size 728 * The step size must be set to 50 khz (so the data sheet tells me) 729 * (note this is 50 kHz, the other things are in MHz) 730 * so we end up with N = 20x(freq RF + 10.7) 731 * 732 */ 733 734 #define LOW_BAND 0 735 #define MID_BAND 1 736 #define HIGH_BAND 2 737 #define FM_RADIO_BAND 3 738 739 740 /* Check if these are correct for other than Philips PAL */ 741 #define STATUSBIT_COLD 0x80 742 #define STATUSBIT_LOCK 0x40 743 #define STATUSBIT_TV 0x20 744 #define STATUSBIT_STEREO 0x10 /* valid if FM (aka not TV) */ 745 #define STATUSBIT_ADC 0x07 746 747 /* 748 * set the frequency of the tuner 749 * If 'type' is TV_FREQUENCY, the frequency is freq MHz*16 750 * If 'type' is FM_RADIO_FREQUENCY, the frequency is freq MHz * 100 751 * (note *16 gives is 4 bits of fraction, eg steps of nnn.0625) 752 * 753 */ 754 int 755 tv_freq( bktr_ptr_t bktr, int frequency, int type ) 756 { 757 const struct TUNER* tuner; 758 u_char addr; 759 u_char control; 760 u_char band; 761 int N; 762 int band_select = 0; 763 #if defined( TEST_TUNER_AFC ) 764 int oldFrequency, afcDelta; 765 #endif 766 767 tuner = bktr->card.tuner; 768 if ( tuner == NULL ) 769 return( -1 ); 770 771 if (type == TV_FREQUENCY) { 772 /* 773 * select the band based on frequency 774 * XXX FIXME: get the cross-over points from the tuner struct 775 */ 776 if ( frequency < (160 * FREQFACTOR ) ) 777 band_select = LOW_BAND; 778 else if ( frequency < (454 * FREQFACTOR ) ) 779 band_select = MID_BAND; 780 else 781 band_select = HIGH_BAND; 782 783 #if defined( TEST_TUNER_AFC ) 784 if ( bktr->tuner.afc ) 785 frequency -= 4; 786 #endif 787 /* 788 * N = 16 * { fRF(pc) + fIF(pc) } 789 * or N = 16* fRF(pc) + 16*fIF(pc) } 790 * where: 791 * pc is picture carrier, fRF & fIF are in MHz 792 * 793 * fortunatly, frequency is passed in as MHz * 16 794 * and the TBL_IF frequency is also stored in MHz * 16 795 */ 796 N = frequency + TBL_IF; 797 798 /* set the address of the PLL */ 799 addr = bktr->card.tuner_pllAddr; 800 control = tuner->pllControl[ band_select ]; 801 band = tuner->bandAddrs[ band_select ]; 802 803 if(!(band && control)) /* Don't try to set un- */ 804 return(-1); /* supported modes. */ 805 806 if ( frequency > bktr->tuner.frequency ) { 807 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff ); 808 i2cWrite( bktr, addr, control, band ); 809 } 810 else { 811 i2cWrite( bktr, addr, control, band ); 812 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff ); 813 } 814 815 #if defined( TUNER_AFC ) 816 if ( bktr->tuner.afc == TRUE ) { 817 #if defined( TEST_TUNER_AFC ) 818 oldFrequency = frequency; 819 #endif 820 if ( (N = do_afc( bktr, addr, N )) < 0 ) { 821 /* AFC failed, restore requested frequency */ 822 N = frequency + TBL_IF; 823 #if defined( TEST_TUNER_AFC ) 824 printf("%s: do_afc: failed to lock\n", 825 bktr_name(bktr)); 826 #endif 827 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff ); 828 } 829 else 830 frequency = N - TBL_IF; 831 #if defined( TEST_TUNER_AFC ) 832 printf("%s: do_afc: returned freq %d (%d %% %d)\n", bktr_name(bktr), frequency, frequency / 16, frequency % 16); 833 afcDelta = frequency - oldFrequency; 834 printf("%s: changed by: %d clicks (%d mod %d)\n", bktr_name(bktr), afcDelta, afcDelta / 16, afcDelta % 16); 835 #endif 836 } 837 #endif /* TUNER_AFC */ 838 839 bktr->tuner.frequency = frequency; 840 } 841 842 if ( type == FM_RADIO_FREQUENCY ) { 843 band_select = FM_RADIO_BAND; 844 845 /* 846 * N = { fRF(pc) + fIF(pc) }/step_size 847 * The step size is 50kHz for FM radio. 848 * (eg after 102.35MHz comes 102.40 MHz) 849 * fIF is 10.7 MHz (as detailed in the specs) 850 * 851 * frequency is passed in as MHz * 100 852 * 853 * So, we have N = (frequency/100 + 10.70) /(50/1000) 854 */ 855 N = (frequency + 1070)/5; 856 857 /* set the address of the PLL */ 858 addr = bktr->card.tuner_pllAddr; 859 control = tuner->pllControl[ band_select ]; 860 band = tuner->bandAddrs[ band_select ]; 861 862 if(!(band && control)) /* Don't try to set un- */ 863 return(-1); /* supported modes. */ 864 865 band |= bktr->tuner.radio_mode; /* tuner.radio_mode is set in 866 * the ioctls RADIO_SETMODE 867 * and RADIO_GETMODE */ 868 869 i2cWrite( bktr, addr, control, band ); 870 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff ); 871 872 bktr->tuner.frequency = (N * 5) - 1070; 873 874 875 } 876 877 878 return( 0 ); 879 } 880 881 882 883 #if defined( TUNER_AFC ) 884 /* 885 * 886 */ 887 int 888 do_afc( bktr_ptr_t bktr, int addr, int frequency ) 889 { 890 int step; 891 int status; 892 int origFrequency; 893 894 origFrequency = frequency; 895 896 /* wait for first setting to take effect */ 897 tsleep( BKTR_SLEEP, 0, "tuning", hz/8 ); 898 899 if ( (status = i2cRead( bktr, addr + 1 )) < 0 ) 900 return( -1 ); 901 902 #if defined( TEST_TUNER_AFC ) 903 printf( "%s: Original freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status ); 904 #endif 905 for ( step = 0; step < AFC_MAX_STEP; ++step ) { 906 if ( (status = i2cRead( bktr, addr + 1 )) < 0 ) 907 goto fubar; 908 if ( !(status & 0x40) ) { 909 #if defined( TEST_TUNER_AFC ) 910 printf( "%s: no lock!\n", bktr_name(bktr) ); 911 #endif 912 goto fubar; 913 } 914 915 switch( status & AFC_BITS ) { 916 case AFC_FREQ_CENTERED: 917 #if defined( TEST_TUNER_AFC ) 918 printf( "%s: Centered, freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status ); 919 #endif 920 return( frequency ); 921 922 case AFC_FREQ_MINUS_125: 923 case AFC_FREQ_MINUS_62: 924 #if defined( TEST_TUNER_AFC ) 925 printf( "%s: Low, freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status ); 926 #endif 927 --frequency; 928 break; 929 930 case AFC_FREQ_PLUS_62: 931 case AFC_FREQ_PLUS_125: 932 #if defined( TEST_TUNER_AFC ) 933 printf( "%s: Hi, freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status ); 934 #endif 935 ++frequency; 936 break; 937 } 938 939 i2cWrite( bktr, addr, 940 (frequency>>8) & 0x7f, frequency & 0xff ); 941 DELAY( AFC_DELAY ); 942 } 943 944 fubar: 945 i2cWrite( bktr, addr, 946 (origFrequency>>8) & 0x7f, origFrequency & 0xff ); 947 948 return( -1 ); 949 } 950 #endif /* TUNER_AFC */ 951 #undef TBL_IF 952 953 954 /* 955 * Get the Tuner status and signal strength 956 */ 957 int get_tuner_status( bktr_ptr_t bktr ) { 958 return i2cRead( bktr, bktr->card.tuner_pllAddr + 1 ); 959 } 960 961 /* 962 * set the channel of the tuner 963 */ 964 int 965 tv_channel( bktr_ptr_t bktr, int channel ) 966 { 967 int frequency; 968 969 /* calculate the frequency according to tuner type */ 970 if ( (frequency = frequency_lookup( bktr, channel )) < 0 ) 971 return( -1 ); 972 973 /* set the new frequency */ 974 if ( tv_freq( bktr, frequency, TV_FREQUENCY ) < 0 ) 975 return( -1 ); 976 977 /* OK to update records */ 978 return( (bktr->tuner.channel = channel) ); 979 } 980 981 /* 982 * get channelset name 983 */ 984 int 985 tuner_getchnlset(struct bktr_chnlset *chnlset) 986 { 987 if (( chnlset->index < CHNLSET_MIN ) || 988 ( chnlset->index > CHNLSET_MAX )) 989 return( EINVAL ); 990 991 memcpy(&chnlset->name, &freqTable[chnlset->index].name, 992 BT848_MAX_CHNLSET_NAME_LEN); 993 994 chnlset->max_channel=freqTable[chnlset->index].ptr[0]; 995 return( 0 ); 996 } 997