bktr_tuner.c revision 131180
10SN/A/*- 210260SN/A * 1. Redistributions of source code must retain the 30SN/A * Copyright (c) 1997 Amancio Hasty, 1999 Roger Hardiman 40SN/A * All rights reserved. 50SN/A * 60SN/A * Redistribution and use in source and binary forms, with or without 72362SN/A * modification, are permitted provided that the following conditions 80SN/A * are met: 92362SN/A * 1. Redistributions of source code must retain the above copyright 100SN/A * notice, this list of conditions and the following disclaimer. 110SN/A * 2. Redistributions in binary form must reproduce the above copyright 120SN/A * notice, this list of conditions and the following disclaimer in the 130SN/A * documentation and/or other materials provided with the distribution. 140SN/A * 3. All advertising materials mentioning features or use of this software 150SN/A * must display the following acknowledgement: 160SN/A * This product includes software developed by Amancio Hasty and 170SN/A * Roger Hardiman 180SN/A * 4. The name of the author may not be used to endorse or promote products 190SN/A * derived from this software without specific prior written permission. 200SN/A * 212362SN/A * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 222362SN/A * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 232362SN/A * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 240SN/A * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 250SN/A * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 260SN/A * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 270SN/A * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 280SN/A * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 290SN/A * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 300SN/A * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 310SN/A * POSSIBILITY OF SUCH DAMAGE. 320SN/A */ 330SN/A 340SN/A#include <sys/cdefs.h> 350SN/A__FBSDID("$FreeBSD: head/sys/dev/bktr/bktr_tuner.c 131180 2004-06-27 09:59:02Z schweikh $"); 360SN/A 370SN/A/* 380SN/A * This is part of the Driver for Video Capture Cards (Frame grabbers) 390SN/A * and TV Tuner cards using the Brooktree Bt848, Bt848A, Bt849A, Bt878, Bt879 400SN/A * chipset. 410SN/A * Copyright Roger Hardiman and Amancio Hasty. 420SN/A * 430SN/A * bktr_tuner : This deals with controlling the tuner fitted to TV cards. 440SN/A */ 450SN/A 4614176Schegar#include <sys/param.h> 470SN/A#include <sys/systm.h> 480SN/A#include <sys/kernel.h> 490SN/A#include <sys/vnode.h> 500SN/A#ifdef __NetBSD__ 510SN/A#include <sys/proc.h> 520SN/A#endif 530SN/A 540SN/A#ifdef __FreeBSD__ 550SN/A#if (__FreeBSD_version < 500000) 560SN/A#include <machine/clock.h> /* for DELAY */ 577388SN/A#include <pci/pcivar.h> 580SN/A#else 590SN/A#include <dev/pci/pcivar.h> 600SN/A#endif 610SN/A 620SN/A#if (__FreeBSD_version >=300000) 630SN/A#include <machine/bus_memio.h> /* for bus space */ 640SN/A#include <machine/bus.h> 650SN/A#include <sys/bus.h> 660SN/A#endif 670SN/A#endif 680SN/A 698411SN/A#ifdef __NetBSD__ 7011849Svlivanov#include <dev/ic/bt8xx.h> /* NetBSD .h file location */ 717388SN/A#include <dev/pci/bktr/bktr_reg.h> 720SN/A#include <dev/pci/bktr/bktr_tuner.h> 730SN/A#include <dev/pci/bktr/bktr_card.h> 740SN/A#include <dev/pci/bktr/bktr_core.h> 756485SN/A#else 766485SN/A#include <dev/bktr/ioctl_meteor.h> 770SN/A#include <dev/bktr/ioctl_bt848.h> /* extensions to ioctl_meteor.h */ 780SN/A#include <dev/bktr/bktr_reg.h> 790SN/A#include <dev/bktr/bktr_tuner.h> 800SN/A#include <dev/bktr/bktr_card.h> 810SN/A#include <dev/bktr/bktr_core.h> 820SN/A#endif 830SN/A 840SN/A 850SN/A 860SN/A#if defined( TUNER_AFC ) 870SN/A#define AFC_DELAY 10000 /* 10 millisend delay */ 880SN/A#define AFC_BITS 0x07 890SN/A#define AFC_FREQ_MINUS_125 0x00 900SN/A#define AFC_FREQ_MINUS_62 0x01 910SN/A#define AFC_FREQ_CENTERED 0x02 920SN/A#define AFC_FREQ_PLUS_62 0x03 930SN/A#define AFC_FREQ_PLUS_125 0x04 940SN/A#define AFC_MAX_STEP (5 * FREQFACTOR) /* no more than 5 MHz */ 950SN/A#endif /* TUNER_AFC */ 960SN/A 9710826Scoleenp 980SN/A#define TTYPE_XXX 0 990SN/A#define TTYPE_NTSC 1 1000SN/A#define TTYPE_NTSC_J 2 1010SN/A#define TTYPE_PAL 3 1022884SN/A#define TTYPE_PAL_M 4 1032884SN/A#define TTYPE_PAL_N 5 1040SN/A#define TTYPE_SECAM 6 1050SN/A 1060SN/A#define TSA552x_CB_MSB (0x80) 1070SN/A#define TSA552x_CB_CP (1<<6) /* set this for fast tuning */ 1080SN/A#define TSA552x_CB_T2 (1<<5) /* test mode - Normally set to 0 */ 1090SN/A#define TSA552x_CB_T1 (1<<4) /* test mode - Normally set to 0 */ 1100SN/A#define TSA552x_CB_T0 (1<<3) /* test mode - Normally set to 1 */ 1110SN/A#define TSA552x_CB_RSA (1<<2) /* 0 for 31.25 khz, 1 for 62.5 kHz */ 1122884SN/A#define TSA552x_CB_RSB (1<<1) /* 0 for FM 50kHz steps, 1 = Use RSA*/ 1130SN/A#define TSA552x_CB_OS (1<<0) /* Set to 0 for normal operation */ 1140SN/A 1150SN/A#define TSA552x_RADIO (TSA552x_CB_MSB | \ 1160SN/A TSA552x_CB_T0) 1170SN/A 1180SN/A/* raise the charge pump voltage for fast tuning */ 1190SN/A#define TSA552x_FCONTROL (TSA552x_CB_MSB | \ 1200SN/A TSA552x_CB_CP | \ 1210SN/A TSA552x_CB_T0 | \ 1220SN/A TSA552x_CB_RSA | \ 1230SN/A TSA552x_CB_RSB) 1240SN/A 1250SN/A/* lower the charge pump voltage for better residual oscillator FM */ 1260SN/A#define TSA552x_SCONTROL (TSA552x_CB_MSB | \ 1270SN/A TSA552x_CB_T0 | \ 1280SN/A TSA552x_CB_RSA | \ 1290SN/A TSA552x_CB_RSB) 1300SN/A 1310SN/A/* The control value for the ALPS TSCH5 Tuner */ 1320SN/A#define TSCH5_FCONTROL 0x82 1330SN/A#define TSCH5_RADIO 0x86 1340SN/A 13510826Scoleenp/* The control value for the ALPS TSBH1 Tuner */ 1360SN/A#define TSBH1_FCONTROL 0xce 1370SN/A 1380SN/A 1390SN/Astatic const struct TUNER tuners[] = { 1400SN/A/* XXX FIXME: fill in the band-switch crosspoints */ 1410SN/A /* NO_TUNER */ 1420SN/A { "<no>", /* the 'name' */ 1430SN/A TTYPE_XXX, /* input type */ 1440SN/A { 0x00, /* control byte for Tuner PLL */ 1450SN/A 0x00, 1460SN/A 0x00, 1470SN/A 0x00 }, 1480SN/A { 0x00, 0x00 }, /* band-switch crosspoints */ 1490SN/A { 0x00, 0x00, 0x00,0x00} }, /* the band-switch values */ 1500SN/A 1510SN/A /* TEMIC_NTSC */ 1520SN/A { "Temic NTSC", /* the 'name' */ 1530SN/A TTYPE_NTSC, /* input type */ 1540SN/A { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 1550SN/A TSA552x_SCONTROL, 1560SN/A TSA552x_SCONTROL, 1570SN/A 0x00 }, 1580SN/A { 0x00, 0x00}, /* band-switch crosspoints */ 1590SN/A { 0x02, 0x04, 0x01, 0x00 } }, /* the band-switch values */ 1600SN/A 1610SN/A /* TEMIC_PAL */ 1620SN/A { "Temic PAL", /* the 'name' */ 1630SN/A TTYPE_PAL, /* input type */ 1640SN/A { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 1650SN/A TSA552x_SCONTROL, 1660SN/A TSA552x_SCONTROL, 1670SN/A 0x00 }, 1680SN/A { 0x00, 0x00 }, /* band-switch crosspoints */ 1690SN/A { 0x02, 0x04, 0x01, 0x00 } }, /* the band-switch values */ 1700SN/A 1710SN/A /* TEMIC_SECAM */ 1720SN/A { "Temic SECAM", /* the 'name' */ 1730SN/A TTYPE_SECAM, /* input type */ 1740SN/A { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 1750SN/A TSA552x_SCONTROL, 1760SN/A TSA552x_SCONTROL, 1770SN/A 0x00 }, 1780SN/A { 0x00, 0x00 }, /* band-switch crosspoints */ 1790SN/A { 0x02, 0x04, 0x01,0x00 } }, /* the band-switch values */ 1800SN/A 1810SN/A /* PHILIPS_NTSC */ 1820SN/A { "Philips NTSC", /* the 'name' */ 1830SN/A TTYPE_NTSC, /* input type */ 1840SN/A { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 1850SN/A 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 316static 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 339static 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 365static 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 */ 521static 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 551static 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 576static 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 607static 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 625static 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 643static 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 655static 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 ] 675static int 676frequency_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 (bktr->format_params == BT848_IFORM_F_NTSCJ || \ 702 bktr->format_params == BT848_IFORM_F_NTSCM ? \ 703 nabcst[1] : weurope[1]) 704 705 706/* Initialise the tuner structures in the bktr_softc */ 707/* This is needed as the tuner details are no longer globally declared */ 708 709void select_tuner( bktr_ptr_t bktr, int tuner_type ) { 710 if (tuner_type < Bt848_MAX_TUNER) { 711 bktr->card.tuner = &tuners[ tuner_type ]; 712 } else { 713 bktr->card.tuner = NULL; 714 } 715} 716 717/* 718 * Tuner Notes: 719 * Programming the tuner properly is quite complicated. 720 * Here are some notes, based on a FM1246 data sheet for a PAL-I tuner. 721 * The tuner (front end) covers 45.75 Mhz - 855.25 Mhz and an FM band of 722 * 87.5 Mhz to 108.0 Mhz. 723 * 724 * RF and IF. RF = radio frequencies, it is the transmitted signal. 725 * IF is the Intermediate Frequency (the offset from the base 726 * signal where the video, color, audio and NICAM signals are. 727 * 728 * Eg, Picture at 38.9 Mhz, Colour at 34.47 MHz, sound at 32.9 MHz 729 * NICAM at 32.348 Mhz. 730 * Strangely enough, there is an IF (intermediate frequency) for 731 * FM Radio which is 10.7 Mhz. 732 * 733 * The tuner also works in Bands. Philips bands are 734 * FM radio band 87.50 to 108.00 MHz 735 * Low band 45.75 to 170.00 MHz 736 * Mid band 170.00 to 450.00 MHz 737 * High band 450.00 to 855.25 MHz 738 * 739 * 740 * Now we need to set the PLL on the tuner to the required freuqncy. 741 * It has a programmable divisor. 742 * For TV we want 743 * N = 16 (freq RF(pc) + freq IF(pc)) pc is picture carrier and RF and IF 744 * are in MHz. 745 746 * For RADIO we want a different equation. 747 * freq IF is 10.70 MHz (so the data sheet tells me) 748 * N = (freq RF + freq IF) / step size 749 * The step size must be set to 50 khz (so the data sheet tells me) 750 * (note this is 50 kHz, the other things are in MHz) 751 * so we end up with N = 20x(freq RF + 10.7) 752 * 753 */ 754 755#define LOW_BAND 0 756#define MID_BAND 1 757#define HIGH_BAND 2 758#define FM_RADIO_BAND 3 759 760 761/* Check if these are correct for other than Philips PAL */ 762#define STATUSBIT_COLD 0x80 763#define STATUSBIT_LOCK 0x40 764#define STATUSBIT_TV 0x20 765#define STATUSBIT_STEREO 0x10 /* valid if FM (aka not TV) */ 766#define STATUSBIT_ADC 0x07 767 768/* 769 * set the frequency of the tuner 770 * If 'type' is TV_FREQUENCY, the frequency is freq MHz*16 771 * If 'type' is FM_RADIO_FREQUENCY, the frequency is freq MHz * 100 772 * (note *16 gives is 4 bits of fraction, eg steps of nnn.0625) 773 * 774 */ 775int 776tv_freq( bktr_ptr_t bktr, int frequency, int type ) 777{ 778 const struct TUNER* tuner; 779 u_char addr; 780 u_char control; 781 u_char band; 782 int N; 783 int band_select = 0; 784#if defined( TEST_TUNER_AFC ) 785 int oldFrequency, afcDelta; 786#endif 787 788 tuner = bktr->card.tuner; 789 if ( tuner == NULL ) 790 return( -1 ); 791 792 if (type == TV_FREQUENCY) { 793 /* 794 * select the band based on frequency 795 * XXX FIXME: get the cross-over points from the tuner struct 796 */ 797 if ( frequency < (160 * FREQFACTOR ) ) 798 band_select = LOW_BAND; 799 else if ( frequency < (454 * FREQFACTOR ) ) 800 band_select = MID_BAND; 801 else 802 band_select = HIGH_BAND; 803 804#if defined( TEST_TUNER_AFC ) 805 if ( bktr->tuner.afc ) 806 frequency -= 4; 807#endif 808 /* 809 * N = 16 * { fRF(pc) + fIF(pc) } 810 * or N = 16* fRF(pc) + 16*fIF(pc) } 811 * where: 812 * pc is picture carrier, fRF & fIF are in MHz 813 * 814 * fortunatly, frequency is passed in as MHz * 16 815 * and the TBL_IF frequency is also stored in MHz * 16 816 */ 817 N = frequency + TBL_IF; 818 819 /* set the address of the PLL */ 820 addr = bktr->card.tuner_pllAddr; 821 control = tuner->pllControl[ band_select ]; 822 band = tuner->bandAddrs[ band_select ]; 823 824 if(!(band && control)) /* Don't try to set un- */ 825 return(-1); /* supported modes. */ 826 827 if ( frequency > bktr->tuner.frequency ) { 828 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff ); 829 i2cWrite( bktr, addr, control, band ); 830 } 831 else { 832 i2cWrite( bktr, addr, control, band ); 833 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff ); 834 } 835 836#if defined( TUNER_AFC ) 837 if ( bktr->tuner.afc == TRUE ) { 838#if defined( TEST_TUNER_AFC ) 839 oldFrequency = frequency; 840#endif 841 if ( (N = do_afc( bktr, addr, N )) < 0 ) { 842 /* AFC failed, restore requested frequency */ 843 N = frequency + TBL_IF; 844#if defined( TEST_TUNER_AFC ) 845 printf("%s: do_afc: failed to lock\n", 846 bktr_name(bktr)); 847#endif 848 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff ); 849 } 850 else 851 frequency = N - TBL_IF; 852#if defined( TEST_TUNER_AFC ) 853 printf("%s: do_afc: returned freq %d (%d %% %d)\n", bktr_name(bktr), frequency, frequency / 16, frequency % 16); 854 afcDelta = frequency - oldFrequency; 855 printf("%s: changed by: %d clicks (%d mod %d)\n", bktr_name(bktr), afcDelta, afcDelta / 16, afcDelta % 16); 856#endif 857 } 858#endif /* TUNER_AFC */ 859 860 bktr->tuner.frequency = frequency; 861 } 862 863 if ( type == FM_RADIO_FREQUENCY ) { 864 band_select = FM_RADIO_BAND; 865 866 /* 867 * N = { fRF(pc) + fIF(pc) }/step_size 868 * The step size is 50kHz for FM radio. 869 * (eg after 102.35MHz comes 102.40 MHz) 870 * fIF is 10.7 MHz (as detailed in the specs) 871 * 872 * frequency is passed in as MHz * 100 873 * 874 * So, we have N = (frequency/100 + 10.70) /(50/1000) 875 */ 876 N = (frequency + 1070)/5; 877 878 /* set the address of the PLL */ 879 addr = bktr->card.tuner_pllAddr; 880 control = tuner->pllControl[ band_select ]; 881 band = tuner->bandAddrs[ band_select ]; 882 883 if(!(band && control)) /* Don't try to set un- */ 884 return(-1); /* supported modes. */ 885 886 band |= bktr->tuner.radio_mode; /* tuner.radio_mode is set in 887 * the ioctls RADIO_SETMODE 888 * and RADIO_GETMODE */ 889 890 i2cWrite( bktr, addr, control, band ); 891 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff ); 892 893 bktr->tuner.frequency = (N * 5) - 1070; 894 895 896 } 897 898 899 return( 0 ); 900} 901 902 903 904#if defined( TUNER_AFC ) 905/* 906 * 907 */ 908int 909do_afc( bktr_ptr_t bktr, int addr, int frequency ) 910{ 911 int step; 912 int status; 913 int origFrequency; 914 915 origFrequency = frequency; 916 917 /* wait for first setting to take effect */ 918 tsleep( BKTR_SLEEP, PZERO, "tuning", hz/8 ); 919 920 if ( (status = i2cRead( bktr, addr + 1 )) < 0 ) 921 return( -1 ); 922 923#if defined( TEST_TUNER_AFC ) 924 printf( "%s: Original freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status ); 925#endif 926 for ( step = 0; step < AFC_MAX_STEP; ++step ) { 927 if ( (status = i2cRead( bktr, addr + 1 )) < 0 ) 928 goto fubar; 929 if ( !(status & 0x40) ) { 930#if defined( TEST_TUNER_AFC ) 931 printf( "%s: no lock!\n", bktr_name(bktr) ); 932#endif 933 goto fubar; 934 } 935 936 switch( status & AFC_BITS ) { 937 case AFC_FREQ_CENTERED: 938#if defined( TEST_TUNER_AFC ) 939 printf( "%s: Centered, freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status ); 940#endif 941 return( frequency ); 942 943 case AFC_FREQ_MINUS_125: 944 case AFC_FREQ_MINUS_62: 945#if defined( TEST_TUNER_AFC ) 946 printf( "%s: Low, freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status ); 947#endif 948 --frequency; 949 break; 950 951 case AFC_FREQ_PLUS_62: 952 case AFC_FREQ_PLUS_125: 953#if defined( TEST_TUNER_AFC ) 954 printf( "%s: Hi, freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status ); 955#endif 956 ++frequency; 957 break; 958 } 959 960 i2cWrite( bktr, addr, 961 (frequency>>8) & 0x7f, frequency & 0xff ); 962 DELAY( AFC_DELAY ); 963 } 964 965 fubar: 966 i2cWrite( bktr, addr, 967 (origFrequency>>8) & 0x7f, origFrequency & 0xff ); 968 969 return( -1 ); 970} 971#endif /* TUNER_AFC */ 972#undef TBL_IF 973 974 975/* 976 * Get the Tuner status and signal strength 977 */ 978int get_tuner_status( bktr_ptr_t bktr ) { 979 return i2cRead( bktr, bktr->card.tuner_pllAddr + 1 ); 980} 981 982/* 983 * set the channel of the tuner 984 */ 985int 986tv_channel( bktr_ptr_t bktr, int channel ) 987{ 988 int frequency; 989 990 /* calculate the frequency according to tuner type */ 991 if ( (frequency = frequency_lookup( bktr, channel )) < 0 ) 992 return( -1 ); 993 994 /* set the new frequency */ 995 if ( tv_freq( bktr, frequency, TV_FREQUENCY ) < 0 ) 996 return( -1 ); 997 998 /* OK to update records */ 999 return( (bktr->tuner.channel = channel) ); 1000} 1001 1002/* 1003 * get channelset name 1004 */ 1005int 1006tuner_getchnlset(struct bktr_chnlset *chnlset) 1007{ 1008 if (( chnlset->index < CHNLSET_MIN ) || 1009 ( chnlset->index > CHNLSET_MAX )) 1010 return( EINVAL ); 1011 1012 memcpy(&chnlset->name, &freqTable[chnlset->index].name, 1013 BT848_MAX_CHNLSET_NAME_LEN); 1014 1015 chnlset->max_channel=freqTable[chnlset->index].ptr[0]; 1016 return( 0 ); 1017} 1018