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 1.18 2005/01/23 07:13:09 julian Exp 34 * $DragonFly: src/sys/dev/video/bktr/bktr_tuner.c,v 1.7 2005/03/12 11:35:27 corecode 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 void mt2032_set_tv_freq(bktr_ptr_t bktr, unsigned int freq); 121 122 123 static const struct TUNER tuners[] = { 124 /* XXX FIXME: fill in the band-switch crosspoints */ 125 /* NO_TUNER */ 126 { "<no>", /* the 'name' */ 127 TTYPE_XXX, /* input type */ 128 { 0x00, /* control byte for Tuner PLL */ 129 0x00, 130 0x00, 131 0x00 }, 132 { 0x00, 0x00 }, /* band-switch crosspoints */ 133 { 0x00, 0x00, 0x00,0x00} }, /* the band-switch values */ 134 135 /* TEMIC_NTSC */ 136 { "Temic NTSC", /* the 'name' */ 137 TTYPE_NTSC, /* input type */ 138 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 139 TSA552x_SCONTROL, 140 TSA552x_SCONTROL, 141 0x00 }, 142 { 0x00, 0x00}, /* band-switch crosspoints */ 143 { 0x02, 0x04, 0x01, 0x00 } }, /* the band-switch values */ 144 145 /* TEMIC_PAL */ 146 { "Temic PAL", /* the 'name' */ 147 TTYPE_PAL, /* input type */ 148 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 149 TSA552x_SCONTROL, 150 TSA552x_SCONTROL, 151 0x00 }, 152 { 0x00, 0x00 }, /* band-switch crosspoints */ 153 { 0x02, 0x04, 0x01, 0x00 } }, /* the band-switch values */ 154 155 /* TEMIC_SECAM */ 156 { "Temic SECAM", /* the 'name' */ 157 TTYPE_SECAM, /* 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 /* PHILIPS_NTSC */ 166 { "Philips NTSC", /* the 'name' */ 167 TTYPE_NTSC, /* 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 { 0xa0, 0x90, 0x30, 0x00 } }, /* the band-switch values */ 174 175 /* PHILIPS_PAL */ 176 { "Philips PAL", /* the 'name' */ 177 TTYPE_PAL, /* 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 { 0xa0, 0x90, 0x30, 0x00 } }, /* the band-switch values */ 184 185 /* PHILIPS_SECAM */ 186 { "Philips SECAM", /* the 'name' */ 187 TTYPE_SECAM, /* 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 { 0xa7, 0x97, 0x37, 0x00 } }, /* the band-switch values */ 194 195 /* TEMIC_PAL I */ 196 { "Temic PAL I", /* 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 { 0x02, 0x04, 0x01,0x00 } }, /* the band-switch values */ 204 205 /* PHILIPS_PALI */ 206 { "Philips PAL I", /* the 'name' */ 207 TTYPE_PAL, /* 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 { 0xa0, 0x90, 0x30,0x00 } }, /* the band-switch values */ 214 215 /* PHILIPS_FR1236_NTSC */ 216 { "Philips FR1236 NTSC FM", /* the 'name' */ 217 TTYPE_NTSC, /* input type */ 218 { TSA552x_FCONTROL, /* control byte for Tuner PLL */ 219 TSA552x_FCONTROL, 220 TSA552x_FCONTROL, 221 TSA552x_RADIO }, 222 { 0x00, 0x00 }, /* band-switch crosspoints */ 223 { 0xa0, 0x90, 0x30,0xa4 } }, /* the band-switch values */ 224 225 /* PHILIPS_FR1216_PAL */ 226 { "Philips FR1216 PAL FM" , /* the 'name' */ 227 TTYPE_PAL, /* input type */ 228 { TSA552x_FCONTROL, /* control byte for Tuner PLL */ 229 TSA552x_FCONTROL, 230 TSA552x_FCONTROL, 231 TSA552x_RADIO }, 232 { 0x00, 0x00 }, /* band-switch crosspoints */ 233 { 0xa0, 0x90, 0x30, 0xa4 } }, /* the band-switch values */ 234 235 /* PHILIPS_FR1236_SECAM */ 236 { "Philips FR1236 SECAM FM", /* the 'name' */ 237 TTYPE_SECAM, /* 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 { 0xa7, 0x97, 0x37, 0xa4 } }, /* the band-switch values */ 244 245 /* ALPS TSCH5 NTSC */ 246 { "ALPS TSCH5 NTSC FM", /* the 'name' */ 247 TTYPE_NTSC, /* input type */ 248 { TSCH5_FCONTROL, /* control byte for Tuner PLL */ 249 TSCH5_FCONTROL, 250 TSCH5_FCONTROL, 251 TSCH5_RADIO }, 252 { 0x00, 0x00 }, /* band-switch crosspoints */ 253 { 0x14, 0x12, 0x11, 0x04 } }, /* the band-switch values */ 254 255 /* ALPS TSBH1 NTSC */ 256 { "ALPS TSBH1 NTSC", /* the 'name' */ 257 TTYPE_NTSC, /* input type */ 258 { TSBH1_FCONTROL, /* control byte for Tuner PLL */ 259 TSBH1_FCONTROL, 260 TSBH1_FCONTROL, 261 0x00 }, 262 { 0x00, 0x00 }, /* band-switch crosspoints */ 263 { 0x01, 0x02, 0x08, 0x00 } }, /* the band-switch values */ 264 265 /* MT2032 Microtune */ 266 { "MT2032", /* the 'name' */ 267 TTYPE_PAL, /* input type */ 268 { TSA552x_SCONTROL, /* control byte for Tuner PLL */ 269 TSA552x_SCONTROL, 270 TSA552x_SCONTROL, 271 0x00 }, 272 { 0x00, 0x00 }, /* band-switch crosspoints */ 273 { 0xa0, 0x90, 0x30, 0x00 } }, /* the band-switch values */ 274 }; 275 276 277 /* scaling factor for frequencies expressed as ints */ 278 #define FREQFACTOR 16 279 280 /* 281 * Format: 282 * entry 0: MAX legal channel 283 * entry 1: IF frequency 284 * expressed as fi{mHz} * 16, 285 * eg 45.75mHz == 45.75 * 16 = 732 286 * entry 2: [place holder/future] 287 * entry 3: base of channel record 0 288 * entry 3 + (x*3): base of channel record 'x' 289 * entry LAST: NULL channel entry marking end of records 290 * 291 * Record: 292 * int 0: base channel 293 * int 1: frequency of base channel, 294 * expressed as fb{mHz} * 16, 295 * int 2: offset frequency between channels, 296 * expressed as fo{mHz} * 16, 297 */ 298 299 /* 300 * North American Broadcast Channels: 301 * 302 * 2: 55.25 mHz - 4: 67.25 mHz 303 * 5: 77.25 mHz - 6: 83.25 mHz 304 * 7: 175.25 mHz - 13: 211.25 mHz 305 * 14: 471.25 mHz - 83: 885.25 mHz 306 * 307 * IF freq: 45.75 mHz 308 */ 309 #define OFFSET 6.00 310 static int nabcst[] = { 311 83, (int)( 45.75 * FREQFACTOR), 0, 312 14, (int)(471.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 313 7, (int)(175.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 314 5, (int)( 77.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 315 2, (int)( 55.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 316 0 317 }; 318 #undef OFFSET 319 320 /* 321 * North American Cable Channels, IRC: 322 * 323 * 2: 55.25 mHz - 4: 67.25 mHz 324 * 5: 77.25 mHz - 6: 83.25 mHz 325 * 7: 175.25 mHz - 13: 211.25 mHz 326 * 14: 121.25 mHz - 22: 169.25 mHz 327 * 23: 217.25 mHz - 94: 643.25 mHz 328 * 95: 91.25 mHz - 99: 115.25 mHz 329 * 330 * IF freq: 45.75 mHz 331 */ 332 #define OFFSET 6.00 333 static int irccable[] = { 334 116, (int)( 45.75 * FREQFACTOR), 0, 335 100, (int)(649.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 336 95, (int)( 91.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 337 23, (int)(217.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 338 14, (int)(121.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 339 7, (int)(175.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 340 5, (int)( 77.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 341 2, (int)( 55.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 342 0 343 }; 344 #undef OFFSET 345 346 /* 347 * North American Cable Channels, HRC: 348 * 349 * 2: 54 mHz - 4: 66 mHz 350 * 5: 78 mHz - 6: 84 mHz 351 * 7: 174 mHz - 13: 210 mHz 352 * 14: 120 mHz - 22: 168 mHz 353 * 23: 216 mHz - 94: 642 mHz 354 * 95: 90 mHz - 99: 114 mHz 355 * 356 * IF freq: 45.75 mHz 357 */ 358 #define OFFSET 6.00 359 static int hrccable[] = { 360 116, (int)( 45.75 * FREQFACTOR), 0, 361 100, (int)(648.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 362 95, (int)( 90.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 363 23, (int)(216.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 364 14, (int)(120.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 365 7, (int)(174.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 366 5, (int)( 78.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 367 2, (int)( 54.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 368 0 369 }; 370 #undef OFFSET 371 372 /* 373 * Western European broadcast channels: 374 * 375 * (there are others that appear to vary between countries - rmt) 376 * 377 * here's the table Philips provides: 378 * caution, some of the offsets don't compute... 379 * 380 * 1 4525 700 N21 381 * 382 * 2 4825 700 E2 383 * 3 5525 700 E3 384 * 4 6225 700 E4 385 * 386 * 5 17525 700 E5 387 * 6 18225 700 E6 388 * 7 18925 700 E7 389 * 8 19625 700 E8 390 * 9 20325 700 E9 391 * 10 21025 700 E10 392 * 11 21725 700 E11 393 * 12 22425 700 E12 394 * 395 * 13 5375 700 ITA 396 * 14 6225 700 ITB 397 * 398 * 15 8225 700 ITC 399 * 400 * 16 17525 700 ITD 401 * 17 18325 700 ITE 402 * 403 * 18 19225 700 ITF 404 * 19 20125 700 ITG 405 * 20 21025 700 ITH 406 * 407 * 21 47125 800 E21 408 * 22 47925 800 E22 409 * 23 48725 800 E23 410 * 24 49525 800 E24 411 * 25 50325 800 E25 412 * 26 51125 800 E26 413 * 27 51925 800 E27 414 * 28 52725 800 E28 415 * 29 53525 800 E29 416 * 30 54325 800 E30 417 * 31 55125 800 E31 418 * 32 55925 800 E32 419 * 33 56725 800 E33 420 * 34 57525 800 E34 421 * 35 58325 800 E35 422 * 36 59125 800 E36 423 * 37 59925 800 E37 424 * 38 60725 800 E38 425 * 39 61525 800 E39 426 * 40 62325 800 E40 427 * 41 63125 800 E41 428 * 42 63925 800 E42 429 * 43 64725 800 E43 430 * 44 65525 800 E44 431 * 45 66325 800 E45 432 * 46 67125 800 E46 433 * 47 67925 800 E47 434 * 48 68725 800 E48 435 * 49 69525 800 E49 436 * 50 70325 800 E50 437 * 51 71125 800 E51 438 * 52 71925 800 E52 439 * 53 72725 800 E53 440 * 54 73525 800 E54 441 * 55 74325 800 E55 442 * 56 75125 800 E56 443 * 57 75925 800 E57 444 * 58 76725 800 E58 445 * 59 77525 800 E59 446 * 60 78325 800 E60 447 * 61 79125 800 E61 448 * 62 79925 800 E62 449 * 63 80725 800 E63 450 * 64 81525 800 E64 451 * 65 82325 800 E65 452 * 66 83125 800 E66 453 * 67 83925 800 E67 454 * 68 84725 800 E68 455 * 69 85525 800 E69 456 * 457 * 70 4575 800 IA 458 * 71 5375 800 IB 459 * 72 6175 800 IC 460 * 461 * 74 6925 700 S01 462 * 75 7625 700 S02 463 * 76 8325 700 S03 464 * 465 * 80 10525 700 S1 466 * 81 11225 700 S2 467 * 82 11925 700 S3 468 * 83 12625 700 S4 469 * 84 13325 700 S5 470 * 85 14025 700 S6 471 * 86 14725 700 S7 472 * 87 15425 700 S8 473 * 88 16125 700 S9 474 * 89 16825 700 S10 475 * 90 23125 700 S11 476 * 91 23825 700 S12 477 * 92 24525 700 S13 478 * 93 25225 700 S14 479 * 94 25925 700 S15 480 * 95 26625 700 S16 481 * 96 27325 700 S17 482 * 97 28025 700 S18 483 * 98 28725 700 S19 484 * 99 29425 700 S20 485 * 486 * 487 * Channels S21 - S41 are taken from 488 * http://gemma.apple.com:80/dev/technotes/tn/tn1012.html 489 * 490 * 100 30325 800 S21 491 * 101 31125 800 S22 492 * 102 31925 800 S23 493 * 103 32725 800 S24 494 * 104 33525 800 S25 495 * 105 34325 800 S26 496 * 106 35125 800 S27 497 * 107 35925 800 S28 498 * 108 36725 800 S29 499 * 109 37525 800 S30 500 * 110 38325 800 S31 501 * 111 39125 800 S32 502 * 112 39925 800 S33 503 * 113 40725 800 S34 504 * 114 41525 800 S35 505 * 115 42325 800 S36 506 * 116 43125 800 S37 507 * 117 43925 800 S38 508 * 118 44725 800 S39 509 * 119 45525 800 S40 510 * 120 46325 800 S41 511 * 512 * 121 3890 000 IFFREQ 513 * 514 */ 515 static int weurope[] = { 516 121, (int)( 38.90 * FREQFACTOR), 0, 517 100, (int)(303.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 518 90, (int)(231.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR), 519 80, (int)(105.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR), 520 74, (int)( 69.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR), 521 21, (int)(471.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 522 17, (int)(183.25 * FREQFACTOR), (int)(9.00 * FREQFACTOR), 523 16, (int)(175.25 * FREQFACTOR), (int)(9.00 * FREQFACTOR), 524 15, (int)(82.25 * FREQFACTOR), (int)(8.50 * FREQFACTOR), 525 13, (int)(53.75 * FREQFACTOR), (int)(8.50 * FREQFACTOR), 526 5, (int)(175.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR), 527 2, (int)(48.25 * FREQFACTOR), (int)(7.00 * FREQFACTOR), 528 0 529 }; 530 531 /* 532 * Japanese Broadcast Channels: 533 * 534 * 1: 91.25MHz - 3: 103.25MHz 535 * 4: 171.25MHz - 7: 189.25MHz 536 * 8: 193.25MHz - 12: 217.25MHz (VHF) 537 * 13: 471.25MHz - 62: 765.25MHz (UHF) 538 * 539 * IF freq: 45.75 mHz 540 * OR 541 * IF freq: 58.75 mHz 542 */ 543 #define OFFSET 6.00 544 #define IF_FREQ 45.75 545 static int jpnbcst[] = { 546 62, (int)(IF_FREQ * FREQFACTOR), 0, 547 13, (int)(471.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 548 8, (int)(193.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 549 4, (int)(171.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 550 1, (int)( 91.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 551 0 552 }; 553 #undef IF_FREQ 554 #undef OFFSET 555 556 /* 557 * Japanese Cable Channels: 558 * 559 * 1: 91.25MHz - 3: 103.25MHz 560 * 4: 171.25MHz - 7: 189.25MHz 561 * 8: 193.25MHz - 12: 217.25MHz 562 * 13: 109.25MHz - 21: 157.25MHz 563 * 22: 165.25MHz 564 * 23: 223.25MHz - 63: 463.25MHz 565 * 566 * IF freq: 45.75 mHz 567 */ 568 #define OFFSET 6.00 569 #define IF_FREQ 45.75 570 static int jpncable[] = { 571 63, (int)(IF_FREQ * FREQFACTOR), 0, 572 23, (int)(223.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 573 22, (int)(165.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 574 13, (int)(109.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 575 8, (int)(193.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 576 4, (int)(171.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 577 1, (int)( 91.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 578 0 579 }; 580 #undef IF_FREQ 581 #undef OFFSET 582 583 /* 584 * xUSSR Broadcast Channels: 585 * 586 * 1: 49.75MHz - 2: 59.25MHz 587 * 3: 77.25MHz - 5: 93.25MHz 588 * 6: 175.25MHz - 12: 223.25MHz 589 * 13-20 - not exist 590 * 21: 471.25MHz - 34: 575.25MHz 591 * 35: 583.25MHz - 69: 855.25MHz 592 * 593 * Cable channels 594 * 595 * 70: 111.25MHz - 77: 167.25MHz 596 * 78: 231.25MHz -107: 463.25MHz 597 * 598 * IF freq: 38.90 MHz 599 */ 600 #define IF_FREQ 38.90 601 static int xussr[] = { 602 107, (int)(IF_FREQ * FREQFACTOR), 0, 603 78, (int)(231.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 604 70, (int)(111.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 605 35, (int)(583.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 606 21, (int)(471.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 607 6, (int)(175.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 608 3, (int)( 77.25 * FREQFACTOR), (int)(8.00 * FREQFACTOR), 609 1, (int)( 49.75 * FREQFACTOR), (int)(9.50 * FREQFACTOR), 610 0 611 }; 612 #undef IF_FREQ 613 614 /* 615 * Australian broadcast channels 616 */ 617 #define OFFSET 7.00 618 #define IF_FREQ 38.90 619 static int australia[] = { 620 83, (int)(IF_FREQ * FREQFACTOR), 0, 621 28, (int)(527.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 622 10, (int)(209.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 623 6, (int)(175.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 624 4, (int)( 95.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 625 3, (int)( 86.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 626 1, (int)( 57.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), 627 0 628 }; 629 #undef OFFSET 630 #undef IF_FREQ 631 632 /* 633 * France broadcast channels 634 */ 635 #define OFFSET 8.00 636 #define IF_FREQ 38.90 637 static int france[] = { 638 69, (int)(IF_FREQ * FREQFACTOR), 0, 639 21, (int)(471.25 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 21 -> 69 */ 640 5, (int)(176.00 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 5 -> 10 */ 641 4, (int)( 63.75 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 4 */ 642 3, (int)( 60.50 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 3 */ 643 1, (int)( 47.75 * FREQFACTOR), (int)(OFFSET * FREQFACTOR), /* 1 2 */ 644 0 645 }; 646 #undef OFFSET 647 #undef IF_FREQ 648 649 static struct { 650 int *ptr; 651 char name[BT848_MAX_CHNLSET_NAME_LEN]; 652 } freqTable[] = { 653 {NULL, ""}, 654 {nabcst, "nabcst"}, 655 {irccable, "cableirc"}, 656 {hrccable, "cablehrc"}, 657 {weurope, "weurope"}, 658 {jpnbcst, "jpnbcst"}, 659 {jpncable, "jpncable"}, 660 {xussr, "xussr"}, 661 {australia, "australia"}, 662 {france, "france"}, 663 664 }; 665 666 #define TBL_CHNL freqTable[ bktr->tuner.chnlset ].ptr[ x ] 667 #define TBL_BASE_FREQ freqTable[ bktr->tuner.chnlset ].ptr[ x + 1 ] 668 #define TBL_OFFSET freqTable[ bktr->tuner.chnlset ].ptr[ x + 2 ] 669 static int 670 frequency_lookup( bktr_ptr_t bktr, int channel ) 671 { 672 int x; 673 674 /* check for "> MAX channel" */ 675 x = 0; 676 if ( channel > TBL_CHNL ) 677 return( -1 ); 678 679 /* search the table for data */ 680 for ( x = 3; TBL_CHNL; x += 3 ) { 681 if ( channel >= TBL_CHNL ) { 682 return( TBL_BASE_FREQ + 683 ((channel - TBL_CHNL) * TBL_OFFSET) ); 684 } 685 } 686 687 /* not found, must be below the MIN channel */ 688 return( -1 ); 689 } 690 #undef TBL_OFFSET 691 #undef TBL_BASE_FREQ 692 #undef TBL_CHNL 693 694 695 #define TBL_IF freqTable[ bktr->tuner.chnlset ].ptr[ 1 ] 696 697 698 /* Initialise the tuner structures in the bktr_softc */ 699 /* This is needed as the tuner details are no longer globally declared */ 700 701 void select_tuner( bktr_ptr_t bktr, int tuner_type ) { 702 if (tuner_type < Bt848_MAX_TUNER) { 703 bktr->card.tuner = &tuners[ tuner_type ]; 704 } else { 705 bktr->card.tuner = NULL; 706 } 707 } 708 709 /* 710 * Tuner Notes: 711 * Programming the tuner properly is quite complicated. 712 * Here are some notes, based on a FM1246 data sheet for a PAL-I tuner. 713 * The tuner (front end) covers 45.75 Mhz - 855.25 Mhz and an FM band of 714 * 87.5 Mhz to 108.0 Mhz. 715 * 716 * RF and IF. RF = radio frequencies, it is the transmitted signal. 717 * IF is the Intermediate Frequency (the offset from the base 718 * signal where the video, color, audio and NICAM signals are. 719 * 720 * Eg, Picture at 38.9 Mhz, Colour at 34.47 MHz, sound at 32.9 MHz 721 * NICAM at 32.348 Mhz. 722 * Strangely enough, there is an IF (intermediate frequency) for 723 * FM Radio which is 10.7 Mhz. 724 * 725 * The tuner also works in Bands. Philips bands are 726 * FM radio band 87.50 to 108.00 MHz 727 * Low band 45.75 to 170.00 MHz 728 * Mid band 170.00 to 450.00 MHz 729 * High band 450.00 to 855.25 MHz 730 * 731 * 732 * Now we need to set the PLL on the tuner to the required freuqncy. 733 * It has a programmable divisor. 734 * For TV we want 735 * N = 16 (freq RF(pc) + freq IF(pc)) pc is picture carrier and RF and IF 736 * are in MHz. 737 738 * For RADIO we want a different equation. 739 * freq IF is 10.70 MHz (so the data sheet tells me) 740 * N = (freq RF + freq IF) / step size 741 * The step size must be set to 50 khz (so the data sheet tells me) 742 * (note this is 50 kHz, the other things are in MHz) 743 * so we end up with N = 20x(freq RF + 10.7) 744 * 745 */ 746 747 #define LOW_BAND 0 748 #define MID_BAND 1 749 #define HIGH_BAND 2 750 #define FM_RADIO_BAND 3 751 752 753 /* Check if these are correct for other than Philips PAL */ 754 #define STATUSBIT_COLD 0x80 755 #define STATUSBIT_LOCK 0x40 756 #define STATUSBIT_TV 0x20 757 #define STATUSBIT_STEREO 0x10 /* valid if FM (aka not TV) */ 758 #define STATUSBIT_ADC 0x07 759 760 /* 761 * set the frequency of the tuner 762 * If 'type' is TV_FREQUENCY, the frequency is freq MHz*16 763 * If 'type' is FM_RADIO_FREQUENCY, the frequency is freq MHz * 100 764 * (note *16 gives is 4 bits of fraction, eg steps of nnn.0625) 765 * 766 */ 767 int 768 tv_freq( bktr_ptr_t bktr, int frequency, int type ) 769 { 770 const struct TUNER* tuner; 771 u_char addr; 772 u_char control; 773 u_char band; 774 int N; 775 int band_select = 0; 776 #if defined( TEST_TUNER_AFC ) 777 int oldFrequency, afcDelta; 778 #endif 779 780 tuner = bktr->card.tuner; 781 if ( tuner == NULL ) 782 return( -1 ); 783 784 if (tuner == &tuners[TUNER_MT2032]) { 785 mt2032_set_tv_freq(bktr, frequency); 786 return 0; 787 } 788 if (type == TV_FREQUENCY) { 789 /* 790 * select the band based on frequency 791 * XXX FIXME: get the cross-over points from the tuner struct 792 */ 793 if ( frequency < (160 * FREQFACTOR ) ) 794 band_select = LOW_BAND; 795 else if ( frequency < (454 * FREQFACTOR ) ) 796 band_select = MID_BAND; 797 else 798 band_select = HIGH_BAND; 799 800 #if defined( TEST_TUNER_AFC ) 801 if ( bktr->tuner.afc ) 802 frequency -= 4; 803 #endif 804 /* 805 * N = 16 * { fRF(pc) + fIF(pc) } 806 * or N = 16* fRF(pc) + 16*fIF(pc) } 807 * where: 808 * pc is picture carrier, fRF & fIF are in MHz 809 * 810 * fortunatly, frequency is passed in as MHz * 16 811 * and the TBL_IF frequency is also stored in MHz * 16 812 */ 813 N = frequency + TBL_IF; 814 815 /* set the address of the PLL */ 816 addr = bktr->card.tuner_pllAddr; 817 control = tuner->pllControl[ band_select ]; 818 band = tuner->bandAddrs[ band_select ]; 819 820 if(!(band && control)) /* Don't try to set un- */ 821 return(-1); /* supported modes. */ 822 823 if ( frequency > bktr->tuner.frequency ) { 824 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff ); 825 i2cWrite( bktr, addr, control, band ); 826 } 827 else { 828 i2cWrite( bktr, addr, control, band ); 829 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff ); 830 } 831 832 #if defined( TUNER_AFC ) 833 if ( bktr->tuner.afc == TRUE ) { 834 #if defined( TEST_TUNER_AFC ) 835 oldFrequency = frequency; 836 #endif 837 if ( (N = do_afc( bktr, addr, N )) < 0 ) { 838 /* AFC failed, restore requested frequency */ 839 N = frequency + TBL_IF; 840 #if defined( TEST_TUNER_AFC ) 841 printf("%s: do_afc: failed to lock\n", 842 bktr_name(bktr)); 843 #endif 844 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff ); 845 } 846 else 847 frequency = N - TBL_IF; 848 #if defined( TEST_TUNER_AFC ) 849 printf("%s: do_afc: returned freq %d (%d %% %d)\n", bktr_name(bktr), frequency, frequency / 16, frequency % 16); 850 afcDelta = frequency - oldFrequency; 851 printf("%s: changed by: %d clicks (%d mod %d)\n", bktr_name(bktr), afcDelta, afcDelta / 16, afcDelta % 16); 852 #endif 853 } 854 #endif /* TUNER_AFC */ 855 856 bktr->tuner.frequency = frequency; 857 } 858 859 if ( type == FM_RADIO_FREQUENCY ) { 860 band_select = FM_RADIO_BAND; 861 862 /* 863 * N = { fRF(pc) + fIF(pc) }/step_size 864 * The step size is 50kHz for FM radio. 865 * (eg after 102.35MHz comes 102.40 MHz) 866 * fIF is 10.7 MHz (as detailed in the specs) 867 * 868 * frequency is passed in as MHz * 100 869 * 870 * So, we have N = (frequency/100 + 10.70) /(50/1000) 871 */ 872 N = (frequency + 1070)/5; 873 874 /* set the address of the PLL */ 875 addr = bktr->card.tuner_pllAddr; 876 control = tuner->pllControl[ band_select ]; 877 band = tuner->bandAddrs[ band_select ]; 878 879 if(!(band && control)) /* Don't try to set un- */ 880 return(-1); /* supported modes. */ 881 882 band |= bktr->tuner.radio_mode; /* tuner.radio_mode is set in 883 * the ioctls RADIO_SETMODE 884 * and RADIO_GETMODE */ 885 886 i2cWrite( bktr, addr, control, band ); 887 i2cWrite( bktr, addr, (N>>8) & 0x7f, N & 0xff ); 888 889 bktr->tuner.frequency = (N * 5) - 1070; 890 891 892 } 893 894 895 return( 0 ); 896 } 897 898 899 900 #if defined( TUNER_AFC ) 901 /* 902 * 903 */ 904 int 905 do_afc( bktr_ptr_t bktr, int addr, int frequency ) 906 { 907 int step; 908 int status; 909 int origFrequency; 910 911 origFrequency = frequency; 912 913 /* wait for first setting to take effect */ 914 tsleep( BKTR_SLEEP, 0, "tuning", hz/8 ); 915 916 if ( (status = i2cRead( bktr, addr + 1 )) < 0 ) 917 return( -1 ); 918 919 #if defined( TEST_TUNER_AFC ) 920 printf( "%s: Original freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status ); 921 #endif 922 for ( step = 0; step < AFC_MAX_STEP; ++step ) { 923 if ( (status = i2cRead( bktr, addr + 1 )) < 0 ) 924 goto fubar; 925 if ( !(status & 0x40) ) { 926 #if defined( TEST_TUNER_AFC ) 927 printf( "%s: no lock!\n", bktr_name(bktr) ); 928 #endif 929 goto fubar; 930 } 931 932 switch( status & AFC_BITS ) { 933 case AFC_FREQ_CENTERED: 934 #if defined( TEST_TUNER_AFC ) 935 printf( "%s: Centered, freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status ); 936 #endif 937 return( frequency ); 938 939 case AFC_FREQ_MINUS_125: 940 case AFC_FREQ_MINUS_62: 941 #if defined( TEST_TUNER_AFC ) 942 printf( "%s: Low, freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status ); 943 #endif 944 --frequency; 945 break; 946 947 case AFC_FREQ_PLUS_62: 948 case AFC_FREQ_PLUS_125: 949 #if defined( TEST_TUNER_AFC ) 950 printf( "%s: Hi, freq: %d, status: 0x%02x\n", bktr_name(bktr), frequency, status ); 951 #endif 952 ++frequency; 953 break; 954 } 955 956 i2cWrite( bktr, addr, 957 (frequency>>8) & 0x7f, frequency & 0xff ); 958 DELAY( AFC_DELAY ); 959 } 960 961 fubar: 962 i2cWrite( bktr, addr, 963 (origFrequency>>8) & 0x7f, origFrequency & 0xff ); 964 965 return( -1 ); 966 } 967 #endif /* TUNER_AFC */ 968 #undef TBL_IF 969 970 971 /* 972 * Get the Tuner status and signal strength 973 */ 974 int get_tuner_status( bktr_ptr_t bktr ) { 975 if (bktr->card.tuner == &tuners[TUNER_MT2032]) 976 return 0; 977 return i2cRead( bktr, bktr->card.tuner_pllAddr + 1 ); 978 } 979 980 /* 981 * set the channel of the tuner 982 */ 983 int 984 tv_channel( bktr_ptr_t bktr, int channel ) 985 { 986 int frequency; 987 988 /* calculate the frequency according to tuner type */ 989 if ( (frequency = frequency_lookup( bktr, channel )) < 0 ) 990 return( -1 ); 991 992 /* set the new frequency */ 993 if ( tv_freq( bktr, frequency, TV_FREQUENCY ) < 0 ) 994 return( -1 ); 995 996 /* OK to update records */ 997 return( (bktr->tuner.channel = channel) ); 998 } 999 1000 /* 1001 * get channelset name 1002 */ 1003 int 1004 tuner_getchnlset(struct bktr_chnlset *chnlset) 1005 { 1006 if (( chnlset->index < CHNLSET_MIN ) || 1007 ( chnlset->index > CHNLSET_MAX )) 1008 return( EINVAL ); 1009 1010 memcpy(&chnlset->name, &freqTable[chnlset->index].name, 1011 BT848_MAX_CHNLSET_NAME_LEN); 1012 1013 chnlset->max_channel=freqTable[chnlset->index].ptr[0]; 1014 return( 0 ); 1015 } 1016 1017 1018 1019 1020 #define TDA9887_ADDR 0x86 1021 1022 static int 1023 TDA9887_init(bktr_ptr_t bktr, int output2_enable) 1024 { 1025 u_char addr = TDA9887_ADDR; 1026 1027 i2cWrite(bktr, addr, 0, output2_enable ? 0x50 : 0xd0); 1028 i2cWrite(bktr, addr, 1, 0x6e); /* takeover point / de-emphasis */ 1029 1030 /* PAL BG: 0x09 PAL I: 0x0a NTSC: 0x04 */ 1031 #ifdef MT2032_NTSC 1032 i2cWrite(bktr, addr, 2, 0x04); 1033 #else 1034 i2cWrite(bktr, addr, 2, 0x09); 1035 #endif 1036 return 0; 1037 } 1038 1039 1040 1041 #define MT2032_OPTIMIZE_VCO 1 1042 1043 /* holds the value of XOGC register after init */ 1044 static int MT2032_XOGC = 4; 1045 1046 /* card.tuner_pllAddr not set during init */ 1047 #define MT2032_ADDR 0xc0 1048 1049 #ifndef MT2032_ADDR 1050 #define MT2032_ADDR (bktr->card.tuner_pllAddr) 1051 #endif 1052 1053 static int 1054 _MT2032_GetRegister(bktr_ptr_t bktr, u_char regNum) 1055 { 1056 int ch; 1057 1058 if (i2cWrite(bktr, MT2032_ADDR, regNum, -1) == -1) { 1059 if (bootverbose) 1060 printf("%s: MT2032 write failed (i2c addr %#x)\n", 1061 bktr_name(bktr), MT2032_ADDR); 1062 return -1; 1063 } 1064 if ((ch = i2cRead(bktr, MT2032_ADDR + 1)) == -1) { 1065 if (bootverbose) 1066 printf("%s: MT2032 get register %d failed\n", 1067 bktr_name(bktr), regNum); 1068 return -1; 1069 } 1070 return ch; 1071 } 1072 1073 static void 1074 _MT2032_SetRegister(bktr_ptr_t bktr, u_char regNum, u_char data) 1075 { 1076 i2cWrite(bktr, MT2032_ADDR, regNum, data); 1077 } 1078 1079 #define MT2032_GetRegister(r) _MT2032_GetRegister(bktr,r) 1080 #define MT2032_SetRegister(r,d) _MT2032_SetRegister(bktr,r,d) 1081 1082 1083 int 1084 mt2032_init(bktr_ptr_t bktr) 1085 { 1086 u_char rdbuf[22]; 1087 int xogc, xok = 0; 1088 int i; 1089 int x; 1090 1091 TDA9887_init(bktr, 0); 1092 1093 for (i = 0; i < 21; i++) { 1094 if ((x = MT2032_GetRegister(i)) == -1) 1095 break; 1096 rdbuf[i] = x; 1097 } 1098 if (i < 21) 1099 return -1; 1100 1101 printf("%s: MT2032: Companycode=%02x%02x Part=%02x Revision=%02x\n", 1102 bktr_name(bktr), 1103 rdbuf[0x11], rdbuf[0x12], rdbuf[0x13], rdbuf[0x14]); 1104 if (rdbuf[0x13] != 4) { 1105 printf("%s: MT2032 not found or unknown type\n", bktr_name(bktr)); 1106 return -1; 1107 } 1108 1109 /* Initialize Registers per spec. */ 1110 MT2032_SetRegister(2, 0xff); 1111 MT2032_SetRegister(3, 0x0f); 1112 MT2032_SetRegister(4, 0x1f); 1113 MT2032_SetRegister(6, 0xe4); 1114 MT2032_SetRegister(7, 0x8f); 1115 MT2032_SetRegister(8, 0xc3); 1116 MT2032_SetRegister(9, 0x4e); 1117 MT2032_SetRegister(10, 0xec); 1118 MT2032_SetRegister(13, 0x32); 1119 1120 /* Adjust XOGC (register 7), wait for XOK */ 1121 xogc = 7; 1122 do { 1123 DELAY(10000); 1124 xok = MT2032_GetRegister(0x0e) & 0x01; 1125 if (xok == 1) { 1126 break; 1127 } 1128 xogc--; 1129 if (xogc == 3) { 1130 xogc = 4; /* min. 4 per spec */ 1131 break; 1132 } 1133 MT2032_SetRegister(7, 0x88 + xogc); 1134 } while (xok != 1); 1135 1136 TDA9887_init(bktr, 1); 1137 1138 MT2032_XOGC = xogc; 1139 1140 return 0; 1141 } 1142 1143 static int 1144 MT2032_SpurCheck(int f1, int f2, int spectrum_from, int spectrum_to) 1145 { 1146 int n1 = 1, n2, f; 1147 1148 f1 = f1 / 1000; /* scale to kHz to avoid 32bit overflows */ 1149 f2 = f2 / 1000; 1150 spectrum_from /= 1000; 1151 spectrum_to /= 1000; 1152 1153 do { 1154 n2 = -n1; 1155 f = n1 * (f1 - f2); 1156 do { 1157 n2--; 1158 f = f - f2; 1159 if ((f > spectrum_from) && (f < spectrum_to)) { 1160 return 1; 1161 } 1162 } while ((f > (f2 - spectrum_to)) || (n2 > -5)); 1163 n1++; 1164 } while (n1 < 5); 1165 1166 return 0; 1167 } 1168 1169 static int 1170 MT2032_ComputeFreq( 1171 int rfin, 1172 int if1, 1173 int if2, 1174 int spectrum_from, 1175 int spectrum_to, 1176 unsigned char *buf, 1177 int *ret_sel, 1178 int xogc 1179 ) 1180 { /* all in Hz */ 1181 int fref, lo1, lo1n, lo1a, s, sel; 1182 int lo1freq, desired_lo1, desired_lo2, lo2, lo2n, lo2a, 1183 lo2num, lo2freq; 1184 int nLO1adjust; 1185 1186 fref = 5250 * 1000; /* 5.25MHz */ 1187 1188 /* per spec 2.3.1 */ 1189 desired_lo1 = rfin + if1; 1190 lo1 = (2 * (desired_lo1 / 1000) + (fref / 1000)) / (2 * fref / 1000); 1191 lo1freq = lo1 * fref; 1192 desired_lo2 = lo1freq - rfin - if2; 1193 1194 /* per spec 2.3.2 */ 1195 for (nLO1adjust = 1; nLO1adjust < 3; nLO1adjust++) { 1196 if (!MT2032_SpurCheck(lo1freq, desired_lo2, spectrum_from, spectrum_to)) { 1197 break; 1198 } 1199 if (lo1freq < desired_lo1) { 1200 lo1 += nLO1adjust; 1201 } else { 1202 lo1 -= nLO1adjust; 1203 } 1204 1205 lo1freq = lo1 * fref; 1206 desired_lo2 = lo1freq - rfin - if2; 1207 } 1208 1209 /* per spec 2.3.3 */ 1210 s = lo1freq / 1000 / 1000; 1211 1212 if (MT2032_OPTIMIZE_VCO) { 1213 if (s > 1890) { 1214 sel = 0; 1215 } else if (s > 1720) { 1216 sel = 1; 1217 } else if (s > 1530) { 1218 sel = 2; 1219 } else if (s > 1370) { 1220 sel = 3; 1221 } else { 1222 sel = 4;/* >1090 */ 1223 } 1224 } else { 1225 if (s > 1790) { 1226 sel = 0;/* <1958 */ 1227 } else if (s > 1617) { 1228 sel = 1; 1229 } else if (s > 1449) { 1230 sel = 2; 1231 } else if (s > 1291) { 1232 sel = 3; 1233 } else { 1234 sel = 4;/* >1090 */ 1235 } 1236 } 1237 1238 *ret_sel = sel; 1239 1240 /* per spec 2.3.4 */ 1241 lo1n = lo1 / 8; 1242 lo1a = lo1 - (lo1n * 8); 1243 lo2 = desired_lo2 / fref; 1244 lo2n = lo2 / 8; 1245 lo2a = lo2 - (lo2n * 8); 1246 /* scale to fit in 32bit arith */ 1247 lo2num = ((desired_lo2 / 1000) % (fref / 1000)) * 3780 / (fref / 1000); 1248 lo2freq = (lo2a + 8 * lo2n) * fref + lo2num * (fref / 1000) / 3780 * 1000; 1249 1250 if (lo1a < 0 || lo1a > 7 || lo1n < 17 || lo1n > 48 || lo2a < 0 || 1251 lo2a > 7 || lo2n < 17 || lo2n > 30) { 1252 printf("MT2032: parameter out of range\n"); 1253 return -1; 1254 } 1255 /* set up MT2032 register map for transfer over i2c */ 1256 buf[0] = lo1n - 1; 1257 buf[1] = lo1a | (sel << 4); 1258 buf[2] = 0x86; /* LOGC */ 1259 buf[3] = 0x0f; /* reserved */ 1260 buf[4] = 0x1f; 1261 buf[5] = (lo2n - 1) | (lo2a << 5); 1262 if (rfin < 400 * 1000 * 1000) { 1263 buf[6] = 0xe4; 1264 } else { 1265 buf[6] = 0xf4; /* set PKEN per rev 1.2 */ 1266 } 1267 1268 buf[7] = 8 + xogc; 1269 buf[8] = 0xc3; /* reserved */ 1270 buf[9] = 0x4e; /* reserved */ 1271 buf[10] = 0xec; /* reserved */ 1272 buf[11] = (lo2num & 0xff); 1273 buf[12] = (lo2num >> 8) | 0x80; /* Lo2RST */ 1274 1275 return 0; 1276 } 1277 1278 static int 1279 MT2032_CheckLOLock(bktr_ptr_t bktr) 1280 { 1281 int t, lock = 0; 1282 for (t = 0; t < 10; t++) { 1283 lock = MT2032_GetRegister(0x0e) & 0x06; 1284 if (lock == 6) { 1285 break; 1286 } 1287 DELAY(1000); 1288 } 1289 return lock; 1290 } 1291 1292 static int 1293 MT2032_OptimizeVCO(bktr_ptr_t bktr, int sel, int lock) 1294 { 1295 int tad1, lo1a; 1296 1297 tad1 = MT2032_GetRegister(0x0f) & 0x07; 1298 1299 if (tad1 == 0) { 1300 return lock; 1301 } 1302 if (tad1 == 1) { 1303 return lock; 1304 } 1305 if (tad1 == 2) { 1306 if (sel == 0) { 1307 return lock; 1308 } else { 1309 sel--; 1310 } 1311 } else { 1312 if (sel < 4) { 1313 sel++; 1314 } else { 1315 return lock; 1316 } 1317 } 1318 lo1a = MT2032_GetRegister(0x01) & 0x07; 1319 MT2032_SetRegister(0x01, lo1a | (sel << 4)); 1320 lock = MT2032_CheckLOLock(bktr); 1321 return lock; 1322 } 1323 1324 static int 1325 MT2032_SetIFFreq(bktr_ptr_t bktr, int rfin, int if1, int if2, int from, int to) 1326 { 1327 u_char buf[21]; 1328 int lint_try, sel, lock = 0; 1329 1330 if (MT2032_ComputeFreq(rfin, if1, if2, from, to, &buf[0], &sel, MT2032_XOGC) == -1) 1331 return -1; 1332 1333 TDA9887_init(bktr, 0); 1334 1335 /* send only the relevant registers per Rev. 1.2 */ 1336 MT2032_SetRegister(0, buf[0x00]); 1337 MT2032_SetRegister(1, buf[0x01]); 1338 MT2032_SetRegister(2, buf[0x02]); 1339 1340 MT2032_SetRegister(5, buf[0x05]); 1341 MT2032_SetRegister(6, buf[0x06]); 1342 MT2032_SetRegister(7, buf[0x07]); 1343 1344 MT2032_SetRegister(11, buf[0x0B]); 1345 MT2032_SetRegister(12, buf[0x0C]); 1346 1347 /* wait for PLLs to lock (per manual), retry LINT if not. */ 1348 for (lint_try = 0; lint_try < 2; lint_try++) { 1349 lock = MT2032_CheckLOLock(bktr); 1350 1351 if (MT2032_OPTIMIZE_VCO) { 1352 lock = MT2032_OptimizeVCO(bktr, sel, lock); 1353 } 1354 if (lock == 6) { 1355 break; 1356 } 1357 /* set LINT to re-init PLLs */ 1358 MT2032_SetRegister(7, 0x80 + 8 + MT2032_XOGC); 1359 DELAY(10000); 1360 MT2032_SetRegister(7, 8 + MT2032_XOGC); 1361 } 1362 if (lock != 6) 1363 printf("%s: PLL didn't lock\n", bktr_name(bktr)); 1364 1365 MT2032_SetRegister(2, 0x20); 1366 1367 TDA9887_init(bktr, 1); 1368 return 0; 1369 } 1370 1371 static void 1372 mt2032_set_tv_freq(bktr_ptr_t bktr, unsigned int freq) 1373 { 1374 int if2,from,to; 1375 int stat, tad; 1376 1377 #ifdef MT2032_NTSC 1378 from=40750*1000; 1379 to=46750*1000; 1380 if2=45750*1000; 1381 #else 1382 from=32900*1000; 1383 to=39900*1000; 1384 if2=38900*1000; 1385 #endif 1386 1387 if (MT2032_SetIFFreq(bktr, freq*62500 /* freq*1000*1000/16 */, 1388 1090*1000*1000, if2, from, to) == 0) { 1389 bktr->tuner.frequency = freq; 1390 stat = MT2032_GetRegister(0x0e); 1391 tad = MT2032_GetRegister(0x0f); 1392 if (bootverbose) 1393 printf("%s: frequency set to %d, st = %#x, tad = %#x\n", 1394 bktr_name(bktr), freq*62500, stat, tad); 1395 } 1396 } 1397