bktr_audio.c revision 67164
1/* $FreeBSD: head/sys/dev/bktr/bktr_audio.c 67164 2000-10-15 14:19:01Z phk $ */ 2/* 3 * This is part of the Driver for Video Capture Cards (Frame grabbers) 4 * and TV Tuner cards using the Brooktree Bt848, Bt848A, Bt849A, Bt878, Bt879 5 * chipset. 6 * Copyright Roger Hardiman and Amancio Hasty. 7 * 8 * bktr_audio : This deals with controlling the audio on TV cards, 9 * controlling the Audio Multiplexer (audio source selector). 10 * controlling any MSP34xx stereo audio decoders. 11 * controlling any DPL35xx dolby surroud sound audio decoders. 12 * initialising TDA98xx audio devices. 13 * 14 */ 15 16/* 17 * 1. Redistributions of source code must retain the 18 * Copyright (c) 1997 Amancio Hasty, 1999 Roger Hardiman 19 * All rights reserved. 20 * 21 * Redistribution and use in source and binary forms, with or without 22 * modification, are permitted provided that the following conditions 23 * are met: 24 * 1. Redistributions of source code must retain the above copyright 25 * notice, this list of conditions and the following disclaimer. 26 * 2. Redistributions in binary form must reproduce the above copyright 27 * notice, this list of conditions and the following disclaimer in the 28 * documentation and/or other materials provided with the distribution. 29 * 3. All advertising materials mentioning features or use of this software 30 * must display the following acknowledgement: 31 * This product includes software developed by Amancio Hasty and 32 * Roger Hardiman 33 * 4. The name of the author may not be used to endorse or promote products 34 * derived from this software without specific prior written permission. 35 * 36 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 37 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 38 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 39 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 40 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 41 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 42 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 43 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 44 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 45 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 46 * POSSIBILITY OF SUCH DAMAGE. 47 */ 48 49#include <sys/param.h> 50#include <sys/systm.h> 51#include <sys/kernel.h> 52#include <sys/vnode.h> 53 54#ifdef __FreeBSD__ 55#include <pci/pcivar.h> 56 57#if (__FreeBSD_version >=300000) 58#include <machine/bus_memio.h> /* for bus space */ 59#include <machine/bus.h> 60#include <sys/bus.h> 61#endif 62#endif 63 64#ifdef __NetBSD__ 65#include <sys/proc.h> 66#include <dev/ic/bt8xx.h> /* NetBSD location of .h files */ 67#include <dev/pci/bktr/bktr_reg.h> 68#include <dev/pci/bktr/bktr_core.h> 69#include <dev/pci/bktr/bktr_tuner.h> 70#include <dev/pci/bktr/bktr_card.h> 71#include <dev/pci/bktr/bktr_audio.h> 72#else 73#include <machine/ioctl_meteor.h> /* Traditional location of .h files */ 74#include <machine/ioctl_bt848.h> /* extensions to ioctl_meteor.h */ 75#include <dev/bktr/bktr_reg.h> 76#include <dev/bktr/bktr_core.h> 77#include <dev/bktr/bktr_tuner.h> 78#include <dev/bktr/bktr_card.h> 79#include <dev/bktr/bktr_audio.h> 80#endif 81 82/* 83 * Prototypes for the GV_BCTV specific functions. 84 */ 85void set_bctv_audio( bktr_ptr_t bktr ); 86void bctv_gpio_write( bktr_ptr_t bktr, int port, int val ); 87/*int bctv_gpio_read( bktr_ptr_t bktr, int port );*/ /* Not used */ 88 89 90 91/* 92 * init_audio_devices 93 * Reset any MSP34xx or TDA98xx audio devices. 94 */ 95void init_audio_devices( bktr_ptr_t bktr ) { 96 97 /* enable stereo if appropriate on TDA audio chip */ 98 if ( bktr->card.dbx ) 99 init_BTSC( bktr ); 100 101 /* reset the MSP34xx stereo audio chip */ 102 if ( bktr->card.msp3400c ) 103 msp_dpl_reset( bktr, bktr->msp_addr ); 104 105 /* reset the DPL35xx dolby audio chip */ 106 if ( bktr->card.dpl3518a ) 107 msp_dpl_reset( bktr, bktr->dpl_addr ); 108 109} 110 111 112/* 113 * 114 */ 115#define AUDIOMUX_DISCOVER_NOT 116int 117set_audio( bktr_ptr_t bktr, int cmd ) 118{ 119 u_long temp; 120 volatile u_char idx; 121 122#if defined( AUDIOMUX_DISCOVER ) 123 if ( cmd >= 200 ) 124 cmd -= 200; 125 else 126#endif /* AUDIOMUX_DISCOVER */ 127 128 /* check for existance of audio MUXes */ 129 if ( !bktr->card.audiomuxs[ 4 ] ) 130 return( -1 ); 131 132 switch (cmd) { 133 case AUDIO_TUNER: 134#ifdef BKTR_REVERSEMUTE 135 bktr->audio_mux_select = 3; 136#else 137 bktr->audio_mux_select = 0; 138#endif 139 140 if (bktr->reverse_mute ) 141 bktr->audio_mux_select = 0; 142 else 143 bktr->audio_mux_select = 3; 144 145 break; 146 case AUDIO_EXTERN: 147 bktr->audio_mux_select = 1; 148 break; 149 case AUDIO_INTERN: 150 bktr->audio_mux_select = 2; 151 break; 152 case AUDIO_MUTE: 153 bktr->audio_mute_state = TRUE; /* set mute */ 154 break; 155 case AUDIO_UNMUTE: 156 bktr->audio_mute_state = FALSE; /* clear mute */ 157 break; 158 default: 159 printf("%s: audio cmd error %02x\n", bktr_name(bktr), 160 cmd); 161 return( -1 ); 162 } 163 164 165 /* Most cards have a simple audio multiplexer to select the 166 * audio source. The I/O_GV card has a more advanced multiplexer 167 * and requires special handling. 168 */ 169 if ( bktr->bt848_card == CARD_IO_GV ) { 170 set_bctv_audio( bktr ); 171 return( 0 ); 172 } 173 174 /* Proceed with the simpler audio multiplexer code for the majority 175 * of Bt848 cards. 176 */ 177 178 /* 179 * Leave the upper bits of the GPIO port alone in case they control 180 * something like the dbx or teletext chips. This doesn't guarantee 181 * success, but follows the rule of least astonishment. 182 */ 183 184 if ( bktr->audio_mute_state == TRUE ) { 185#ifdef BKTR_REVERSEMUTE 186 idx = 0; 187#else 188 idx = 3; 189#endif 190 191 if (bktr->reverse_mute ) 192 idx = 3; 193 else 194 idx = 0; 195 196 } 197 else 198 idx = bktr->audio_mux_select; 199 200 temp = INL(bktr, BKTR_GPIO_DATA) & ~bktr->card.gpio_mux_bits; 201#if defined( AUDIOMUX_DISCOVER ) 202 OUTL(bktr, BKTR_GPIO_DATA, temp | (cmd & 0xff)); 203 printf("%s: cmd: %d audio mux %x temp %x \n", bktr_name(bktr), 204 cmd, bktr->card.audiomuxs[ idx ], temp ); 205#else 206 OUTL(bktr, BKTR_GPIO_DATA, temp | bktr->card.audiomuxs[ idx ]); 207#endif /* AUDIOMUX_DISCOVER */ 208 209 return( 0 ); 210} 211 212 213/* 214 * 215 */ 216void 217temp_mute( bktr_ptr_t bktr, int flag ) 218{ 219 static int muteState = FALSE; 220 221 if ( flag == TRUE ) { 222 muteState = bktr->audio_mute_state; 223 set_audio( bktr, AUDIO_MUTE ); /* prevent 'click' */ 224 } 225 else { 226 tsleep( BKTR_SLEEP, PZERO, "tuning", hz/8 ); 227 if ( muteState == FALSE ) 228 set_audio( bktr, AUDIO_UNMUTE ); 229 } 230} 231 232/* address of BTSC/SAP decoder chip */ 233#define TDA9850_WADDR 0xb6 234#define TDA9850_RADDR 0xb7 235 236 237/* registers in the TDA9850 BTSC/dbx chip */ 238#define CON1ADDR 0x04 239#define CON2ADDR 0x05 240#define CON3ADDR 0x06 241#define CON4ADDR 0x07 242#define ALI1ADDR 0x08 243#define ALI2ADDR 0x09 244#define ALI3ADDR 0x0a 245 246/* 247 * initialise the dbx chip 248 * taken from the Linux bttv driver TDA9850 initialisation code 249 */ 250void 251init_BTSC( bktr_ptr_t bktr ) 252{ 253 i2cWrite(bktr, TDA9850_WADDR, CON1ADDR, 0x08); /* noise threshold st */ 254 i2cWrite(bktr, TDA9850_WADDR, CON2ADDR, 0x08); /* noise threshold sap */ 255 i2cWrite(bktr, TDA9850_WADDR, CON3ADDR, 0x40); /* stereo mode */ 256 i2cWrite(bktr, TDA9850_WADDR, CON4ADDR, 0x07); /* 0 dB input gain? */ 257 i2cWrite(bktr, TDA9850_WADDR, ALI1ADDR, 0x10); /* wideband alignment? */ 258 i2cWrite(bktr, TDA9850_WADDR, ALI2ADDR, 0x10); /* spectral alignment? */ 259 i2cWrite(bktr, TDA9850_WADDR, ALI3ADDR, 0x03); 260} 261 262/* 263 * setup the dbx chip 264 * XXX FIXME: alot of work to be done here, this merely unmutes it. 265 */ 266int 267set_BTSC( bktr_ptr_t bktr, int control ) 268{ 269 return( i2cWrite( bktr, TDA9850_WADDR, CON3ADDR, control ) ); 270} 271 272/* 273 * CARD_GV_BCTV specific functions. 274 */ 275 276#define BCTV_AUDIO_MAIN 0x10 /* main audio program */ 277#define BCTV_AUDIO_SUB 0x20 /* sub audio program */ 278#define BCTV_AUDIO_BOTH 0x30 /* main(L) + sub(R) program */ 279 280#define BCTV_GPIO_REG0 1 281#define BCTV_GPIO_REG1 3 282 283#define BCTV_GR0_AUDIO_MODE 3 284#define BCTV_GR0_AUDIO_MAIN 0 /* main program */ 285#define BCTV_GR0_AUDIO_SUB 3 /* sub program */ 286#define BCTV_GR0_AUDIO_BOTH 1 /* main(L) + sub(R) */ 287#define BCTV_GR0_AUDIO_MUTE 4 /* audio mute */ 288#define BCTV_GR0_AUDIO_MONO 8 /* force mono */ 289 290void 291set_bctv_audio( bktr_ptr_t bktr ) 292{ 293 int data; 294 295 switch (bktr->audio_mux_select) { 296 case 1: /* external */ 297 case 2: /* internal */ 298 bctv_gpio_write(bktr, BCTV_GPIO_REG1, 0); 299 break; 300 default: /* tuner */ 301 bctv_gpio_write(bktr, BCTV_GPIO_REG1, 1); 302 break; 303 } 304/* switch (bktr->audio_sap_select) { */ 305 switch (BCTV_AUDIO_BOTH) { 306 case BCTV_AUDIO_SUB: 307 data = BCTV_GR0_AUDIO_SUB; 308 break; 309 case BCTV_AUDIO_BOTH: 310 data = BCTV_GR0_AUDIO_BOTH; 311 break; 312 case BCTV_AUDIO_MAIN: 313 default: 314 data = BCTV_GR0_AUDIO_MAIN; 315 break; 316 } 317 if (bktr->audio_mute_state == TRUE) 318 data |= BCTV_GR0_AUDIO_MUTE; 319 320 bctv_gpio_write(bktr, BCTV_GPIO_REG0, data); 321 322 return; 323} 324 325/* gpio_data bit assignment */ 326#define BCTV_GPIO_ADDR_MASK 0x000300 327#define BCTV_GPIO_WE 0x000400 328#define BCTV_GPIO_OE 0x000800 329#define BCTV_GPIO_VAL_MASK 0x00f000 330 331#define BCTV_GPIO_PORT_MASK 3 332#define BCTV_GPIO_ADDR_SHIFT 8 333#define BCTV_GPIO_VAL_SHIFT 12 334 335/* gpio_out_en value for read/write */ 336#define BCTV_GPIO_OUT_RMASK 0x000f00 337#define BCTV_GPIO_OUT_WMASK 0x00ff00 338 339#define BCTV_BITS 100 340 341void 342bctv_gpio_write( bktr_ptr_t bktr, int port, int val ) 343{ 344 u_long data, outbits; 345 346 port &= BCTV_GPIO_PORT_MASK; 347 switch (port) { 348 case 1: 349 case 3: 350 data = ((val << BCTV_GPIO_VAL_SHIFT) & BCTV_GPIO_VAL_MASK) | 351 ((port << BCTV_GPIO_ADDR_SHIFT) & BCTV_GPIO_ADDR_MASK) | 352 BCTV_GPIO_WE | BCTV_GPIO_OE; 353 outbits = BCTV_GPIO_OUT_WMASK; 354 break; 355 default: 356 return; 357 } 358 OUTL(bktr, BKTR_GPIO_OUT_EN, 0); 359 OUTL(bktr, BKTR_GPIO_DATA, data); 360 OUTL(bktr, BKTR_GPIO_OUT_EN, outbits); 361 DELAY(BCTV_BITS); 362 OUTL(bktr, BKTR_GPIO_DATA, data & ~BCTV_GPIO_WE); 363 DELAY(BCTV_BITS); 364 OUTL(bktr, BKTR_GPIO_DATA, data); 365 DELAY(BCTV_BITS); 366 OUTL(bktr, BKTR_GPIO_DATA, ~0); 367 OUTL(bktr, BKTR_GPIO_OUT_EN, 0); 368} 369 370/* Not yet used 371int 372bctv_gpio_read( bktr_ptr_t bktr, int port ) 373{ 374 u_long data, outbits, ret; 375 376 port &= BCTV_GPIO_PORT_MASK; 377 switch (port) { 378 case 1: 379 case 3: 380 data = ((port << BCTV_GPIO_ADDR_SHIFT) & BCTV_GPIO_ADDR_MASK) | 381 BCTV_GPIO_WE | BCTV_GPIO_OE; 382 outbits = BCTV_GPIO_OUT_RMASK; 383 break; 384 default: 385 return( -1 ); 386 } 387 OUTL(bktr, BKTR_GPIO_OUT_EN, 0); 388 OUTL(bktr, BKTR_GPIO_DATA, data); 389 OUTL(bktr, BKTR_GPIO_OUT_EN, outbits); 390 DELAY(BCTV_BITS); 391 OUTL(bktr, BKTR_GPIO_DATA, data & ~BCTV_GPIO_OE); 392 DELAY(BCTV_BITS); 393 ret = INL(bktr, BKTR_GPIO_DATA); 394 DELAY(BCTV_BITS); 395 OUTL(bktr, BKTR_GPIO_DATA, data); 396 DELAY(BCTV_BITS); 397 OUTL(bktr, BKTR_GPIO_DATA, ~0); 398 OUTL(bktr, BKTR_GPIO_OUT_EN, 0); 399 return( (ret & BCTV_GPIO_VAL_MASK) >> BCTV_GPIO_VAL_SHIFT ); 400} 401*/ 402 403/* 404 * setup the MSP34xx Stereo Audio Chip 405 * This uses the Auto Configuration Option on MSP3410D and MSP3415D chips 406 * and DBX mode selection for MSP3430G chips. 407 * For MSP3400C support, the full programming sequence is required and is 408 * not yet supported. 409 */ 410 411/* Read the MSP version string */ 412void msp_read_id( bktr_ptr_t bktr ){ 413 int rev1=0, rev2=0; 414 rev1 = msp_dpl_read(bktr, bktr->msp_addr, 0x12, 0x001e); 415 rev2 = msp_dpl_read(bktr, bktr->msp_addr, 0x12, 0x001f); 416 417 sprintf(bktr->msp_version_string, "34%02d%c-%c%d", 418 (rev2>>8)&0xff, (rev1&0xff)+'@', ((rev1>>8)&0xff)+'@', rev2&0x1f); 419 420} 421 422 423/* Configure the MSP chip to Auto-detect the audio format. 424 * For the MSP3430G, we use fast autodetect mode 425 * For the MSP3410/3415 there are two schemes for this 426 * a) Fast autodetection - the chip is put into autodetect mode, and the function 427 * returns immediatly. This works in most cases and is the Default Mode. 428 * b) Slow mode. The function sets the MSP3410/3415 chip, then waits for feedback from 429 * the chip and re-programs it if needed. 430 */ 431void msp_autodetect( bktr_ptr_t bktr ) { 432 int auto_detect, loops; 433 int stereo; 434 435 /* MSP3430G - countries with mono and DBX stereo */ 436 if (strncmp("3430G", bktr->msp_version_string, 5) == 0){ 437 438 msp_dpl_write(bktr, bktr->msp_addr, 0x10, 0x0030,0x2003);/* Enable Auto format detection */ 439 msp_dpl_write(bktr, bktr->msp_addr, 0x10, 0x0020,0x0020);/* Standard Select Reg. = BTSC-Stereo*/ 440 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x000E,0x2403);/* darned if I know */ 441 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0008,0x0320);/* Source select = (St or A) */ 442 /* & Ch. Matrix = St */ 443 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0000,0x7300);/* Set volume to 0db gain */ 444 } 445 446 447 /* MSP3410/MSP3415 - countries with mono, stereo using 2 FM channels and NICAM */ 448 /* FAST sound scheme */ 449 if ( (strncmp("3430G", bktr->msp_version_string, 5) != 0) 450 && (bktr->slow_msp_audio == 0) ){ 451 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0000,0x7300);/* Set volume to 0db gain */ 452 msp_dpl_write(bktr, bktr->msp_addr, 0x10, 0x0020,0x0001);/* Enable Auto format detection */ 453 msp_dpl_write(bktr, bktr->msp_addr, 0x10, 0x0021,0x0001);/* Auto selection of NICAM/MONO mode */ 454 } 455 456 457 /* MSP3410/MSP3415 - European Countries where the fast MSP3410/3415 programming fails */ 458 /* SLOW sound scheme */ 459 if ( (strncmp("3430G", bktr->msp_version_string, 5) != 0) 460 && (bktr->slow_msp_audio == 1) ){ 461 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0000,0x7300);/* Set volume to 0db gain */ 462 msp_dpl_write(bktr, bktr->msp_addr, 0x10, 0x0020,0x0001);/* Enable Auto format detection */ 463 464 /* wait for 0.5s max for terrestrial sound autodetection */ 465 loops = 10; 466 do { 467 DELAY(100000); 468 auto_detect = msp_dpl_read(bktr, bktr->msp_addr, 0x10, 0x007e); 469 loops++; 470 } while (auto_detect > 0xff && loops < 50); 471 if (bootverbose)printf ("%s: Result of autodetect after %dms: %d\n", 472 bktr_name(bktr), loops*10, auto_detect); 473 474 /* Now set the audio baseband processing */ 475 switch (auto_detect) { 476 case 0: /* no TV sound standard detected */ 477 break; 478 case 2: /* M Dual FM */ 479 break; 480 case 3: /* B/G Dual FM; German stereo */ 481 /* Read the stereo detection value from DSP reg 0x0018 */ 482 DELAY(20000); 483 stereo = msp_dpl_read(bktr, bktr->msp_addr, 0x12, 0x0018); 484 if (bootverbose)printf ("%s: Stereo reg 0x18 a: %d\n", 485 bktr_name(bktr), stereo); 486 DELAY(20000); 487 stereo = msp_dpl_read(bktr, bktr->msp_addr, 0x12, 0x0018); 488 if (bootverbose)printf ("%s: Stereo reg 0x18 b: %d\n", 489 bktr_name(bktr), stereo); 490 DELAY(20000); 491 stereo = msp_dpl_read(bktr, bktr->msp_addr, 0x12, 0x0018); 492 if (bootverbose)printf ("%s: Stereo reg 0x18 c: %d\n", 493 bktr_name(bktr), stereo); 494 if (stereo > 0x0100 && stereo < 0x8000) { /* Seems to be stereo */ 495 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0008,0x0020);/* Loudspeaker set stereo*/ 496 /* 497 set spatial effect strength to 50% enlargement 498 set spatial effect mode b, stereo basewidth enlargment only 499 */ 500 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0005,0x3f28); 501 } else if (stereo > 0x8000) { /* bilingual mode */ 502 if (bootverbose) printf ("%s: Bilingual mode detected\n", 503 bktr_name(bktr)); 504 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0008,0x0000);/* Loudspeaker */ 505 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0005,0x0000);/* all spatial effects off */ 506 } else { /* must be mono */ 507 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0008,0x0030);/* Loudspeaker */ 508 /* 509 set spatial effect strength to 50% enlargement 510 set spatial effect mode a, stereo basewidth enlargment 511 and pseudo stereo effect with automatic high-pass filter 512 */ 513 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0005,0x3f08); 514 } 515#if 0 516 /* The reset value for Channel matrix mode is FM/AM and SOUNDA/LEFT */ 517 /* We would like STEREO instead val: 0x0020 */ 518 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0008,0x0020);/* Loudspeaker */ 519 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0009,0x0020);/* Headphone */ 520 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x000a,0x0020);/* SCART1 */ 521 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0041,0x0020);/* SCART2 */ 522 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x000b,0x0020);/* I2S */ 523 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x000c,0x0020);/* Quasi-Peak Detector Source */ 524 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x000e,0x0001); 525#endif 526 break; 527 case 8: /* B/G FM NICAM */ 528 msp_dpl_write(bktr, bktr->msp_addr, 0x10, 0x0021,0x0001);/* Auto selection of NICAM/MONO mode */ 529 break; 530 case 9: /* L_AM NICAM or D/K*/ 531 case 10: /* i-FM NICAM */ 532 break; 533 default: 534 if (bootverbose) printf ("%s: Unknown autodetection result value: %d\n", 535 bktr_name(bktr), auto_detect); 536 } 537 538 } 539 540 541 /* uncomment the following line to enable the MSP34xx 1Khz Tone Generator */ 542 /* turn your speaker volume down low before trying this */ 543 /* msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0014, 0x7f40); */ 544} 545 546/* Read the DPL version string */ 547void dpl_read_id( bktr_ptr_t bktr ){ 548 int rev1=0, rev2=0; 549 rev1 = msp_dpl_read(bktr, bktr->dpl_addr, 0x12, 0x001e); 550 rev2 = msp_dpl_read(bktr, bktr->dpl_addr, 0x12, 0x001f); 551 552 sprintf(bktr->dpl_version_string, "34%02d%c-%c%d", 553 ((rev2>>8)&0xff)-1, (rev1&0xff)+'@', ((rev1>>8)&0xff)+'@', rev2&0x1f); 554} 555 556/* Configure the DPL chip to Auto-detect the audio format */ 557void dpl_autodetect( bktr_ptr_t bktr ) { 558 559 /* The following are empiric values tried from the DPL35xx data sheet */ 560 msp_dpl_write(bktr, bktr->dpl_addr, 0x12, 0x000c,0x0320); /* quasi peak detector source dolby 561 lr 0x03xx; quasi peak detector matrix 562 stereo 0xXX20 */ 563 msp_dpl_write(bktr, bktr->dpl_addr, 0x12, 0x0040,0x0060); /* Surround decoder mode; 564 ADAPTIVE/3D-PANORAMA, that means two 565 speakers and no center speaker, all 566 channels L/R/C/S mixed to L and R */ 567 msp_dpl_write(bktr, bktr->dpl_addr, 0x12, 0x0041,0x0620); /* surround source matrix;I2S2/STEREO*/ 568 msp_dpl_write(bktr, bktr->dpl_addr, 0x12, 0x0042,0x1F00); /* surround delay 31ms max */ 569 msp_dpl_write(bktr, bktr->dpl_addr, 0x12, 0x0043,0x0000); /* automatic surround input balance */ 570 msp_dpl_write(bktr, bktr->dpl_addr, 0x12, 0x0044,0x4000); /* surround spatial effect 50% 571 recommended*/ 572 msp_dpl_write(bktr, bktr->dpl_addr, 0x12, 0x0045,0x5400); /* surround panorama effect 66% 573 recommended with PANORAMA mode 574 in 0x0040 set to panorama */ 575} 576 577