1/* $OpenBSD: bktr_audio.c,v 1.14 2022/01/09 05:42:58 jsg Exp $ */ 2/* $FreeBSD: src/sys/dev/bktr/bktr_audio.c,v 1.8 2000/10/31 13:09:56 roger Exp $ */ 3/* 4 * This is part of the Driver for Video Capture Cards (Frame grabbers) 5 * and TV Tuner cards using the Brooktree Bt848, Bt848A, Bt849A, Bt878, Bt879 6 * chipset. 7 * Copyright Roger Hardiman and Amancio Hasty. 8 * 9 * bktr_audio : This deals with controlling the audio on TV cards, 10 * controlling the Audio Multiplexer (audio source selector). 11 * controlling any MSP34xx stereo audio decoders. 12 * controlling any DPL35xx dolby surround sound audio decoders. 13 * initialising TDA98xx audio devices. 14 * 15 */ 16 17/* 18 * 1. Redistributions of source code must retain the 19 * Copyright (c) 1997 Amancio Hasty, 1999 Roger Hardiman 20 * All rights reserved. 21 * 22 * Redistribution and use in source and binary forms, with or without 23 * modification, are permitted provided that the following conditions 24 * are met: 25 * 1. Redistributions of source code must retain the above copyright 26 * notice, this list of conditions and the following disclaimer. 27 * 2. Redistributions in binary form must reproduce the above copyright 28 * notice, this list of conditions and the following disclaimer in the 29 * documentation and/or other materials provided with the distribution. 30 * 3. All advertising materials mentioning features or use of this software 31 * must display the following acknowledgement: 32 * This product includes software developed by Amancio Hasty and 33 * Roger Hardiman 34 * 4. The name of the author may not be used to endorse or promote products 35 * derived from this software without specific prior written permission. 36 * 37 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 38 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 39 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 40 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 41 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 42 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 43 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 44 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 45 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 46 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 47 * POSSIBILITY OF SUCH DAMAGE. 48 */ 49 50#include <sys/param.h> 51#include <sys/systm.h> 52#include <sys/kernel.h> 53#include <sys/vnode.h> 54 55#include <dev/ic/bt8xx.h> /* OpenBSD location of .h files */ 56#include <dev/pci/bktr/bktr_reg.h> 57#include <dev/pci/bktr/bktr_core.h> 58#include <dev/pci/bktr/bktr_card.h> 59#include <dev/pci/bktr/bktr_audio.h> 60 61/* 62 * Prototypes for the GV_BCTV specific functions. 63 */ 64void set_bctv_audio( bktr_ptr_t bktr ); 65void bctv_gpio_write( bktr_ptr_t bktr, int port, int val ); 66/*int bctv_gpio_read( bktr_ptr_t bktr, int port );*/ /* Not used */ 67 68 69 70/* 71 * init_audio_devices 72 * Reset any MSP34xx or TDA98xx audio devices. 73 */ 74void init_audio_devices( bktr_ptr_t bktr ) { 75 76 /* enable stereo if appropriate on TDA audio chip */ 77 if ( bktr->card.dbx ) 78 init_BTSC( bktr ); 79 80 /* reset the MSP34xx stereo audio chip */ 81 if ( bktr->card.msp3400c ) 82 msp_dpl_reset( bktr, bktr->msp_addr ); 83 84 /* reset the DPL35xx dolby audio chip */ 85 if ( bktr->card.dpl3518a ) 86 msp_dpl_reset( bktr, bktr->dpl_addr ); 87 88} 89 90 91/* 92 * 93 */ 94#define AUDIOMUX_DISCOVER_NOT 95int 96set_audio( bktr_ptr_t bktr, int cmd ) 97{ 98 u_int temp; 99 volatile u_char idx; 100 101#if defined( AUDIOMUX_DISCOVER ) 102 if ( cmd >= 200 ) 103 cmd -= 200; 104 else 105#endif /* AUDIOMUX_DISCOVER */ 106 107 /* check for existence of audio MUXes */ 108 if ( !bktr->card.audiomuxs[ 4 ] ) 109 return( -1 ); 110 111 switch (cmd) { 112 case AUDIO_TUNER: 113 if (bktr->reverse_mute ) 114 bktr->audio_mux_select = 0; 115 else 116 bktr->audio_mux_select = 3; 117 118 break; 119 case AUDIO_EXTERN: 120 bktr->audio_mux_select = 1; 121 break; 122 case AUDIO_INTERN: 123 bktr->audio_mux_select = 2; 124 break; 125 case AUDIO_MUTE: 126 bktr->audio_mute_state = TRUE; /* set mute */ 127 break; 128 case AUDIO_UNMUTE: 129 bktr->audio_mute_state = FALSE; /* clear mute */ 130 break; 131 default: 132 printf("%s: audio cmd error %02x\n", bktr_name(bktr), 133 cmd); 134 return( -1 ); 135 } 136 137 138 /* Most cards have a simple audio multiplexer to select the 139 * audio source. The I/O_GV card has a more advanced multiplexer 140 * and requires special handling. 141 */ 142 if ( bktr->bt848_card == CARD_IO_GV ) { 143 set_bctv_audio( bktr ); 144 return( 0 ); 145 } 146 147 /* Proceed with the simpler audio multiplexer code for the majority 148 * of Bt848 cards. 149 */ 150 151 /* 152 * Leave the upper bits of the GPIO port alone in case they control 153 * something like the dbx or teletext chips. This doesn't guarantee 154 * success, but follows the rule of least astonishment. 155 */ 156 157 if ( bktr->audio_mute_state == TRUE ) { 158 if (bktr->reverse_mute ) 159 idx = 3; 160 else 161 idx = 0; 162 } 163 else 164 idx = bktr->audio_mux_select; 165 166 167 temp = INL(bktr, BKTR_GPIO_DATA) & ~bktr->card.gpio_mux_bits; 168#if defined( AUDIOMUX_DISCOVER ) 169 OUTL(bktr, BKTR_GPIO_DATA, temp | (cmd & 0xff)); 170 printf("%s: cmd: %d audio mux %x temp %x \n", bktr_name(bktr), 171 cmd, bktr->card.audiomuxs[ idx ], temp ); 172#else 173 OUTL(bktr, BKTR_GPIO_DATA, temp | bktr->card.audiomuxs[ idx ]); 174#endif /* AUDIOMUX_DISCOVER */ 175 176 177 178 /* Some new Hauppauge cards do not have an audio mux */ 179 /* Instead we use the MSP34xx chip to select TV audio, Line-In */ 180 /* FM Radio and Mute */ 181 /* Examples of this are the Hauppauge 44xxx MSP34xx models */ 182 /* It is ok to drive both the mux and the MSP34xx chip. */ 183 /* If there is no mux, the MSP does the switching of the audio source */ 184 /* If there is a mux, it does the switching of the audio source */ 185 186 if ((bktr->card.msp3400c) && (bktr->audio_mux_present == 0)) { 187 188 if (bktr->audio_mute_state == TRUE ) { 189 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0000, 0x0000); /* volume to MUTE */ 190 } else { 191 if(bktr->audio_mux_select == 0) { /* TV Tuner */ 192 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0000, 0x7300); /* 0 db volume */ 193 if (bktr->msp_source_selected != 0) msp_autodetect(bktr); /* setup TV audio mode */ 194 bktr->msp_source_selected = 0; 195 } 196 if(bktr->audio_mux_select == 1) { /* Line In */ 197 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0000, 0x7300); /* 0 db volume */ 198 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x000d, 0x1900); /* scart prescale */ 199 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0008, 0x0220); /* SCART | STEREO */ 200 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0013, 0x0000); /* DSP In = SC1_IN_L/R */ 201 bktr->msp_source_selected = 1; 202 } 203 204 if(bktr->audio_mux_select == 2) { /* FM Radio */ 205 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0000, 0x7300); /* 0 db volume */ 206 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x000d, 0x1900); /* scart prescale */ 207 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0008, 0x0220); /* SCART | STEREO */ 208 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0013, 0x0200); /* DSP In = SC2_IN_L/R */ 209 bktr->msp_source_selected = 2; 210 } 211 } 212 } 213 214 215 return( 0 ); 216} 217 218 219/* 220 * 221 */ 222void 223temp_mute( bktr_ptr_t bktr, int flag ) 224{ 225 static int muteState = FALSE; 226 227 if ( flag == TRUE ) { 228 muteState = bktr->audio_mute_state; 229 set_audio( bktr, AUDIO_MUTE ); /* prevent 'click' */ 230 } 231 else { 232 tsleep_nsec( BKTR_SLEEP, PZERO, "tuning", MSEC_TO_NSEC(125) ); 233 if ( muteState == FALSE ) 234 set_audio( bktr, AUDIO_UNMUTE ); 235 } 236} 237 238/* address of BTSC/SAP decoder chip */ 239#define TDA9850_WADDR 0xb6 240#define TDA9850_RADDR 0xb7 241 242 243/* registers in the TDA9850 BTSC/dbx chip */ 244#define CON1ADDR 0x04 245#define CON2ADDR 0x05 246#define CON3ADDR 0x06 247#define CON4ADDR 0x07 248#define ALI1ADDR 0x08 249#define ALI2ADDR 0x09 250#define ALI3ADDR 0x0a 251 252/* 253 * initialise the dbx chip 254 * taken from the Linux bttv driver TDA9850 initialisation code 255 */ 256void 257init_BTSC( bktr_ptr_t bktr ) 258{ 259 i2cWrite(bktr, TDA9850_WADDR, CON1ADDR, 0x08); /* noise threshold st */ 260 i2cWrite(bktr, TDA9850_WADDR, CON2ADDR, 0x08); /* noise threshold sap */ 261 i2cWrite(bktr, TDA9850_WADDR, CON3ADDR, 0x40); /* stereo mode */ 262 i2cWrite(bktr, TDA9850_WADDR, CON4ADDR, 0x07); /* 0 dB input gain? */ 263 i2cWrite(bktr, TDA9850_WADDR, ALI1ADDR, 0x10); /* wideband alignment? */ 264 i2cWrite(bktr, TDA9850_WADDR, ALI2ADDR, 0x10); /* spectral alignment? */ 265 i2cWrite(bktr, TDA9850_WADDR, ALI3ADDR, 0x03); 266} 267 268/* 269 * setup the dbx chip 270 * XXX FIXME: alot of work to be done here, this merely unmutes it. 271 */ 272int 273set_BTSC( bktr_ptr_t bktr, int control ) 274{ 275 return( i2cWrite( bktr, TDA9850_WADDR, CON3ADDR, control ) ); 276} 277 278/* 279 * CARD_GV_BCTV specific functions. 280 */ 281 282#define BCTV_AUDIO_MAIN 0x10 /* main audio program */ 283#define BCTV_AUDIO_SUB 0x20 /* sub audio program */ 284#define BCTV_AUDIO_BOTH 0x30 /* main(L) + sub(R) program */ 285 286#define BCTV_GPIO_REG0 1 287#define BCTV_GPIO_REG1 3 288 289#define BCTV_GR0_AUDIO_MODE 3 290#define BCTV_GR0_AUDIO_MAIN 0 /* main program */ 291#define BCTV_GR0_AUDIO_SUB 3 /* sub program */ 292#define BCTV_GR0_AUDIO_BOTH 1 /* main(L) + sub(R) */ 293#define BCTV_GR0_AUDIO_MUTE 4 /* audio mute */ 294#define BCTV_GR0_AUDIO_MONO 8 /* force mono */ 295 296void 297set_bctv_audio( bktr_ptr_t bktr ) 298{ 299 int data; 300 301 switch (bktr->audio_mux_select) { 302 case 1: /* external */ 303 case 2: /* internal */ 304 bctv_gpio_write(bktr, BCTV_GPIO_REG1, 0); 305 break; 306 default: /* tuner */ 307 bctv_gpio_write(bktr, BCTV_GPIO_REG1, 1); 308 break; 309 } 310/* switch (bktr->audio_sap_select) { */ 311 switch (BCTV_AUDIO_BOTH) { 312 case BCTV_AUDIO_SUB: 313 data = BCTV_GR0_AUDIO_SUB; 314 break; 315 case BCTV_AUDIO_BOTH: 316 data = BCTV_GR0_AUDIO_BOTH; 317 break; 318 case BCTV_AUDIO_MAIN: 319 default: 320 data = BCTV_GR0_AUDIO_MAIN; 321 break; 322 } 323 if (bktr->audio_mute_state == TRUE) 324 data |= BCTV_GR0_AUDIO_MUTE; 325 326 bctv_gpio_write(bktr, BCTV_GPIO_REG0, data); 327 328 return; 329} 330 331/* gpio_data bit assignment */ 332#define BCTV_GPIO_ADDR_MASK 0x000300 333#define BCTV_GPIO_WE 0x000400 334#define BCTV_GPIO_OE 0x000800 335#define BCTV_GPIO_VAL_MASK 0x00f000 336 337#define BCTV_GPIO_PORT_MASK 3 338#define BCTV_GPIO_ADDR_SHIFT 8 339#define BCTV_GPIO_VAL_SHIFT 12 340 341/* gpio_out_en value for read/write */ 342#define BCTV_GPIO_OUT_RMASK 0x000f00 343#define BCTV_GPIO_OUT_WMASK 0x00ff00 344 345#define BCTV_BITS 100 346 347void 348bctv_gpio_write( bktr_ptr_t bktr, int port, int val ) 349{ 350 u_int data, outbits; 351 352 port &= BCTV_GPIO_PORT_MASK; 353 switch (port) { 354 case 1: 355 case 3: 356 data = ((val << BCTV_GPIO_VAL_SHIFT) & BCTV_GPIO_VAL_MASK) | 357 ((port << BCTV_GPIO_ADDR_SHIFT) & BCTV_GPIO_ADDR_MASK) | 358 BCTV_GPIO_WE | BCTV_GPIO_OE; 359 outbits = BCTV_GPIO_OUT_WMASK; 360 break; 361 default: 362 return; 363 } 364 OUTL(bktr, BKTR_GPIO_OUT_EN, 0); 365 OUTL(bktr, BKTR_GPIO_DATA, data); 366 OUTL(bktr, BKTR_GPIO_OUT_EN, outbits); 367 DELAY(BCTV_BITS); 368 OUTL(bktr, BKTR_GPIO_DATA, data & ~BCTV_GPIO_WE); 369 DELAY(BCTV_BITS); 370 OUTL(bktr, BKTR_GPIO_DATA, data); 371 DELAY(BCTV_BITS); 372 OUTL(bktr, BKTR_GPIO_DATA, ~0); 373 OUTL(bktr, BKTR_GPIO_OUT_EN, 0); 374} 375 376/* Not yet used 377int 378bctv_gpio_read( bktr_ptr_t bktr, int port ) 379{ 380 u_int data, outbits, ret; 381 382 port &= BCTV_GPIO_PORT_MASK; 383 switch (port) { 384 case 1: 385 case 3: 386 data = ((port << BCTV_GPIO_ADDR_SHIFT) & BCTV_GPIO_ADDR_MASK) | 387 BCTV_GPIO_WE | BCTV_GPIO_OE; 388 outbits = BCTV_GPIO_OUT_RMASK; 389 break; 390 default: 391 return( -1 ); 392 } 393 OUTL(bktr, BKTR_GPIO_OUT_EN, 0); 394 OUTL(bktr, BKTR_GPIO_DATA, data); 395 OUTL(bktr, BKTR_GPIO_OUT_EN, outbits); 396 DELAY(BCTV_BITS); 397 OUTL(bktr, BKTR_GPIO_DATA, data & ~BCTV_GPIO_OE); 398 DELAY(BCTV_BITS); 399 ret = INL(bktr, BKTR_GPIO_DATA); 400 DELAY(BCTV_BITS); 401 OUTL(bktr, BKTR_GPIO_DATA, data); 402 DELAY(BCTV_BITS); 403 OUTL(bktr, BKTR_GPIO_DATA, ~0); 404 OUTL(bktr, BKTR_GPIO_OUT_EN, 0); 405 return( (ret & BCTV_GPIO_VAL_MASK) >> BCTV_GPIO_VAL_SHIFT ); 406} 407*/ 408 409/* 410 * setup the MSP34xx Stereo Audio Chip 411 * This uses the Auto Configuration Option on MSP3410D and MSP3415D chips 412 * and DBX mode selection for MSP3430G chips. 413 * For MSP3400C support, the full programming sequence is required and is 414 * not yet supported. 415 */ 416 417/* Read the MSP version string */ 418void msp_read_id( bktr_ptr_t bktr ){ 419 int rev1=0, rev2=0; 420 rev1 = msp_dpl_read(bktr, bktr->msp_addr, 0x12, 0x001e); 421 rev2 = msp_dpl_read(bktr, bktr->msp_addr, 0x12, 0x001f); 422 423 snprintf(bktr->msp_version_string, sizeof bktr->msp_version_string, 424 "34%02d%c-%c%d", (rev2>>8)&0xff, (rev1&0xff)+'@', ((rev1>>8)&0xff)+'@', 425 rev2&0x1f); 426 427} 428 429 430/* Configure the MSP chip to Auto-detect the audio format. 431 * For the MSP3430G, we use fast autodetect mode 432 * For the MSP3410/3415 there are two schemes for this 433 * a) Fast autodetection - the chip is put into autodetect mode, and the function 434 * returns immediately. This works in most cases and is the Default Mode. 435 * b) Slow mode. The function sets the MSP3410/3415 chip, then waits for feedback from 436 * the chip and re-programs it if needed. 437 */ 438void msp_autodetect( bktr_ptr_t bktr ) { 439 int auto_detect, loops; 440 int stereo; 441 442 /* MSP3430G - countries with mono and DBX stereo */ 443 if (strncmp("3430G", bktr->msp_version_string, 5) == 0 || 444 strncmp("3435G", bktr->msp_version_string, 5) == 0) { 445 446 msp_dpl_write(bktr, bktr->msp_addr, 0x10, 0x0030,0x2003);/* Enable Auto format detection */ 447 msp_dpl_write(bktr, bktr->msp_addr, 0x10, 0x0020,0x0020);/* Standard Select Reg. = BTSC-Stereo*/ 448 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x000E,0x2403);/* darned if I know */ 449 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0008,0x0320);/* Source select = (St or A) */ 450 /* & Ch. Matrix = St */ 451 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0000,0x7300);/* Set volume to 0db gain */ 452 } 453 454 455 /* MSP3415D SPECIAL CASE Use the Tuner's Mono audio output for the MSP */ 456 /* (for Hauppauge 44xxx card with Tuner Type 0x2a) */ 457 else if ( ( (strncmp("3415D", bktr->msp_version_string, 5) == 0) 458 &&(bktr->msp_use_mono_source == 1) 459 ) 460 || (bktr->slow_msp_audio == 2) ){ 461 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0000, 0x7300); /* 0 db volume */ 462 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x000d, 0x1900); /* scart prescale */ 463 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0008, 0x0220); /* SCART | STEREO */ 464 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0013, 0x0100); /* DSP In = MONO IN */ 465 } 466 467 468 /* MSP3410/MSP3415 - countries with mono, stereo using 2 FM channels and NICAM */ 469 /* FAST sound scheme */ 470 else if (bktr->slow_msp_audio == 0) { 471 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0000,0x7300);/* Set volume to 0db gain */ 472 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0008,0x0000);/* Spkr Source = default(FM/AM) */ 473 msp_dpl_write(bktr, bktr->msp_addr, 0x10, 0x0020,0x0001);/* Enable Auto format detection */ 474 msp_dpl_write(bktr, bktr->msp_addr, 0x10, 0x0021,0x0001);/* Auto selection of NICAM/MONO mode */ 475 } 476 477 478 /* MSP3410/MSP3415 - European Countries where the fast MSP3410/3415 programming fails */ 479 /* SLOW sound scheme */ 480 else if ( bktr->slow_msp_audio == 1) { 481 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0000,0x7300);/* Set volume to 0db gain */ 482 msp_dpl_write(bktr, bktr->msp_addr, 0x10, 0x0020,0x0001);/* Enable Auto format detection */ 483 484 /* wait for 0.5s max for terrestrial sound autodetection */ 485 loops = 10; 486 do { 487 DELAY(100000); 488 auto_detect = msp_dpl_read(bktr, bktr->msp_addr, 0x10, 0x007e); 489 loops++; 490 } while (auto_detect > 0xff && loops < 50); 491 if (bootverbose)printf ("%s: Result of autodetect after %dms: %d\n", 492 bktr_name(bktr), loops*10, auto_detect); 493 494 /* Now set the audio baseband processing */ 495 switch (auto_detect) { 496 case 0: /* no TV sound standard detected */ 497 break; 498 case 2: /* M Dual FM */ 499 break; 500 case 3: /* B/G Dual FM; German stereo */ 501 /* Read the stereo detection value from DSP reg 0x0018 */ 502 DELAY(20000); 503 stereo = msp_dpl_read(bktr, bktr->msp_addr, 0x12, 0x0018); 504 if (bootverbose)printf ("%s: Stereo reg 0x18 a: %d\n", 505 bktr_name(bktr), stereo); 506 DELAY(20000); 507 stereo = msp_dpl_read(bktr, bktr->msp_addr, 0x12, 0x0018); 508 if (bootverbose)printf ("%s: Stereo reg 0x18 b: %d\n", 509 bktr_name(bktr), stereo); 510 DELAY(20000); 511 stereo = msp_dpl_read(bktr, bktr->msp_addr, 0x12, 0x0018); 512 if (bootverbose)printf ("%s: Stereo reg 0x18 c: %d\n", 513 bktr_name(bktr), stereo); 514 if (stereo > 0x0100 && stereo < 0x8000) { /* Seems to be stereo */ 515 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0008,0x0020);/* Loudspeaker set stereo*/ 516 /* 517 set spatial effect strength to 50% enlargement 518 set spatial effect mode b, stereo basewidth enlargement only 519 */ 520 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0005,0x3f28); 521 } else if (stereo > 0x8000) { /* bilingual mode */ 522 if (bootverbose) printf ("%s: Bilingual mode detected\n", 523 bktr_name(bktr)); 524 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0008,0x0000);/* Loudspeaker */ 525 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0005,0x0000);/* all spatial effects off */ 526 } else { /* must be mono */ 527 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0008,0x0030);/* Loudspeaker */ 528 /* 529 set spatial effect strength to 50% enlargement 530 set spatial effect mode a, stereo basewidth enlargement 531 and pseudo stereo effect with automatic high-pass filter 532 */ 533 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0005,0x3f08); 534 } 535#if 0 536 /* The reset value for Channel matrix mode is FM/AM and SOUNDA/LEFT */ 537 /* We would like STEREO instead val: 0x0020 */ 538 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0008,0x0020);/* Loudspeaker */ 539 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0009,0x0020);/* Headphone */ 540 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x000a,0x0020);/* SCART1 */ 541 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0041,0x0020);/* SCART2 */ 542 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x000b,0x0020);/* I2S */ 543 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x000c,0x0020);/* Quasi-Peak Detector Source */ 544 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x000e,0x0001); 545#endif 546 break; 547 case 8: /* B/G FM NICAM */ 548 msp_dpl_write(bktr, bktr->msp_addr, 0x10, 0x0021,0x0001);/* Auto selection of NICAM/MONO mode */ 549 break; 550 case 9: /* L_AM NICAM or D/K*/ 551 case 10: /* i-FM NICAM */ 552 break; 553 default: 554 if (bootverbose) printf ("%s: Unknown autodetection result value: %d\n", 555 bktr_name(bktr), auto_detect); 556 } 557 558 } 559 560 561 /* uncomment the following line to enable the MSP34xx 1KHz Tone Generator */ 562 /* turn your speaker volume down low before trying this */ 563 /* msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0014, 0x7f40); */ 564} 565 566/* Read the DPL version string */ 567void dpl_read_id( bktr_ptr_t bktr ){ 568 int rev1=0, rev2=0; 569 rev1 = msp_dpl_read(bktr, bktr->dpl_addr, 0x12, 0x001e); 570 rev2 = msp_dpl_read(bktr, bktr->dpl_addr, 0x12, 0x001f); 571 572 snprintf(bktr->dpl_version_string, sizeof bktr->dpl_version_string, 573 "34%02d%c-%c%d", ((rev2>>8)&0xff)-1, (rev1&0xff)+'@', 574 ((rev1>>8)&0xff)+'@', rev2&0x1f); 575} 576 577/* Configure the DPL chip to Auto-detect the audio format */ 578void dpl_autodetect( bktr_ptr_t bktr ) { 579 580 /* The following are empiric values tried from the DPL35xx data sheet */ 581 msp_dpl_write(bktr, bktr->dpl_addr, 0x12, 0x000c,0x0320); /* quasi peak detector source dolby 582 lr 0x03xx; quasi peak detector matrix 583 stereo 0xXX20 */ 584 msp_dpl_write(bktr, bktr->dpl_addr, 0x12, 0x0040,0x0060); /* Surround decoder mode; 585 ADAPTIVE/3D-PANORAMA, that means two 586 speakers and no center speaker, all 587 channels L/R/C/S mixed to L and R */ 588 msp_dpl_write(bktr, bktr->dpl_addr, 0x12, 0x0041,0x0620); /* surround source matrix;I2S2/STEREO*/ 589 msp_dpl_write(bktr, bktr->dpl_addr, 0x12, 0x0042,0x1F00); /* surround delay 31ms max */ 590 msp_dpl_write(bktr, bktr->dpl_addr, 0x12, 0x0043,0x0000); /* automatic surround input balance */ 591 msp_dpl_write(bktr, bktr->dpl_addr, 0x12, 0x0044,0x4000); /* surround spatial effect 50% 592 recommended*/ 593 msp_dpl_write(bktr, bktr->dpl_addr, 0x12, 0x0045,0x5400); /* surround panorama effect 66% 594 recommended with PANORAMA mode 595 in 0x0040 set to panorama */ 596} 597 598