bktr_audio.c revision 1.7
1 /* $NetBSD: bktr_audio.c,v 1.7 2000/10/28 14:31:57 wiz Exp $ */ 2 3 /* FreeBSD: src/sys/dev/bktr/bktr_audio.c,v 1.6 2000/10/15 14:18:06 phk Exp */ 4 /* 5 * This is part of the Driver for Video Capture Cards (Frame grabbers) 6 * and TV Tuner cards using the Brooktree Bt848, Bt848A, Bt849A, Bt878, Bt879 7 * chipset. 8 * Copyright Roger Hardiman and Amancio Hasty. 9 * 10 * bktr_audio : This deals with controlling the audio on TV cards, 11 * controlling the Audio Multiplexer (audio source selector). 12 * controlling any MSP34xx stereo audio decoders. 13 * controlling any DPL35xx dolby surroud sound audio decoders. 14 * initialising TDA98xx audio devices. 15 * 16 */ 17 18 /* 19 * 1. Redistributions of source code must retain the 20 * Copyright (c) 1997 Amancio Hasty, 1999 Roger Hardiman 21 * All rights reserved. 22 * 23 * Redistribution and use in source and binary forms, with or without 24 * modification, are permitted provided that the following conditions 25 * are met: 26 * 1. Redistributions of source code must retain the above copyright 27 * notice, this list of conditions and the following disclaimer. 28 * 2. Redistributions in binary form must reproduce the above copyright 29 * notice, this list of conditions and the following disclaimer in the 30 * documentation and/or other materials provided with the distribution. 31 * 3. All advertising materials mentioning features or use of this software 32 * must display the following acknowledgement: 33 * This product includes software developed by Amancio Hasty and 34 * Roger Hardiman 35 * 4. The name of the author may not be used to endorse or promote products 36 * derived from this software without specific prior written permission. 37 * 38 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 39 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 40 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 41 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 42 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 43 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 44 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 45 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 46 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 47 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 48 * POSSIBILITY OF SUCH DAMAGE. 49 */ 50 51 #include <sys/param.h> 52 #include <sys/systm.h> 53 #include <sys/kernel.h> 54 #include <sys/vnode.h> 55 56 #ifdef __FreeBSD__ 57 58 #if (__FreeBSD_version < 500000) 59 #include <machine/clock.h> /* for DELAY */ 60 #endif 61 62 #include <pci/pcivar.h> 63 64 #if (__FreeBSD_version >=300000) 65 #include <machine/bus_memio.h> /* for bus space */ 66 #include <machine/bus.h> 67 #include <sys/bus.h> 68 #endif 69 #endif 70 71 #ifdef __NetBSD__ 72 #include <sys/proc.h> 73 #include <dev/ic/bt8xx.h> /* NetBSD location of .h files */ 74 #include <dev/pci/bktr/bktr_reg.h> 75 #include <dev/pci/bktr/bktr_core.h> 76 #include <dev/pci/bktr/bktr_tuner.h> 77 #include <dev/pci/bktr/bktr_card.h> 78 #include <dev/pci/bktr/bktr_audio.h> 79 #else 80 #include <machine/ioctl_meteor.h> /* Traditional location of .h files */ 81 #include <machine/ioctl_bt848.h> /* extensions to ioctl_meteor.h */ 82 #include <dev/bktr/bktr_reg.h> 83 #include <dev/bktr/bktr_core.h> 84 #include <dev/bktr/bktr_tuner.h> 85 #include <dev/bktr/bktr_card.h> 86 #include <dev/bktr/bktr_audio.h> 87 #endif 88 89 /* 90 * Prototypes for the GV_BCTV specific functions. 91 */ 92 void set_bctv_audio( bktr_ptr_t bktr ); 93 void bctv_gpio_write( bktr_ptr_t bktr, int port, int val ); 94 /*int bctv_gpio_read( bktr_ptr_t bktr, int port );*/ /* Not used */ 95 96 97 98 /* 99 * init_audio_devices 100 * Reset any MSP34xx or TDA98xx audio devices. 101 */ 102 void init_audio_devices( bktr_ptr_t bktr ) { 103 104 /* enable stereo if appropriate on TDA audio chip */ 105 if ( bktr->card.dbx ) 106 init_BTSC( bktr ); 107 108 /* reset the MSP34xx stereo audio chip */ 109 if ( bktr->card.msp3400c ) 110 msp_dpl_reset( bktr, bktr->msp_addr ); 111 112 /* reset the DPL35xx dolby audio chip */ 113 if ( bktr->card.dpl3518a ) 114 msp_dpl_reset( bktr, bktr->dpl_addr ); 115 116 } 117 118 119 /* 120 * 121 */ 122 #define AUDIOMUX_DISCOVER_NOT 123 int 124 set_audio( bktr_ptr_t bktr, int cmd ) 125 { 126 u_long temp; 127 volatile u_char idx; 128 129 #if defined( AUDIOMUX_DISCOVER ) 130 if ( cmd >= 200 ) 131 cmd -= 200; 132 else 133 #endif /* AUDIOMUX_DISCOVER */ 134 135 /* check for existance of audio MUXes */ 136 if ( !bktr->card.audiomuxs[ 4 ] ) 137 return( -1 ); 138 139 switch (cmd) { 140 case AUDIO_TUNER: 141 #ifdef BKTR_REVERSEMUTE 142 bktr->audio_mux_select = 3; 143 #else 144 bktr->audio_mux_select = 0; 145 #endif 146 147 if (bktr->reverse_mute ) 148 bktr->audio_mux_select = 0; 149 else 150 bktr->audio_mux_select = 3; 151 152 break; 153 case AUDIO_EXTERN: 154 bktr->audio_mux_select = 1; 155 break; 156 case AUDIO_INTERN: 157 bktr->audio_mux_select = 2; 158 break; 159 case AUDIO_MUTE: 160 bktr->audio_mute_state = TRUE; /* set mute */ 161 break; 162 case AUDIO_UNMUTE: 163 bktr->audio_mute_state = FALSE; /* clear mute */ 164 break; 165 default: 166 printf("%s: audio cmd error %02x\n", bktr_name(bktr), 167 cmd); 168 return( -1 ); 169 } 170 171 172 /* Most cards have a simple audio multiplexer to select the 173 * audio source. The I/O_GV card has a more advanced multiplexer 174 * and requires special handling. 175 */ 176 if ( bktr->bt848_card == CARD_IO_GV ) { 177 set_bctv_audio( bktr ); 178 return( 0 ); 179 } 180 181 /* Proceed with the simpler audio multiplexer code for the majority 182 * of Bt848 cards. 183 */ 184 185 /* 186 * Leave the upper bits of the GPIO port alone in case they control 187 * something like the dbx or teletext chips. This doesn't guarantee 188 * success, but follows the rule of least astonishment. 189 */ 190 191 if ( bktr->audio_mute_state == TRUE ) { 192 #ifdef BKTR_REVERSEMUTE 193 idx = 0; 194 #else 195 idx = 3; 196 #endif 197 198 if (bktr->reverse_mute ) 199 idx = 3; 200 else 201 idx = 0; 202 203 } 204 else 205 idx = bktr->audio_mux_select; 206 207 temp = INL(bktr, BKTR_GPIO_DATA) & ~bktr->card.gpio_mux_bits; 208 #if defined( AUDIOMUX_DISCOVER ) 209 OUTL(bktr, BKTR_GPIO_DATA, temp | (cmd & 0xff)); 210 printf("%s: cmd: %d audio mux %x temp %x \n", bktr_name(bktr), 211 cmd, bktr->card.audiomuxs[ idx ], temp ); 212 #else 213 OUTL(bktr, BKTR_GPIO_DATA, temp | bktr->card.audiomuxs[ idx ]); 214 #endif /* AUDIOMUX_DISCOVER */ 215 216 return( 0 ); 217 } 218 219 220 /* 221 * 222 */ 223 void 224 temp_mute( bktr_ptr_t bktr, int flag ) 225 { 226 static int muteState = FALSE; 227 228 if ( flag == TRUE ) { 229 muteState = bktr->audio_mute_state; 230 set_audio( bktr, AUDIO_MUTE ); /* prevent 'click' */ 231 } 232 else { 233 tsleep( BKTR_SLEEP, PZERO, "tuning", hz/8 ); 234 if ( muteState == FALSE ) 235 set_audio( bktr, AUDIO_UNMUTE ); 236 } 237 } 238 239 /* address of BTSC/SAP decoder chip */ 240 #define TDA9850_WADDR 0xb6 241 #define TDA9850_RADDR 0xb7 242 243 244 /* registers in the TDA9850 BTSC/dbx chip */ 245 #define CON1ADDR 0x04 246 #define CON2ADDR 0x05 247 #define CON3ADDR 0x06 248 #define CON4ADDR 0x07 249 #define ALI1ADDR 0x08 250 #define ALI2ADDR 0x09 251 #define ALI3ADDR 0x0a 252 253 /* 254 * initialise the dbx chip 255 * taken from the Linux bttv driver TDA9850 initialisation code 256 */ 257 void 258 init_BTSC( bktr_ptr_t bktr ) 259 { 260 i2cWrite(bktr, TDA9850_WADDR, CON1ADDR, 0x08); /* noise threshold st */ 261 i2cWrite(bktr, TDA9850_WADDR, CON2ADDR, 0x08); /* noise threshold sap */ 262 i2cWrite(bktr, TDA9850_WADDR, CON3ADDR, 0x40); /* stereo mode */ 263 i2cWrite(bktr, TDA9850_WADDR, CON4ADDR, 0x07); /* 0 dB input gain? */ 264 i2cWrite(bktr, TDA9850_WADDR, ALI1ADDR, 0x10); /* wideband alignment? */ 265 i2cWrite(bktr, TDA9850_WADDR, ALI2ADDR, 0x10); /* spectral alignment? */ 266 i2cWrite(bktr, TDA9850_WADDR, ALI3ADDR, 0x03); 267 } 268 269 /* 270 * setup the dbx chip 271 * XXX FIXME: alot of work to be done here, this merely unmutes it. 272 */ 273 int 274 set_BTSC( bktr_ptr_t bktr, int control ) 275 { 276 return( i2cWrite( bktr, TDA9850_WADDR, CON3ADDR, control ) ); 277 } 278 279 /* 280 * CARD_GV_BCTV specific functions. 281 */ 282 283 #define BCTV_AUDIO_MAIN 0x10 /* main audio program */ 284 #define BCTV_AUDIO_SUB 0x20 /* sub audio program */ 285 #define BCTV_AUDIO_BOTH 0x30 /* main(L) + sub(R) program */ 286 287 #define BCTV_GPIO_REG0 1 288 #define BCTV_GPIO_REG1 3 289 290 #define BCTV_GR0_AUDIO_MODE 3 291 #define BCTV_GR0_AUDIO_MAIN 0 /* main program */ 292 #define BCTV_GR0_AUDIO_SUB 3 /* sub program */ 293 #define BCTV_GR0_AUDIO_BOTH 1 /* main(L) + sub(R) */ 294 #define BCTV_GR0_AUDIO_MUTE 4 /* audio mute */ 295 #define BCTV_GR0_AUDIO_MONO 8 /* force mono */ 296 297 void 298 set_bctv_audio( bktr_ptr_t bktr ) 299 { 300 int data; 301 302 switch (bktr->audio_mux_select) { 303 case 1: /* external */ 304 case 2: /* internal */ 305 bctv_gpio_write(bktr, BCTV_GPIO_REG1, 0); 306 break; 307 default: /* tuner */ 308 bctv_gpio_write(bktr, BCTV_GPIO_REG1, 1); 309 break; 310 } 311 /* switch (bktr->audio_sap_select) { */ 312 switch (BCTV_AUDIO_BOTH) { 313 case BCTV_AUDIO_SUB: 314 data = BCTV_GR0_AUDIO_SUB; 315 break; 316 case BCTV_AUDIO_BOTH: 317 data = BCTV_GR0_AUDIO_BOTH; 318 break; 319 case BCTV_AUDIO_MAIN: 320 default: 321 data = BCTV_GR0_AUDIO_MAIN; 322 break; 323 } 324 if (bktr->audio_mute_state == TRUE) 325 data |= BCTV_GR0_AUDIO_MUTE; 326 327 bctv_gpio_write(bktr, BCTV_GPIO_REG0, data); 328 329 return; 330 } 331 332 /* gpio_data bit assignment */ 333 #define BCTV_GPIO_ADDR_MASK 0x000300 334 #define BCTV_GPIO_WE 0x000400 335 #define BCTV_GPIO_OE 0x000800 336 #define BCTV_GPIO_VAL_MASK 0x00f000 337 338 #define BCTV_GPIO_PORT_MASK 3 339 #define BCTV_GPIO_ADDR_SHIFT 8 340 #define BCTV_GPIO_VAL_SHIFT 12 341 342 /* gpio_out_en value for read/write */ 343 #define BCTV_GPIO_OUT_RMASK 0x000f00 344 #define BCTV_GPIO_OUT_WMASK 0x00ff00 345 346 #define BCTV_BITS 100 347 348 void 349 bctv_gpio_write( bktr_ptr_t bktr, int port, int val ) 350 { 351 u_long data, outbits; 352 353 port &= BCTV_GPIO_PORT_MASK; 354 switch (port) { 355 case 1: 356 case 3: 357 data = ((val << BCTV_GPIO_VAL_SHIFT) & BCTV_GPIO_VAL_MASK) | 358 ((port << BCTV_GPIO_ADDR_SHIFT) & BCTV_GPIO_ADDR_MASK) | 359 BCTV_GPIO_WE | BCTV_GPIO_OE; 360 outbits = BCTV_GPIO_OUT_WMASK; 361 break; 362 default: 363 return; 364 } 365 OUTL(bktr, BKTR_GPIO_OUT_EN, 0); 366 OUTL(bktr, BKTR_GPIO_DATA, data); 367 OUTL(bktr, BKTR_GPIO_OUT_EN, outbits); 368 DELAY(BCTV_BITS); 369 OUTL(bktr, BKTR_GPIO_DATA, data & ~BCTV_GPIO_WE); 370 DELAY(BCTV_BITS); 371 OUTL(bktr, BKTR_GPIO_DATA, data); 372 DELAY(BCTV_BITS); 373 OUTL(bktr, BKTR_GPIO_DATA, ~0); 374 OUTL(bktr, BKTR_GPIO_OUT_EN, 0); 375 } 376 377 /* Not yet used 378 int 379 bctv_gpio_read( bktr_ptr_t bktr, int port ) 380 { 381 u_long data, outbits, ret; 382 383 port &= BCTV_GPIO_PORT_MASK; 384 switch (port) { 385 case 1: 386 case 3: 387 data = ((port << BCTV_GPIO_ADDR_SHIFT) & BCTV_GPIO_ADDR_MASK) | 388 BCTV_GPIO_WE | BCTV_GPIO_OE; 389 outbits = BCTV_GPIO_OUT_RMASK; 390 break; 391 default: 392 return( -1 ); 393 } 394 OUTL(bktr, BKTR_GPIO_OUT_EN, 0); 395 OUTL(bktr, BKTR_GPIO_DATA, data); 396 OUTL(bktr, BKTR_GPIO_OUT_EN, outbits); 397 DELAY(BCTV_BITS); 398 OUTL(bktr, BKTR_GPIO_DATA, data & ~BCTV_GPIO_OE); 399 DELAY(BCTV_BITS); 400 ret = INL(bktr, BKTR_GPIO_DATA); 401 DELAY(BCTV_BITS); 402 OUTL(bktr, BKTR_GPIO_DATA, data); 403 DELAY(BCTV_BITS); 404 OUTL(bktr, BKTR_GPIO_DATA, ~0); 405 OUTL(bktr, BKTR_GPIO_OUT_EN, 0); 406 return( (ret & BCTV_GPIO_VAL_MASK) >> BCTV_GPIO_VAL_SHIFT ); 407 } 408 */ 409 410 /* 411 * setup the MSP34xx Stereo Audio Chip 412 * This uses the Auto Configuration Option on MSP3410D and MSP3415D chips 413 * and DBX mode selection for MSP3430G chips. 414 * For MSP3400C support, the full programming sequence is required and is 415 * not yet supported. 416 */ 417 418 /* Read the MSP version string */ 419 void msp_read_id( bktr_ptr_t bktr ){ 420 int rev1=0, rev2=0; 421 rev1 = msp_dpl_read(bktr, bktr->msp_addr, 0x12, 0x001e); 422 rev2 = msp_dpl_read(bktr, bktr->msp_addr, 0x12, 0x001f); 423 424 sprintf(bktr->msp_version_string, "34%02d%c-%c%d", 425 (rev2>>8)&0xff, (rev1&0xff)+'@', ((rev1>>8)&0xff)+'@', 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 immediatly. 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 */ 438 void 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){ 444 445 msp_dpl_write(bktr, bktr->msp_addr, 0x10, 0x0030,0x2003);/* Enable Auto format detection */ 446 msp_dpl_write(bktr, bktr->msp_addr, 0x10, 0x0020,0x0020);/* Standard Select Reg. = BTSC-Stereo*/ 447 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x000E,0x2403);/* darned if I know */ 448 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0008,0x0320);/* Source select = (St or A) */ 449 /* & Ch. Matrix = St */ 450 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0000,0x7300);/* Set volume to 0db gain */ 451 } 452 453 454 /* MSP3410/MSP3415 - countries with mono, stereo using 2 FM channels and NICAM */ 455 /* FAST sound scheme */ 456 if ( (strncmp("3430G", bktr->msp_version_string, 5) != 0) 457 && (bktr->slow_msp_audio == 0) ){ 458 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0000,0x7300);/* Set volume to 0db gain */ 459 msp_dpl_write(bktr, bktr->msp_addr, 0x10, 0x0020,0x0001);/* Enable Auto format detection */ 460 msp_dpl_write(bktr, bktr->msp_addr, 0x10, 0x0021,0x0001);/* Auto selection of NICAM/MONO mode */ 461 } 462 463 464 /* MSP3410/MSP3415 - European Countries where the fast MSP3410/3415 programming fails */ 465 /* SLOW sound scheme */ 466 if ( (strncmp("3430G", bktr->msp_version_string, 5) != 0) 467 && (bktr->slow_msp_audio == 1) ){ 468 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0000,0x7300);/* Set volume to 0db gain */ 469 msp_dpl_write(bktr, bktr->msp_addr, 0x10, 0x0020,0x0001);/* Enable Auto format detection */ 470 471 /* wait for 0.5s max for terrestrial sound autodetection */ 472 loops = 10; 473 do { 474 DELAY(100000); 475 auto_detect = msp_dpl_read(bktr, bktr->msp_addr, 0x10, 0x007e); 476 loops++; 477 } while (auto_detect > 0xff && loops < 50); 478 if (bootverbose)printf ("%s: Result of autodetect after %dms: %d\n", 479 bktr_name(bktr), loops*10, auto_detect); 480 481 /* Now set the audio baseband processing */ 482 switch (auto_detect) { 483 case 0: /* no TV sound standard detected */ 484 break; 485 case 2: /* M Dual FM */ 486 break; 487 case 3: /* B/G Dual FM; German stereo */ 488 /* Read the stereo detection value from DSP reg 0x0018 */ 489 DELAY(20000); 490 stereo = msp_dpl_read(bktr, bktr->msp_addr, 0x12, 0x0018); 491 if (bootverbose)printf ("%s: Stereo reg 0x18 a: %d\n", 492 bktr_name(bktr), stereo); 493 DELAY(20000); 494 stereo = msp_dpl_read(bktr, bktr->msp_addr, 0x12, 0x0018); 495 if (bootverbose)printf ("%s: Stereo reg 0x18 b: %d\n", 496 bktr_name(bktr), stereo); 497 DELAY(20000); 498 stereo = msp_dpl_read(bktr, bktr->msp_addr, 0x12, 0x0018); 499 if (bootverbose)printf ("%s: Stereo reg 0x18 c: %d\n", 500 bktr_name(bktr), stereo); 501 if (stereo > 0x0100 && stereo < 0x8000) { /* Seems to be stereo */ 502 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0008,0x0020);/* Loudspeaker set stereo*/ 503 /* 504 set spatial effect strength to 50% enlargement 505 set spatial effect mode b, stereo basewidth enlargment only 506 */ 507 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0005,0x3f28); 508 } else if (stereo > 0x8000) { /* bilingual mode */ 509 if (bootverbose) printf ("%s: Bilingual mode detected\n", 510 bktr_name(bktr)); 511 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0008,0x0000);/* Loudspeaker */ 512 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0005,0x0000);/* all spatial effects off */ 513 } else { /* must be mono */ 514 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0008,0x0030);/* Loudspeaker */ 515 /* 516 set spatial effect strength to 50% enlargement 517 set spatial effect mode a, stereo basewidth enlargment 518 and pseudo stereo effect with automatic high-pass filter 519 */ 520 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0005,0x3f08); 521 } 522 #if 0 523 /* The reset value for Channel matrix mode is FM/AM and SOUNDA/LEFT */ 524 /* We would like STEREO instead val: 0x0020 */ 525 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0008,0x0020);/* Loudspeaker */ 526 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0009,0x0020);/* Headphone */ 527 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x000a,0x0020);/* SCART1 */ 528 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0041,0x0020);/* SCART2 */ 529 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x000b,0x0020);/* I2S */ 530 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x000c,0x0020);/* Quasi-Peak Detector Source */ 531 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x000e,0x0001); 532 #endif 533 break; 534 case 8: /* B/G FM NICAM */ 535 msp_dpl_write(bktr, bktr->msp_addr, 0x10, 0x0021,0x0001);/* Auto selection of NICAM/MONO mode */ 536 break; 537 case 9: /* L_AM NICAM or D/K*/ 538 case 10: /* i-FM NICAM */ 539 break; 540 default: 541 if (bootverbose) printf ("%s: Unknown autodetection result value: %d\n", 542 bktr_name(bktr), auto_detect); 543 } 544 545 } 546 547 548 /* uncomment the following line to enable the MSP34xx 1Khz Tone Generator */ 549 /* turn your speaker volume down low before trying this */ 550 /* msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0014, 0x7f40); */ 551 } 552 553 /* Read the DPL version string */ 554 void dpl_read_id( bktr_ptr_t bktr ){ 555 int rev1=0, rev2=0; 556 rev1 = msp_dpl_read(bktr, bktr->dpl_addr, 0x12, 0x001e); 557 rev2 = msp_dpl_read(bktr, bktr->dpl_addr, 0x12, 0x001f); 558 559 sprintf(bktr->dpl_version_string, "34%02d%c-%c%d", 560 ((rev2>>8)&0xff)-1, (rev1&0xff)+'@', ((rev1>>8)&0xff)+'@', rev2&0x1f); 561 } 562 563 /* Configure the DPL chip to Auto-detect the audio format */ 564 void dpl_autodetect( bktr_ptr_t bktr ) { 565 566 /* The following are empiric values tried from the DPL35xx data sheet */ 567 msp_dpl_write(bktr, bktr->dpl_addr, 0x12, 0x000c,0x0320); /* quasi peak detector source dolby 568 lr 0x03xx; quasi peak detector matrix 569 stereo 0xXX20 */ 570 msp_dpl_write(bktr, bktr->dpl_addr, 0x12, 0x0040,0x0060); /* Surround decoder mode; 571 ADAPTIVE/3D-PANORAMA, that means two 572 speakers and no center speaker, all 573 channels L/R/C/S mixed to L and R */ 574 msp_dpl_write(bktr, bktr->dpl_addr, 0x12, 0x0041,0x0620); /* surround source matrix;I2S2/STEREO*/ 575 msp_dpl_write(bktr, bktr->dpl_addr, 0x12, 0x0042,0x1F00); /* surround delay 31ms max */ 576 msp_dpl_write(bktr, bktr->dpl_addr, 0x12, 0x0043,0x0000); /* automatic surround input balance */ 577 msp_dpl_write(bktr, bktr->dpl_addr, 0x12, 0x0044,0x4000); /* surround spatial effect 50% 578 recommended*/ 579 msp_dpl_write(bktr, bktr->dpl_addr, 0x12, 0x0045,0x5400); /* surround panorama effect 66% 580 recommended with PANORAMA mode 581 in 0x0040 set to panorama */ 582 } 583 584
Indexes created Wed Oct 01 15:09:59 GMT 2025