bktr_audio.c revision 1.8
1 /* $NetBSD: bktr_audio.c,v 1.8 2000/12/30 16:52:36 wiz Exp $ */ 2 3 /* FreeBSD: src/sys/dev/bktr/bktr_audio.c,v 1.8 2000/10/31 13:09:56 roger 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; 206 207 208 temp = INL(bktr, BKTR_GPIO_DATA) & ~bktr->card.gpio_mux_bits; 209 #if defined( AUDIOMUX_DISCOVER ) 210 OUTL(bktr, BKTR_GPIO_DATA, temp | (cmd & 0xff)); 211 printf("%s: cmd: %d audio mux %x temp %x \n", bktr_name(bktr), 212 cmd, bktr->card.audiomuxs[ idx ], temp ); 213 #else 214 OUTL(bktr, BKTR_GPIO_DATA, temp | bktr->card.audiomuxs[ idx ]); 215 #endif /* AUDIOMUX_DISCOVER */ 216 217 218 219 /* Some new Hauppauge cards do not have an audio mux */ 220 /* Instead we use the MSP34xx chip to select TV audio, Line-In */ 221 /* FM Radio and Mute */ 222 /* Examples of this are the Hauppauge 44xxx MSP34xx models */ 223 /* It is ok to drive both the mux and the MSP34xx chip. */ 224 /* If there is no mux, the MSP does the switching of the audio source */ 225 /* If there is a mux, it does the switching of the audio source */ 226 227 if ((bktr->card.msp3400c) && (bktr->audio_mux_present == 0)) { 228 229 if (bktr->audio_mute_state == TRUE ) { 230 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0000, 0x0000); /* volume to MUTE */ 231 } else { 232 if(bktr->audio_mux_select == 0) { /* TV Tuner */ 233 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0000, 0x7300); /* 0 db volume */ 234 if (bktr->msp_source_selected != 0) msp_autodetect(bktr); /* setup TV audio mode */ 235 bktr->msp_source_selected = 0; 236 } 237 if(bktr->audio_mux_select == 1) { /* Line In */ 238 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0000, 0x7300); /* 0 db volume */ 239 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x000d, 0x1900); /* scart prescale */ 240 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0008, 0x0220); /* SCART | STEREO */ 241 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0013, 0x0000); /* DSP In = SC1_IN_L/R */ 242 bktr->msp_source_selected = 1; 243 } 244 245 if(bktr->audio_mux_select == 2) { /* FM Radio */ 246 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0000, 0x7300); /* 0 db volume */ 247 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x000d, 0x1900); /* scart prescale */ 248 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0008, 0x0220); /* SCART | STEREO */ 249 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0013, 0x0200); /* DSP In = SC2_IN_L/R */ 250 bktr->msp_source_selected = 2; 251 } 252 } 253 } 254 255 256 return( 0 ); 257 } 258 259 260 /* 261 * 262 */ 263 void 264 temp_mute( bktr_ptr_t bktr, int flag ) 265 { 266 static int muteState = FALSE; 267 268 if ( flag == TRUE ) { 269 muteState = bktr->audio_mute_state; 270 set_audio( bktr, AUDIO_MUTE ); /* prevent 'click' */ 271 } 272 else { 273 tsleep( BKTR_SLEEP, PZERO, "tuning", hz/8 ); 274 if ( muteState == FALSE ) 275 set_audio( bktr, AUDIO_UNMUTE ); 276 } 277 } 278 279 /* address of BTSC/SAP decoder chip */ 280 #define TDA9850_WADDR 0xb6 281 #define TDA9850_RADDR 0xb7 282 283 284 /* registers in the TDA9850 BTSC/dbx chip */ 285 #define CON1ADDR 0x04 286 #define CON2ADDR 0x05 287 #define CON3ADDR 0x06 288 #define CON4ADDR 0x07 289 #define ALI1ADDR 0x08 290 #define ALI2ADDR 0x09 291 #define ALI3ADDR 0x0a 292 293 /* 294 * initialise the dbx chip 295 * taken from the Linux bttv driver TDA9850 initialisation code 296 */ 297 void 298 init_BTSC( bktr_ptr_t bktr ) 299 { 300 i2cWrite(bktr, TDA9850_WADDR, CON1ADDR, 0x08); /* noise threshold st */ 301 i2cWrite(bktr, TDA9850_WADDR, CON2ADDR, 0x08); /* noise threshold sap */ 302 i2cWrite(bktr, TDA9850_WADDR, CON3ADDR, 0x40); /* stereo mode */ 303 i2cWrite(bktr, TDA9850_WADDR, CON4ADDR, 0x07); /* 0 dB input gain? */ 304 i2cWrite(bktr, TDA9850_WADDR, ALI1ADDR, 0x10); /* wideband alignment? */ 305 i2cWrite(bktr, TDA9850_WADDR, ALI2ADDR, 0x10); /* spectral alignment? */ 306 i2cWrite(bktr, TDA9850_WADDR, ALI3ADDR, 0x03); 307 } 308 309 /* 310 * setup the dbx chip 311 * XXX FIXME: alot of work to be done here, this merely unmutes it. 312 */ 313 int 314 set_BTSC( bktr_ptr_t bktr, int control ) 315 { 316 return( i2cWrite( bktr, TDA9850_WADDR, CON3ADDR, control ) ); 317 } 318 319 /* 320 * CARD_GV_BCTV specific functions. 321 */ 322 323 #define BCTV_AUDIO_MAIN 0x10 /* main audio program */ 324 #define BCTV_AUDIO_SUB 0x20 /* sub audio program */ 325 #define BCTV_AUDIO_BOTH 0x30 /* main(L) + sub(R) program */ 326 327 #define BCTV_GPIO_REG0 1 328 #define BCTV_GPIO_REG1 3 329 330 #define BCTV_GR0_AUDIO_MODE 3 331 #define BCTV_GR0_AUDIO_MAIN 0 /* main program */ 332 #define BCTV_GR0_AUDIO_SUB 3 /* sub program */ 333 #define BCTV_GR0_AUDIO_BOTH 1 /* main(L) + sub(R) */ 334 #define BCTV_GR0_AUDIO_MUTE 4 /* audio mute */ 335 #define BCTV_GR0_AUDIO_MONO 8 /* force mono */ 336 337 void 338 set_bctv_audio( bktr_ptr_t bktr ) 339 { 340 int data; 341 342 switch (bktr->audio_mux_select) { 343 case 1: /* external */ 344 case 2: /* internal */ 345 bctv_gpio_write(bktr, BCTV_GPIO_REG1, 0); 346 break; 347 default: /* tuner */ 348 bctv_gpio_write(bktr, BCTV_GPIO_REG1, 1); 349 break; 350 } 351 /* switch (bktr->audio_sap_select) { */ 352 switch (BCTV_AUDIO_BOTH) { 353 case BCTV_AUDIO_SUB: 354 data = BCTV_GR0_AUDIO_SUB; 355 break; 356 case BCTV_AUDIO_BOTH: 357 data = BCTV_GR0_AUDIO_BOTH; 358 break; 359 case BCTV_AUDIO_MAIN: 360 default: 361 data = BCTV_GR0_AUDIO_MAIN; 362 break; 363 } 364 if (bktr->audio_mute_state == TRUE) 365 data |= BCTV_GR0_AUDIO_MUTE; 366 367 bctv_gpio_write(bktr, BCTV_GPIO_REG0, data); 368 369 return; 370 } 371 372 /* gpio_data bit assignment */ 373 #define BCTV_GPIO_ADDR_MASK 0x000300 374 #define BCTV_GPIO_WE 0x000400 375 #define BCTV_GPIO_OE 0x000800 376 #define BCTV_GPIO_VAL_MASK 0x00f000 377 378 #define BCTV_GPIO_PORT_MASK 3 379 #define BCTV_GPIO_ADDR_SHIFT 8 380 #define BCTV_GPIO_VAL_SHIFT 12 381 382 /* gpio_out_en value for read/write */ 383 #define BCTV_GPIO_OUT_RMASK 0x000f00 384 #define BCTV_GPIO_OUT_WMASK 0x00ff00 385 386 #define BCTV_BITS 100 387 388 void 389 bctv_gpio_write( bktr_ptr_t bktr, int port, int val ) 390 { 391 u_long data, outbits; 392 393 port &= BCTV_GPIO_PORT_MASK; 394 switch (port) { 395 case 1: 396 case 3: 397 data = ((val << BCTV_GPIO_VAL_SHIFT) & BCTV_GPIO_VAL_MASK) | 398 ((port << BCTV_GPIO_ADDR_SHIFT) & BCTV_GPIO_ADDR_MASK) | 399 BCTV_GPIO_WE | BCTV_GPIO_OE; 400 outbits = BCTV_GPIO_OUT_WMASK; 401 break; 402 default: 403 return; 404 } 405 OUTL(bktr, BKTR_GPIO_OUT_EN, 0); 406 OUTL(bktr, BKTR_GPIO_DATA, data); 407 OUTL(bktr, BKTR_GPIO_OUT_EN, outbits); 408 DELAY(BCTV_BITS); 409 OUTL(bktr, BKTR_GPIO_DATA, data & ~BCTV_GPIO_WE); 410 DELAY(BCTV_BITS); 411 OUTL(bktr, BKTR_GPIO_DATA, data); 412 DELAY(BCTV_BITS); 413 OUTL(bktr, BKTR_GPIO_DATA, ~0); 414 OUTL(bktr, BKTR_GPIO_OUT_EN, 0); 415 } 416 417 /* Not yet used 418 int 419 bctv_gpio_read( bktr_ptr_t bktr, int port ) 420 { 421 u_long data, outbits, ret; 422 423 port &= BCTV_GPIO_PORT_MASK; 424 switch (port) { 425 case 1: 426 case 3: 427 data = ((port << BCTV_GPIO_ADDR_SHIFT) & BCTV_GPIO_ADDR_MASK) | 428 BCTV_GPIO_WE | BCTV_GPIO_OE; 429 outbits = BCTV_GPIO_OUT_RMASK; 430 break; 431 default: 432 return( -1 ); 433 } 434 OUTL(bktr, BKTR_GPIO_OUT_EN, 0); 435 OUTL(bktr, BKTR_GPIO_DATA, data); 436 OUTL(bktr, BKTR_GPIO_OUT_EN, outbits); 437 DELAY(BCTV_BITS); 438 OUTL(bktr, BKTR_GPIO_DATA, data & ~BCTV_GPIO_OE); 439 DELAY(BCTV_BITS); 440 ret = INL(bktr, BKTR_GPIO_DATA); 441 DELAY(BCTV_BITS); 442 OUTL(bktr, BKTR_GPIO_DATA, data); 443 DELAY(BCTV_BITS); 444 OUTL(bktr, BKTR_GPIO_DATA, ~0); 445 OUTL(bktr, BKTR_GPIO_OUT_EN, 0); 446 return( (ret & BCTV_GPIO_VAL_MASK) >> BCTV_GPIO_VAL_SHIFT ); 447 } 448 */ 449 450 /* 451 * setup the MSP34xx Stereo Audio Chip 452 * This uses the Auto Configuration Option on MSP3410D and MSP3415D chips 453 * and DBX mode selection for MSP3430G chips. 454 * For MSP3400C support, the full programming sequence is required and is 455 * not yet supported. 456 */ 457 458 /* Read the MSP version string */ 459 void msp_read_id( bktr_ptr_t bktr ){ 460 int rev1=0, rev2=0; 461 rev1 = msp_dpl_read(bktr, bktr->msp_addr, 0x12, 0x001e); 462 rev2 = msp_dpl_read(bktr, bktr->msp_addr, 0x12, 0x001f); 463 464 sprintf(bktr->msp_version_string, "34%02d%c-%c%d", 465 (rev2>>8)&0xff, (rev1&0xff)+'@', ((rev1>>8)&0xff)+'@', rev2&0x1f); 466 467 } 468 469 470 /* Configure the MSP chip to Auto-detect the audio format. 471 * For the MSP3430G, we use fast autodetect mode 472 * For the MSP3410/3415 there are two schemes for this 473 * a) Fast autodetection - the chip is put into autodetect mode, and the function 474 * returns immediatly. This works in most cases and is the Default Mode. 475 * b) Slow mode. The function sets the MSP3410/3415 chip, then waits for feedback from 476 * the chip and re-programs it if needed. 477 */ 478 void msp_autodetect( bktr_ptr_t bktr ) { 479 int auto_detect, loops; 480 int stereo; 481 482 /* MSP3430G - countries with mono and DBX stereo */ 483 if (strncmp("3430G", bktr->msp_version_string, 5) == 0){ 484 485 msp_dpl_write(bktr, bktr->msp_addr, 0x10, 0x0030,0x2003);/* Enable Auto format detection */ 486 msp_dpl_write(bktr, bktr->msp_addr, 0x10, 0x0020,0x0020);/* Standard Select Reg. = BTSC-Stereo*/ 487 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x000E,0x2403);/* darned if I know */ 488 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0008,0x0320);/* Source select = (St or A) */ 489 /* & Ch. Matrix = St */ 490 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0000,0x7300);/* Set volume to 0db gain */ 491 } 492 493 494 /* MSP3415D SPECIAL CASE Use the Tuner's Mono audio ouput for the MSP */ 495 /* (for Hauppauge 44xxx card with Tuner Type 0x2a) */ 496 else if ( ( (strncmp("3415D", bktr->msp_version_string, 5) == 0) 497 &&(bktr->msp_use_mono_source == 1) 498 ) 499 || (bktr->slow_msp_audio == 2) ){ 500 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0000, 0x7300); /* 0 db volume */ 501 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x000d, 0x1900); /* scart prescale */ 502 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0008, 0x0220); /* SCART | STEREO */ 503 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0013, 0x0100); /* DSP In = MONO IN */ 504 } 505 506 507 /* MSP3410/MSP3415 - countries with mono, stereo using 2 FM channels and NICAM */ 508 /* FAST sound scheme */ 509 else if (bktr->slow_msp_audio == 0) { 510 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0000,0x7300);/* Set volume to 0db gain */ 511 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0008,0x0000);/* Spkr Source = default(FM/AM) */ 512 msp_dpl_write(bktr, bktr->msp_addr, 0x10, 0x0020,0x0001);/* Enable Auto format detection */ 513 msp_dpl_write(bktr, bktr->msp_addr, 0x10, 0x0021,0x0001);/* Auto selection of NICAM/MONO mode */ 514 } 515 516 517 /* MSP3410/MSP3415 - European Countries where the fast MSP3410/3415 programming fails */ 518 /* SLOW sound scheme */ 519 else if ( bktr->slow_msp_audio == 1) { 520 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0000,0x7300);/* Set volume to 0db gain */ 521 msp_dpl_write(bktr, bktr->msp_addr, 0x10, 0x0020,0x0001);/* Enable Auto format detection */ 522 523 /* wait for 0.5s max for terrestrial sound autodetection */ 524 loops = 10; 525 do { 526 DELAY(100000); 527 auto_detect = msp_dpl_read(bktr, bktr->msp_addr, 0x10, 0x007e); 528 loops++; 529 } while (auto_detect > 0xff && loops < 50); 530 if (bootverbose)printf ("%s: Result of autodetect after %dms: %d\n", 531 bktr_name(bktr), loops*10, auto_detect); 532 533 /* Now set the audio baseband processing */ 534 switch (auto_detect) { 535 case 0: /* no TV sound standard detected */ 536 break; 537 case 2: /* M Dual FM */ 538 break; 539 case 3: /* B/G Dual FM; German stereo */ 540 /* Read the stereo detection value from DSP reg 0x0018 */ 541 DELAY(20000); 542 stereo = msp_dpl_read(bktr, bktr->msp_addr, 0x12, 0x0018); 543 if (bootverbose)printf ("%s: Stereo reg 0x18 a: %d\n", 544 bktr_name(bktr), stereo); 545 DELAY(20000); 546 stereo = msp_dpl_read(bktr, bktr->msp_addr, 0x12, 0x0018); 547 if (bootverbose)printf ("%s: Stereo reg 0x18 b: %d\n", 548 bktr_name(bktr), stereo); 549 DELAY(20000); 550 stereo = msp_dpl_read(bktr, bktr->msp_addr, 0x12, 0x0018); 551 if (bootverbose)printf ("%s: Stereo reg 0x18 c: %d\n", 552 bktr_name(bktr), stereo); 553 if (stereo > 0x0100 && stereo < 0x8000) { /* Seems to be stereo */ 554 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0008,0x0020);/* Loudspeaker set stereo*/ 555 /* 556 set spatial effect strength to 50% enlargement 557 set spatial effect mode b, stereo basewidth enlargment only 558 */ 559 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0005,0x3f28); 560 } else if (stereo > 0x8000) { /* bilingual mode */ 561 if (bootverbose) printf ("%s: Bilingual mode detected\n", 562 bktr_name(bktr)); 563 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0008,0x0000);/* Loudspeaker */ 564 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0005,0x0000);/* all spatial effects off */ 565 } else { /* must be mono */ 566 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0008,0x0030);/* Loudspeaker */ 567 /* 568 set spatial effect strength to 50% enlargement 569 set spatial effect mode a, stereo basewidth enlargment 570 and pseudo stereo effect with automatic high-pass filter 571 */ 572 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0005,0x3f08); 573 } 574 #if 0 575 /* The reset value for Channel matrix mode is FM/AM and SOUNDA/LEFT */ 576 /* We would like STEREO instead val: 0x0020 */ 577 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0008,0x0020);/* Loudspeaker */ 578 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0009,0x0020);/* Headphone */ 579 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x000a,0x0020);/* SCART1 */ 580 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0041,0x0020);/* SCART2 */ 581 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x000b,0x0020);/* I2S */ 582 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x000c,0x0020);/* Quasi-Peak Detector Source */ 583 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x000e,0x0001); 584 #endif 585 break; 586 case 8: /* B/G FM NICAM */ 587 msp_dpl_write(bktr, bktr->msp_addr, 0x10, 0x0021,0x0001);/* Auto selection of NICAM/MONO mode */ 588 break; 589 case 9: /* L_AM NICAM or D/K*/ 590 case 10: /* i-FM NICAM */ 591 break; 592 default: 593 if (bootverbose) printf ("%s: Unknown autodetection result value: %d\n", 594 bktr_name(bktr), auto_detect); 595 } 596 597 } 598 599 600 /* uncomment the following line to enable the MSP34xx 1Khz Tone Generator */ 601 /* turn your speaker volume down low before trying this */ 602 /* msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0014, 0x7f40); */ 603 } 604 605 /* Read the DPL version string */ 606 void dpl_read_id( bktr_ptr_t bktr ){ 607 int rev1=0, rev2=0; 608 rev1 = msp_dpl_read(bktr, bktr->dpl_addr, 0x12, 0x001e); 609 rev2 = msp_dpl_read(bktr, bktr->dpl_addr, 0x12, 0x001f); 610 611 sprintf(bktr->dpl_version_string, "34%02d%c-%c%d", 612 ((rev2>>8)&0xff)-1, (rev1&0xff)+'@', ((rev1>>8)&0xff)+'@', rev2&0x1f); 613 } 614 615 /* Configure the DPL chip to Auto-detect the audio format */ 616 void dpl_autodetect( bktr_ptr_t bktr ) { 617 618 /* The following are empiric values tried from the DPL35xx data sheet */ 619 msp_dpl_write(bktr, bktr->dpl_addr, 0x12, 0x000c,0x0320); /* quasi peak detector source dolby 620 lr 0x03xx; quasi peak detector matrix 621 stereo 0xXX20 */ 622 msp_dpl_write(bktr, bktr->dpl_addr, 0x12, 0x0040,0x0060); /* Surround decoder mode; 623 ADAPTIVE/3D-PANORAMA, that means two 624 speakers and no center speaker, all 625 channels L/R/C/S mixed to L and R */ 626 msp_dpl_write(bktr, bktr->dpl_addr, 0x12, 0x0041,0x0620); /* surround source matrix;I2S2/STEREO*/ 627 msp_dpl_write(bktr, bktr->dpl_addr, 0x12, 0x0042,0x1F00); /* surround delay 31ms max */ 628 msp_dpl_write(bktr, bktr->dpl_addr, 0x12, 0x0043,0x0000); /* automatic surround input balance */ 629 msp_dpl_write(bktr, bktr->dpl_addr, 0x12, 0x0044,0x4000); /* surround spatial effect 50% 630 recommended*/ 631 msp_dpl_write(bktr, bktr->dpl_addr, 0x12, 0x0045,0x5400); /* surround panorama effect 66% 632 recommended with PANORAMA mode 633 in 0x0040 set to panorama */ 634 } 635 636
Indexes created Wed Oct 01 19:09:53 GMT 2025