1 /* $FreeBSD: src/sys/dev/bktr/bktr_audio.c,v 1.2.2.5 2003/02/08 02:04:57 orion Exp $ */ 2 /* $DragonFly: src/sys/dev/video/bktr/bktr_audio.c,v 1.5 2004/02/13 01:45:15 joerg 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 surroud 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 #if defined(__DragonFly__) || defined(__FreeBSD__) 56 57 #if defined(__DragonFly__) || (__FreeBSD_version < 500000) 58 #include <machine/clock.h> /* for DELAY */ 59 #endif 60 61 #include <bus/pci/pcivar.h> 62 63 #if defined(__DragonFly__) || (__FreeBSD_version >=300000) 64 #include <machine/bus_memio.h> /* for bus space */ 65 #include <machine/bus.h> 66 #include <sys/bus.h> 67 #endif 68 #endif 69 70 #ifdef __NetBSD__ 71 #include <sys/proc.h> 72 #include <dev/ic/bt8xx.h> /* NetBSD location of .h files */ 73 #include <dev/pci/bktr/bktr_reg.h> 74 #include <dev/pci/bktr/bktr_core.h> 75 #include <dev/pci/bktr/bktr_tuner.h> 76 #include <dev/pci/bktr/bktr_card.h> 77 #include <dev/pci/bktr/bktr_audio.h> 78 #else 79 #include <machine/ioctl_meteor.h> /* Traditional location of .h files */ 80 #include <machine/ioctl_bt848.h> /* extensions to ioctl_meteor.h */ 81 #include "bktr_reg.h" 82 #include "bktr_core.h" 83 #include "bktr_tuner.h" 84 #include "bktr_card.h" 85 #include "bktr_audio.h" 86 #endif 87 88 /* 89 * Prototypes for the GV_BCTV2 specific functions. 90 */ 91 void set_bctv2_audio( bktr_ptr_t bktr ); 92 void bctv2_gpio_write( bktr_ptr_t bktr, int port, int val ); 93 /*int bctv2_gpio_read( bktr_ptr_t bktr, int port );*/ /* Not used */ 94 95 /* 96 * init_audio_devices 97 * Reset any MSP34xx or TDA98xx audio devices. 98 */ 99 void init_audio_devices( bktr_ptr_t bktr ) { 100 101 /* enable stereo if appropriate on TDA audio chip */ 102 if ( bktr->card.dbx ) 103 init_BTSC( bktr ); 104 105 /* reset the MSP34xx stereo audio chip */ 106 if ( bktr->card.msp3400c ) 107 msp_dpl_reset( bktr, bktr->msp_addr ); 108 109 /* reset the DPL35xx dolby audio chip */ 110 if ( bktr->card.dpl3518a ) 111 msp_dpl_reset( bktr, bktr->dpl_addr ); 112 113 } 114 115 116 /* 117 * 118 */ 119 #define AUDIOMUX_DISCOVER_NOT 120 int 121 set_audio( bktr_ptr_t bktr, int cmd ) 122 { 123 u_long temp; 124 volatile u_char idx; 125 126 #if defined( AUDIOMUX_DISCOVER ) 127 if ( cmd >= 200 ) 128 cmd -= 200; 129 else 130 #endif /* AUDIOMUX_DISCOVER */ 131 132 /* check for existance of audio MUXes */ 133 if ( !bktr->card.audiomuxs[ 4 ] ) 134 return( -1 ); 135 136 switch (cmd) { 137 case AUDIO_TUNER: 138 #ifdef BKTR_REVERSEMUTE 139 bktr->audio_mux_select = 3; 140 #else 141 bktr->audio_mux_select = 0; 142 #endif 143 144 if (bktr->reverse_mute ) 145 bktr->audio_mux_select = 0; 146 else 147 bktr->audio_mux_select = 3; 148 149 break; 150 case AUDIO_EXTERN: 151 bktr->audio_mux_select = 1; 152 break; 153 case AUDIO_INTERN: 154 bktr->audio_mux_select = 2; 155 break; 156 case AUDIO_MUTE: 157 bktr->audio_mute_state = TRUE; /* set mute */ 158 break; 159 case AUDIO_UNMUTE: 160 bktr->audio_mute_state = FALSE; /* clear mute */ 161 break; 162 default: 163 printf("%s: audio cmd error %02x\n", bktr_name(bktr), 164 cmd); 165 return( -1 ); 166 } 167 168 169 /* Most cards have a simple audio multiplexer to select the 170 * audio source. The I/O_GV card has a more advanced multiplexer 171 * and requires special handling. 172 */ 173 if ( bktr->bt848_card == CARD_IO_BCTV2 ) { 174 set_bctv2_audio( bktr ); 175 return( 0 ); 176 } 177 178 /* Proceed with the simpler audio multiplexer code for the majority 179 * of Bt848 cards. 180 */ 181 182 /* 183 * Leave the upper bits of the GPIO port alone in case they control 184 * something like the dbx or teletext chips. This doesn't guarantee 185 * success, but follows the rule of least astonishment. 186 */ 187 188 if ( bktr->audio_mute_state == TRUE ) { 189 #ifdef BKTR_REVERSEMUTE 190 idx = 0; 191 #else 192 idx = 3; 193 #endif 194 195 if (bktr->reverse_mute ) 196 idx = 3; 197 else 198 idx = 0; 199 200 } 201 else 202 idx = bktr->audio_mux_select; 203 204 205 temp = INL(bktr, BKTR_GPIO_DATA) & ~bktr->card.gpio_mux_bits; 206 #if defined( AUDIOMUX_DISCOVER ) 207 OUTL(bktr, BKTR_GPIO_DATA, temp | (cmd & 0xff)); 208 printf("%s: cmd: %d audio mux %x temp %x \n", bktr_name(bktr), 209 cmd, bktr->card.audiomuxs[ idx ], temp ); 210 #else 211 OUTL(bktr, BKTR_GPIO_DATA, temp | bktr->card.audiomuxs[ idx ]); 212 #endif /* AUDIOMUX_DISCOVER */ 213 214 215 216 /* Some new Hauppauge cards do not have an audio mux */ 217 /* Instead we use the MSP34xx chip to select TV audio, Line-In */ 218 /* FM Radio and Mute */ 219 /* Examples of this are the Hauppauge 44xxx MSP34xx models */ 220 /* It is ok to drive both the mux and the MSP34xx chip. */ 221 /* If there is no mux, the MSP does the switching of the audio source */ 222 /* If there is a mux, it does the switching of the audio source */ 223 224 if ((bktr->card.msp3400c) && (bktr->audio_mux_present == 0)) { 225 226 if (bktr->audio_mute_state == TRUE ) { 227 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0000, 0x0000); /* volume to MUTE */ 228 } else { 229 if(bktr->audio_mux_select == 0) { /* TV Tuner */ 230 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0000, 0x7300); /* 0 db volume */ 231 if (bktr->msp_source_selected != 0) msp_autodetect(bktr); /* setup TV audio mode */ 232 bktr->msp_source_selected = 0; 233 } 234 if(bktr->audio_mux_select == 1) { /* Line In */ 235 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0000, 0x7300); /* 0 db volume */ 236 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x000d, 0x1900); /* scart prescale */ 237 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0008, 0x0220); /* SCART | STEREO */ 238 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0013, 0x0000); /* DSP In = SC1_IN_L/R */ 239 bktr->msp_source_selected = 1; 240 } 241 242 if(bktr->audio_mux_select == 2) { /* FM Radio */ 243 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0000, 0x7300); /* 0 db volume */ 244 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x000d, 0x1900); /* scart prescale */ 245 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0008, 0x0220); /* SCART | STEREO */ 246 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0013, 0x0200); /* DSP In = SC2_IN_L/R */ 247 bktr->msp_source_selected = 2; 248 } 249 } 250 } 251 252 253 return( 0 ); 254 } 255 256 257 /* 258 * 259 */ 260 void 261 temp_mute( bktr_ptr_t bktr, int flag ) 262 { 263 static int muteState = FALSE; 264 265 if ( flag == TRUE ) { 266 muteState = bktr->audio_mute_state; 267 set_audio( bktr, AUDIO_MUTE ); /* prevent 'click' */ 268 } 269 else { 270 tsleep( BKTR_SLEEP, 0, "tuning", hz/8 ); 271 if ( muteState == FALSE ) 272 set_audio( bktr, AUDIO_UNMUTE ); 273 } 274 } 275 276 /* address of BTSC/SAP decoder chip */ 277 #define TDA9850_WADDR 0xb6 278 #define TDA9850_RADDR 0xb7 279 280 281 /* registers in the TDA9850 BTSC/dbx chip */ 282 #define CON1ADDR 0x04 283 #define CON2ADDR 0x05 284 #define CON3ADDR 0x06 285 #define CON4ADDR 0x07 286 #define ALI1ADDR 0x08 287 #define ALI2ADDR 0x09 288 #define ALI3ADDR 0x0a 289 290 /* 291 * initialise the dbx chip 292 * taken from the Linux bttv driver TDA9850 initialisation code 293 */ 294 void 295 init_BTSC( bktr_ptr_t bktr ) 296 { 297 i2cWrite(bktr, TDA9850_WADDR, CON1ADDR, 0x08); /* noise threshold st */ 298 i2cWrite(bktr, TDA9850_WADDR, CON2ADDR, 0x08); /* noise threshold sap */ 299 i2cWrite(bktr, TDA9850_WADDR, CON3ADDR, 0x40); /* stereo mode */ 300 i2cWrite(bktr, TDA9850_WADDR, CON4ADDR, 0x07); /* 0 dB input gain? */ 301 i2cWrite(bktr, TDA9850_WADDR, ALI1ADDR, 0x10); /* wideband alignment? */ 302 i2cWrite(bktr, TDA9850_WADDR, ALI2ADDR, 0x10); /* spectral alignment? */ 303 i2cWrite(bktr, TDA9850_WADDR, ALI3ADDR, 0x03); 304 } 305 306 /* 307 * setup the dbx chip 308 * XXX FIXME: alot of work to be done here, this merely unmutes it. 309 */ 310 int 311 set_BTSC( bktr_ptr_t bktr, int control ) 312 { 313 return( i2cWrite( bktr, TDA9850_WADDR, CON3ADDR, control ) ); 314 } 315 316 /* 317 * CARD_GV_BCTV2 specific functions. 318 */ 319 320 #define BCTV2_AUDIO_MAIN 0x10 /* main audio program */ 321 #define BCTV2_AUDIO_SUB 0x20 /* sub audio program */ 322 #define BCTV2_AUDIO_BOTH 0x30 /* main(L) + sub(R) program */ 323 324 #define BCTV2_GPIO_REG0 1 325 #define BCTV2_GPIO_REG1 3 326 327 #define BCTV2_GR0_AUDIO_MODE 3 328 #define BCTV2_GR0_AUDIO_MAIN 0 /* main program */ 329 #define BCTV2_GR0_AUDIO_SUB 3 /* sub program */ 330 #define BCTV2_GR0_AUDIO_BOTH 1 /* main(L) + sub(R) */ 331 #define BCTV2_GR0_AUDIO_MUTE 4 /* audio mute */ 332 #define BCTV2_GR0_AUDIO_MONO 8 /* force mono */ 333 334 void 335 set_bctv2_audio( bktr_ptr_t bktr ) 336 { 337 int data; 338 339 switch (bktr->audio_mux_select) { 340 case 1: /* external */ 341 case 2: /* internal */ 342 bctv2_gpio_write(bktr, BCTV2_GPIO_REG1, 0); 343 break; 344 default: /* tuner */ 345 bctv2_gpio_write(bktr, BCTV2_GPIO_REG1, 1); 346 break; 347 } 348 /* switch (bktr->audio_sap_select) { */ 349 switch (BCTV2_AUDIO_BOTH) { 350 case BCTV2_AUDIO_SUB: 351 data = BCTV2_GR0_AUDIO_SUB; 352 break; 353 case BCTV2_AUDIO_BOTH: 354 data = BCTV2_GR0_AUDIO_BOTH; 355 break; 356 case BCTV2_AUDIO_MAIN: 357 default: 358 data = BCTV2_GR0_AUDIO_MAIN; 359 break; 360 } 361 if (bktr->audio_mute_state == TRUE) 362 data |= BCTV2_GR0_AUDIO_MUTE; 363 364 bctv2_gpio_write(bktr, BCTV2_GPIO_REG0, data); 365 366 return; 367 } 368 369 /* gpio_data bit assignment */ 370 #define BCTV2_GPIO_ADDR_MASK 0x000300 371 #define BCTV2_GPIO_WE 0x000400 372 #define BCTV2_GPIO_OE 0x000800 373 #define BCTV2_GPIO_VAL_MASK 0x00f000 374 375 #define BCTV2_GPIO_PORT_MASK 3 376 #define BCTV2_GPIO_ADDR_SHIFT 8 377 #define BCTV2_GPIO_VAL_SHIFT 12 378 379 /* gpio_out_en value for read/write */ 380 #define BCTV2_GPIO_OUT_RMASK 0x000f00 381 #define BCTV2_GPIO_OUT_WMASK 0x00ff00 382 383 #define BCTV2_BITS 100 384 385 void 386 bctv2_gpio_write( bktr_ptr_t bktr, int port, int val ) 387 { 388 u_long data, outbits; 389 390 port &= BCTV2_GPIO_PORT_MASK; 391 switch (port) { 392 case 1: 393 case 3: 394 data = ((val << BCTV2_GPIO_VAL_SHIFT) & BCTV2_GPIO_VAL_MASK) | 395 ((port << BCTV2_GPIO_ADDR_SHIFT) & BCTV2_GPIO_ADDR_MASK) | 396 BCTV2_GPIO_WE | BCTV2_GPIO_OE; 397 outbits = BCTV2_GPIO_OUT_WMASK; 398 break; 399 default: 400 return; 401 } 402 OUTL(bktr, BKTR_GPIO_OUT_EN, 0); 403 OUTL(bktr, BKTR_GPIO_DATA, data); 404 OUTL(bktr, BKTR_GPIO_OUT_EN, outbits); 405 DELAY(BCTV2_BITS); 406 OUTL(bktr, BKTR_GPIO_DATA, data & ~BCTV2_GPIO_WE); 407 DELAY(BCTV2_BITS); 408 OUTL(bktr, BKTR_GPIO_DATA, data); 409 DELAY(BCTV2_BITS); 410 OUTL(bktr, BKTR_GPIO_DATA, ~0); 411 OUTL(bktr, BKTR_GPIO_OUT_EN, 0); 412 } 413 414 /* Not yet used 415 int 416 bctv2_gpio_read( bktr_ptr_t bktr, int port ) 417 { 418 u_long data, outbits, ret; 419 420 port &= BCTV2_GPIO_PORT_MASK; 421 switch (port) { 422 case 1: 423 case 3: 424 data = ((port << BCTV2_GPIO_ADDR_SHIFT) & BCTV2_GPIO_ADDR_MASK) | 425 BCTV2_GPIO_WE | BCTV2_GPIO_OE; 426 outbits = BCTV2_GPIO_OUT_RMASK; 427 break; 428 default: 429 return( -1 ); 430 } 431 OUTL(bktr, BKTR_GPIO_OUT_EN, 0); 432 OUTL(bktr, BKTR_GPIO_DATA, data); 433 OUTL(bktr, BKTR_GPIO_OUT_EN, outbits); 434 DELAY(BCTV2_BITS); 435 OUTL(bktr, BKTR_GPIO_DATA, data & ~BCTV2_GPIO_OE); 436 DELAY(BCTV2_BITS); 437 ret = INL(bktr, BKTR_GPIO_DATA); 438 DELAY(BCTV2_BITS); 439 OUTL(bktr, BKTR_GPIO_DATA, data); 440 DELAY(BCTV2_BITS); 441 OUTL(bktr, BKTR_GPIO_DATA, ~0); 442 OUTL(bktr, BKTR_GPIO_OUT_EN, 0); 443 return( (ret & BCTV2_GPIO_VAL_MASK) >> BCTV2_GPIO_VAL_SHIFT ); 444 } 445 */ 446 447 /* 448 * setup the MSP34xx Stereo Audio Chip 449 * This uses the Auto Configuration Option on MSP3410D and MSP3415D chips 450 * and DBX mode selection for MSP3430G chips. 451 * For MSP3400C support, the full programming sequence is required and is 452 * not yet supported. 453 */ 454 455 /* Read the MSP version string */ 456 void msp_read_id( bktr_ptr_t bktr ){ 457 int rev1=0, rev2=0; 458 rev1 = msp_dpl_read(bktr, bktr->msp_addr, 0x12, 0x001e); 459 rev2 = msp_dpl_read(bktr, bktr->msp_addr, 0x12, 0x001f); 460 461 sprintf(bktr->msp_version_string, "34%02d%c-%c%d", 462 (rev2>>8)&0xff, (rev1&0xff)+'@', ((rev1>>8)&0xff)+'@', rev2&0x1f); 463 464 } 465 466 467 /* Configure the MSP chip to Auto-detect the audio format. 468 * For the MSP3430G, we use fast autodetect mode 469 * For the MSP3410/3415 there are two schemes for this 470 * a) Fast autodetection - the chip is put into autodetect mode, and the function 471 * returns immediatly. This works in most cases and is the Default Mode. 472 * b) Slow mode. The function sets the MSP3410/3415 chip, then waits for feedback from 473 * the chip and re-programs it if needed. 474 */ 475 void msp_autodetect( bktr_ptr_t bktr ) { 476 int auto_detect, loops; 477 int stereo; 478 479 /* MSP3430G - countries with mono and DBX stereo */ 480 if (strncmp("3430G", bktr->msp_version_string, 5) == 0){ 481 482 msp_dpl_write(bktr, bktr->msp_addr, 0x10, 0x0030,0x2003);/* Enable Auto format detection */ 483 msp_dpl_write(bktr, bktr->msp_addr, 0x10, 0x0020,0x0020);/* Standard Select Reg. = BTSC-Stereo*/ 484 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x000E,0x2403);/* darned if I know */ 485 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0008,0x0320);/* Source select = (St or A) */ 486 /* & Ch. Matrix = St */ 487 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0000,0x7300);/* Set volume to 0db gain */ 488 } 489 490 491 /* MSP3415D SPECIAL CASE Use the Tuner's Mono audio ouput for the MSP */ 492 /* (for Hauppauge 44xxx card with Tuner Type 0x2a) */ 493 else if ( ( (strncmp("3415D", bktr->msp_version_string, 5) == 0) 494 &&(bktr->msp_use_mono_source == 1) 495 ) 496 || (bktr->slow_msp_audio == 2) ){ 497 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0000, 0x7300); /* 0 db volume */ 498 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x000d, 0x1900); /* scart prescale */ 499 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0008, 0x0220); /* SCART | STEREO */ 500 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0013, 0x0100); /* DSP In = MONO IN */ 501 } 502 503 504 /* MSP3410/MSP3415 - countries with mono, stereo using 2 FM channels and NICAM */ 505 /* FAST sound scheme */ 506 else if (bktr->slow_msp_audio == 0) { 507 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0000,0x7300);/* Set volume to 0db gain */ 508 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0008,0x0000);/* Spkr Source = default(FM/AM) */ 509 msp_dpl_write(bktr, bktr->msp_addr, 0x10, 0x0020,0x0001);/* Enable Auto format detection */ 510 msp_dpl_write(bktr, bktr->msp_addr, 0x10, 0x0021,0x0001);/* Auto selection of NICAM/MONO mode */ 511 } 512 513 514 /* MSP3410/MSP3415 - European Countries where the fast MSP3410/3415 programming fails */ 515 /* SLOW sound scheme */ 516 else if ( bktr->slow_msp_audio == 1) { 517 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0000,0x7300);/* Set volume to 0db gain */ 518 msp_dpl_write(bktr, bktr->msp_addr, 0x10, 0x0020,0x0001);/* Enable Auto format detection */ 519 520 /* wait for 0.5s max for terrestrial sound autodetection */ 521 loops = 10; 522 do { 523 DELAY(100000); 524 auto_detect = msp_dpl_read(bktr, bktr->msp_addr, 0x10, 0x007e); 525 loops++; 526 } while (auto_detect > 0xff && loops < 50); 527 if (bootverbose)printf ("%s: Result of autodetect after %dms: %d\n", 528 bktr_name(bktr), loops*10, auto_detect); 529 530 /* Now set the audio baseband processing */ 531 switch (auto_detect) { 532 case 0: /* no TV sound standard detected */ 533 break; 534 case 2: /* M Dual FM */ 535 break; 536 case 3: /* B/G Dual FM; German stereo */ 537 /* Read the stereo detection value from DSP reg 0x0018 */ 538 DELAY(20000); 539 stereo = msp_dpl_read(bktr, bktr->msp_addr, 0x12, 0x0018); 540 if (bootverbose)printf ("%s: Stereo reg 0x18 a: %d\n", 541 bktr_name(bktr), stereo); 542 DELAY(20000); 543 stereo = msp_dpl_read(bktr, bktr->msp_addr, 0x12, 0x0018); 544 if (bootverbose)printf ("%s: Stereo reg 0x18 b: %d\n", 545 bktr_name(bktr), stereo); 546 DELAY(20000); 547 stereo = msp_dpl_read(bktr, bktr->msp_addr, 0x12, 0x0018); 548 if (bootverbose)printf ("%s: Stereo reg 0x18 c: %d\n", 549 bktr_name(bktr), stereo); 550 if (stereo > 0x0100 && stereo < 0x8000) { /* Seems to be stereo */ 551 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0008,0x0020);/* Loudspeaker set stereo*/ 552 /* 553 set spatial effect strength to 50% enlargement 554 set spatial effect mode b, stereo basewidth enlargment only 555 */ 556 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0005,0x3f28); 557 } else if (stereo > 0x8000) { /* bilingual mode */ 558 if (bootverbose) printf ("%s: Bilingual mode detected\n", 559 bktr_name(bktr)); 560 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0008,0x0000);/* Loudspeaker */ 561 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0005,0x0000);/* all spatial effects off */ 562 } else { /* must be mono */ 563 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0008,0x0030);/* Loudspeaker */ 564 /* 565 set spatial effect strength to 50% enlargement 566 set spatial effect mode a, stereo basewidth enlargment 567 and pseudo stereo effect with automatic high-pass filter 568 */ 569 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0005,0x3f08); 570 } 571 #if 0 572 /* The reset value for Channel matrix mode is FM/AM and SOUNDA/LEFT */ 573 /* We would like STEREO instead val: 0x0020 */ 574 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0008,0x0020);/* Loudspeaker */ 575 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0009,0x0020);/* Headphone */ 576 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x000a,0x0020);/* SCART1 */ 577 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0041,0x0020);/* SCART2 */ 578 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x000b,0x0020);/* I2S */ 579 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x000c,0x0020);/* Quasi-Peak Detector Source */ 580 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x000e,0x0001); 581 #endif 582 break; 583 case 8: /* B/G FM NICAM */ 584 msp_dpl_write(bktr, bktr->msp_addr, 0x10, 0x0021,0x0001);/* Auto selection of NICAM/MONO mode */ 585 break; 586 case 9: /* L_AM NICAM or D/K*/ 587 case 10: /* i-FM NICAM */ 588 break; 589 default: 590 if (bootverbose) printf ("%s: Unknown autodetection result value: %d\n", 591 bktr_name(bktr), auto_detect); 592 } 593 594 } 595 596 597 /* uncomment the following line to enable the MSP34xx 1Khz Tone Generator */ 598 /* turn your speaker volume down low before trying this */ 599 /* msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0014, 0x7f40); */ 600 } 601 602 /* Read the DPL version string */ 603 void dpl_read_id( bktr_ptr_t bktr ){ 604 int rev1=0, rev2=0; 605 rev1 = msp_dpl_read(bktr, bktr->dpl_addr, 0x12, 0x001e); 606 rev2 = msp_dpl_read(bktr, bktr->dpl_addr, 0x12, 0x001f); 607 608 sprintf(bktr->dpl_version_string, "34%02d%c-%c%d", 609 ((rev2>>8)&0xff)-1, (rev1&0xff)+'@', ((rev1>>8)&0xff)+'@', rev2&0x1f); 610 } 611 612 /* Configure the DPL chip to Auto-detect the audio format */ 613 void dpl_autodetect( bktr_ptr_t bktr ) { 614 615 /* The following are empiric values tried from the DPL35xx data sheet */ 616 msp_dpl_write(bktr, bktr->dpl_addr, 0x12, 0x000c,0x0320); /* quasi peak detector source dolby 617 lr 0x03xx; quasi peak detector matrix 618 stereo 0xXX20 */ 619 msp_dpl_write(bktr, bktr->dpl_addr, 0x12, 0x0040,0x0060); /* Surround decoder mode; 620 ADAPTIVE/3D-PANORAMA, that means two 621 speakers and no center speaker, all 622 channels L/R/C/S mixed to L and R */ 623 msp_dpl_write(bktr, bktr->dpl_addr, 0x12, 0x0041,0x0620); /* surround source matrix;I2S2/STEREO*/ 624 msp_dpl_write(bktr, bktr->dpl_addr, 0x12, 0x0042,0x1F00); /* surround delay 31ms max */ 625 msp_dpl_write(bktr, bktr->dpl_addr, 0x12, 0x0043,0x0000); /* automatic surround input balance */ 626 msp_dpl_write(bktr, bktr->dpl_addr, 0x12, 0x0044,0x4000); /* surround spatial effect 50% 627 recommended*/ 628 msp_dpl_write(bktr, bktr->dpl_addr, 0x12, 0x0045,0x5400); /* surround panorama effect 66% 629 recommended with PANORAMA mode 630 in 0x0040 set to panorama */ 631 } 632 633