1 /* $OpenBSD: bktr_audio.c,v 1.9 2007/06/11 08:10:22 robert 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 #include <sys/proc.h>
55
56 #include <dev/ic/bt8xx.h> /* OpenBSD location of .h files */
57 #include <dev/pci/bktr/bktr_reg.h>
58 #include <dev/pci/bktr/bktr_core.h>
59 #include <dev/pci/bktr/bktr_tuner.h>
60 #include <dev/pci/bktr/bktr_card.h>
61 #include <dev/pci/bktr/bktr_audio.h>
62
63 /*
64 * Prototypes for the GV_BCTV specific functions.
65 */
66 void set_bctv_audio( bktr_ptr_t bktr );
67 void bctv_gpio_write( bktr_ptr_t bktr, int port, int val );
68 /*int bctv_gpio_read( bktr_ptr_t bktr, int port );*/ /* Not used */
69
70
71
72 /*
73 * init_audio_devices
74 * Reset any MSP34xx or TDA98xx audio devices.
75 */
76 void init_audio_devices( bktr_ptr_t bktr ) {
77
78 /* enable stereo if appropriate on TDA audio chip */
79 if ( bktr->card.dbx )
80 init_BTSC( bktr );
81
82 /* reset the MSP34xx stereo audio chip */
83 if ( bktr->card.msp3400c )
84 msp_dpl_reset( bktr, bktr->msp_addr );
85
86 /* reset the DPL35xx dolby audio chip */
87 if ( bktr->card.dpl3518a )
88 msp_dpl_reset( bktr, bktr->dpl_addr );
89
90 }
91
92
93 /*
94 *
95 */
96 #define AUDIOMUX_DISCOVER_NOT
97 int
98 set_audio( bktr_ptr_t bktr, int cmd )
99 {
100 u_int temp;
101 volatile u_char idx;
102
103 #if defined( AUDIOMUX_DISCOVER )
104 if ( cmd >= 200 )
105 cmd -= 200;
106 else
107 #endif /* AUDIOMUX_DISCOVER */
108
109 /* check for existance of audio MUXes */
110 if ( !bktr->card.audiomuxs[ 4 ] )
111 return( -1 );
112
113 switch (cmd) {
114 case AUDIO_TUNER:
115 #ifdef BKTR_REVERSEMUTE
116 bktr->audio_mux_select = 3;
117 #else
118 bktr->audio_mux_select = 0;
119 #endif
120
121 if (bktr->reverse_mute )
122 bktr->audio_mux_select = 0;
123 else
124 bktr->audio_mux_select = 3;
125
126 break;
127 case AUDIO_EXTERN:
128 bktr->audio_mux_select = 1;
129 break;
130 case AUDIO_INTERN:
131 bktr->audio_mux_select = 2;
132 break;
133 case AUDIO_MUTE:
134 bktr->audio_mute_state = TRUE; /* set mute */
135 break;
136 case AUDIO_UNMUTE:
137 bktr->audio_mute_state = FALSE; /* clear mute */
138 break;
139 default:
140 printf("%s: audio cmd error %02x\n", bktr_name(bktr),
141 cmd);
142 return( -1 );
143 }
144
145
146 /* Most cards have a simple audio multiplexer to select the
147 * audio source. The I/O_GV card has a more advanced multiplexer
148 * and requires special handling.
149 */
150 if ( bktr->bt848_card == CARD_IO_GV ) {
151 set_bctv_audio( bktr );
152 return( 0 );
153 }
154
155 /* Proceed with the simpler audio multiplexer code for the majority
156 * of Bt848 cards.
157 */
158
159 /*
160 * Leave the upper bits of the GPIO port alone in case they control
161 * something like the dbx or teletext chips. This doesn't guarantee
162 * success, but follows the rule of least astonishment.
163 */
164
165 if ( bktr->audio_mute_state == TRUE ) {
166 #ifdef BKTR_REVERSEMUTE
167 idx = 0;
168 #else
169 idx = 3;
170 #endif
171
172 if (bktr->reverse_mute )
173 idx = 3;
174 else
175 idx = 0;
176
177 }
178 else
179 idx = bktr->audio_mux_select;
180
181
182 temp = INL(bktr, BKTR_GPIO_DATA) & ~bktr->card.gpio_mux_bits;
183 #if defined( AUDIOMUX_DISCOVER )
184 OUTL(bktr, BKTR_GPIO_DATA, temp | (cmd & 0xff));
185 printf("%s: cmd: %d audio mux %x temp %x \n", bktr_name(bktr),
186 cmd, bktr->card.audiomuxs[ idx ], temp );
187 #else
188 OUTL(bktr, BKTR_GPIO_DATA, temp | bktr->card.audiomuxs[ idx ]);
189 #endif /* AUDIOMUX_DISCOVER */
190
191
192
193 /* Some new Hauppauge cards do not have an audio mux */
194 /* Instead we use the MSP34xx chip to select TV audio, Line-In */
195 /* FM Radio and Mute */
196 /* Examples of this are the Hauppauge 44xxx MSP34xx models */
197 /* It is ok to drive both the mux and the MSP34xx chip. */
198 /* If there is no mux, the MSP does the switching of the audio source */
199 /* If there is a mux, it does the switching of the audio source */
200
201 if ((bktr->card.msp3400c) && (bktr->audio_mux_present == 0)) {
202
203 if (bktr->audio_mute_state == TRUE ) {
204 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0000, 0x0000); /* volume to MUTE */
205 } else {
206 if(bktr->audio_mux_select == 0) { /* TV Tuner */
207 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0000, 0x7300); /* 0 db volume */
208 if (bktr->msp_source_selected != 0) msp_autodetect(bktr); /* setup TV audio mode */
209 bktr->msp_source_selected = 0;
210 }
211 if(bktr->audio_mux_select == 1) { /* Line In */
212 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0000, 0x7300); /* 0 db volume */
213 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x000d, 0x1900); /* scart prescale */
214 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0008, 0x0220); /* SCART | STEREO */
215 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0013, 0x0000); /* DSP In = SC1_IN_L/R */
216 bktr->msp_source_selected = 1;
217 }
218
219 if(bktr->audio_mux_select == 2) { /* FM Radio */
220 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0000, 0x7300); /* 0 db volume */
221 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x000d, 0x1900); /* scart prescale */
222 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0008, 0x0220); /* SCART | STEREO */
223 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0013, 0x0200); /* DSP In = SC2_IN_L/R */
224 bktr->msp_source_selected = 2;
225 }
226 }
227 }
228
229
230 return( 0 );
231 }
232
233
234 /*
235 *
236 */
237 void
238 temp_mute( bktr_ptr_t bktr, int flag )
239 {
240 static int muteState = FALSE;
241
242 if ( flag == TRUE ) {
243 muteState = bktr->audio_mute_state;
244 set_audio( bktr, AUDIO_MUTE ); /* prevent 'click' */
245 }
246 else {
247 tsleep( BKTR_SLEEP, PZERO, "tuning", hz/8 );
248 if ( muteState == FALSE )
249 set_audio( bktr, AUDIO_UNMUTE );
250 }
251 }
252
253 /* address of BTSC/SAP decoder chip */
254 #define TDA9850_WADDR 0xb6
255 #define TDA9850_RADDR 0xb7
256
257
258 /* registers in the TDA9850 BTSC/dbx chip */
259 #define CON1ADDR 0x04
260 #define CON2ADDR 0x05
261 #define CON3ADDR 0x06
262 #define CON4ADDR 0x07
263 #define ALI1ADDR 0x08
264 #define ALI2ADDR 0x09
265 #define ALI3ADDR 0x0a
266
267 /*
268 * initialise the dbx chip
269 * taken from the Linux bttv driver TDA9850 initialisation code
270 */
271 void
272 init_BTSC( bktr_ptr_t bktr )
273 {
274 i2cWrite(bktr, TDA9850_WADDR, CON1ADDR, 0x08); /* noise threshold st */
275 i2cWrite(bktr, TDA9850_WADDR, CON2ADDR, 0x08); /* noise threshold sap */
276 i2cWrite(bktr, TDA9850_WADDR, CON3ADDR, 0x40); /* stereo mode */
277 i2cWrite(bktr, TDA9850_WADDR, CON4ADDR, 0x07); /* 0 dB input gain? */
278 i2cWrite(bktr, TDA9850_WADDR, ALI1ADDR, 0x10); /* wideband alignment? */
279 i2cWrite(bktr, TDA9850_WADDR, ALI2ADDR, 0x10); /* spectral alignment? */
280 i2cWrite(bktr, TDA9850_WADDR, ALI3ADDR, 0x03);
281 }
282
283 /*
284 * setup the dbx chip
285 * XXX FIXME: alot of work to be done here, this merely unmutes it.
286 */
287 int
288 set_BTSC( bktr_ptr_t bktr, int control )
289 {
290 return( i2cWrite( bktr, TDA9850_WADDR, CON3ADDR, control ) );
291 }
292
293 /*
294 * CARD_GV_BCTV specific functions.
295 */
296
297 #define BCTV_AUDIO_MAIN 0x10 /* main audio program */
298 #define BCTV_AUDIO_SUB 0x20 /* sub audio program */
299 #define BCTV_AUDIO_BOTH 0x30 /* main(L) + sub(R) program */
300
301 #define BCTV_GPIO_REG0 1
302 #define BCTV_GPIO_REG1 3
303
304 #define BCTV_GR0_AUDIO_MODE 3
305 #define BCTV_GR0_AUDIO_MAIN 0 /* main program */
306 #define BCTV_GR0_AUDIO_SUB 3 /* sub program */
307 #define BCTV_GR0_AUDIO_BOTH 1 /* main(L) + sub(R) */
308 #define BCTV_GR0_AUDIO_MUTE 4 /* audio mute */
309 #define BCTV_GR0_AUDIO_MONO 8 /* force mono */
310
311 void
312 set_bctv_audio( bktr_ptr_t bktr )
313 {
314 int data;
315
316 switch (bktr->audio_mux_select) {
317 case 1: /* external */
318 case 2: /* internal */
319 bctv_gpio_write(bktr, BCTV_GPIO_REG1, 0);
320 break;
321 default: /* tuner */
322 bctv_gpio_write(bktr, BCTV_GPIO_REG1, 1);
323 break;
324 }
325 /* switch (bktr->audio_sap_select) { */
326 switch (BCTV_AUDIO_BOTH) {
327 case BCTV_AUDIO_SUB:
328 data = BCTV_GR0_AUDIO_SUB;
329 break;
330 case BCTV_AUDIO_BOTH:
331 data = BCTV_GR0_AUDIO_BOTH;
332 break;
333 case BCTV_AUDIO_MAIN:
334 default:
335 data = BCTV_GR0_AUDIO_MAIN;
336 break;
337 }
338 if (bktr->audio_mute_state == TRUE)
339 data |= BCTV_GR0_AUDIO_MUTE;
340
341 bctv_gpio_write(bktr, BCTV_GPIO_REG0, data);
342
343 return;
344 }
345
346 /* gpio_data bit assignment */
347 #define BCTV_GPIO_ADDR_MASK 0x000300
348 #define BCTV_GPIO_WE 0x000400
349 #define BCTV_GPIO_OE 0x000800
350 #define BCTV_GPIO_VAL_MASK 0x00f000
351
352 #define BCTV_GPIO_PORT_MASK 3
353 #define BCTV_GPIO_ADDR_SHIFT 8
354 #define BCTV_GPIO_VAL_SHIFT 12
355
356 /* gpio_out_en value for read/write */
357 #define BCTV_GPIO_OUT_RMASK 0x000f00
358 #define BCTV_GPIO_OUT_WMASK 0x00ff00
359
360 #define BCTV_BITS 100
361
362 void
363 bctv_gpio_write( bktr_ptr_t bktr, int port, int val )
364 {
365 u_int data, outbits;
366
367 port &= BCTV_GPIO_PORT_MASK;
368 switch (port) {
369 case 1:
370 case 3:
371 data = ((val << BCTV_GPIO_VAL_SHIFT) & BCTV_GPIO_VAL_MASK) |
372 ((port << BCTV_GPIO_ADDR_SHIFT) & BCTV_GPIO_ADDR_MASK) |
373 BCTV_GPIO_WE | BCTV_GPIO_OE;
374 outbits = BCTV_GPIO_OUT_WMASK;
375 break;
376 default:
377 return;
378 }
379 OUTL(bktr, BKTR_GPIO_OUT_EN, 0);
380 OUTL(bktr, BKTR_GPIO_DATA, data);
381 OUTL(bktr, BKTR_GPIO_OUT_EN, outbits);
382 DELAY(BCTV_BITS);
383 OUTL(bktr, BKTR_GPIO_DATA, data & ~BCTV_GPIO_WE);
384 DELAY(BCTV_BITS);
385 OUTL(bktr, BKTR_GPIO_DATA, data);
386 DELAY(BCTV_BITS);
387 OUTL(bktr, BKTR_GPIO_DATA, ~0);
388 OUTL(bktr, BKTR_GPIO_OUT_EN, 0);
389 }
390
391 /* Not yet used
392 int
393 bctv_gpio_read( bktr_ptr_t bktr, int port )
394 {
395 u_int data, outbits, ret;
396
397 port &= BCTV_GPIO_PORT_MASK;
398 switch (port) {
399 case 1:
400 case 3:
401 data = ((port << BCTV_GPIO_ADDR_SHIFT) & BCTV_GPIO_ADDR_MASK) |
402 BCTV_GPIO_WE | BCTV_GPIO_OE;
403 outbits = BCTV_GPIO_OUT_RMASK;
404 break;
405 default:
406 return( -1 );
407 }
408 OUTL(bktr, BKTR_GPIO_OUT_EN, 0);
409 OUTL(bktr, BKTR_GPIO_DATA, data);
410 OUTL(bktr, BKTR_GPIO_OUT_EN, outbits);
411 DELAY(BCTV_BITS);
412 OUTL(bktr, BKTR_GPIO_DATA, data & ~BCTV_GPIO_OE);
413 DELAY(BCTV_BITS);
414 ret = INL(bktr, BKTR_GPIO_DATA);
415 DELAY(BCTV_BITS);
416 OUTL(bktr, BKTR_GPIO_DATA, data);
417 DELAY(BCTV_BITS);
418 OUTL(bktr, BKTR_GPIO_DATA, ~0);
419 OUTL(bktr, BKTR_GPIO_OUT_EN, 0);
420 return( (ret & BCTV_GPIO_VAL_MASK) >> BCTV_GPIO_VAL_SHIFT );
421 }
422 */
423
424 /*
425 * setup the MSP34xx Stereo Audio Chip
426 * This uses the Auto Configuration Option on MSP3410D and MSP3415D chips
427 * and DBX mode selection for MSP3430G chips.
428 * For MSP3400C support, the full programming sequence is required and is
429 * not yet supported.
430 */
431
432 /* Read the MSP version string */
433 void msp_read_id( bktr_ptr_t bktr ){
434 int rev1=0, rev2=0;
435 rev1 = msp_dpl_read(bktr, bktr->msp_addr, 0x12, 0x001e);
436 rev2 = msp_dpl_read(bktr, bktr->msp_addr, 0x12, 0x001f);
437
438 snprintf(bktr->msp_version_string, sizeof bktr->msp_version_string,
439 "34%02d%c-%c%d", (rev2>>8)&0xff, (rev1&0xff)+'@', ((rev1>>8)&0xff)+'@',
440 rev2&0x1f);
441
442 }
443
444
445 /* Configure the MSP chip to Auto-detect the audio format.
446 * For the MSP3430G, we use fast autodetect mode
447 * For the MSP3410/3415 there are two schemes for this
448 * a) Fast autodetection - the chip is put into autodetect mode, and the function
449 * returns immediately. This works in most cases and is the Default Mode.
450 * b) Slow mode. The function sets the MSP3410/3415 chip, then waits for feedback from
451 * the chip and re-programs it if needed.
452 */
453 void msp_autodetect( bktr_ptr_t bktr ) {
454 int auto_detect, loops;
455 int stereo;
456
457 /* MSP3430G - countries with mono and DBX stereo */
458 if (strncmp("3430G", bktr->msp_version_string, 5) == 0 ||
459 strncmp("3435G", bktr->msp_version_string, 5) == 0) {
460
461 msp_dpl_write(bktr, bktr->msp_addr, 0x10, 0x0030,0x2003);/* Enable Auto format detection */
462 msp_dpl_write(bktr, bktr->msp_addr, 0x10, 0x0020,0x0020);/* Standard Select Reg. = BTSC-Stereo*/
463 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x000E,0x2403);/* darned if I know */
464 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0008,0x0320);/* Source select = (St or A) */
465 /* & Ch. Matrix = St */
466 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0000,0x7300);/* Set volume to 0db gain */
467 }
468
469
470 /* MSP3415D SPECIAL CASE Use the Tuner's Mono audio output for the MSP */
471 /* (for Hauppauge 44xxx card with Tuner Type 0x2a) */
472 else if ( ( (strncmp("3415D", bktr->msp_version_string, 5) == 0)
473 &&(bktr->msp_use_mono_source == 1)
474 )
475 || (bktr->slow_msp_audio == 2) ){
476 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0000, 0x7300); /* 0 db volume */
477 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x000d, 0x1900); /* scart prescale */
478 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0008, 0x0220); /* SCART | STEREO */
479 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0013, 0x0100); /* DSP In = MONO IN */
480 }
481
482
483 /* MSP3410/MSP3415 - countries with mono, stereo using 2 FM channels and NICAM */
484 /* FAST sound scheme */
485 else if (bktr->slow_msp_audio == 0) {
486 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0000,0x7300);/* Set volume to 0db gain */
487 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0008,0x0000);/* Spkr Source = default(FM/AM) */
488 msp_dpl_write(bktr, bktr->msp_addr, 0x10, 0x0020,0x0001);/* Enable Auto format detection */
489 msp_dpl_write(bktr, bktr->msp_addr, 0x10, 0x0021,0x0001);/* Auto selection of NICAM/MONO mode */
490 }
491
492
493 /* MSP3410/MSP3415 - European Countries where the fast MSP3410/3415 programming fails */
494 /* SLOW sound scheme */
495 else if ( bktr->slow_msp_audio == 1) {
496 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0000,0x7300);/* Set volume to 0db gain */
497 msp_dpl_write(bktr, bktr->msp_addr, 0x10, 0x0020,0x0001);/* Enable Auto format detection */
498
499 /* wait for 0.5s max for terrestrial sound autodetection */
500 loops = 10;
501 do {
502 DELAY(100000);
503 auto_detect = msp_dpl_read(bktr, bktr->msp_addr, 0x10, 0x007e);
504 loops++;
505 } while (auto_detect > 0xff && loops < 50);
506 if (bootverbose)printf ("%s: Result of autodetect after %dms: %d\n",
507 bktr_name(bktr), loops*10, auto_detect);
508
509 /* Now set the audio baseband processing */
510 switch (auto_detect) {
511 case 0: /* no TV sound standard detected */
512 break;
513 case 2: /* M Dual FM */
514 break;
515 case 3: /* B/G Dual FM; German stereo */
516 /* Read the stereo detection value from DSP reg 0x0018 */
517 DELAY(20000);
518 stereo = msp_dpl_read(bktr, bktr->msp_addr, 0x12, 0x0018);
519 if (bootverbose)printf ("%s: Stereo reg 0x18 a: %d\n",
520 bktr_name(bktr), stereo);
521 DELAY(20000);
522 stereo = msp_dpl_read(bktr, bktr->msp_addr, 0x12, 0x0018);
523 if (bootverbose)printf ("%s: Stereo reg 0x18 b: %d\n",
524 bktr_name(bktr), stereo);
525 DELAY(20000);
526 stereo = msp_dpl_read(bktr, bktr->msp_addr, 0x12, 0x0018);
527 if (bootverbose)printf ("%s: Stereo reg 0x18 c: %d\n",
528 bktr_name(bktr), stereo);
529 if (stereo > 0x0100 && stereo < 0x8000) { /* Seems to be stereo */
530 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0008,0x0020);/* Loudspeaker set stereo*/
531 /*
532 set spatial effect strength to 50% enlargement
533 set spatial effect mode b, stereo basewidth enlargment only
534 */
535 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0005,0x3f28);
536 } else if (stereo > 0x8000) { /* bilingual mode */
537 if (bootverbose) printf ("%s: Bilingual mode detected\n",
538 bktr_name(bktr));
539 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0008,0x0000);/* Loudspeaker */
540 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0005,0x0000);/* all spatial effects off */
541 } else { /* must be mono */
542 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0008,0x0030);/* Loudspeaker */
543 /*
544 set spatial effect strength to 50% enlargement
545 set spatial effect mode a, stereo basewidth enlargment
546 and pseudo stereo effect with automatic high-pass filter
547 */
548 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0005,0x3f08);
549 }
550 #if 0
551 /* The reset value for Channel matrix mode is FM/AM and SOUNDA/LEFT */
552 /* We would like STEREO instead val: 0x0020 */
553 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0008,0x0020);/* Loudspeaker */
554 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0009,0x0020);/* Headphone */
555 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x000a,0x0020);/* SCART1 */
556 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0041,0x0020);/* SCART2 */
557 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x000b,0x0020);/* I2S */
558 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x000c,0x0020);/* Quasi-Peak Detector Source */
559 msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x000e,0x0001);
560 #endif
561 break;
562 case 8: /* B/G FM NICAM */
563 msp_dpl_write(bktr, bktr->msp_addr, 0x10, 0x0021,0x0001);/* Auto selection of NICAM/MONO mode */
564 break;
565 case 9: /* L_AM NICAM or D/K*/
566 case 10: /* i-FM NICAM */
567 break;
568 default:
569 if (bootverbose) printf ("%s: Unknown autodetection result value: %d\n",
570 bktr_name(bktr), auto_detect);
571 }
572
573 }
574
575
576 /* uncomment the following line to enable the MSP34xx 1KHz Tone Generator */
577 /* turn your speaker volume down low before trying this */
578 /* msp_dpl_write(bktr, bktr->msp_addr, 0x12, 0x0014, 0x7f40); */
579 }
580
581 /* Read the DPL version string */
582 void dpl_read_id( bktr_ptr_t bktr ){
583 int rev1=0, rev2=0;
584 rev1 = msp_dpl_read(bktr, bktr->dpl_addr, 0x12, 0x001e);
585 rev2 = msp_dpl_read(bktr, bktr->dpl_addr, 0x12, 0x001f);
586
587 snprintf(bktr->dpl_version_string, sizeof bktr->dpl_version_string,
588 "34%02d%c-%c%d", ((rev2>>8)&0xff)-1, (rev1&0xff)+'@',
589 ((rev1>>8)&0xff)+'@', rev2&0x1f);
590 }
591
592 /* Configure the DPL chip to Auto-detect the audio format */
593 void dpl_autodetect( bktr_ptr_t bktr ) {
594
595 /* The following are empiric values tried from the DPL35xx data sheet */
596 msp_dpl_write(bktr, bktr->dpl_addr, 0x12, 0x000c,0x0320); /* quasi peak detector source dolby
597 lr 0x03xx; quasi peak detector matrix
598 stereo 0xXX20 */
599 msp_dpl_write(bktr, bktr->dpl_addr, 0x12, 0x0040,0x0060); /* Surround decoder mode;
600 ADAPTIVE/3D-PANORAMA, that means two
601 speakers and no center speaker, all
602 channels L/R/C/S mixed to L and R */
603 msp_dpl_write(bktr, bktr->dpl_addr, 0x12, 0x0041,0x0620); /* surround source matrix;I2S2/STEREO*/
604 msp_dpl_write(bktr, bktr->dpl_addr, 0x12, 0x0042,0x1F00); /* surround delay 31ms max */
605 msp_dpl_write(bktr, bktr->dpl_addr, 0x12, 0x0043,0x0000); /* automatic surround input balance */
606 msp_dpl_write(bktr, bktr->dpl_addr, 0x12, 0x0044,0x4000); /* surround spatial effect 50%
607 recommended*/
608 msp_dpl_write(bktr, bktr->dpl_addr, 0x12, 0x0045,0x5400); /* surround panorama effect 66%
609 recommended with PANORAMA mode
610 in 0x0040 set to panorama */
611 }
612