Annotation of sys/dev/pci/bktr/bktr_audio.c, Revision 1.1.1.1
1.1 nbrk 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:
CVSweb
![[BACK]](/icons/back.gif){kind=icon}
Return to bktr_audio.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / sys / dev / pci / bktr