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xenocara/xserver/hw/xfree86/i2c/msp3430.c
matthieu 889b860699 Importing xserver from X.Org 7.2RC2
2006-11-26 18:13:41 +00:00

727 lines
20 KiB
C
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#ifdef HAVE_XORG_CONFIG_H
#include <xorg-config.h>
#endif
#include <string.h>
#include <unistd.h>
#include "xf86.h"
#include "xf86i2c.h"
#include "msp3430.h"
#include "i2c_def.h"
#define CONTROL 0x00
#define WR_DEM 0x10
#define RD_DEM 0x11
#define WR_DSP 0x12
#define RD_DSP 0x13
void InitMSP34xxG(MSP3430Ptr m);
void InitMSP34x5D(MSP3430Ptr m);
void CheckModeMSP34x5D(MSP3430Ptr m);
char *MSP_getProductName (CARD16 product_id);
void mpause(int milliseconds);
#define __MSPDEBUG__ 0
#if __MSPDEBUG__ > 3
void MSPBeep(MSP3430Ptr m, CARD8 freq);
#define __MSPBEEP MSPBeep(m,0x14);
#else
#define __MSPBEEP
#endif
static void SetMSP3430Control(MSP3430Ptr m, CARD8 RegAddress, CARD8 RegValueHigh, CARD8 RegValueLow)
{
I2CByte data[3];
data[0]=RegAddress;
data[1]=RegValueHigh;
data[2]=RegValueLow;
I2C_WriteRead(&(m->d),data,3,NULL,0);
}
static void SetMSP3430Data(MSP3430Ptr m, CARD8 RegAddress, CARD8 RegSubAddressHigh, CARD8 RegSubAddressLow,
CARD8 RegValueHigh, CARD8 RegValueLow)
{
I2CByte data[5];
#ifdef MSP_DEBUG
if(!m->registers_present[RegSubAddressLow]){
xf86DrvMsg(m->d.pI2CBus->scrnIndex,X_ERROR, "Attempt to access non-existent register in MSP34xxX: 0x%02x 0x%02x 0x%02x <- 0x%02x 0x%02x\n",
RegAddress, RegSubAddressHigh, RegSubAddressLow, RegValueHigh, RegValueLow);
}
#endif
data[0] = RegAddress;
data[1] = RegSubAddressHigh;
data[2] = RegSubAddressLow;
data[3] = RegValueHigh;
data[4] = RegValueLow;
I2C_WriteRead(&(m->d),data,5,NULL,0);
}
static void GetMSP3430Data(MSP3430Ptr m, CARD8 RegAddress, CARD8 RegSubAddressHigh, CARD8 RegSubAddressLow,
CARD8 *RegValueHigh, CARD8 *RegValueLow)
{
I2CByte send[3];
I2CByte receive[2];
send[0] = RegAddress;
send[1] = RegSubAddressHigh;
send[2] = RegSubAddressLow;
I2C_WriteRead(&(m->d), send, 3, receive, 2);
*RegValueHigh = receive[0];
*RegValueLow = receive[1];
}
#if __MSPDEBUG__ > 2
static void MSP3430DumpStatus(MSP3430Ptr m)
{
CARD8 status_hi, status_lo;
CARD8 subaddr, data[2];
GetMSP3430Data(m, RD_DEM, 0x02, 0x00, &status_hi, &status_lo);
xf86DrvMsg(m->d.pI2CBus->scrnIndex, X_INFO, "MSP34xx: SAP(8)=%d mono/NICAM(7)=%d stereo=%d %s O_1=%d O_0=%d 2nd car=%d 1st car=%d\n",
status_hi & 1, (status_lo>>7) & 1, (status_lo>>6)&1,
(status_lo>>5)? ( (status_hi>>1)&1? "bad NICAM reception" : "NICAM" ) :
((status_hi>>1)&1 ? "bogus" : "ANALOG FM/AM") ,
(status_lo>>4)&1, (status_lo>>3)&1,!( (status_lo>>2)&1), !((status_lo>>1)&1));
GetMSP3430Data(m, RD_DEM, 0x00, 0x7E, &status_hi, &status_lo);
xf86DrvMsg(m->d.pI2CBus->scrnIndex, X_INFO, "MSP34xx: standard result=0x%02x%02x\n",
status_hi, status_lo);
subaddr=0x0;
I2C_WriteRead(&(m->d), &subaddr, 1, data, 2);
xf86DrvMsg(m->d.pI2CBus->scrnIndex, X_INFO, "MSP34xx: control=0x%02x%02x\n",
data[1], data[0]);
}
#endif
/* wrapper */
void InitMSP3430(MSP3430Ptr m)
{
#if __MSPDEBUG__ > 1
xf86DrvMsg(m->d.pI2CBus->scrnIndex,X_INFO,"InitMSP3430(m->connector=%d, m->standard=%d, m->chip_family=%d)\n",
m->connector, m->standard, m->chip_family);
#endif
switch (m->chip_family) {
case MSPFAMILY_34x0G:
InitMSP34xxG(m);
break;
case MSPFAMILY_34x5G:
InitMSP34xxG(m);
break;
case MSPFAMILY_34x5D:
InitMSP34x5D(m);
break;
}
}
/*-----------------------------------------------------------------
| common functions for all MSP34xx chips
|----------------------------------------------------------------*/
MSP3430Ptr DetectMSP3430(I2CBusPtr b, I2CSlaveAddr addr)
{
MSP3430Ptr m;
I2CByte a;
CARD8 hardware_version, major_revision, product_code, rom_version;
Bool supported;
m = xcalloc(1,sizeof(MSP3430Rec));
if(m == NULL)return NULL;
m->d.DevName = strdup("MSP34xx");
m->d.SlaveAddr = addr;
m->d.pI2CBus = b;
m->d.NextDev = NULL;
m->d.StartTimeout = b->StartTimeout;
m->d.BitTimeout = b->BitTimeout;
m->d.AcknTimeout = b->AcknTimeout;
m->d.ByteTimeout = b->ByteTimeout;
if(!I2C_WriteRead(&(m->d), NULL, 0, &a, 1))
{
xfree(m->d.DevName);
xfree(m);
return NULL;
}
m->standard=MSP3430_NTSC;
m->connector=MSP3430_CONNECTOR_1;
m->mode=MSPMODE_STEREO_A; /*stereo or chanel A if avail. */
m->c_format=MSPFORMAT_UNKNOWN;
m->c_standard=MSPSTANDARD_UNKNOWN;
m->c_matrix=m->c_fmmatrix=m->c_source=0;
m->volume=0;
m->recheck=FALSE;
GetMSP3430Data(m, RD_DSP, 0x00, 0x1E, &hardware_version, &major_revision);
GetMSP3430Data(m, RD_DSP, 0x00, 0x1F, &product_code, &rom_version);
m->hardware_version=hardware_version;
m->major_revision=major_revision;
m->product_code=product_code;
m->rom_version=rom_version;
m->chip_id=((major_revision << 8) | product_code);
supported=FALSE;
switch (major_revision) {
case 4: /* 34xxD */
switch (product_code) {
case 0x05: /* 3405D */
case 0x0A: /* 3410D */
case 0x0F: /* 3415D */
m->chip_family=MSPFAMILY_34x5D;
m->recheck=TRUE;
supported=TRUE;
break;
default:
m->chip_family=MSPFAMILY_34x0D;
}
break;
case 7: /* 34xxG */
switch(product_code){
case 0x00:
case 0x0A:
case 0x1E:
case 0x28:
case 0x32:
m->chip_family=MSPFAMILY_34x0G;
supported=TRUE;
break;
case 0x0f:
case 0x19:
case 0x2d:
case 0x37:
case 0x41:
m->chip_family=MSPFAMILY_34x5G;
supported=TRUE;
#ifdef MSP_DEBUG
memset(m->registers_present, 0, 256);
#define A(num) m->registers_present[(num)]=1;
#define B(num1, num2) memset(&(m->registers_present[num1]), 1, num2-num1);
A(0x20)
A(0x30)
A(0x40)
A(0x00)
B(0x01, 0x08)
B(0x0B, 0x0E)
A(0x10)
B(0x12,0x14)
A(0x16)
A(0x29)
#undef B
#undef A
#endif
break;
default:
m->chip_family=MSPFAMILY_UNKNOWN;
}
break;
default:
m->chip_family=MSPFAMILY_UNKNOWN;
}
xf86DrvMsg(m->d.pI2CBus->scrnIndex, X_INFO, "Found %s%s, rom version 0x%02x, chip_id=0x%04x\n",
MSP_getProductName(m->chip_id), supported?"":" (unsupported)", rom_version, m->chip_id);
if (!supported) {
xfree(m->d.DevName);
xfree(m);
return NULL;
}
if(!I2CDevInit(&(m->d)))
{
xfree(m->d.DevName);
xfree(m);
return NULL;
}
return m;
}
void ResetMSP3430(MSP3430Ptr m)
{
/* Reset the MSP3430 */
SetMSP3430Control(m, 0x00, 0x80, 0x00);
/* Set it back to normal operation */
SetMSP3430Control(m, 0x00, 0x00, 0x00);
m->c_format=MSPFORMAT_UNKNOWN;
m->c_standard=MSPSTANDARD_UNKNOWN;
m->c_matrix=m->c_fmmatrix=m->c_source=0;
m->volume=0;
}
void MSP3430SetVolume (MSP3430Ptr m, CARD8 value)
{
CARD8 result;
#if 0
CARD8 old_volume;
GetMSP3430Data(m, RD_DSP, 0x00, 0x00, &old_volume, &result);
xf86DrvMsg(m->d.pI2CBus->scrnIndex, X_INFO, "MSP3430 result 0x%02x\n", result);
#endif
/* save an extra Get call */
result=0;
SetMSP3430Data(m, WR_DSP, 0x00, 0x00, value, result);
SetMSP3430Data(m, WR_DSP, 0x00, 0x07, value, 0);
m->volume=value;
#if __MSPDEBUG__ > 2
MSP3430DumpStatus(m);
__MSPBEEP
GetMSP3430Data(m, RD_DSP, 0x00, 0x00, &old_volume, &result);
xf86DrvMsg(m->d.pI2CBus->scrnIndex, X_INFO, "MSP3430 volume 0x%02x\n",value);
#endif
}
void MSP3430SetSAP (MSP3430Ptr m, int mode)
{
xf86DrvMsg(m->d.pI2CBus->scrnIndex, X_INFO, "Put actual code to change SAP here\n");
SetMSP3430Data(m, WR_DSP, 0x00, 0x08, mode & 0xff, 0x20);
}
#if 0
void MSP3430SetSource(MSP3430Ptr m, CARD8 value)
{
/* Write to DSP, register 0x0008, (loudspeaker channel source/matrix) */
/* This sets the source to the TV tuner, for stereo operation */
SetMSP3430Data(m, WR_DSP, 0x00, 0x08, value, 0x20);
}
#endif
char *MSP_getProductName (CARD16 product_id)
{
switch (product_id) {
case 0x0400: return "MSP3400D";
case 0x040a: return "MSP3410D";
case 0x0405: return "MSP3405D";
case 0x040f: return "MSP3415D";
case 0x0700: return "MSP3400G";
case 0x070a: return "MSP3410G";
case 0x071e: return "MSP3430G";
case 0x0728: return "MSP3440G";
case 0x0732: return "MSP3450G";
case 0x070f: return "MSP3415G";
case 0x0719: return "MSP3425G";
case 0x072d: return "MSP3445G";
case 0x0737: return "MSP3455G";
case 0x0741: return "MSP3465G";
}
return "MSP - unknown type";
}
#if __MSPDEBUG__ > 2
/*puts beep in MSP output
freq = 0x01 - 16Hz ... 0x40 - 1kHz ... 0xff - 4kHz
*/
void MSPBeep(MSP3430Ptr m, CARD8 freq) {
SetMSP3430Data (m, WR_DSP, 0x00, freq, 0x7f, 0x40);
mpause(100);
SetMSP3430Data (m, WR_DSP, 0x00, 0x14, 0x00, 0x00);
}
#endif
void mpause(int milliseconds) {
int i,m;
m=milliseconds/20;
for (i=0;i<m;i++) usleep(20000);
}
/*-----------------------------------------------------------------
| specific functions for all MSP34xxG chips
|----------------------------------------------------------------*/
void InitMSP34xxG(MSP3430Ptr m)
{
#if __MSPDEBUG__ > 1
xf86DrvMsg(m->d.pI2CBus->scrnIndex,X_INFO,"InitMSP34xxG(m->connector=%d, m->standard=%d, m->chip_family=%d)\n",
m->connector, m->standard, m->chip_family);
#endif
/* Reset MSP3430 */
SetMSP3430Control(m, 0x00, 0x80, 0x00);
/* Set it back to normal operation */
SetMSP3430Control(m, 0x00, 0x00, 0x00);
/*set MODUS register */
/* bits: 0 - automatic sound detection */
/* 1 - enable STATUS change */
/* 12 - detect 6.5 Mhz carrier as D/K1, D/K2 or D/K NICAM (does not seem to work ) */
/* 13 - detect 4.5 Mhz carrier as BTSC */
if ( (m->standard & 0xff) == MSP3430_PAL )
{
SetMSP3430Data(m, WR_DEM, 0x00, 0x30, 0x30, 0x03|0x08); /* make O_ pins tristate */
/* PAL standard */
SetMSP3430Data(m, WR_DEM, 0x00, 0x20, 0x00, 0x01); /* possibly wrong */
} else {
SetMSP3430Data(m, WR_DEM, 0x00, 0x30, 0x20, 0x03|0x08);
/* standard selection is M-BTSC-Stereo */
SetMSP3430Data(m, WR_DEM, 0x00, 0x20, 0x00, 0x20);
}
switch(m->connector){
case MSP3430_CONNECTOR_1:
SetMSP3430Data(m, WR_DSP, 0x00, 0x08, 0x03, 0x20);
break;
case MSP3430_CONNECTOR_2:
/* this has not been checked yet.. could be bogus */
/* SCART Input Prescale: 0 dB gain */
SetMSP3430Data(m, WR_DSP, 0x00, 0x0d, 0x19, 0x00);
SetMSP3430Data(m, WR_DSP, 0x00, 0x08, 0x02, 0x20);
break;
case MSP3430_CONNECTOR_3:
default:
/* SCART Input Prescale: 0 dB gain */
SetMSP3430Data(m, WR_DSP, 0x00, 0x0d, 0x19, 0x00);
SetMSP3430Data(m, WR_DSP, 0x00, 0x08, 0x02, 0x20);
break;
}
switch(m->standard){
case MSP3430_PAL:
SetMSP3430Data(m, WR_DSP, 0x00, 0x0e, 0x24, 0x03);
SetMSP3430Data(m, WR_DSP, 0x00, 0x10, 0x00, 0x5a);
SetMSP3430Data(m, WR_DEM, 0x00, 0x20, 0x00, 0x03);
/* Set volume to FAST_MUTE. */
SetMSP3430Data(m, WR_DSP, 0x00, 0x00, 0xFF, 0x00);
break;
case MSP3430_PAL_DK1:
SetMSP3430Data(m, WR_DSP, 0x00, 0x0e, 0x24, 0x03);
SetMSP3430Data(m, WR_DSP, 0x00, 0x10, 0x00, 0x5a);
SetMSP3430Data(m, WR_DEM, 0x00, 0x20, 0x00, 0x04);
/* Set volume to FAST_MUTE. */
SetMSP3430Data(m, WR_DSP, 0x00, 0x00, 0xFF, 0x00);
break;
case MSP3430_SECAM: /* is this right ? */
case MSP3430_NTSC:
/* Write to DSP, register 0x000E, (prescale FM/FM matrix) */
SetMSP3430Data(m, WR_DSP, 0x00, 0x0e, 0x24, 0x03);
/* Set volume to FAST_MUTE. */
SetMSP3430Data(m, WR_DSP, 0x00, 0x00, 0xFF, 0x00);
break;
}
}
/*-----------------------------------------------------------------
| specific functions for all MSP34x5D chips
|----------------------------------------------------------------*/
void InitMSP34x5D(MSP3430Ptr m)
{
int count;
CARD8 high,low;
CARD16 result,standard;
CARD16 peak;
if (m->c_format==MSPFORMAT_UNKNOWN) ResetMSP3430(m);
else {
/*mute volume*/
SetMSP3430Data (m, WR_DSP, 0x00, 0x00, 0x00, 0x00);
}
switch(m->connector){
case MSP3430_CONNECTOR_2:
case MSP3430_CONNECTOR_3:
if (m->c_format!=MSPFORMAT_SCART) {
/* SCART Input Prescale: 0 dB gain */
SetMSP3430Data (m, WR_DSP, 0x00, 0x0d, 0x19, 0x00);
/* this has not been checked yet.. could be bogus */
m->c_format=MSPFORMAT_SCART; /*stereo*/
}
break;
case MSP3430_CONNECTOR_1:
default:
switch ( m->standard & 0x00ff ) {
case MSP3430_PAL:
switch( m->standard ) {
case MSP3430_PAL_DK1:
standard=MSPSTANDARD_FM_DK1;
break;
/* case MSP3430_PAL_DK2:
standard=MSPSTANDARD_FM_DK2;
break;
case MSP3430_PAL_BG:
may be FM stereo (Germany) or FM NICAM (Scandinavia,spain)
standard=MSPSTANDARD_AUTO;
break;
*/
default:
standard=MSPSTANDARD_AUTO;
}
break;
case MSP3430_SECAM:
standard=MSPSTANDARD_AUTO;
case MSP3430_NTSC:
/* Only MSP34x5 supported format - Korean NTSC-M*/
standard=MSPSTANDARD_FM_M;
default:
standard=MSPSTANDARD_AUTO;
}
/*no NICAM support in MSP3410D - force to autodetect*/
if ((m->chip_id==0x405) && (standard>=MSPSTANDARD_NICAM_BG))
standard=MSPSTANDARD_AUTO;
if (m->c_standard != standard) {
SetMSP3430Data (m, WR_DEM, 0x00, 0x20, standard>>8, standard & 0xFF);
if (standard==MSPSTANDARD_AUTO) {
count = 50; /* time shouldn't exceed 1s, just in case */
do {
usleep(20000);
GetMSP3430Data (m, RD_DEM, 0x00, 0x7e, &high, &low);
result = ( high << 8 ) | low;
--count;
} while( result > 0x07ff && count > 0 );
if ((result > MSPSTANDARD_AUTO))
standard=result;
else standard=MSPSTANDARD_UNKNOWN;
#if __MSPDEBUG__ > 1
xf86DrvMsg(m->d.pI2CBus->scrnIndex,X_INFO,"Detected audio standard: %d\n",result);
#endif
/* result = MSPSTANDARD_NICAM_L can be one of:
SECAM_L - MSPSTANDARD_NICAM_L
D/K1 - MSPSTANDARD_FM_DK1
D/K2 - MSPSTANDARD_FM_DK2
D/K-NICAM - MSPSTANDARD_NICAM_DK*/
if( standard == MSPSTANDARD_NICAM_L ) {
if ((m->standard & 0x00ff)==MSP3430_PAL) {
/* force PAL D/K */
standard=MSPSTANDARD_FM_DK1;
SetMSP3430Data (m, WR_DEM, 0x00, 0x20, standard>>8, standard & 0xFF);
#if __MSPDEBUG__ > 1
xf86DrvMsg(m->d.pI2CBus->scrnIndex,X_INFO, "Detected 6.5MHz carrier - forced to D/K1 !!!\n" );
#endif
}
}
}
m->c_standard=standard;
} /*end - standard changed*/
else {
if (standard<MSPSTANDARD_NICAM_BG) {
/* get old value of ident. mode register*/
GetMSP3430Data (m, RD_DSP, 0x00, 0x15, &high, &low);
/* reset Ident-Filter */
SetMSP3430Data (m, WR_DSP, 0x00, 0x14, 0x00, 0x3F);
/* put back old value to ident. mode register*/
SetMSP3430Data (m, WR_DSP, 0x00, 0x14, 0x00, low);
}
}
if (standard<=MSPSTANDARD_AUTO) {
m->c_format=MSPFORMAT_1xFM;
}
else if (standard<MSPSTANDARD_NICAM_BG) {
/* set FM prescale */
SetMSP3430Data (m, WR_DSP, 0x00, 0x0e, 0x30, 0);
/* set FM deemphasis*/
SetMSP3430Data (m, WR_DSP, 0x00, 0x0f, ((standard==MSPSTANDARD_FM_M)?0:1), 0);
/* check if FM2 carrier is present */
/*turn off FM DC Notch*/
SetMSP3430Data (m, WR_DSP, 0x00, 0x17, 0x00, 0x3f);
/*matrix source for Quasi-Peak Detector - stereo: ch2->L ch1->R*/
SetMSP3430Data (m, WR_DSP, 0x00, 0x0c, 0x00, 0x20);
mpause(250);
GetMSP3430Data (m, RD_DSP, 0x00, 0x1A, &high, &low);
peak = (high << 8) | low;
#if __MSPDEBUG__ > 1
xf86DrvMsg(m->d.pI2CBus->scrnIndex,X_INFO,"Second carrier Quasi-Peak detection: %d\n",peak);
#endif
/*turn on FM DC Notch*/
SetMSP3430Data (m, WR_DSP, 0x00, 0x17, 0x00, 0x00);
if (peak<5) {
/* if second carrier not detected - only mono from first carrier*/
m->c_format=MSPFORMAT_1xFM;
}
else {
m->c_format=MSPFORMAT_2xFM;
/*start of FM identification process - FM_WAIT
wait at least 0.5s - used 1s - gives beter resolution*/
mpause(1000);
}
}
else {
if (standard==MSPSTANDARD_NICAM_L) {
m->c_format=MSPFORMAT_NICAM_AM;
/* set AM prescale */
SetMSP3430Data (m, WR_DSP, 0x00, 0x0e, 0x7C, 0);
}
else {
m->c_format=MSPFORMAT_NICAM_FM;
/* set FM prescale */
SetMSP3430Data (m, WR_DSP, 0x00, 0x0e, 0x30, 0);
}
/* set FM deemphasis*/
SetMSP3430Data (m, WR_DSP, 0x00, 0x0f, 0x00, 0);
/* set NICAM prescale to 0dB */
SetMSP3430Data (m, WR_DSP, 0x00, 0x10, 0x20, 0);
}
break;
} /*end - case conector*/
CheckModeMSP34x5D(m);
/* Set volume to FAST_MUTE. */
/*SetMSP3430Data(m, WR_DSP, 0x00, 0x00, 0xFF, 0x00);*/
/*set volume*/
MSP3430SetVolume(m,m->volume);
__MSPBEEP
} /* EnableMSP34x5D ()... */
void CheckModeMSP34x5D(MSP3430Ptr m) {
const char stereo_on=25;
const char stereo_off=20;
const char dual_on=-stereo_on;
const char dual_off=-stereo_off;
char detect;
CARD8 matrix, fmmatrix, source, high, low;
fmmatrix=0; /*no matrix*/
source=0; /*FM*/
switch (m->c_format) {
case MSPFORMAT_NICAM_FM:
case MSPFORMAT_NICAM_AM:
case MSPFORMAT_SCART:
source=( (m->c_format == MSPFORMAT_SCART)?2:1 );
switch (m->mode) {
case MSPMODE_MONO:
matrix=0x30; /*MONO*/
break;
case MSPMODE_A:
matrix=0x00; /*A*/
break;
case MSPMODE_B:
matrix=0x10; /*B*/
break;
default:
matrix=0x20; /*STEREO*/
break;
}
break;
default:
case MSPFORMAT_1xFM:
matrix=0x00; /*A*/
break;
case MSPFORMAT_2xFM:
switch (m->mode) {
case MSPMODE_MONO:
matrix=0x30; /*MONO*/
break;
case MSPMODE_STEREO:
matrix=0x20; /*STEREO*/
fmmatrix=((m->c_standard==MSPSTANDARD_FM_M)?2:1);
break;
case MSPMODE_AB:
matrix=0x20; /*STEREO*/
break;
case MSPMODE_A:
matrix=0x00; /*A*/
break;
case MSPMODE_B:
matrix=0x10; /*B*/
break;
default:
/*FM_IDENT_CHECK*/
GetMSP3430Data (m, RD_DSP, 0x00, 0x18, &high, &low);
detect=(char)high;
#if __MSPDEBUG__ > 1
xf86DrvMsg(m->d.pI2CBus->scrnIndex,X_INFO,"Stereo Detection Register: %d\n",detect);
#endif
if (detect>=((m->c_mode==MSPMODE_STEREO)?stereo_off:stereo_on)) {
m->c_mode=MSPMODE_STEREO;
matrix=0x20; /*STEREO*/
fmmatrix=((m->c_standard==MSPSTANDARD_FM_M)?2:1);
}
else if (detect<=((m->c_mode==MSPMODE_AB)?dual_off:dual_on)) {
m->c_mode=MSPMODE_AB;
switch (m->mode) {
case MSPMODE_STEREO_AB: matrix=0x20; break;
case MSPMODE_STEREO_B: matrix=0x10; break;
default:
case MSPMODE_A: matrix=0x00; break;
}
}
else {
m->c_mode=MSPMODE_MONO;
matrix=0x30; /*MONO*/
}
break;
} /* end - case mode*/
break;
}
if (m->c_fmmatrix != fmmatrix) {
GetMSP3430Data (m, RD_DSP, 0x00, 0x0e, &high, &low);
SetMSP3430Data (m, WR_DSP, 0x00, 0x0e, high, fmmatrix);
m->c_fmmatrix = fmmatrix;
}
if ((m->c_matrix != matrix) || (m->c_source != source)) {
/*set chanel source and matrix for loudspeaker*/
SetMSP3430Data (m, WR_DSP, 0x00, 0x08, source, matrix);
m->c_matrix = matrix;
m->c_source = source;
}
if ( ((m->c_format) & 0xF0) == MSPFORMAT_NICAM)
SetMSP3430Data (m, WR_DEM, 0x00, 0x21, 0, 1);
#if __MSPDEBUG__ > 0
char *msg;
switch (matrix) {
case 0x30: /*MONO*/
msg="MONO";
break;
case 0x00: /*LEFT*/
msg="MONO/CHANNEL_1";
break;
case 0x10: /*RIGHT*/
msg="MONO/CHANNEL_2";
break;
case 0x20: /*LEFT*/
msg="STEREO";
break;
default:
msg="unknown";
break;
}
xf86DrvMsg(m->d.pI2CBus->scrnIndex,X_INFO,"Audio mode set to: %s\n",msg);
#endif
}
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