dtv_ref3_audio.c

用于TM1300/PNX1300系列DSP（主要用于视频处理）的设备库的源码

/*
 * Copyright (c) 1995,1996,1997 by TriMedia Technologies. 
 *
 * +------------------------------------------------------------------+
 * | This software is furnished under a license and may only be used  |
 * | and copied in accordance with the terms and conditions of  such  |
 * | a license and with the inclusion of this copyright notice. This  |
 * | software or any other copies of this software may not be provided|
 * | or otherwise made available to any other person.  The ownership  |
 * | and title of this software is not transferred.                   |
 * |                                                                  |
 * | The information in this software is subject  to change without   |
 * | any  prior notice and should not be construed as a commitment by |
 * | TriMedia Technologies.                                           |
 * |                                                                  |
 * | this code and information is provided "as is" without any        |
 * | warranty of any kind, either expressed or implied, including but |
 * | not limited to the implied warranties of merchantability and/or  |
 * | fitness for any particular purpose.                              |
 * +------------------------------------------------------------------+
 *
 *  Module name              : dtv_ref3_audio.c    1.5
 *
 *  Last update              : 18:59:26 - 00/11/09
 *
 *  Description              :
 *
 *  Initialize and control routines for TM1 DTV 8 channel audio DAC.
 *  Designed to be called from TM Device Library's board support package
 *  This only contains Audio Out, since AI is handled by a daughter board
 *  (the NIM board).
 * 
 *  This audio module supports:
 *      stereo 16 bit
 *      all Four channel 16 bit modes
 *      Six channel 16 bit
 *      Eight channel 16 bit
 *      Six channel analog plus 2 channel IEC1937, in 8 ch format.
 *          (atfLinearPCM | atf1937), apfSevenDotOne16
 *
 *  Other modes return resonable errors.
 *
 *  Revision                 :
 *      
 *
 *
 */


/* TriMedia standard shared includes */
#include <tm1/tmAssert.h>
#include <tmlib/dprintf.h>
#include <tmlib/tmtypes.h>
#include <tm1/tmAOmmio.h>
#include <tm1/tmAImmio.h>
#include <tm1/tmIIC.h>
#include <tm1/tmProcessor.h>
#include <tm1/tmLibdevErr.h>

#include "tda1315.h"

#include "philips_dtv_ref3.h"
#include "dtv_ref3_audio.h"

/***********************************************************/
/* IIC Audio Out Expander description on REF3 (GOMAD) DTV Board (0x74)
    0:      L mode, DOut
    1:      L clock, DOut
    2:      L data, DOut
    3:      L strobe, DOut
    4:      Mute SPDIF TX
    5:      AOSD GATE
    6:      unused
    7:      unused
*/

/* Audio Mode is now control in FPGA
   address 0x104
  bit 0    AudioCh 0 0 = 2 ch, 1 = 4 ch,  
  bit 1    AudioCh 1 2 = 6 ch, 3 = 8 ch
  bit 2    AudioData 1 = 16bit, 0= 32bit(20bit)
  bit 3    Mute 0 = Mute, 1= unmute
  bit 4    AudioReset 0 = reset, 1= unreset
  bit 5    unused
  bit 6    unused
  bit 7    unused
  
    Mode                FPGA Reg4  bits
                        7654 3210
    2 Channels          xxxx xx00
    4 Channels          xxxx xx01
    6 Channels          xxxx xx10
    8 Channels          xxxx xx11
    16 bit              xxxx x1xx
    32 bit              xxxx x0xx
    Mute                xxxx 0xxx
    unMute              xxxx 1xxx
    Reset               xxx0 xxxx
    unReset             xxx1 xxxx
    
*/
/* AUDIO_MASTER_IIC_ADDRESS   SPDIF control
   address: 0x7A Audio master control
 bit 0  ACS0_M
 bit 1  ACS0_DATA
 bit 2  ACS1_M
 bit 3  ACS1_DATA
 bit 4  MUTE
 bit 5  DEMP
 bit 6  PWRDWN
 bit 7  unused
*/

    
#define __SET_OUTPUT_2_CHANS    0x00
#define __SET_OUTPUT_4_CHANS    0x01
#define __SET_OUTPUT_6_CHANS    0x02
#define __SET_OUTPUT_8_CHANS    0x03
#define __SET_OUTPUT_32_BITS    0x00 
#define __SET_OUTPUT_16_BITS    0x04
#define __SET_MUTE_BIT          0x08
#define __SET_RESET_BIT         0x10
#define REF3_OUTPUT_FPGA_AUDIOMODE_MASK 0x1F

/* FPGA Audio mode Status register */
static unsigned char fpgaAudioMode = 0;

#define __DOUBLE_CLOCK_MODES    (apfFiveDotOne32 | apfSevenDotOne32) 
    
#define _CHANNEL_STATUS_REGISTER   0
#define _CONTROL_REGISTER          2

static Char outputL3Regs[4] = {0x0, 0x0, 0x0, 0x0};

static l3Param_t outputL3Params = 
{
    l3ModeIIC,                   /* mode          */
    L3_IIC_EXPANDER_ADDRESS,     /* address       */
    TDA1315_L3_ADDRESS,          /* l3Address     */
    REF3_OUTPUT_L3_DATA,         /* l3Data        */
    REF3_OUTPUT_L3_MODE,         /* l3Mode        */
    REF3_OUTPUT_L3_CLOCK,        /* l3Clock       */
    REF3_OUTPUT_L3_STROBE,       /* usrPin0       */
    0,                           /* usrPin1       */
    0,                           /* usrPin2       */
    0,                           /* l3AddressAdd  */
    0,                           /* l3DataAdd     */
    0,                           /* l3ModeAdd     */
    0,                           /* l3ClockAdd    */
    0,                           /* usrPin0Add    */
    0,                           /* usrPin2Add    */
    0,                           /* usrPin3Add    */
    2,                           /* numberOfBytes */
    Null                         /* data          */
};


/* flag to indicate that the 32-bit mode is enabled */
static Bool     dtvRef3DoubleDDSEnable            = False;
static Float    dtvRef3CPUClock                   = 0.0;
static Bool     dtvRef3CPUisTM1100                = False;

static Bool     dtvRef3AoRunning                  = False;
static Bool     dtvRef3AoNeedToConfigureTDA1315   = False;

/*******************************************************/
extern tmLibdevErr_t dtv_ref3_AO_Init(boardAOParam_t * param)
{
    UInt                iicd;
    Float               val;
    pprocCapabilities_t procCap;
    Int                 err = TMLIBDEV_OK;
    unsigned char *pAudioRegAddr = (unsigned char *) FPGA_AUDIO_REG_ADDRESS;
#if 0
    param->maxSRate = 50000;    /* TDA 1305, 32KHz,44.1KHz,48KHz supported */
    param->minSRate = 20000;    
#endif
    /* Audio SPDIF output is enabled */
    iicd = 0xFF;
    iicd &= ~(SPDIF_MUTE | SPDIF_DEMP | SPDIF_PWRDWN);
    iicWriteReg(AUDIO_MASTER_IIC_ADDRESS, -1, iicd);
       
    /* get the clock frequency of the TriMedia CPU */       
    err = procGetCapabilities(&procCap);
    if (err) return err;
    
    dtvRef3CPUClock = (Float) procCap->cpuClockFrequency;
    
    if (procCap->deviceID == PROC_DEVICE_TM1100)
    {
        dtvRef3CPUisTM1100 = True;
    }
    
    /* reset the audio output peripheral */
    aoRESET();

    /* Set initial frequency to get AO into a stable state */
    val = param->sRate * 256.0; /* 256 * sampleRate */
    if (dtvRef3CPUisTM1100)
    {
        val = 0.5 + (477218588.0 * (val / dtvRef3CPUClock));    /* 2**32 / 9 */
        aoSetFREQ(((UInt) val) | 0x80000000);
    }
    else
    {
        val = 0.5 + (1431655765.0 * (val / dtvRef3CPUClock));    /* 2**32 / 3 */
        aoSetFREQ((UInt) val);
    }
    
    aoEnableSER_MASTER();
    microsleep(10); /* wait until AO unit stabalized */

    if (! (param->audioTypeFormat & DTV_REF3_SUPPORTED_AUDIO_OUT_TYPES) )
        return AIO_ERR_UNSUPPORTED_FORMAT;
    if (! (param->audioSubtypeFormat & DTV_REF3_SUPPORTED_AUDIO_OUT_SUBTYPES) )
        return AIO_ERR_UNSUPPORTED_FORMAT;

    if (param->audioSubtypeFormat & __DOUBLE_CLOCK_MODES)
    {
        dtvRef3DoubleDDSEnable = True;
    }
    
#ifdef __LITTLE_ENDIAN__
    aoEnableLITTLE_ENDIAN();
#else
    aoDisableLITTLE_ENDIAN();
#endif
    aoMsbFirst();
    aoStartRisingEdgeWS();  
    aoSampleRisingCLOCK_EDGE();     /* sample on rising edge */
    aoSetTRANS_MODE(3);             /* Set Audio output to Stereo 16 bits per channel */
    aoSetSSPOS(0);                  /* Left and right channel start at bit 0 */
    aoDisableSIGN_CONVERT();        /* Disable Sign Convert for MSB */
    aoEnableWS_PULSE();             /* word strobe in pulse mode */
    aoDisableTRANS_ENABLE();
    
    fpgaAudioMode &= ~REF3_OUTPUT_FPGA_AUDIOMODE_MASK;

    switch (param->audioSubtypeFormat) {
        case apfStereo16:               /* Two channel Audio */
        {   /* 64 * 4 * 1 = 256fs */
            DP(("stereo 16 bit\n"));
            fpgaAudioMode |= (__SET_OUTPUT_2_CHANS | __SET_OUTPUT_16_BITS);
            aoSetWSDIV(63);
            aoSetSCKDIV(3);
            aoSetSFDIV(0);
            aoSetLEFTPOS(16);
            aoSetRIGHTPOS(48);
            aoSetSIZE(param->size);
            if (param->audioTypeFormat & atf1937)
            {
                /* set tda1315 to transmit non-PCM data */
            }
            break;
        }
        case apfStereo32:               /* Two channel Audio, 32-bit */
        {   /* 32 * 4 * 2 = 256 fs */
            DP(("stereo 32 bit\n"));
            fpgaAudioMode |= (__SET_OUTPUT_2_CHANS | __SET_OUTPUT_32_BITS);
            aoSetWSDIV(31);
            aoSetSCKDIV(3);
            aoSetSFDIV(1);
#ifdef __LITTLE_ENDIAN__
            aoSetLEFTPOS(16);
            aoSetRIGHTPOS(0);
#else
            aoSetLEFTPOS(0);
            aoSetRIGHTPOS(16);
#endif