evm5509_aic23_opencodec.c

dsp 5509a MMC 卡 ID号读取 12Mhzx16=192M

/*
 *  Copyright 2004 by Spectrum Digital Incorporated.
 *  All rights reserved. Property of Spectrum Digital Incorporated.
 */

/*
 *  ======== evm5509_aic23_openCodec.c ========
 *  EVM5509_AIC23_openCodec() implementation
 */

#include <csl.h>
#include <csl_mcbsp.h>
#include <csl_i2c.h>

#include <evm5509.h>
#include <evm5509_aic23.h>

/* AIC23 McBSP handles */
MCBSP_Handle EVM5509_AIC23_DATAHANDLE;

/*
 *  ======== EVM5509_AIC23_openCodec ========
 *  Open the codec and return a codec handle
 */
EVM5509_AIC23_CodecHandle EVM5509_AIC23_openCodec(int id, EVM5509_AIC23_Config *Config)
{
    MCBSP_Config mcbspCfgData = {
        0x0000,  /*  Serial Port Control Register 1   */
        0x0000,  /*  Serial Port Control Register 2   */
        0x0140,  /*  Receive Control Register 1   */
        0x0000,  /*  Receive Control Register 2   */
        0x0140,  /*  Transmit Control Register 1   */
        0x0000,  /*  Transmit Control Register 2   */
        0x0000,  /*  Sample Rate Generator Register 1   */
        0x0000,  /*  Sample Rate Generator Register 2   */
        0x0000,  /*  Multichannel Control Register 1   */
        0x0000,  /*  Multichannel Control Register 2   */
        0x0003,  /*  Pin Control Register   */
        0x0000,  /*  Receive Channel Enable Register Partition A   */
        0x0000,  /*  Receive Channel Enable Register Partition B   */
        0x0000,  /*  Receive Channel Enable Register Partition C   */
        0x0000,  /*  Receive Channel Enable Register Partition D   */
        0x0000,  /*  Receive Channel Enable Register Partition E   */
        0x0000,  /*  Receive Channel Enable Register Partition F   */
        0x0000,  /*  Receive Channel Enable Register Partition G   */
        0x0000,  /*  Receive Channel Enable Register Partition H   */
        0x0000,  /*  Transmit Channel Enable Register Partition A   */
        0x0000,  /*  Transmit Channel Enable Register Partition B   */
        0x0000,  /*  Transmit Channel Enable Register Partition C   */
        0x0000,  /*  Transmit Channel Enable Register Partition D   */
        0x0000,  /*  Transmit Channel Enable Register Partition E   */
        0x0000,  /*  Transmit Channel Enable Register Partition F   */
        0x0000,  /*  Transmit Channel Enable Register Partition G   */
        0x0000   /*  Transmit Channel Enable Register Partition H   */
    };

    /* Enable codec data path on board */
    EVM5509_rset(EVM5509_MISC, EVM5509_rget(EVM5509_MISC) | 1);

    /* Reset the AIC23 */
    EVM5509_AIC23_rset(0, EVM5509_AIC23_RESET, 0);
    
    /* Configure the rest of the AIC23 registers */
    EVM5509_AIC23_config(0, Config);
    
    /* Open codec data handle */
    EVM5509_AIC23_DATAHANDLE = MCBSP_open(MCBSP_PORT0, MCBSP_OPEN_RESET);
    if (EVM5509_AIC23_DATAHANDLE == INV)
        return (EVM5509_AIC23_CodecHandle)INV;
    
    /* Configure codec data McBSP */
    MCBSP_config(EVM5509_AIC23_DATAHANDLE, &mcbspCfgData);
    
    /* Clear any garbage from the codec data port */
    if (MCBSP_rrdy(EVM5509_AIC23_DATAHANDLE))
        MCBSP_read16(EVM5509_AIC23_DATAHANDLE);
    
    /* Start McBSP1 as the codec data channel */
    MCBSP_start(EVM5509_AIC23_DATAHANDLE, MCBSP_XMIT_START | MCBSP_RCV_START |
	MCBSP_SRGR_START | MCBSP_SRGR_FRAMESYNC, 1000);
    
    return (0);
}