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|
/****************************************************************************
*
* Copyright (c) 2004 - 2007 Winbond Electronics Corp. All rights reserved.
*
*
* FILENAME
* w90n745_I2S.c
*
* VERSION
* 1.0
*
* DESCRIPTION
* IIS for PCM3003E codec
*
* DATA STRUCTURES
* None
*
* FUNCTIONS
*
* HISTORY
* 2004.07.16 Created by Shih-Jen Lu
* 2005.11.24 Modified by PC34 QFu
*
* REMARK
* None
*
**************************************************************************/
#include <linux/soundcard.h>
#include <linux/delay.h>
#include <asm/io.h>
#include <asm/irq.h>
#include "w90n745_audio_regs.h"
#include "w90n745_audio.h"
#include "w90n745_i2s.h"
//#define I2S_DEBUG
//#define I2S_DEBUG_ENTER_LEAVE
//#define I2S_DEBUG_MSG
//#define I2S_DEBUG_MSG2
#ifdef I2S_DEBUG
#define DBG(fmt, arg...) printk(fmt, ##arg)
#else
#define DBG(fmt, arg...)
#endif
#ifdef I2S_DEBUG_ENTER_LEAVE
#define ENTER() DBG("[%-10s] : Enter\n", __FUNCTION__)
#define LEAVE() DBG("[%-10s] : Leave\n", __FUNCTION__)
#else
#define ENTER()
#define LEAVE()
#endif
#ifdef I2S_DEBUG_MSG
#define MSG(fmt) DBG("[%-10s] : "fmt, __FUNCTION__)
#else
#define MSG(fmt)
#endif
#ifdef I2S_DEBUG_MSG2
#define MSG2(fmt, arg...) DBG("[%-10s] : "fmt, __FUNCTION__, ##arg)
#else
#define MSG2(fmt, arg...)
#endif
static AUDIO_T _tIIS;
#define AUDIO_WRITE(addr, val) writel(val, addr)
#define AUDIO_READ(addr) readl(addr)
#define Delay(time) udelay(time * 10)
#define MSB_FORMAT 1
#define IIS_FORMAT 2
static int _bIISActive = 0;
static UINT32 _uIISCR = 0;
#define WMDEVID 0
#define UINT8 unsigned char
/*----- set data format -----*/
static void IIS_Set_Data_Format(int choose_format)
{
ENTER();
switch(choose_format){
case IIS_FORMAT: _uIISCR = _uIISCR | IIS;
break;
case MSB_FORMAT: _uIISCR = _uIISCR | MSB_Justified;
break;
default:break;
}
AUDIO_WRITE(REG_ACTL_IISCON,_uIISCR);
LEAVE();
}
/*----- set sample Frequency -----*/
static void IIS_Set_Sample_Frequency(int choose_sf)
{
ENTER();
switch (choose_sf)
{
case AU_SAMPLE_RATE_8000: //8KHz
_uIISCR = _uIISCR | FS_256 | SCALE_4 | BCLK_48;
break;
case AU_SAMPLE_RATE_11025: //11.025KHz
_uIISCR = _uIISCR | FS_256 | SCALE_4 | BCLK_48;
break;
case AU_SAMPLE_RATE_16000: //16KHz
_uIISCR = _uIISCR | FS_256 | SCALE_2 | BCLK_48;
break;
case AU_SAMPLE_RATE_22050: //22.05KHz
_uIISCR = _uIISCR | FS_256 | SCALE_3 | BCLK_32;
break;
case AU_SAMPLE_RATE_24000: //24KHz
_uIISCR = _uIISCR | FS_256 | SCALE_2 | BCLK_32;
break;
case AU_SAMPLE_RATE_32000: //32KHz
_uIISCR = _uIISCR | SCALE_1 | FS_256 | BCLK_48;
break;
case AU_SAMPLE_RATE_44100: //44.1KHz
_uIISCR = _uIISCR | SCALE_1 | FS_256 | BCLK_48;
break;
case AU_SAMPLE_RATE_48000: //48KHz
_uIISCR = _uIISCR | FS_256 | SCALE_1 | BCLK_32;
break;
default:break;
}
AUDIO_WRITE(REG_ACTL_IISCON,_uIISCR);
if(choose_sf == AU_SAMPLE_RATE_44100 || choose_sf ==AU_SAMPLE_RATE_22050 || choose_sf ==AU_SAMPLE_RATE_11025 ){
//outpw(REG_APLLCON, 0x642D);//16.934
//outpw(REG_CLKDIV0, (inpw(REG_CLKDIV0) & 0xFF0FFFFF) | 0x300000);
AUDIO_WRITE(0xfff00010, 0x2601);//PLLCON 390Mhz
AUDIO_WRITE(0xfff00014, 0x116);// divide by 23
}else
{
AUDIO_WRITE(0xfff00010, 0x2f01);//PLLCON 480Mhz
AUDIO_WRITE(0xfff00014, 0x126);// divide by 39
}
LEAVE();
}
static INT iis_reset(void)
{
ENTER();
AUDIO_WRITE(REG_CLKSEL, AUDIO_READ(REG_CLKSEL) | 0x10000);
AUDIO_WRITE(0xFFF83000,0x155);//GPIO_CFG0 PT0CFG0~4
AUDIO_WRITE(0xFFF83004,0x1d);//GPIO1:In GPIO0,2,3,4:Out
/* reset audio interface */
AUDIO_WRITE(REG_ACTL_RESET,AUDIO_READ(REG_ACTL_RESET) | ACTL_RESET_BIT);
Delay(100);
AUDIO_WRITE(REG_ACTL_RESET,AUDIO_READ(REG_ACTL_RESET) & ~ACTL_RESET_BIT);
Delay(100);
/* reset IIS interface */
AUDIO_WRITE(REG_ACTL_RESET,AUDIO_READ(REG_ACTL_RESET) | IIS_RESET);
Delay(100);
AUDIO_WRITE(REG_ACTL_RESET,AUDIO_READ(REG_ACTL_RESET) & ~IIS_RESET);
Delay(100);
/* enable audio controller and IIS interface */
AUDIO_WRITE(REG_ACTL_CON, AUDIO_READ (REG_ACTL_CON) | AUDCLK_EN | PFIFO_EN | DMA_EN | IIS_EN | AUDIO_EN | RFIFO_EN | T_DMA_IRQ | R_DMA_IRQ);
#if 0
/* use GPIO 17 18 19 as L3 interface control pin */
//writew(REG_GPIO_OE,readw(REG_GPIO_OE) & ~(1 << L3MODE_GPIO_NUM | 1<< L3CLOCK_GPIO_NUM | 1<< L3DATA_GPIO_NUM));
AUDIO_WRITE(REG_GPIO_CFG,AUDIO_READ(REG_GPIO_CFG) & ~(0x3F<<14));
AUDIO_WRITE(REG_GPIO_DIR,AUDIO_READ(REG_GPIO_DIR) | L3MODE_GPIO_NUM | L3CLOCK_GPIO_NUM | L3DATA_GPIO_NUM);
/* set volume, dsp power up and no de-emph.no mute of external codec, from L3 */
#endif
_uIISCR = 0;
LEAVE();
return 0;
}
VOID i2sSetPlaySampleRate(INT nSamplingRate)
{
_tIIS.nPlaySamplingRate = nSamplingRate;
}
VOID i2sSetRecordSampleRate(INT nSamplingRate)
{
_tIIS.nRecSamplingRate = nSamplingRate;
}
VOID i2sSetPlayCallBackFunction(AU_CB_FUN_T fnCallBack)
{
_tIIS.fnPlayCallBack = fnCallBack;
}
VOID i2sSetRecordCallBackFunction(AU_CB_FUN_T fnCallBack)
{
_tIIS.fnRecCallBack = fnCallBack;
}
/*************************************************************************/
/* */
/* FUNCTION */
/* i2sStartPlay */
/* */
/* DESCRIPTION */
/* Start IIS playback. */
/* */
/* INPUTS */
/* fnCallBack client program provided callback function. The audio */
/* driver will call back to get next block of PCM data */
/* nSamplingRate the playback sampling rate. Supported sampling */
/* rate are 48000, 44100, 32000, 24000, 22050, 16000, */
/* 11025, and 8000 Hz */
/* */
/* OUTPUTS */
/* None */
/* */
/* RETURN */
/* 0 Success */
/* Otherwise error */
/* */
/*************************************************************************/
static int i2sStartPlay(AU_CB_FUN_T fnCallBack, INT nSamplingRate,
INT nChannels)
{
INT nStatus /* ,L3status */;
ENTER();
if (_bIISActive & IIS_PLAY_ACTIVE){
MSG("IIS already playing\n");
return ERR_IIS_PLAY_ACTIVE; /* IIS was playing */
}
//printk("SamplingRate : %d Channels : %d\n", nSamplingRate, nChannels);
if (_bIISActive == 0)
{
AUDIO_WRITE(REG_ACTL_RESET, AUDIO_READ(REG_ACTL_RESET) & ~ PLAY_LEFT_CHNNEL & ~ PLAY_RIGHT_CHNNEL);
AUDIO_WRITE(REG_ACTL_RESET, AUDIO_READ(REG_ACTL_RESET) | PLAY_RIGHT_CHNNEL);
if (nChannels == AU_CH_STEREO)
AUDIO_WRITE(REG_ACTL_RESET, AUDIO_READ(REG_ACTL_RESET) | PLAY_LEFT_CHNNEL);
nStatus = iis_reset();
if (nStatus < 0)
return nStatus;
}
// enable_irq(AU_PLAY_INT_NUM);
Enable_Int(AU_PLAY_INT_NUM);
i2sSetPlayCallBackFunction(fnCallBack);
i2sSetPlaySampleRate(nSamplingRate);
#if 0
/* set play sampling rate and data format */
//L3status = L3_Set_Sample_Frequency(nSamplingRate);
//L3status = L3status | L3_Set_Data_Format(data_format);
//L3_Set_Data(EX_DAC_On);
//L3_Set_Status(L3status);
#endif
IIS_Set_Sample_Frequency(nSamplingRate);
IIS_Set_Data_Format(MSB_FORMAT);
/* set DMA play destination base address */
AUDIO_WRITE(REG_ACTL_PDSTB, _tIIS.uPlayBufferAddr);
/* set DMA play buffer length */
AUDIO_WRITE(REG_ACTL_PDST_LENGTH, _tIIS.uPlayBufferLength);
MSG2("DMA Buffer : %x, Length : %x\n", _tIIS.uPlayBufferAddr,_tIIS.uPlayBufferLength);
/* call back to fill DMA play buffer */
//_tIIS.fnPlayCallBack((UINT8 *)_tIIS.uDMABufferAddr, _tIIS.uDMABufferLength/2);
//_tIIS.fnPlayCallBack((UINT8 *)(_tIIS.uDMABufferAddr + _tIIS.uDMABufferLength/2),
// _tIIS.uDMABufferLength/2);
/* start playing */
MSG("IIS start playing...\n");
AUDIO_WRITE(REG_ACTL_PSR, 0x3);
AUDIO_WRITE(REG_ACTL_RESET, AUDIO_READ(REG_ACTL_RESET) | IIS_PLAY);
_bIISActive |= IIS_PLAY_ACTIVE;
LEAVE();
return 0;
}
/*************************************************************************/
/* */
/* FUNCTION */
/* i2sStopPlay */
/* */
/* DESCRIPTION */
/* Stop IIS playback immdediately. */
/* */
/* INPUTS */
/* None */
/* */
/* OUTPUTS */
/* None */
/* */
/* RETURN */
/* 0 Success */
/* Otherwise error */
/* */
/*************************************************************************/
static void i2sStopPlay(void)
{
ENTER();
AUDIO_WRITE(REG_ACTL_RESET, AUDIO_READ(REG_ACTL_RESET) & ~(PLAY_RIGHT_CHNNEL | PLAY_LEFT_CHNNEL));
if (!(_bIISActive & IIS_PLAY_ACTIVE))
return;
MSG("IIS stop playing\n");
/* stop playing */
while( AUDIO_READ(REG_ACTL_RESET) & IIS_PLAY )
AUDIO_WRITE(REG_ACTL_RESET, AUDIO_READ(REG_ACTL_RESET) & ~IIS_PLAY);
_bIISActive &= ~IIS_PLAY_ACTIVE;
/* disable audio play interrupt */
if (!_bIISActive)
Disable_Int(AU_PLAY_INT_NUM);
LEAVE();
return;
}
/*************************************************************************/
/* */
/* FUNCTION */
/* i2sStartRecord */
/* */
/* DESCRIPTION */
/* Start IIS record. */
/* */
/* INPUTS */
/* fnCallBack client program provided callback function. The audio */
/* driver will call back to deliver the newly recorded */
/* block of PCM data */
/* nSamplingRate the record sampling rate. Supported sampling */
/* rate are 48000, 44100, 32000, 24000, 22050, 16000, */
/* 11025, and 8000 Hz */
/* */
/* OUTPUTS */
/* None */
/* */
/* RETURN */
/* 0 Success */
/* Otherwise error */
/* */
/*************************************************************************/
static int i2sStartRecord(AU_CB_FUN_T fnCallBack, INT nSamplingRate,
INT nChannels)
{
INT nStatus /* ,L3status */;
ENTER();
if (_bIISActive & IIS_REC_ACTIVE)
return ERR_IIS_REC_ACTIVE; /* IIS was recording */
AUDIO_WRITE(REG_ACTL_RESET, AUDIO_READ(REG_ACTL_RESET) & ~(RECORD_LEFT_CHNNEL & RECORD_RIGHT_CHNNEL));
AUDIO_WRITE(REG_ACTL_RESET, AUDIO_READ(REG_ACTL_RESET) | RECORD_LEFT_CHNNEL);
if (nChannels != 1)
AUDIO_WRITE(REG_ACTL_RESET, AUDIO_READ(REG_ACTL_RESET) | RECORD_RIGHT_CHNNEL);
if (_bIISActive == 0)
{
nStatus = iis_reset();
if (nStatus < 0)
return nStatus;
}
Enable_Int(AU_REC_INT_NUM);
i2sSetRecordCallBackFunction(fnCallBack);
i2sSetRecordSampleRate(nSamplingRate);
#if 0
/* set record sampling rate and data format */
//L3status = L3_Set_Sample_Frequency(nSamplingRate);
//L3status = L3status | L3_Set_Data_Format(MSB_FORMAT);
//L3_Set_Data(EX_ADC_On);
//L3_Set_Status(L3status);
#endif
IIS_Set_Sample_Frequency(nSamplingRate);
IIS_Set_Data_Format(MSB_FORMAT);
/* set DMA record destination base address */
AUDIO_WRITE(REG_ACTL_RDSTB, _tIIS.uRecordBufferAddr);
/* set DMA record buffer length */
AUDIO_WRITE(REG_ACTL_RDST_LENGTH, _tIIS.uRecordBufferLength);
/* start recording */
MSG("IIS start recording...\n");
AUDIO_WRITE(REG_ACTL_RSR, 0x3);
AUDIO_WRITE(REG_ACTL_RESET, AUDIO_READ(REG_ACTL_RESET) | IIS_RECORD);
_bIISActive |= IIS_REC_ACTIVE;
LEAVE();
return 0;
}
/*************************************************************************/
/* */
/* FUNCTION */
/* i2sStopRecord */
/* */
/* DESCRIPTION */
/* Stop IIS record immediately. */
/* */
/* INPUTS */
/* None */
/* */
/* OUTPUTS */
/* None */
/* */
/* RETURN */
/* 0 Success */
/* Otherwise error */
/* */
/*************************************************************************/
static void i2sStopRecord(void)
{
ENTER();
AUDIO_WRITE(REG_ACTL_RESET, AUDIO_READ(REG_ACTL_RESET) & ~(RECORD_RIGHT_CHNNEL | RECORD_LEFT_CHNNEL));
if (!(_bIISActive & IIS_REC_ACTIVE))
return;
MSG("IIS stop recording\n");
/* stop recording */
AUDIO_WRITE(REG_ACTL_RESET, AUDIO_READ(REG_ACTL_RESET) & ~IIS_RECORD);
_bIISActive &= ~IIS_REC_ACTIVE;
/* disable audio record interrupt */
if (!_bIISActive)
Disable_Int(AU_PLAY_INT_NUM);
LEAVE();
return;
}
/*************************************************************************/
/* */
/* FUNCTION */
/* i2sSetPlayVolume */
/* */
/* DESCRIPTION */
/* Set i2S left and right channel play volume. */
/* */
/* INPUTS */
/* ucLeftVol play volume of left channel */
/* ucRightVol play volume of left channel */
/* 0: mute */
/* 1: minimal volume */
/* 31: maxmum volume */
/* */
/* OUTPUTS */
/* None */
/* */
/* RETURN */
/* 0 Success */
/* Otherwise error */
/* */
/*************************************************************************/
static int i2sSetPlayVolume(UINT32 ucLeftVol, UINT32 ucRightVol) //0~31
{
ENTER();
if (ucLeftVol>31)
ucLeftVol=31;
if (ucRightVol>31)
ucRightVol=31;
//printk("Set IIS Play volume to : %d-%d\n", ucLeftVol, ucRightVol);
_tIIS.sPlayVolume = 0x3F - ucLeftVol*2;
#if 0
/*----- Address Mode -----*/
L3_Address_Mode(EX_1345ADDR | EX_DATA);//set the DATA(volumn,de-emphasis, mute, and power control)
/*----- Data Transfer Mode -----*/
L3_Data_Transfer_Mode((UINT8)_tIIS.sPlayVolume);
#endif
LEAVE();
return 0;
}
static int i2sSetRecordVolume(UINT32 ucLeftVol, UINT32 ucRightVol)
{
ENTER();
LEAVE();
return 0;
}
static void i2sSetPlayBuffer(UINT32 uDMABufferAddr, UINT32 uDMABufferLength)
{
ENTER();
_tIIS.uPlayBufferAddr = uDMABufferAddr;
_tIIS.uPlayBufferLength = uDMABufferLength;
LEAVE();
}
static void i2sSetRecordBuffer(UINT32 uDMABufferAddr, UINT32 uDMABufferLength)
{
ENTER();
_tIIS.uRecordBufferAddr = uDMABufferAddr;
_tIIS.uRecordBufferLength = uDMABufferLength;
LEAVE();
}
static void iis_play_isr(void)
{
int bPlayLastBlock = 0;
ENTER();
MSG2("[DMA:S:%x,L:%x,C:%x]\n",
AUDIO_READ(REG_ACTL_PDSTB),
AUDIO_READ(REG_ACTL_PDST_LENGTH),
AUDIO_READ(REG_ACTL_PDSTC));
AUDIO_WRITE(REG_ACTL_CON, AUDIO_READ(REG_ACTL_CON) | T_DMA_IRQ);
if (AUDIO_READ(REG_ACTL_PSR) & P_DMA_MIDDLE_IRQ)
{
AUDIO_WRITE(REG_ACTL_PSR, P_DMA_MIDDLE_IRQ);
bPlayLastBlock = _tIIS.fnPlayCallBack(_tIIS.uPlayBufferAddr,
_tIIS.uPlayBufferLength/2);
}
else if (AUDIO_READ(REG_ACTL_PSR) & P_DMA_END_IRQ)
{
AUDIO_WRITE(REG_ACTL_PSR, P_DMA_END_IRQ);
bPlayLastBlock = _tIIS.fnPlayCallBack(_tIIS.uPlayBufferAddr + _tIIS.uPlayBufferLength/2,
_tIIS.uPlayBufferLength/2);
}
/* check whether the next block is ready. If not, stop play */
if (bPlayLastBlock)
{
AUDIO_WRITE(REG_ACTL_PSR, P_DMA_MIDDLE_IRQ | P_DMA_END_IRQ);
// i2sStopPlay();
}
LEAVE();
}
static void iis_rec_isr(void)
{
int bPlayLastBlock = 0;
ENTER();
AUDIO_WRITE(REG_ACTL_CON, AUDIO_READ(REG_ACTL_CON) | R_DMA_IRQ);
if (AUDIO_READ(REG_ACTL_RSR) & R_DMA_MIDDLE_IRQ)
{
AUDIO_WRITE(REG_ACTL_RSR, R_DMA_MIDDLE_IRQ);
bPlayLastBlock = _tIIS.fnRecCallBack(_tIIS.uRecordBufferAddr, _tIIS.uRecordBufferLength/2);
}
else if (AUDIO_READ(REG_ACTL_RSR) & R_DMA_END_IRQ)
{
AUDIO_WRITE(REG_ACTL_RSR, R_DMA_END_IRQ);
bPlayLastBlock = _tIIS.fnRecCallBack(_tIIS.uRecordBufferAddr + _tIIS.uRecordBufferLength/2,
_tIIS.uRecordBufferLength/2);
}
/* check whether the next block is token away. If not, stop record */
if (bPlayLastBlock)
{
AUDIO_WRITE(REG_ACTL_RSR, R_DMA_MIDDLE_IRQ | R_DMA_END_IRQ);
}
LEAVE();
}
INT i2sInit(VOID)
{
int nStatus = 0;
AUDIO_WRITE(REG_ACTL_RESET, AUDIO_READ(REG_ACTL_RESET) &~PLAY_LEFT_CHNNEL &~PLAY_RIGHT_CHNNEL);
AUDIO_WRITE(REG_ACTL_RESET, AUDIO_READ(REG_ACTL_RESET) &~RECORD_LEFT_CHNNEL &~RECORD_RIGHT_CHNNEL);
nStatus = iis_reset();
if (nStatus < 0)
return nStatus;
return 0;
}
static INT i2sGetCapacity(VOID)
{
return DSP_CAP_DUPLEX; /* support full duplex */
}
WB_AUDIO_CODEC_T wb_i2s_codec = {
dev: AU_DEV_IIS,
get_capacity: i2sGetCapacity,
set_play_buffer: i2sSetPlayBuffer,
set_record_buffer: i2sSetRecordBuffer,
reset: i2sInit,
start_play: i2sStartPlay,
stop_play: i2sStopPlay,
start_record: i2sStartRecord,
stop_record: i2sStopRecord,
set_play_volume: i2sSetPlayVolume,
set_record_volume: i2sSetRecordVolume, /* not supprted */
play_interrupt: iis_play_isr,
record_interrupt: iis_rec_isr,
};
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