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Diffstat (limited to 'uClinux-2.4.20-uc1/drivers/sound/w90n745_ac97.c')
-rw-r--r--uClinux-2.4.20-uc1/drivers/sound/w90n745_ac97.c1674
1 files changed, 837 insertions, 837 deletions
diff --git a/uClinux-2.4.20-uc1/drivers/sound/w90n745_ac97.c b/uClinux-2.4.20-uc1/drivers/sound/w90n745_ac97.c
index fb58349..297c90e 100644
--- a/uClinux-2.4.20-uc1/drivers/sound/w90n745_ac97.c
+++ b/uClinux-2.4.20-uc1/drivers/sound/w90n745_ac97.c
@@ -1,837 +1,837 @@
-/****************************************************************************
- *
- * Copyright (c) 2004 - 2007 Winbond Electronics Corp. All rights reserved.
- *
- *
- * FILENAME
- * w90n745_AC97.c
- *
- * VERSION
- * 1.2
- *
- * DESCRIPTION
- * AC97 interface for W83972D codec
- *
- * DATA STRUCTURES
- * None
- *
- * FUNCTIONS
- * ...
- *
- * HISTORY
- * 2004.06.01 Created by Yung-Chang Huang
- * 2004.09.02 Ver 1.0 Modify for w90n745 coding standard
- * 2005.11.24 Ver 1.1 Modified for uCLinux Sound Driver by PC34 QFu
- * 2006.01.17 Ver 1.2 Modified for w90n745 Version B
- *
- * 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_ac97.h"
-
-//#define AC97_DEBUG
-//#define AC97_DEBUG_ENTER_LEAVE
-//#define AC97_DEBUG_MSG
-//#define AC97_DEBUG_MSG2
-
-#ifdef AC97_DEBUG
-#define DBG(fmt, arg...) printk(fmt, ##arg)
-#else
-#define DBG(fmt, arg...)
-#endif
-
-#ifdef AC97_DEBUG_ENTER_LEAVE
-#define ENTER() DBG("[%-10s] : Enter\n", __FUNCTION__)
-#define LEAVE() DBG("[%-10s] : Leave\n", __FUNCTION__)
-#else
-#define ENTER()
-#define LEAVE()
-#endif
-
-#ifdef AC97_DEBUG_MSG
-#define MSG(fmt) DBG("[%-10s] : "fmt, __FUNCTION__)
-#else
-#define MSG(fmt)
-#endif
-
-#ifdef AC97_DEBUG_MSG2
-#define MSG2(fmt, arg...) DBG("[%-10s] : "fmt, __FUNCTION__, ##arg)
-#else
-#define MSG2(fmt, arg...)
-#endif
-
-#define AUDIO_WRITE(addr, val) writel(val, addr)
-#define AUDIO_READ(addr) readl(addr)
-
-static AUDIO_T _tAC97;
-
-static int _bAC97Active = 0;
-static volatile int _bPlayDmaToggle, _bRecDmaToggle;
-
-static void ac97StopPlay(void);
-
-struct semaphore ac97_sem;
-
-static unsigned int ac97_read_register(INT nIdx)
-{
- volatile INT nWait;
- unsigned int i;
-
- down(&ac97_sem);
-
- /* set the R_WB bit and write register index */
- AUDIO_WRITE(REG_ACTL_ACOS1, 0x80 | nIdx);
-
- /* set the valid frame bit and valid slots */
- AUDIO_WRITE(REG_ACTL_ACOS0, AUDIO_READ(REG_ACTL_ACOS0) |0x11);
-
- udelay(100);
-
- /* polling the AC_R_FINISH */
- for (nWait = 0; nWait < 0x10000; nWait++)
- {
- if (AUDIO_READ(REG_ACTL_ACCON) & AC_R_FINISH)
- break;
- }
- if (nWait == 0x10000)
- MSG("ac97_read_register time out!\n");
-
- AUDIO_WRITE(REG_ACTL_ACOS0, AUDIO_READ(REG_ACTL_ACOS0) & ~1);
-
- if (AUDIO_READ(REG_ACTL_ACIS1) >> 2 != nIdx)
- { MSG2("ac97_read_register - R_INDEX of REG_ACTL_ACIS1 not match!, 0x%x\n", AUDIO_READ(REG_ACTL_ACIS1)); }
-
- udelay(100);
- i = AUDIO_READ(REG_ACTL_ACIS2) & 0xFFFF;
-
- up(&ac97_sem);
- return (i);
-}
-
-
-static int ac97_write_register(INT nIdx, UINT16 sValue)
-{
- volatile INT nWait;
-
- down(&ac97_sem);
-
- /* clear the R_WB bit and write register index */
- AUDIO_WRITE(REG_ACTL_ACOS1, nIdx);
-
- /* write register value */
- AUDIO_WRITE(REG_ACTL_ACOS2, (UINT32)sValue);
-
- /* set the valid frame bit and valid slots */
- AUDIO_WRITE(REG_ACTL_ACOS0, AUDIO_READ(REG_ACTL_ACOS0) | 0x13);
-
- udelay(100);
-
- /* polling the AC_W_FINISH */
- for (nWait = 0; nWait < 0x10000; nWait++)
- {
- if (!(AUDIO_READ(REG_ACTL_ACCON) & AC_W_FINISH))
- break;
- }
-
- AUDIO_WRITE(REG_ACTL_ACOS0, AUDIO_READ(REG_ACTL_ACOS0) & ~3);
-
- up(&ac97_sem);
-
-
- // paraniod?
- //if (ac97_read_register(nIdx) != sValue)
- // MSG2("ac97_write_register, nIdx=0x%x, mismatch, 0x%x must be 0x%x\n", nIdx, ac97_read_register(nIdx), sValue);
-
- return 0;
-}
-
-#if 0
-static void ac97_read_all_registers()
-{
- MSG("AC97_RESET = 0x%04x\n", ac97_read_register(AC97_RESET));
- MSG("AC97_MASTER_VOLUME = 0x%04x\n", ac97_read_register(AC97_MASTER_VOLUME));
- MSG("AC97_AUX_OUT_VOLUME = 0x%04x\n", ac97_read_register(AC97_AUX_OUT_VOLUME));
- MSG("AC97_MONO_VOLUME = 0x%04x\n", ac97_read_register(AC97_MONO_VOLUME));
- MSG("AC97_MASTER_TONE = 0x%04x\n", ac97_read_register(AC97_MASTER_TONE));
- MSG("AC97_PC_BEEP_VOLUME = 0x%04x\n", ac97_read_register(AC97_PC_BEEP_VOLUME));
- MSG("AC97_PHONE_VOLUME = 0x%04x\n", ac97_read_register(AC97_PHONE_VOLUME));
- MSG("AC97_MIC_VOLUME = 0x%04x\n", ac97_read_register(AC97_MIC_VOLUME));
- MSG("AC97_LINE_IN_VOLUME = 0x%04x\n", ac97_read_register(AC97_LINE_IN_VOLUME));
- MSG("AC97_CD_VOLUME = 0x%04x\n", ac97_read_register(AC97_CD_VOLUME));
- MSG("AC97_VIDEO_VOLUME = 0x%04x\n", ac97_read_register(AC97_VIDEO_VOLUME));
- MSG("AC97_AUX_IN_VOLUME = 0x%04x\n", ac97_read_register(AC97_AUX_IN_VOLUME));
- MSG("AC97_PCM_OUT_VOLUME = 0x%04x\n", ac97_read_register(AC97_PCM_OUT_VOLUME));
- MSG("AC97_RECORD_SELECT = 0x%04x\n", ac97_read_register(AC97_RECORD_SELECT));
- MSG("AC97_RECORD_GAIN = 0x%04x\n", ac97_read_register(AC97_RECORD_GAIN));
- MSG("AC97_RECORD_GAIN_MIC = 0x%04x\n", ac97_read_register(AC97_RECORD_GAIN_MIC));
- MSG("AC97_GENERAL_PURPOSE = 0x%04x\n", ac97_read_register(AC97_GENERAL_PURPOSE));
- MSG("AC97_3D_CONTROL = 0x%04x\n", ac97_read_register(AC97_3D_CONTROL));
- MSG("AC97_AUDIO_INT_PAGING = 0x%04x\n", ac97_read_register(AC97_AUDIO_INT_PAGING));
- MSG("AC97_POWERDOWN_CTRL = 0x%04x\n", ac97_read_register(AC97_POWERDOWN_CTRL));
- MSG("AC97_FRONT_DAC_RATE = 0x%04x\n", ac97_read_register(AC97_FRONT_DAC_RATE));
-}
-#endif
-
-static void ac97_play_isr(void)
-{
- int bPlayLastBlock;
-
- ENTER();
-
- if(!(AUDIO_READ(REG_ACTL_CON) & T_DMA_IRQ))
- return;
-
- AUDIO_WRITE(REG_ACTL_CON, AUDIO_READ(REG_ACTL_CON) | T_DMA_IRQ);
-
- if (_bPlayDmaToggle == 0)
- {
- if (AUDIO_READ(REG_ACTL_PSR) & P_DMA_MIDDLE_IRQ)
- AUDIO_WRITE(REG_ACTL_PSR, P_DMA_MIDDLE_IRQ);
- else
- MSG("ac97_play_isr - miss middle!\n");
-
- _bPlayDmaToggle = 1;
-
- bPlayLastBlock = _tAC97.fnPlayCallBack(_tAC97.uPlayBufferAddr,
- _tAC97.uPlayBufferLength/2);
- }
- else
- {
- if (AUDIO_READ(REG_ACTL_PSR) & P_DMA_END_IRQ)
- AUDIO_WRITE(REG_ACTL_PSR, P_DMA_END_IRQ);
- else
- MSG("ac97_play_isr - miss end!\n");
-
- _bPlayDmaToggle = 0;
-
- bPlayLastBlock = _tAC97.fnPlayCallBack(_tAC97.uPlayBufferAddr+ _tAC97.uPlayBufferLength/ 2,
- _tAC97.uPlayBufferLength/2);
- }
-
-
- /* here, we will check whether the next buffer is ready. If not, stop play. */
- if (bPlayLastBlock)
- AUDIO_WRITE(REG_ACTL_PSR, P_DMA_MIDDLE_IRQ | P_DMA_END_IRQ);
-
-
- LEAVE();
-
-}
-
-
-static void ac97_rec_isr(void)
-{
- int bPlayLastBlock;
-
- ENTER();
-
- if(!(AUDIO_READ(REG_ACTL_CON) & R_DMA_IRQ))
- return;
-
- AUDIO_WRITE(REG_ACTL_CON, AUDIO_READ(REG_ACTL_CON) | R_DMA_IRQ);
-
- if (_bRecDmaToggle == 0)
- {
- if (AUDIO_READ(REG_ACTL_RSR) & R_DMA_MIDDLE_IRQ)
- AUDIO_WRITE(REG_ACTL_RSR, R_DMA_MIDDLE_IRQ);
- else
- MSG("ac97_rec_isr - miss middle!\n");
-
- _bRecDmaToggle = 1;
- bPlayLastBlock = _tAC97.fnRecCallBack(_tAC97.uRecordBufferAddr,
- _tAC97.uRecordBufferLength/2);
- }
- else
- {
- if (AUDIO_READ(REG_ACTL_RSR) & R_DMA_END_IRQ)
- AUDIO_WRITE(REG_ACTL_RSR, R_DMA_END_IRQ);
- else
- MSG("ac97_rec_isr - miss end!\n");
-
- _bRecDmaToggle = 0;
- bPlayLastBlock = _tAC97.fnRecCallBack(_tAC97.uRecordBufferAddr + _tAC97.uRecordBufferLength / 2,
- _tAC97.uRecordBufferLength /2);
- }
-
- if (bPlayLastBlock)
- AUDIO_WRITE(REG_ACTL_RSR, R_DMA_MIDDLE_IRQ | R_DMA_END_IRQ);
-
- LEAVE();
-}
-
-static int ac97_reset(void)
-{
- ENTER();
-
- AUDIO_WRITE(REG_CLKSEL, AUDIO_READ(REG_CLKSEL) | 0x10000);
-
- AUDIO_WRITE(0xFFF83000,0x155);//GPIO_CFG0 PT0CFG0~4
- AUDIO_WRITE(0xFFF83004,0xd);//GPIO4,1:In GPIO0,2,3:Out
-
- //AUDIO_WRITE(REG_GPIOA_OE, (AUDIO_READ(REG_GPIOA_OE) & 0xFFFFC0FF) | 0x2700);
-
- /* disable pull-high/low */
- //AUDIO_WRITE(REG_GPIOA_PE, 0x3F00);
-
- udelay(1000);
-
- _tAC97.sPlayVolume = 0x0000;
- _tAC97.sRecVolume = 0x0000;
-
- /* enable audio controller and AC-link interface */
- AUDIO_WRITE(REG_ACTL_CON, IIS_AC_PIN_SEL | AUDIO_EN | ACLINK_EN | PFIFO_EN | RFIFO_EN | T_DMA_IRQ | R_DMA_IRQ | DMA_EN);
- udelay(1000);
-
- /* reset Audio Controller */
- AUDIO_WRITE(REG_ACTL_RESET, AUDIO_READ(REG_ACTL_RESET) | ACTL_RESET_BIT);
- udelay(1000);
- AUDIO_WRITE(REG_ACTL_RESET, AUDIO_READ(REG_ACTL_RESET) & ~ACTL_RESET_BIT);
- udelay(1000);
-
- /* reset AC-link interface */
- AUDIO_WRITE(REG_ACTL_RESET, AUDIO_READ(REG_ACTL_RESET) | AC_RESET);
- udelay(1000);
- AUDIO_WRITE(REG_ACTL_RESET, AUDIO_READ(REG_ACTL_RESET) & ~AC_RESET);
- udelay(1000);
-
-
- /* cold reset AC 97 */
- AUDIO_WRITE(REG_ACTL_ACCON, AUDIO_READ(REG_ACTL_ACCON) | AC_C_RES);
- udelay(1000);
- AUDIO_WRITE(REG_ACTL_ACCON, AUDIO_READ(REG_ACTL_ACCON) & ~AC_C_RES);
- udelay(1000);
-
-
- if (!(AUDIO_READ(REG_ACTL_ACIS0) & 0x10))
- {
- MSG("Error - AC97 codec ready was not set, cold reset failed!\n");
- return ERR_AC97_CODEC_RESET;
- }
-
- udelay(100);
- //ac97_read_all_registers();
-
- /* set volumes */
-
- ac97_write_register(AC97_MASTER_VOLUME, _tAC97.sPlayVolume);
-
- ac97_write_register(AC97_MONO_VOLUME, 0x000f);
- //ac97_write_register(AC97_MASTER_TONE, 0x0303);
- ac97_write_register(AC97_MIC_VOLUME, 0x8000);
- //ac97_write_register(AC97_LINE_IN_VOLUME, 0x0707);
- //ac97_write_register(AC97_AUX_IN_VOLUME, 0x0707);
- ac97_write_register(AC97_PCM_OUT_VOLUME, _tAC97.sPlayVolume);
-
- ac97_write_register(AC97_RECORD_SELECT, 0); /* record select MIC in */
- ac97_write_register(AC97_RECORD_GAIN, 0x0404);
- ac97_write_register(AC97_RECORD_GAIN_MIC, 0x0004);
- ac97_write_register(AC97_GENERAL_PURPOSE, 0);
-
- LEAVE();
-
- return 0;
-}
-
-static VOID ac97SetPlaySampleRate(INT nSamplingRate)
-{
- ENTER();
-
- /* set play sampling rate */
- if (nSamplingRate != 48000)
- {
- /* enable VRA and set sampling frequency */
- ac97_write_register(AC97_EXT_AUDIO_CTRL, ac97_read_register(AC97_EXT_AUDIO_CTRL)|0x1);
- ac97_write_register(AC97_FRONT_DAC_RATE, nSamplingRate);
- }
-
- _tAC97.nPlaySamplingRate = nSamplingRate;
-
- LEAVE();
-}
-
-static VOID ac97SetRecordSampleRate(INT nSamplingRate)
-{
- ENTER();
-
- /* set record sampling rate */
- if (nSamplingRate != 48000)
- {
- /* enable VRA and set sampling frequency */
- ac97_write_register(AC97_EXT_AUDIO_CTRL, ac97_read_register(AC97_EXT_AUDIO_CTRL)|0x1);
- ac97_write_register(AC97_LR_ADC_RATE, nSamplingRate);
- }
-
- _tAC97.nRecSamplingRate = nSamplingRate;
-
- LEAVE();
-}
-
-static VOID ac97SetPlayCallBackFunction(AU_CB_FUN_T fnCallBack)
-{
- ENTER();
-
- _tAC97.fnPlayCallBack = fnCallBack;
-
- LEAVE();
-}
-
-static VOID ac97SetRecordCallBackFunction(AU_CB_FUN_T fnCallBack)
-{
- ENTER();
-
- _tAC97.fnRecCallBack = fnCallBack;
-
- LEAVE();
-}
-
-
-
-/*************************************************************************/
-/* */
-/* FUNCTION */
-/* ac97SetPlayVolume */
-/* */
-/* DESCRIPTION */
-/* Set AC97 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 ac97SetPlayVolume(UINT32 ucLeftVol, UINT32 ucRightVol)
-{
- int nLData, nRData;
-
- ENTER();
-
- //MSG2("Set AC97 volume to : %d-%d\n", ucLeftVol, ucRightVol);
-
- if (ucLeftVol == 0)
- nLData = 0x80;
- else
- nLData = 31 - (ucLeftVol & 0x1f);
-
- if (ucRightVol == 0)
- nRData = 0x80;
- else
- nRData = 31 - (ucRightVol & 0x1f);
-
- _tAC97.sPlayVolume = (nLData << 8) | nRData;
- ac97_write_register(AC97_PCM_OUT_VOLUME, (nLData << 8) | nRData);
- //ac97_write_register(AC97_PCM_OUT_VOLUME, 0x101);
-
- if (ucLeftVol == 0)
- nLData = 0x80;
- else
- nLData = 62 - ucLeftVol*2;
-
- if (ucRightVol == 0)
- nRData = 0x80;
- else
- nRData = 62 - ucRightVol*2;
-
- ac97_write_register(AC97_AUX_OUT_VOLUME, (nLData << 8) | nRData);
- ac97_write_register(AC97_MASTER_VOLUME, (nLData << 8) | nRData);
-
- MSG2("AC97_MASTER_VOLUME = 0x%04x\r\n", ac97_read_register(AC97_MASTER_VOLUME));
- MSG2("AC97_AUX_OUT_VOLUME = 0x%04x\r\n", ac97_read_register(AC97_AUX_OUT_VOLUME));
- MSG2("AC97_PCM_OUT_VOLUME = 0x%04x\r\n", ac97_read_register(AC97_PCM_OUT_VOLUME));
-#if 0
- down(&ac97_sem);
- if (_bAC97Active & AC97_PLAY_ACTIVE)
- AUDIO_WRITE(REG_ACTL_ACOS0, 0x1f);
- else
- AUDIO_WRITE(REG_ACTL_ACOS0, 0);
- up(&ac97_sem);
-#endif
- LEAVE();
-
- return 0;
-}
-
-
-/*************************************************************************/
-/* */
-/* FUNCTION */
-/* ac97SetRecordVolume */
-/* */
-/* DESCRIPTION */
-/* Set AC97 left and right channel record volume. */
-/* */
-/* INPUTS */
-/* ucLeftVol record volume of left channel */
-/* ucRightVol record volume of left channel */
-/* 0: mute */
-/* 1: minimal volume */
-/* 31: maxmum volume */
-/* */
-/* OUTPUTS */
-/* None */
-/* */
-/* RETURN */
-/* 0 Success */
-/* Otherwise error */
-/* */
-/*************************************************************************/
-static int ac97SetRecordVolume(UINT32 ucLeftVol, UINT32 ucRightVol)
-{
- //INT nStatus;
-
- ENTER();
-
- if (ucLeftVol == 0)
- ucLeftVol = 0x80;
- else
- ucLeftVol = 32 - (ucLeftVol & 0x1f);
-
- if (ucRightVol == 0)
- ucRightVol = 0x80;
- else
- ucRightVol = 32 - (ucRightVol & 0x1f);
-
- _tAC97.sRecVolume = (ucLeftVol << 8) | ucRightVol;
-
- ac97_write_register(AC97_MIC_VOLUME, ucRightVol );
-
- //ac97_read_all_registers();
- LEAVE();
-
- return 0;
-}
-
-
-/*************************************************************************/
-/* */
-/* FUNCTION */
-/* ac97StartPlay */
-/* */
-/* DESCRIPTION */
-/* Start AC97 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 */
-/* nChannels number of playback nChannels */
-/* 1: single channel, otherwise: double nChannels */
-/* */
-/* OUTPUTS */
-/* None */
-/* */
-/* RETURN */
-/* 0 Success */
-/* Otherwise error */
-/* */
-/*************************************************************************/
-static int ac97StartPlay(AU_CB_FUN_T fnCallBack, INT nSamplingRate, INT nChannels)
-{
- INT nStatus;
-
- ENTER();
-
- if (_bAC97Active & AC97_PLAY_ACTIVE)
- return ERR_AC97_PLAY_ACTIVE; /* AC97 was playing */
-
-
- if (_bAC97Active == 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 != 1)
- AUDIO_WRITE(REG_ACTL_RESET, AUDIO_READ(REG_ACTL_RESET) | PLAY_LEFT_CHNNEL);
-
- nStatus = ac97_reset();
- if (nStatus < 0)
- return nStatus;
- }
-
- /* disable by Qfu , for the installation of irq has been done in wb_audio.c
- the only thing to do is to enable irq by this routine */
- Enable_Int(AU_PLAY_INT_NUM);
-
- /* set play sampling rate */
- ac97SetPlaySampleRate(nSamplingRate);
- ac97SetPlayCallBackFunction(fnCallBack);
-
- /* set DMA play destination base address */
- AUDIO_WRITE(REG_ACTL_PDSTB, _tAC97.uPlayBufferAddr);
-
- /* set DMA play buffer length */
- AUDIO_WRITE(REG_ACTL_PDST_LENGTH, _tAC97.uPlayBufferLength);
-
- /* start playing */
- MSG("AC97 start playing...\n");
- _bPlayDmaToggle = 0;
- down(&ac97_sem);
- AUDIO_WRITE(REG_ACTL_ACOS0, AUDIO_READ(REG_ACTL_ACOS0) | 0x1C);
- up(&ac97_sem);
- AUDIO_WRITE(REG_ACTL_PSR, 0x3);
- AUDIO_WRITE(REG_ACTL_RESET, AUDIO_READ(REG_ACTL_RESET) | AC_PLAY);
- _bAC97Active |= AC97_PLAY_ACTIVE;
-
- LEAVE();
-
- return 0;
-}
-
-
-/*************************************************************************/
-/* */
-/* FUNCTION */
-/* ac97StopPlay */
-/* */
-/* DESCRIPTION */
-/* Stop AC97 playback immdediately. */
-/* */
-/* INPUTS */
-/* None */
-/* */
-/* OUTPUTS */
-/* None */
-/* */
-/* RETURN */
-/* 0 Success */
-/* Otherwise error */
-/* */
-/*************************************************************************/
-static void ac97StopPlay(void)
-{
- ENTER();
-
- AUDIO_WRITE(REG_ACTL_RESET, AUDIO_READ(REG_ACTL_RESET) & ~(PLAY_RIGHT_CHNNEL | PLAY_LEFT_CHNNEL));
-
- if (!(_bAC97Active & AC97_PLAY_ACTIVE))
- return;
-
-
- //ac97_read_all_registers ();
-
- /* stop playing */
- AUDIO_WRITE(REG_ACTL_RESET, AUDIO_READ(REG_ACTL_RESET) & ~AC_PLAY);
-
- down(&ac97_sem);
- AUDIO_WRITE(REG_ACTL_ACOS0, AUDIO_READ(REG_ACTL_ACOS0) & ~0xC);
- up(&ac97_sem);
-
-
- _bAC97Active &= ~AC97_PLAY_ACTIVE;
- /* disable audio play interrupt */
- if (!_bAC97Active)
- Disable_Int(AU_PLAY_INT_NUM);
-
-
- LEAVE();
-
- return;
-}
-
-
-/*************************************************************************/
-/* */
-/* FUNCTION */
-/* ac97StartRecord */
-/* */
-/* DESCRIPTION */
-/* Start AC97 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 */
-/* nChannels number of record nChannels */
-/* 1: single channel, otherwise: double nChannels */
-/* */
-/* OUTPUTS */
-/* None */
-/* */
-/* RETURN */
-/* 0 Success */
-/* Otherwise error */
-/* */
-/*************************************************************************/
-static int ac97StartRecord(AU_CB_FUN_T fnCallBack, INT nSamplingRate, INT nChannels)
-{
- INT nStatus;
- unsigned int i;
-
- ENTER();
-
- if (_bAC97Active & AC97_REC_ACTIVE)
- return ERR_AC97_REC_ACTIVE; /* AC97 was recording */
-
- if (_bAC97Active == 0)
- {
-
- nStatus = ac97_reset();
- if (nStatus < 0)
- return nStatus;
- }
-
-
- AUDIO_WRITE(REG_ACTL_RESET, AUDIO_READ(REG_ACTL_RESET) &~RECORD_RIGHT_CHNNEL &~RECORD_LEFT_CHNNEL);
-
- AUDIO_WRITE(REG_ACTL_RESET, AUDIO_READ(REG_ACTL_RESET) | RECORD_RIGHT_CHNNEL);
- if (nChannels != 1) {
-
- AUDIO_WRITE(REG_ACTL_RESET, AUDIO_READ(REG_ACTL_RESET) | RECORD_LEFT_CHNNEL);
- }
-
-
-
-
- /* enable AC97 record interrupt */
- Enable_Int(AU_REC_INT_NUM);
-
-
-
- /* set record sampling rate */
- ac97SetRecordSampleRate(nSamplingRate);
- ac97SetRecordCallBackFunction(fnCallBack);
-
-
- /* set DMA record destination base address */
- AUDIO_WRITE(REG_ACTL_RDSTB, _tAC97.uRecordBufferAddr);
-
- /* set DMA record buffer length */
- AUDIO_WRITE(REG_ACTL_RDST_LENGTH, _tAC97.uRecordBufferLength);
-
- /* start recording */
- MSG("AC97 start recording...\n");
- _bRecDmaToggle = 0;
- AUDIO_WRITE(REG_ACTL_RSR, 0x3);
- AUDIO_WRITE(REG_ACTL_RESET, AUDIO_READ(REG_ACTL_RESET) | AC_RECORD);
- _bAC97Active |= AC97_REC_ACTIVE;
-
- LEAVE();
-
- return 0;
-}
-
-
-/*************************************************************************/
-/* */
-/* FUNCTION */
-/* ac97StopRecord */
-/* */
-/* DESCRIPTION */
-/* Stop AC97 record immediately. */
-/* */
-/* INPUTS */
-/* None */
-/* */
-/* OUTPUTS */
-/* None */
-/* */
-/* RETURN */
-/* 0 Success */
-/* Otherwise error */
-/* */
-/*************************************************************************/
-static void ac97StopRecord(void)
-{
- ENTER();
-
- AUDIO_WRITE(REG_ACTL_RESET, AUDIO_READ(REG_ACTL_RESET) & ~(RECORD_RIGHT_CHNNEL | RECORD_LEFT_CHNNEL));
-
- if (!(_bAC97Active & AC97_REC_ACTIVE))
- return;
-
- //ac97_read_all_registers ();
- /* stop recording */
- AUDIO_WRITE(REG_ACTL_RESET, AUDIO_READ(REG_ACTL_RESET) & ~AC_RECORD);
-
- _bAC97Active &= ~AC97_REC_ACTIVE;
- /* disable audio record interrupt */
- if (!_bAC97Active)
- Disable_Int(AU_PLAY_INT_NUM);
-
-
- LEAVE();
-
- return;
-}
-
-static void ac97SetPlayBuffer(UINT32 uDMABufferAddr, UINT32 uDMABufferLength)
-{
- ENTER();
-
- _tAC97.uPlayBufferAddr = uDMABufferAddr;
- _tAC97.uPlayBufferLength = uDMABufferLength;
-
- LEAVE();
-}
-
-static void ac97SetRecordBuffer(UINT32 uDMABufferAddr, UINT32 uDMABufferLength)
-{
- ENTER();
-
- _tAC97.uRecordBufferAddr = uDMABufferAddr;
- _tAC97.uRecordBufferLength = uDMABufferLength;
-
- LEAVE();
-}
-
-
-static INT ac97Init(VOID)
-{
- int nStatus = 0;
-
- ENTER();
-
- 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 = ac97_reset();
- if (nStatus < 0)
- return nStatus;
-
- LEAVE();
-
- return 0;
-}
-
-static INT ac97GetCapacity(VOID)
-{
- return DSP_CAP_DUPLEX; /* support full duplex */
-}
-
-WB_AUDIO_CODEC_T wb_ac97_codec = {
- dev: AU_DEV_AC97,
- get_capacity: ac97GetCapacity,
- set_play_buffer: ac97SetPlayBuffer,
- set_record_buffer: ac97SetRecordBuffer,
- reset: ac97Init,
- start_play: ac97StartPlay,
- stop_play: ac97StopPlay,
- start_record: ac97StartRecord,
- stop_record: ac97StopRecord,
- set_play_volume: ac97SetPlayVolume,
- set_record_volume: ac97SetRecordVolume,
- play_interrupt: ac97_play_isr,
- record_interrupt: ac97_rec_isr,
-};
+/****************************************************************************
+ *
+ * Copyright (c) 2004 - 2007 Winbond Electronics Corp. All rights reserved.
+ *
+ *
+ * FILENAME
+ * w90n745_AC97.c
+ *
+ * VERSION
+ * 1.2
+ *
+ * DESCRIPTION
+ * AC97 interface for W83972D codec
+ *
+ * DATA STRUCTURES
+ * None
+ *
+ * FUNCTIONS
+ * ...
+ *
+ * HISTORY
+ * 2004.06.01 Created by Yung-Chang Huang
+ * 2004.09.02 Ver 1.0 Modify for w90n745 coding standard
+ * 2005.11.24 Ver 1.1 Modified for uCLinux Sound Driver by PC34 QFu
+ * 2006.01.17 Ver 1.2 Modified for w90n745 Version B
+ *
+ * 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_ac97.h"
+
+//#define AC97_DEBUG
+//#define AC97_DEBUG_ENTER_LEAVE
+//#define AC97_DEBUG_MSG
+//#define AC97_DEBUG_MSG2
+
+#ifdef AC97_DEBUG
+#define DBG(fmt, arg...) printk(fmt, ##arg)
+#else
+#define DBG(fmt, arg...)
+#endif
+
+#ifdef AC97_DEBUG_ENTER_LEAVE
+#define ENTER() DBG("[%-10s] : Enter\n", __FUNCTION__)
+#define LEAVE() DBG("[%-10s] : Leave\n", __FUNCTION__)
+#else
+#define ENTER()
+#define LEAVE()
+#endif
+
+#ifdef AC97_DEBUG_MSG
+#define MSG(fmt) DBG("[%-10s] : "fmt, __FUNCTION__)
+#else
+#define MSG(fmt)
+#endif
+
+#ifdef AC97_DEBUG_MSG2
+#define MSG2(fmt, arg...) DBG("[%-10s] : "fmt, __FUNCTION__, ##arg)
+#else
+#define MSG2(fmt, arg...)
+#endif
+
+#define AUDIO_WRITE(addr, val) writel(val, addr)
+#define AUDIO_READ(addr) readl(addr)
+
+static AUDIO_T _tAC97;
+
+static int _bAC97Active = 0;
+static volatile int _bPlayDmaToggle, _bRecDmaToggle;
+
+static void ac97StopPlay(void);
+
+struct semaphore ac97_sem;
+
+static unsigned int ac97_read_register(INT nIdx)
+{
+ volatile INT nWait;
+ unsigned int i;
+
+ down(&ac97_sem);
+
+ /* set the R_WB bit and write register index */
+ AUDIO_WRITE(REG_ACTL_ACOS1, 0x80 | nIdx);
+
+ /* set the valid frame bit and valid slots */
+ AUDIO_WRITE(REG_ACTL_ACOS0, AUDIO_READ(REG_ACTL_ACOS0) |0x11);
+
+ udelay(100);
+
+ /* polling the AC_R_FINISH */
+ for (nWait = 0; nWait < 0x10000; nWait++)
+ {
+ if (AUDIO_READ(REG_ACTL_ACCON) & AC_R_FINISH)
+ break;
+ }
+ if (nWait == 0x10000)
+ MSG("ac97_read_register time out!\n");
+
+ AUDIO_WRITE(REG_ACTL_ACOS0, AUDIO_READ(REG_ACTL_ACOS0) & ~1);
+
+ if (AUDIO_READ(REG_ACTL_ACIS1) >> 2 != nIdx)
+ { MSG2("ac97_read_register - R_INDEX of REG_ACTL_ACIS1 not match!, 0x%x\n", AUDIO_READ(REG_ACTL_ACIS1)); }
+
+ udelay(100);
+ i = AUDIO_READ(REG_ACTL_ACIS2) & 0xFFFF;
+
+ up(&ac97_sem);
+ return (i);
+}
+
+
+static int ac97_write_register(INT nIdx, UINT16 sValue)
+{
+ volatile INT nWait;
+
+ down(&ac97_sem);
+
+ /* clear the R_WB bit and write register index */
+ AUDIO_WRITE(REG_ACTL_ACOS1, nIdx);
+
+ /* write register value */
+ AUDIO_WRITE(REG_ACTL_ACOS2, (UINT32)sValue);
+
+ /* set the valid frame bit and valid slots */
+ AUDIO_WRITE(REG_ACTL_ACOS0, AUDIO_READ(REG_ACTL_ACOS0) | 0x13);
+
+ udelay(100);
+
+ /* polling the AC_W_FINISH */
+ for (nWait = 0; nWait < 0x10000; nWait++)
+ {
+ if (!(AUDIO_READ(REG_ACTL_ACCON) & AC_W_FINISH))
+ break;
+ }
+
+ AUDIO_WRITE(REG_ACTL_ACOS0, AUDIO_READ(REG_ACTL_ACOS0) & ~3);
+
+ up(&ac97_sem);
+
+
+ // paraniod?
+ //if (ac97_read_register(nIdx) != sValue)
+ // MSG2("ac97_write_register, nIdx=0x%x, mismatch, 0x%x must be 0x%x\n", nIdx, ac97_read_register(nIdx), sValue);
+
+ return 0;
+}
+
+#if 0
+static void ac97_read_all_registers()
+{
+ MSG("AC97_RESET = 0x%04x\n", ac97_read_register(AC97_RESET));
+ MSG("AC97_MASTER_VOLUME = 0x%04x\n", ac97_read_register(AC97_MASTER_VOLUME));
+ MSG("AC97_AUX_OUT_VOLUME = 0x%04x\n", ac97_read_register(AC97_AUX_OUT_VOLUME));
+ MSG("AC97_MONO_VOLUME = 0x%04x\n", ac97_read_register(AC97_MONO_VOLUME));
+ MSG("AC97_MASTER_TONE = 0x%04x\n", ac97_read_register(AC97_MASTER_TONE));
+ MSG("AC97_PC_BEEP_VOLUME = 0x%04x\n", ac97_read_register(AC97_PC_BEEP_VOLUME));
+ MSG("AC97_PHONE_VOLUME = 0x%04x\n", ac97_read_register(AC97_PHONE_VOLUME));
+ MSG("AC97_MIC_VOLUME = 0x%04x\n", ac97_read_register(AC97_MIC_VOLUME));
+ MSG("AC97_LINE_IN_VOLUME = 0x%04x\n", ac97_read_register(AC97_LINE_IN_VOLUME));
+ MSG("AC97_CD_VOLUME = 0x%04x\n", ac97_read_register(AC97_CD_VOLUME));
+ MSG("AC97_VIDEO_VOLUME = 0x%04x\n", ac97_read_register(AC97_VIDEO_VOLUME));
+ MSG("AC97_AUX_IN_VOLUME = 0x%04x\n", ac97_read_register(AC97_AUX_IN_VOLUME));
+ MSG("AC97_PCM_OUT_VOLUME = 0x%04x\n", ac97_read_register(AC97_PCM_OUT_VOLUME));
+ MSG("AC97_RECORD_SELECT = 0x%04x\n", ac97_read_register(AC97_RECORD_SELECT));
+ MSG("AC97_RECORD_GAIN = 0x%04x\n", ac97_read_register(AC97_RECORD_GAIN));
+ MSG("AC97_RECORD_GAIN_MIC = 0x%04x\n", ac97_read_register(AC97_RECORD_GAIN_MIC));
+ MSG("AC97_GENERAL_PURPOSE = 0x%04x\n", ac97_read_register(AC97_GENERAL_PURPOSE));
+ MSG("AC97_3D_CONTROL = 0x%04x\n", ac97_read_register(AC97_3D_CONTROL));
+ MSG("AC97_AUDIO_INT_PAGING = 0x%04x\n", ac97_read_register(AC97_AUDIO_INT_PAGING));
+ MSG("AC97_POWERDOWN_CTRL = 0x%04x\n", ac97_read_register(AC97_POWERDOWN_CTRL));
+ MSG("AC97_FRONT_DAC_RATE = 0x%04x\n", ac97_read_register(AC97_FRONT_DAC_RATE));
+}
+#endif
+
+static void ac97_play_isr(void)
+{
+ int bPlayLastBlock;
+
+ ENTER();
+
+ if(!(AUDIO_READ(REG_ACTL_CON) & T_DMA_IRQ))
+ return;
+
+ AUDIO_WRITE(REG_ACTL_CON, AUDIO_READ(REG_ACTL_CON) | T_DMA_IRQ);
+
+ if (_bPlayDmaToggle == 0)
+ {
+ if (AUDIO_READ(REG_ACTL_PSR) & P_DMA_MIDDLE_IRQ)
+ AUDIO_WRITE(REG_ACTL_PSR, P_DMA_MIDDLE_IRQ);
+ else
+ MSG("ac97_play_isr - miss middle!\n");
+
+ _bPlayDmaToggle = 1;
+
+ bPlayLastBlock = _tAC97.fnPlayCallBack(_tAC97.uPlayBufferAddr,
+ _tAC97.uPlayBufferLength/2);
+ }
+ else
+ {
+ if (AUDIO_READ(REG_ACTL_PSR) & P_DMA_END_IRQ)
+ AUDIO_WRITE(REG_ACTL_PSR, P_DMA_END_IRQ);
+ else
+ MSG("ac97_play_isr - miss end!\n");
+
+ _bPlayDmaToggle = 0;
+
+ bPlayLastBlock = _tAC97.fnPlayCallBack(_tAC97.uPlayBufferAddr+ _tAC97.uPlayBufferLength/ 2,
+ _tAC97.uPlayBufferLength/2);
+ }
+
+
+ /* here, we will check whether the next buffer is ready. If not, stop play. */
+ if (bPlayLastBlock)
+ AUDIO_WRITE(REG_ACTL_PSR, P_DMA_MIDDLE_IRQ | P_DMA_END_IRQ);
+
+
+ LEAVE();
+
+}
+
+
+static void ac97_rec_isr(void)
+{
+ int bPlayLastBlock;
+
+ ENTER();
+
+ if(!(AUDIO_READ(REG_ACTL_CON) & R_DMA_IRQ))
+ return;
+
+ AUDIO_WRITE(REG_ACTL_CON, AUDIO_READ(REG_ACTL_CON) | R_DMA_IRQ);
+
+ if (_bRecDmaToggle == 0)
+ {
+ if (AUDIO_READ(REG_ACTL_RSR) & R_DMA_MIDDLE_IRQ)
+ AUDIO_WRITE(REG_ACTL_RSR, R_DMA_MIDDLE_IRQ);
+ else
+ MSG("ac97_rec_isr - miss middle!\n");
+
+ _bRecDmaToggle = 1;
+ bPlayLastBlock = _tAC97.fnRecCallBack(_tAC97.uRecordBufferAddr,
+ _tAC97.uRecordBufferLength/2);
+ }
+ else
+ {
+ if (AUDIO_READ(REG_ACTL_RSR) & R_DMA_END_IRQ)
+ AUDIO_WRITE(REG_ACTL_RSR, R_DMA_END_IRQ);
+ else
+ MSG("ac97_rec_isr - miss end!\n");
+
+ _bRecDmaToggle = 0;
+ bPlayLastBlock = _tAC97.fnRecCallBack(_tAC97.uRecordBufferAddr + _tAC97.uRecordBufferLength / 2,
+ _tAC97.uRecordBufferLength /2);
+ }
+
+ if (bPlayLastBlock)
+ AUDIO_WRITE(REG_ACTL_RSR, R_DMA_MIDDLE_IRQ | R_DMA_END_IRQ);
+
+ LEAVE();
+}
+
+static int ac97_reset(void)
+{
+ ENTER();
+
+ AUDIO_WRITE(REG_CLKSEL, AUDIO_READ(REG_CLKSEL) | 0x10000);
+
+ AUDIO_WRITE(0xFFF83000,0x155);//GPIO_CFG0 PT0CFG0~4
+ AUDIO_WRITE(0xFFF83004,0xd);//GPIO4,1:In GPIO0,2,3:Out
+
+ //AUDIO_WRITE(REG_GPIOA_OE, (AUDIO_READ(REG_GPIOA_OE) & 0xFFFFC0FF) | 0x2700);
+
+ /* disable pull-high/low */
+ //AUDIO_WRITE(REG_GPIOA_PE, 0x3F00);
+
+ udelay(1000);
+
+ _tAC97.sPlayVolume = 0x0000;
+ _tAC97.sRecVolume = 0x0000;
+
+ /* enable audio controller and AC-link interface */
+ AUDIO_WRITE(REG_ACTL_CON, IIS_AC_PIN_SEL | AUDIO_EN | ACLINK_EN | PFIFO_EN | RFIFO_EN | T_DMA_IRQ | R_DMA_IRQ | DMA_EN);
+ udelay(1000);
+
+ /* reset Audio Controller */
+ AUDIO_WRITE(REG_ACTL_RESET, AUDIO_READ(REG_ACTL_RESET) | ACTL_RESET_BIT);
+ udelay(1000);
+ AUDIO_WRITE(REG_ACTL_RESET, AUDIO_READ(REG_ACTL_RESET) & ~ACTL_RESET_BIT);
+ udelay(1000);
+
+ /* reset AC-link interface */
+ AUDIO_WRITE(REG_ACTL_RESET, AUDIO_READ(REG_ACTL_RESET) | AC_RESET);
+ udelay(1000);
+ AUDIO_WRITE(REG_ACTL_RESET, AUDIO_READ(REG_ACTL_RESET) & ~AC_RESET);
+ udelay(1000);
+
+
+ /* cold reset AC 97 */
+ AUDIO_WRITE(REG_ACTL_ACCON, AUDIO_READ(REG_ACTL_ACCON) | AC_C_RES);
+ udelay(1000);
+ AUDIO_WRITE(REG_ACTL_ACCON, AUDIO_READ(REG_ACTL_ACCON) & ~AC_C_RES);
+ udelay(1000);
+
+
+ if (!(AUDIO_READ(REG_ACTL_ACIS0) & 0x10))
+ {
+ MSG("Error - AC97 codec ready was not set, cold reset failed!\n");
+ return ERR_AC97_CODEC_RESET;
+ }
+
+ udelay(100);
+ //ac97_read_all_registers();
+
+ /* set volumes */
+
+ ac97_write_register(AC97_MASTER_VOLUME, _tAC97.sPlayVolume);
+
+ ac97_write_register(AC97_MONO_VOLUME, 0x000f);
+ //ac97_write_register(AC97_MASTER_TONE, 0x0303);
+ ac97_write_register(AC97_MIC_VOLUME, 0x8000);
+ //ac97_write_register(AC97_LINE_IN_VOLUME, 0x0707);
+ //ac97_write_register(AC97_AUX_IN_VOLUME, 0x0707);
+ ac97_write_register(AC97_PCM_OUT_VOLUME, _tAC97.sPlayVolume);
+
+ ac97_write_register(AC97_RECORD_SELECT, 0); /* record select MIC in */
+ ac97_write_register(AC97_RECORD_GAIN, 0x0404);
+ ac97_write_register(AC97_RECORD_GAIN_MIC, 0x0004);
+ ac97_write_register(AC97_GENERAL_PURPOSE, 0);
+
+ LEAVE();
+
+ return 0;
+}
+
+static VOID ac97SetPlaySampleRate(INT nSamplingRate)
+{
+ ENTER();
+
+ /* set play sampling rate */
+ if (nSamplingRate != 48000)
+ {
+ /* enable VRA and set sampling frequency */
+ ac97_write_register(AC97_EXT_AUDIO_CTRL, ac97_read_register(AC97_EXT_AUDIO_CTRL)|0x1);
+ ac97_write_register(AC97_FRONT_DAC_RATE, nSamplingRate);
+ }
+
+ _tAC97.nPlaySamplingRate = nSamplingRate;
+
+ LEAVE();
+}
+
+static VOID ac97SetRecordSampleRate(INT nSamplingRate)
+{
+ ENTER();
+
+ /* set record sampling rate */
+ if (nSamplingRate != 48000)
+ {
+ /* enable VRA and set sampling frequency */
+ ac97_write_register(AC97_EXT_AUDIO_CTRL, ac97_read_register(AC97_EXT_AUDIO_CTRL)|0x1);
+ ac97_write_register(AC97_LR_ADC_RATE, nSamplingRate);
+ }
+
+ _tAC97.nRecSamplingRate = nSamplingRate;
+
+ LEAVE();
+}
+
+static VOID ac97SetPlayCallBackFunction(AU_CB_FUN_T fnCallBack)
+{
+ ENTER();
+
+ _tAC97.fnPlayCallBack = fnCallBack;
+
+ LEAVE();
+}
+
+static VOID ac97SetRecordCallBackFunction(AU_CB_FUN_T fnCallBack)
+{
+ ENTER();
+
+ _tAC97.fnRecCallBack = fnCallBack;
+
+ LEAVE();
+}
+
+
+
+/*************************************************************************/
+/* */
+/* FUNCTION */
+/* ac97SetPlayVolume */
+/* */
+/* DESCRIPTION */
+/* Set AC97 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 ac97SetPlayVolume(UINT32 ucLeftVol, UINT32 ucRightVol)
+{
+ int nLData, nRData;
+
+ ENTER();
+
+ //MSG2("Set AC97 volume to : %d-%d\n", ucLeftVol, ucRightVol);
+
+ if (ucLeftVol == 0)
+ nLData = 0x80;
+ else
+ nLData = 31 - (ucLeftVol & 0x1f);
+
+ if (ucRightVol == 0)
+ nRData = 0x80;
+ else
+ nRData = 31 - (ucRightVol & 0x1f);
+
+ _tAC97.sPlayVolume = (nLData << 8) | nRData;
+ ac97_write_register(AC97_PCM_OUT_VOLUME, (nLData << 8) | nRData);
+ //ac97_write_register(AC97_PCM_OUT_VOLUME, 0x101);
+
+ if (ucLeftVol == 0)
+ nLData = 0x80;
+ else
+ nLData = 62 - ucLeftVol*2;
+
+ if (ucRightVol == 0)
+ nRData = 0x80;
+ else
+ nRData = 62 - ucRightVol*2;
+
+ ac97_write_register(AC97_AUX_OUT_VOLUME, (nLData << 8) | nRData);
+ ac97_write_register(AC97_MASTER_VOLUME, (nLData << 8) | nRData);
+
+ MSG2("AC97_MASTER_VOLUME = 0x%04x\r\n", ac97_read_register(AC97_MASTER_VOLUME));
+ MSG2("AC97_AUX_OUT_VOLUME = 0x%04x\r\n", ac97_read_register(AC97_AUX_OUT_VOLUME));
+ MSG2("AC97_PCM_OUT_VOLUME = 0x%04x\r\n", ac97_read_register(AC97_PCM_OUT_VOLUME));
+#if 0
+ down(&ac97_sem);
+ if (_bAC97Active & AC97_PLAY_ACTIVE)
+ AUDIO_WRITE(REG_ACTL_ACOS0, 0x1f);
+ else
+ AUDIO_WRITE(REG_ACTL_ACOS0, 0);
+ up(&ac97_sem);
+#endif
+ LEAVE();
+
+ return 0;
+}
+
+
+/*************************************************************************/
+/* */
+/* FUNCTION */
+/* ac97SetRecordVolume */
+/* */
+/* DESCRIPTION */
+/* Set AC97 left and right channel record volume. */
+/* */
+/* INPUTS */
+/* ucLeftVol record volume of left channel */
+/* ucRightVol record volume of left channel */
+/* 0: mute */
+/* 1: minimal volume */
+/* 31: maxmum volume */
+/* */
+/* OUTPUTS */
+/* None */
+/* */
+/* RETURN */
+/* 0 Success */
+/* Otherwise error */
+/* */
+/*************************************************************************/
+static int ac97SetRecordVolume(UINT32 ucLeftVol, UINT32 ucRightVol)
+{
+ //INT nStatus;
+
+ ENTER();
+
+ if (ucLeftVol == 0)
+ ucLeftVol = 0x80;
+ else
+ ucLeftVol = 32 - (ucLeftVol & 0x1f);
+
+ if (ucRightVol == 0)
+ ucRightVol = 0x80;
+ else
+ ucRightVol = 32 - (ucRightVol & 0x1f);
+
+ _tAC97.sRecVolume = (ucLeftVol << 8) | ucRightVol;
+
+ ac97_write_register(AC97_MIC_VOLUME, ucRightVol );
+
+ //ac97_read_all_registers();
+ LEAVE();
+
+ return 0;
+}
+
+
+/*************************************************************************/
+/* */
+/* FUNCTION */
+/* ac97StartPlay */
+/* */
+/* DESCRIPTION */
+/* Start AC97 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 */
+/* nChannels number of playback nChannels */
+/* 1: single channel, otherwise: double nChannels */
+/* */
+/* OUTPUTS */
+/* None */
+/* */
+/* RETURN */
+/* 0 Success */
+/* Otherwise error */
+/* */
+/*************************************************************************/
+static int ac97StartPlay(AU_CB_FUN_T fnCallBack, INT nSamplingRate, INT nChannels)
+{
+ INT nStatus;
+
+ ENTER();
+
+ if (_bAC97Active & AC97_PLAY_ACTIVE)
+ return ERR_AC97_PLAY_ACTIVE; /* AC97 was playing */
+
+
+ if (_bAC97Active == 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 != 1)
+ AUDIO_WRITE(REG_ACTL_RESET, AUDIO_READ(REG_ACTL_RESET) | PLAY_LEFT_CHNNEL);
+
+ nStatus = ac97_reset();
+ if (nStatus < 0)
+ return nStatus;
+ }
+
+ /* disable by Qfu , for the installation of irq has been done in wb_audio.c
+ the only thing to do is to enable irq by this routine */
+ Enable_Int(AU_PLAY_INT_NUM);
+
+ /* set play sampling rate */
+ ac97SetPlaySampleRate(nSamplingRate);
+ ac97SetPlayCallBackFunction(fnCallBack);
+
+ /* set DMA play destination base address */
+ AUDIO_WRITE(REG_ACTL_PDSTB, _tAC97.uPlayBufferAddr);
+
+ /* set DMA play buffer length */
+ AUDIO_WRITE(REG_ACTL_PDST_LENGTH, _tAC97.uPlayBufferLength);
+
+ /* start playing */
+ MSG("AC97 start playing...\n");
+ _bPlayDmaToggle = 0;
+ down(&ac97_sem);
+ AUDIO_WRITE(REG_ACTL_ACOS0, AUDIO_READ(REG_ACTL_ACOS0) | 0x1C);
+ up(&ac97_sem);
+ AUDIO_WRITE(REG_ACTL_PSR, 0x3);
+ AUDIO_WRITE(REG_ACTL_RESET, AUDIO_READ(REG_ACTL_RESET) | AC_PLAY);
+ _bAC97Active |= AC97_PLAY_ACTIVE;
+
+ LEAVE();
+
+ return 0;
+}
+
+
+/*************************************************************************/
+/* */
+/* FUNCTION */
+/* ac97StopPlay */
+/* */
+/* DESCRIPTION */
+/* Stop AC97 playback immdediately. */
+/* */
+/* INPUTS */
+/* None */
+/* */
+/* OUTPUTS */
+/* None */
+/* */
+/* RETURN */
+/* 0 Success */
+/* Otherwise error */
+/* */
+/*************************************************************************/
+static void ac97StopPlay(void)
+{
+ ENTER();
+
+ AUDIO_WRITE(REG_ACTL_RESET, AUDIO_READ(REG_ACTL_RESET) & ~(PLAY_RIGHT_CHNNEL | PLAY_LEFT_CHNNEL));
+
+ if (!(_bAC97Active & AC97_PLAY_ACTIVE))
+ return;
+
+
+ //ac97_read_all_registers ();
+
+ /* stop playing */
+ AUDIO_WRITE(REG_ACTL_RESET, AUDIO_READ(REG_ACTL_RESET) & ~AC_PLAY);
+
+ down(&ac97_sem);
+ AUDIO_WRITE(REG_ACTL_ACOS0, AUDIO_READ(REG_ACTL_ACOS0) & ~0xC);
+ up(&ac97_sem);
+
+
+ _bAC97Active &= ~AC97_PLAY_ACTIVE;
+ /* disable audio play interrupt */
+ if (!_bAC97Active)
+ Disable_Int(AU_PLAY_INT_NUM);
+
+
+ LEAVE();
+
+ return;
+}
+
+
+/*************************************************************************/
+/* */
+/* FUNCTION */
+/* ac97StartRecord */
+/* */
+/* DESCRIPTION */
+/* Start AC97 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 */
+/* nChannels number of record nChannels */
+/* 1: single channel, otherwise: double nChannels */
+/* */
+/* OUTPUTS */
+/* None */
+/* */
+/* RETURN */
+/* 0 Success */
+/* Otherwise error */
+/* */
+/*************************************************************************/
+static int ac97StartRecord(AU_CB_FUN_T fnCallBack, INT nSamplingRate, INT nChannels)
+{
+ INT nStatus;
+ unsigned int i;
+
+ ENTER();
+
+ if (_bAC97Active & AC97_REC_ACTIVE)
+ return ERR_AC97_REC_ACTIVE; /* AC97 was recording */
+
+ if (_bAC97Active == 0)
+ {
+
+ nStatus = ac97_reset();
+ if (nStatus < 0)
+ return nStatus;
+ }
+
+
+ AUDIO_WRITE(REG_ACTL_RESET, AUDIO_READ(REG_ACTL_RESET) &~RECORD_RIGHT_CHNNEL &~RECORD_LEFT_CHNNEL);
+
+ AUDIO_WRITE(REG_ACTL_RESET, AUDIO_READ(REG_ACTL_RESET) | RECORD_RIGHT_CHNNEL);
+ if (nChannels != 1) {
+
+ AUDIO_WRITE(REG_ACTL_RESET, AUDIO_READ(REG_ACTL_RESET) | RECORD_LEFT_CHNNEL);
+ }
+
+
+
+
+ /* enable AC97 record interrupt */
+ Enable_Int(AU_REC_INT_NUM);
+
+
+
+ /* set record sampling rate */
+ ac97SetRecordSampleRate(nSamplingRate);
+ ac97SetRecordCallBackFunction(fnCallBack);
+
+
+ /* set DMA record destination base address */
+ AUDIO_WRITE(REG_ACTL_RDSTB, _tAC97.uRecordBufferAddr);
+
+ /* set DMA record buffer length */
+ AUDIO_WRITE(REG_ACTL_RDST_LENGTH, _tAC97.uRecordBufferLength);
+
+ /* start recording */
+ MSG("AC97 start recording...\n");
+ _bRecDmaToggle = 0;
+ AUDIO_WRITE(REG_ACTL_RSR, 0x3);
+ AUDIO_WRITE(REG_ACTL_RESET, AUDIO_READ(REG_ACTL_RESET) | AC_RECORD);
+ _bAC97Active |= AC97_REC_ACTIVE;
+
+ LEAVE();
+
+ return 0;
+}
+
+
+/*************************************************************************/
+/* */
+/* FUNCTION */
+/* ac97StopRecord */
+/* */
+/* DESCRIPTION */
+/* Stop AC97 record immediately. */
+/* */
+/* INPUTS */
+/* None */
+/* */
+/* OUTPUTS */
+/* None */
+/* */
+/* RETURN */
+/* 0 Success */
+/* Otherwise error */
+/* */
+/*************************************************************************/
+static void ac97StopRecord(void)
+{
+ ENTER();
+
+ AUDIO_WRITE(REG_ACTL_RESET, AUDIO_READ(REG_ACTL_RESET) & ~(RECORD_RIGHT_CHNNEL | RECORD_LEFT_CHNNEL));
+
+ if (!(_bAC97Active & AC97_REC_ACTIVE))
+ return;
+
+ //ac97_read_all_registers ();
+ /* stop recording */
+ AUDIO_WRITE(REG_ACTL_RESET, AUDIO_READ(REG_ACTL_RESET) & ~AC_RECORD);
+
+ _bAC97Active &= ~AC97_REC_ACTIVE;
+ /* disable audio record interrupt */
+ if (!_bAC97Active)
+ Disable_Int(AU_PLAY_INT_NUM);
+
+
+ LEAVE();
+
+ return;
+}
+
+static void ac97SetPlayBuffer(UINT32 uDMABufferAddr, UINT32 uDMABufferLength)
+{
+ ENTER();
+
+ _tAC97.uPlayBufferAddr = uDMABufferAddr;
+ _tAC97.uPlayBufferLength = uDMABufferLength;
+
+ LEAVE();
+}
+
+static void ac97SetRecordBuffer(UINT32 uDMABufferAddr, UINT32 uDMABufferLength)
+{
+ ENTER();
+
+ _tAC97.uRecordBufferAddr = uDMABufferAddr;
+ _tAC97.uRecordBufferLength = uDMABufferLength;
+
+ LEAVE();
+}
+
+
+static INT ac97Init(VOID)
+{
+ int nStatus = 0;
+
+ ENTER();
+
+ 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 = ac97_reset();
+ if (nStatus < 0)
+ return nStatus;
+
+ LEAVE();
+
+ return 0;
+}
+
+static INT ac97GetCapacity(VOID)
+{
+ return DSP_CAP_DUPLEX; /* support full duplex */
+}
+
+WB_AUDIO_CODEC_T wb_ac97_codec = {
+ dev: AU_DEV_AC97,
+ get_capacity: ac97GetCapacity,
+ set_play_buffer: ac97SetPlayBuffer,
+ set_record_buffer: ac97SetRecordBuffer,
+ reset: ac97Init,
+ start_play: ac97StartPlay,
+ stop_play: ac97StopPlay,
+ start_record: ac97StartRecord,
+ stop_record: ac97StopRecord,
+ set_play_volume: ac97SetPlayVolume,
+ set_record_volume: ac97SetRecordVolume,
+ play_interrupt: ac97_play_isr,
+ record_interrupt: ac97_rec_isr,
+};
generated by cgit v0.12 at 2024-05-03 17:52:41 (GMT)