mt6735 [Speaker Customization]添加外置PA等Speaker客制化问题整理

[DESCRIPTION]
对于MT6589、MT6572、MT6582的Speaker的客制化需求部分的一些整理。
一些可能的配置请参考下面的表格，Solution请根据序号参考对应的Solution.
外置PA的驱动，请参考如下方式完成：也可参考 [FAQ05881] [Audio Driver] 6589、6572、6582喇叭无声，软件上应该如何配置
把CUSTOM_KERNEL_SOUND配置为相应PA驱动的文件夹名，然后实做具体的PA驱动。

例子：使用yad的外部PA，则CUSTOM_KERNEL_SOUND = amp_yad，然后实做\alps\mediatek\custom\common\kernel\sound\ amp_yad\yusu_android_speaker.c
注解：Yes:表示Speaker连接的位置；No:表示与Speaker无关；NC表示不接任何设备；
Not Support：表示此种配置无法达到预期效果; 2in1 Speaker: 指的是Speaker+Receiver.
 


[SOLUTION]

#1.Compile Option设定：mtk_2IN1_SPK_SUPPORT= no
Audio_custom_exp.h (mediatek\custom\[$projectname]\hal\audioflinger\audio)
//#define USING_EXTAMP_HP
Audio_Customization_Common.h(alps\mediatek\custom\common\hal\audioflinger)
//#define ENABLE_STEREO_SPEAKER
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#2.Compile Option设定： MTK_2IN1_SPK_SUPPORT= no
Audio_custom_exp.h (mediatek\custom\[$projectname]\hal\audioflinger\audio)
#define USING_EXTAMP_HP
Audio_Customization_Common.h(alps\mediatek\custom\common\hal\audioflinger)
//#define ENABLE_STEREO_SPEAKER
--------------------------------------------------------------------------------
#3.Compile Option设定： MTK_2IN1_SPK_SUPPORT= yes
Audio_custom_exp.h (mediatek\custom\[$projectname]\hal\audioflinger\audio)
//#define USING_EXTAMP_HP
Audio_Customization_Common.h(alps\mediatek\custom\common\hal\audioflinger)
//#define ENABLE_STEREO_SPEAKER
--------------------------------------------------------------------------------
#4.Compile Option设定： MTK_2IN1_SPK_SUPPORT= no
Audio_custom_exp.h (mediatek\custom\[$projectname]\hal\audioflinger\audio)
#define USING_EXTAMP_HP
Audio_Customization_Common.h(alps\mediatek\custom\common\hal\audioflinger)
#define ENABLE_STEREO_SPEAKER
--------------------------------------------------------------------------------
#5.Compile Option设定： MTK_2IN1_SPK_SUPPORT= no
Audio_custom_exp.h (mediatek\custom\[$projectname]\hal\audioflinger\audio)
//#define USING_EXTAMP_HP
Audio_Customization_Common.h(alps\mediatek\custom\common\hal\audioflinger)
如果外置PA接在AU_HPL,那么
//#define ENABLE_STEREO_SPEAKER
如果外置PA接在 AU_HPR,那么
#define ENABLE_STEREO_SPEAKER
开启Audio Path所需的改动：
AudioResourceManager.cpp(alps\mediatek\platform\[$chip]\hardware\audio\aud_drv)
a.增加如下函数
//{@Special_PA
/******************************************************************
**a function to reset DL device for using special dual amp:internal PA+ one external PA with AUD_HPL/R
**mDlOutputDevice:Ori DL device;
**DeviceCount:Ori DL device Count.
********************************************************************/
void CheckDLForSpDualAMP(unsigned int &mDlOutputDevice,uint32 &DeviceCount){
ALOGD("+Special_PA mDlOutputDevice(0x%x) DeviceCount = %d", mDlOutputDevice, DeviceCount);
if((DeviceCount==1)&&(mDlOutputDevice&AUDIO_DEVICE_OUT_SPEAKER)){
mDlOutputDevice |= AUDIO_DEVICE_OUT_WIRED_HEADSET;
DeviceCount = PopCount(mDlOutputDevice);
}
ALOGD("-Special_PA mDlOutputDevice(0x%x) DeviceCount = %d", mDlOutputDevice, DeviceCount);
}
//end Special_PA}
b.在以下三处分别调用新增的函数 CheckDLForSpDualAMP
status_t AudioResourceManager::TurnonAudioDevice(unsigned int mDlOutputDevice)
{
uint32 DeviceCount = PopCount(mDlOutputDevice);
ALOGD("TurnonAudioDevice = 0x%x DeviceCount = %d", mDlOutputDevice, DeviceCount);
//{@Special_PA
CheckDLForSpDualAMP(mDlOutputDevice,DeviceCount);
//}
if (DeviceCount == 1)
......
}
status_t AudioResourceManager::TurnonAudioDeviceIncall(unsigned int mDlOutputDevice)
{
SetMICInvserse(MMIcInverseSetting);
uint32 DeviceCount = PopCount(mDlOutputDevice);
ALOGD("TurnonAudioDevice = 0x%x DeviceCount = %d", mDlOutputDevice, DeviceCount);
//{@Special_PA
CheckDLForSpDualAMP(mDlOutputDevice,DeviceCount);
//}
if (DeviceCount == 1)
......
}
status_t AudioResourceManager::TurnoffAudioDevice(unsigned int mDlOutputDevice)
{
uint32 DeviceCount = PopCount(mDlOutputDevice);
ALOGD("TurnoffAudioDevice = 0x%x DeviceCount = %d", mDlOutputDevice, DeviceCount);
//{@Special_PA
CheckDLForSpDualAMP(mDlOutputDevice,DeviceCount);
//}
if (DeviceCount == 1)
......
}
Speaker音量的tuning:
请参考FAQ08356『[Audio Volume]来电\闹钟\短信提示\铃声预览\拍照音等，在播放过程中插入或者拔出耳机，外放中
的铃声音异常』，参考其中调整 Headset_LouDSPeaker mode的方式来调整两个Speaker的音量。
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#6.只需要在#5的基础上，修改该Compile Option设定： MTK_2IN1_SPK_SUPPORT= yes
其它部分的改动以及音量调整方式与#5完全一样。
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PS：#5和#6中的双Speaker连接方式会导致两个Speaker的音质有所

差异，请三思而后行，切忌切忌。

MT6735相关资料参考地址：http://bbs.16rd.com/thread-454398-1-1.html