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OpenHarmony5.0.2 音频audio适配

news 2025/4/15 15:00:00

开发环境

OpenHarmony5.0.2 RK3568

音频芯片：rk809，音频芯片在核心板pmic中，rk809引出的耳机和喇叭

遇到问题

编译后耳机有声音，但喇叭没有，拔插入耳机扬声器也没声音

解决思路

采用默认ADM方式，没用ALSA方式，修改默认的寄存器配置，使扬声器和耳机同时有声，耳机插拔调用寄存器修改扬声器静音还是播放来进行控制。目前只是解决这两个问题，其他音频相关没测试，例如录音之类的功能，后续调试到再完善。

修改代码

1、修改SELinux系统权限

文件地址：base/security/selinux_adapter/selinux.gni

declare_args() {selinux_adapter_enforce = false
}

hdc shell 执行 getenforce 命令验证输出应为 Permissive

修改权限避免引起的问题，查看日志

permissive=1 处于宽容模式，只告警不做访问拦截。

permissive=0 强制模式时，做拦截

2、修改设备树

耳机检测配置

	rk_headset: rk-headset {compatible = "rockchip_headset";headset_gpio = <&gpio1 RK_PD4 GPIO_ACTIVE_HIGH>;  //改成自己的gpiopinctrl-names = "default";pinctrl-0 = <&hp_det>;//io-channels = <&saradc 1>;};

声卡配置

	rk809_sound: rk809-sound {status = "okay";compatible = "simple-audio-card";simple-audio-card,format = "i2s";simple-audio-card,name = "rockchip,rk809-codec";simple-audio-card,mclk-fs = <256>;simple-audio-card,cpu {sound-dai = <&i2s1_8ch>;};simple-audio-card,codec {sound-dai = <&rk809_codec>;};};rk809_codec: codec {#sound-dai-cells = <0>;compatible = "rockchip,rk809-codec", "rockchip,rk817-codec";clocks = <&cru I2S1_MCLKOUT>;clock-names = "mclk";assigned-clocks = <&cru I2S1_MCLKOUT>, <&cru I2S1_MCLK_TX_IOE>;assigned-clock-rates = <12288000>;assigned-clock-parents = <&cru I2S1_MCLKOUT_TX>, <&cru I2S1_MCLKOUT_TX>;pinctrl-names = "default";pinctrl-0 = <&i2s1m0_mclk>;hp-volume = <3>;spk-volume = <20>;capture_volume = <255>;//use-ext-amplifier;//mic-in-differential;status = "okay";};

3、修改播放路径配置

该文件定义了 ‌不同音频场景下的硬件设备开关状态‌，用于控制音频信号的输入/输出路由，确保系统在不同使用场景下切换正确的音频路径，修改如下文件

drivers/peripheral/audio/config/audio_paths.json
vendor/hihope/default_core_system/hals/audio/audio_paths.json
vendor/hihope/rk3568/hals/audio/audio_paths.json

........"hdf_audio_codec_primary_dev0": [{"deep-buffer-playback": [{"Headphones": [{"name": "Speaker1 Switch","value": 1   //改1}
........

此文件修改后对于代码的解析地址

drivers/hdf_core/framework/model/audio/dispatch/src/audio_control_dispatch.c

对应的方法如下，查看输出日志如果修改后没变化，可以删除out目录重新编译。
static int32_t ControlHostElemWrite(const struct HdfDeviceIoClient *client,
struct HdfSBuf *reqData, struct HdfSBuf *rspData)

4、修改默认的寄存器配置

修改后删除out目录重新编译，不然不会生效

vendor/hihope/rk3568_mini_system/hdf_config/khdf/audio/analog_headset_config.hcs

root {platform {template headset_info {match_attr = "";serviceName = "";}headset :: headset_info {headset_gpio = 60;  //自己计算gpio//hook_gpio = 0;  //注释掉
.........文档默认配置耳机检测的GPIO为Gpio3 RK_PC3
Gpio3 RK_PC3
bank =3
group=2
X=3
number=2*8+3=19
Pin=3*32+19=115

vendor/hihope/default_core_system/hdf_config/khdf/audio/codec_config.hcs
vendor/hihope/rk3568/hdf_config/khdf/audio/codec_config.hcs

.....................regConfig {/* reg, value */initSeqConfig = [0x38,    0x18,   //修改0x41,    0xf7,  //修改.....................

5、修改耳机检测相关代码

文件位置：

device/board/hihope/rk3568/audio_drivers/headset_monitor/src/analog_headset_core.c

方法static int32_t LinuxReadConfig(struct device_node *node, struct HeadsetPdata *pdata)

.........   /* hook */ret = of_get_named_gpio_flags(node, "hook_gpio", 0, &pdata->hookGpio);if (ret < 0) {AUDIO_DEVICE_LOG_WARNING("----Can not read property hookGpio.-----");pdata->hookGpio = 0;/* adc mode *///pdata->isHookAdcMode = true; pdata->isHookAdcMode = false;//修改后} else {ret = of_property_read_u32(node, "hook_down_type", &pdata->hookDownType);if (ret < 0) {AUDIO_DEVICE_LOG_WARNING("have not set hookDownType,set >hook< insert type low level default.");pdata->hookDownType = 0;}// pdata->isHookAdcMode = false;pdata->isHookAdcMode = true;//修改后}
............

新增方法控制扬声器开关

device/board/hihope/rk3568/audio_drivers/codec/rk809_codec/include/rk809_codec_impl.h

新增接口

/*扬声器开关控制0=关1=开*/
int32_t Rk809DeviceSpeakerControl(uint32_t val);

device/board/hihope/rk3568/audio_drivers/codec/rk809_codec/src/rk809_codec_impl.c

新增实现方法

//扬声器关闭
static const struct RegDefaultVal g_rk817SpeakerCloseReg[] = {{ RK817_CODEC_DDAC_MUTE_MIXCTL, 0xa0 },{ RK817_CODEC_ACLASSD_CFG1, 0x69 },{ RK817_CODEC_ACLASSD_CFG2, 0x44 },
};static const struct RegConfig g_rk817SpeakerCloseRegConfig = {.regVal = g_rk817SpeakerCloseReg,.size = ARRAY_SIZE(g_rk817SpeakerCloseReg),
};//扬声器打开
static const struct RegDefaultVal g_rk817SpeakerOpenReg[] = {/* CLASS D mode */{ RK817_CODEC_DDAC_MUTE_MIXCTL,0x18},/* CLASS D enable */{ RK817_CODEC_ACLASSD_CFG1,0xa5},/* restart CLASS D, OCPP/N */{ RK817_CODEC_ACLASSD_CFG2,0xf7},
};static const struct RegConfig g_rk817SpeakerOpenRegConfig = {.regVal = g_rk817SpeakerOpenReg,.size = ARRAY_SIZE(g_rk817SpeakerOpenReg),
};/*扬声器开关控制0=关1=开*/
int32_t Rk809DeviceSpeakerControl(uint32_t val){int32_t ret;if(val==0){ret = RK809DeviceRegConfig(g_rk817SpeakerCloseRegConfig);if (ret != HDF_SUCCESS) {return HDF_FAILURE;}}else if(val==1){ret = RK809DeviceRegConfig(g_rk817SpeakerOpenRegConfig);if (ret != HDF_SUCCESS) {return HDF_FAILURE;}}else{return HDF_FAILURE;}return HDF_SUCCESS;
}

device/board/hihope/rk3568/audio_drivers/headset_monitor/src/analog_headset_gpio.c

调用方法

/*  根据插入状态控制扬声器开关*/
static void ControlSpeakerState(int32_t level)
{if(level == HEADSET_IN){//关扬声器Rk809DeviceSpeakerControl(0);}else {//开扬声器Rk809DeviceSpeakerControl(1);}
}

CheckState方法调用

static int32_t CheckState(struct HeadsetPriv *hs, bool *beChange){
..............if (level2 < 0) {return HDF_FAILURE;}/*  根据插入状态控制扬声器开关*/ControlSpeakerState(level2);
..................

修改默认驱动值

device/board/hihope/rk3568/audio_drivers/codec/rk809_codec/src/rk809_codec_linux_driver.c

static const struct reg_default rk817_reg_defaults[] = {.............{ RK817_CODEC_ADAC_CFG0, 0x00 },{ RK817_CODEC_ADAC_CFG1, PWD_DACBIAS_ON | PWD_DACD_ON |PWD_DACL_ON | PWD_DACR_ON }, //修改{ RK817_CODEC_DDAC_POPD_DACST, 0x82 },{ RK817_CODEC_DDAC_VOLL, 0x00 },.............{ RK817_CODEC_DDAC_LMT2, 0x00 },{ RK817_CODEC_DDAC_MUTE_MIXCTL, 0x18 }, //修改{ RK817_CODEC_DDAC_RVOLL, 0xff },.............{ RK817_CODEC_AHP_CFG0, 0x80 },//修改{ RK817_CODEC_AHP_CFG1, 0x1f },{ RK817_CODEC_AHP_CP, 0x11 }, //修改{ RK817_CODEC_ACLASSD_CFG1, 0xa5 }, //修改{ RK817_CODEC_ACLASSD_CFG2, 0xf7 }, //修改{ RK817_CODEC_APLL_CFG0, 0x04 },.............

6、修改耳机插入后设备优先级相关代码（改不改影响不大）

文件位置：

foundation/multimedia/audio_framework/services/audio_policy/server/include/service/manager/pnp_server/audio_pnp_param.h

增加定义常量
.............
#define UEVENT_STATE_ANALOG_HP0 "HEADPHONE=0"
#define UEVENT_STATE_ANALOG_HP1 "HEADPHONE=1"
.............

修改业务判断

文件位置：

foundation/multimedia/audio_framework/services/audio_policy/server/src/service/manager/pnp_server/audio_socket_thread.cpp

修改方法，此处不能检测到耳机设备新增，只能是麦克，先注释掉麦克，后期调试麦克再观察。
int32_t AudioSocketThread::SetAudioPnpServerEventValue(AudioEvent *audioEvent, struct AudioPnpUevent *audioPnpUevent)....................//if (strstr(audioPnpUevent->state, UEVENT_STATE_ANALOG_HS0) != NULL) {if (strstr(audioPnpUevent->state, UEVENT_STATE_ANALOG_HP0) != NULL) {   audioEvent->eventType = PNP_EVENT_DEVICE_REMOVE;} // else if (strstr(audioPnpUevent->state, UEVENT_STATE_ANALOG_HS1) != NULL) {else if (strstr(audioPnpUevent->state, UEVENT_STATE_ANALOG_HP1) != NULL) {audioEvent->eventType = PNP_EVENT_DEVICE_ADD;} else{....................

添加默认设备

foundation/multimedia/audio_framework/services/audio_policy/server/src/service/audio_device_manager.cpp

void AudioDeviceManager::AddDefaultDevices(const sptr<AudioDeviceDescriptor> &devDesc)
{DeviceType devType = devDesc->deviceType_;//if (devType == DEVICE_TYPE_EARPIECE) {if (devType == DEVICE_TYPE_EARPIECE || devType == DEVICE_TYPE_WIRED_HEADSET) {  //修改earpiece_ = devDesc;} else if (devType == DEVICE_TYPE_SPEAKER) {speaker_ = devDesc;//} else if (devType == DEVICE_TYPE_MIC) {} else if (devType == DEVICE_TYPE_MIC || devType == DEVICE_TYPE_WIRED_HEADSET) { //修改defalutMic_ = devDesc;}
}

7、备注

目前修改后，用自带播放器播放音乐扬声器正常有声，拔插入耳机后扬声器中断正常。其他情况未测试。注意：配置文件HCS之类的修改后删除out目录再次编译，不然不生效。目前只做到这个程度，后期有问题优化再更新。

ALSA适配参考：audio适配方案_逸薇 -Laval社区

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