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1、目前使用alsa进行适配。

（1）aplay，idl_render都可以播放。

（2）系统自带的音乐软件可以播放但没声音。

（3）使用amixcer -c 1 sset Master,0 unmute 50%后音乐软件有声音。

想请问下，这个设备默认就是静音状态么，在hdi里有处理声卡默认是否静音么。感谢支持。

信息如下：

Speaker默认未静音

# pactl list sinks                                                             
Sink #0
        State: SUSPENDED
        Name: Speaker
        Description: HDI sink is primary
        Driver: module_hdi_sink.c
        Sample Specification: s16le 2ch 44100Hz
        Channel Map: front-left,front-right
        Owner Module: 2
        Mute: no
        Volume: front-left: 65536 / 100% / 0.00 dB,   front-right: 65536 / 100% / 0.00 dB
                balance 0.00
        Base Volume: 65536 / 100% / 0.00 dB
        Monitor Source: Speaker.monitor
        Latency: 0 usec, configured 0 usec
        Flags: HARDWARE DECIBEL_VOLUME LATENCY 
        Properties:
                device.string = "primary"
                device.description = "HDI sink is primary"
                filePath = ""
                networkId = "LocalDevice"
                device.icon_name = "audio-card"
        Formats:
                pcm

Sink #1
        State: SUSPENDED
        Name: InnerCapturerSink
        Description: Null Output
        Driver: module_inner_capturer_sink.c
        Sample Specification: s16le 2ch 48000Hz
        Channel Map: front-left,front-right
        Owner Module: 3
        Mute: no
        Volume: front-left: 65536 / 100% / 0.00 dB,   front-right: 65536 / 100% / 0.00 dB
                balance 0.00
        Base Volume: 65536 / 100% / 0.00 dB
        Monitor Source: InnerCapturerSink.monitor
        Latency: 0 usec, configured 0 usec
        Flags: DECIBEL_VOLUME LATENCY 
        Properties:
                device.description = "Null Output"
                device.class = "capturer"
                device.string = "innercapturer"
                device.icon_name = "audio-card"
        Formats:
                pcm

适配的是card 1 

# aplay  -l                                                                    
**** List of PLAYBACK Hardware Devices ****
card 0: Loongson [HDA Loongson], device 3: HDMI 0 [HDMI 0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: Loongson [HDA Loongson], device 7: HDMI 0 [HDMI 0 *]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: Loongson_1 [HDA Loongson], device 0: CX20632 Analog [CX20632 Analog]
  Subdevices: 0/1
  Subdevice #0: subdevice #0

开机后默认为静音状态，关闭Master静音后，有输出。

# amixer -c 1                                                                  
Simple mixer control 'Master',0
  Capabilities: pvolume pvolume-joined pswitch pswitch-joined
  Playback channels: Mono
  Limits: Playback 0 - 74
  Mono: Playback 0 [0%] [-74.00dB] [off]
Simple mixer control 'Headphone',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 74
  Mono:
  Front Left: Playback 74 [100%] [0.00dB] [on]
  Front Right: Playback 74 [100%] [0.00dB] [on]
Simple mixer control 'Front Mic Boost',0
  Capabilities: volume
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: 0 - 4
  Front Left: 0 [0%] [0.00dB]
  Front Right: 0 [0%] [0.00dB]
Simple mixer control 'Line Out',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 74
  Mono:
  Front Left: Playback 74 [100%] [0.00dB] [on]
  Front Right: Playback 74 [100%] [0.00dB] [on]
Simple mixer control 'Beep',0
  Capabilities: pvolume pvolume-joined pswitch pswitch-joined
  Playback channels: Mono
  Limits: Playback 0 - 7
  Mono: Playback 0 [0%] [-28.00dB] [off]
Simple mixer control 'Capture',0
  Capabilities: cvolume cswitch
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 80
  Front Left: Capture 0 [0%] [-74.00dB] [off]
  Front Right: Capture 0 [0%] [-74.00dB] [off]
Simple mixer control 'Auto-Mute Mode',0
  Capabilities: enum
  Items: 'Disabled' 'Enabled'
  Item0: 'Enabled'
Simple mixer control 'Loopback Mixing',0
  Capabilities: enum
  Items: 'Disabled' 'Enabled'
  Item0: 'Disabled'
Simple mixer control 'Rear Mic Boost',0
  Capabilities: volume
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: 0 - 4
  Front Left: 0 [0%] [0.00dB]
  Front Right: 0 [0%] [0.00dB]