调试声卡驱动的时候，使用aplay命令播放wav音频文件，但是没有声音不清楚哪个环节漏掉了
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看是不是混音器开关没打开？
https://whycan.cn/t_489.html
每次使用tinyalsa设置完音量以后，播放音乐（偶尔一次会发出声音，多说情况下没有音），执行完tinyaplay之后再查看音量又变为零了
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终于出声了？
这个容易啊， 每次播放前设置一次混音器。
设置N次才会有一次发声！
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小白菜 说：晕哥 说：终于出声了？
这个容易啊， 每次播放前设置一次混音器。设置N次才会有一次发声！
这就尴尬了， 把你的混音器用 tinymix contents 都列出来。
Number of controls: 57
ctl type num name value
0 INT 1 headphone volume control 0 (range 0->63)
1 INT 1 earpiece volume control 0 (range 0->63)
2 INT 1 speaker volume control 0 (range 0->63)
3 INT 1 MIC1_G boost stage output mixer control 3 (range 0->7)
4 INT 1 MIC2_G boost stage output mixer control 3 (range 0->7)
5 INT 1 LINEIN_G boost stage output mixer control3 (range 0->7)
6 INT 1 PHONE_G boost stage output mixer control3 (range 0->7)
7 INT 1 PHONE_PG boost stage output mixer control3 (range 0->7)
8 INT 1 PHONE_NG boost stage output mixer control3 (range 0->7)
9 INT 1 MIC1 boost AMP gain control 4 (range 0->7)
10 INT 1 MIC2 boost AMP gain control 4 (range 0->7)
11 INT 1 Lineout volume control 0 (range 0->63)
12 INT 1 PHONEP-PHONEN pre-amp gain control 4 (range 0->7)
13 INT 1 Phoneout gain control 3 (range 0->7)
14 INT 1 ADC input gain ctrl 3 (range 0->7)
15 BOOL 1 Audio phone out Off
16 BOOL 1 Audio phone in Off
17 BOOL 1 Audio earpiece out Off
18 BOOL 1 Audio headphone out Off
19 BOOL 1 Audio speaker out Off
20 BOOL 1 Audio analog main mic Off
21 BOOL 1 Audio analog headsetmic Off
22 BOOL 1 Audio phone voicerecord Off
23 BOOL 1 Audio phone endcall Off
24 BOOL 1 Audio linein record Off
25 BOOL 1 Audio linein in Off
26 ENUM 1 Speaker Function , headsetspkspk_headsetearpiecebtoutbt_button_voice
27 BOOL 1 Audio digital main mic Off
28 BOOL 1 Audio digital headset mic Off
29 BOOL 1 Audio digital phone out Off
30 BOOL 1 Audio digital phonein Off
31 BOOL 1 Audio digital clk format status Off
32 BOOL 1 Audio bt clk format status Off
33 BOOL 1 Audio bt out Off
34 BOOL 1 Audio analog bt mic Off
35 BOOL 1 Audio analog bt phonein Off
36 BOOL 1 Audio digital bt mic Off
37 BOOL 1 Audio digital bt phonein Off
38 BOOL 1 Audio bt button voice Off
39 BOOL 1 Audio digital bb bt clk format Off
40 BOOL 1 Audio system bt capture flag Off
41 BOOL 1 aif3 loopback Off
42 BOOL 1 aif2 loopback Off
43 BOOL 1 digital_bb_bt Off
44 INT 1 system play_capture set 1 0 (range 0->15)
45 INT 1 system play_capture set 2 0 (range 0->15)
46 BOOL 1 AIF1_AD0L_MXR_SRC AIF1DA0Ldata Off
47 BOOL 1 AIF1_AD0L_MXR_SRC AIF2DACLdata Off
48 BOOL 1 AIF1_AD0L_MXR_SRC ADCLdata Off
49 BOOL 1 AIF1_AD0L_MXR_SRC AIF2DACRdata Off
50 BOOL 1 AIF1_AD0R_MXR_SRC AIF1DA0Rdata Off
51 BOOL 1 AIF1_AD0R_MXR_SRC AIF2DACRdata Off
52 BOOL 1 AIF1_AD0R_MXR_SRC ADCRdata Off
53 BOOL 1 AIF1_AD0R_MXR_SRC AIF2DACLdata Off
54 BOOL 1 Analog cap test disable phonein Off
55 BOOL 1 Analog cap test disable mic1 Off
56 BOOL 1 Analog cap test disable mic2 Off
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