jack@jack-Kaisa:~/文档/chromebox_10th_audio_driver$ amixer -c0 cget "iface=CARD,name='HDMI/DP,pcm=2 Jack'"
amixer -c0 cget "iface=CARD,name='HDMI/DP,pcm=3 Jack'"
amixer -c0 cget "iface=CARD,name='HDMI/DP,pcm=4 Jack'"

amixer -c0 cget "iface=PCM,name='ELD',device=2" | head -n 3
amixer -c0 cget "iface=PCM,name='ELD',device=3" | head -n 3
amixer -c0 cget "iface=PCM,name='ELD',device=4" | head -n 3

pactl list cards | sed -n '/cml_rt5682_def/,+220p' | grep -nE '\[Out\] HDMI|availability group|available|not available|device\.product\.name'
numid=10,iface=CARD,name='HDMI/DP,pcm=2 Jack'
  ; type=BOOLEAN,access=r-------,values=1
  : values=on
numid=16,iface=CARD,name='HDMI/DP,pcm=3 Jack'
  ; type=BOOLEAN,access=r-------,values=1
  : values=off
numid=22,iface=CARD,name='HDMI/DP,pcm=4 Jack'
  ; type=BOOLEAN,access=r-------,values=1
  : values=off
numid=15,iface=PCM,name='ELD',device=2
  ; type=BYTES,access=r--v----,values=36
  : values=0x10,0x00,0x08,0x00,0x6a,0x14,0x00,0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x04,0x69,0xa7,0x27,0x41,0x53,0x55,0x53,0x20,0x4d,0x47,0x32,0x37,0x39,0x09,0x17,0x07,0x00,0x00,0x00
numid=21,iface=PCM,name='ELD',device=3
  ; type=BYTES,access=r--v----,values=0
  : values=
numid=27,iface=PCM,name='ELD',device=4
  ; type=BYTES,access=r--v----,values=0
  : values=
24:             device.product.name = "Comet Lake PCH-LP cAVS"
50:             [Out] HDMI3: HDMI3 (type: HDMI, priority: 200, latency offset: 0 usec, availability group: HDMI/DP,pcm=4, not available)
57:             [Out] HDMI2: HDMI2 (type: HDMI, priority: 200, latency offset: 0 usec, availability group: HDMI/DP,pcm=3, not available)
64:             [Out] HDMI1: HDMI1 (type: HDMI, priority: 200, latency offset: 0 usec, availability group: HDMI/DP,pcm=2, available)
70:                             device.product.name = "ASUS MG279"
jack@jack-Kaisa:~/文档/chromebox_10th_audio_driver$