Comment 211 for bug 1332900

control.17 {
  iface CARD
  name 'Headphone Front Jack'
  value false
  comment {
   access read
   type BOOLEAN
   count 1
  }
 }
 control.18 {
  iface CARD
  name 'Headphone Surround Jack'
  value false
  comment {
   access read
   type BOOLEAN
   count 1
  }
 }

without subwoofer

the two headphone already support surround40, which only need retask mic jack to output

however when headset jack require capture source to change role of the combo jack

the speaker should still be auto mute by the driver

pinctl of speaker node 0x14 change from OUT to zero when you plug headset or headphome

 Pin Default 0x90170110: [Fixed] Speaker at Int N/A
    Conn = Analog, Color = Unknown
    DefAssociation = 0x1, Sequence = 0x0
    Misc = NO_PRESENCE
  Pin-ctls: 0x40: OUT

it is pulseaudio mute/unmute the speaker playback switch according to state of those[JACK] in pulseaudio conf files

http://cgit.freedesktop.org/pulseaudio/pulseaudio/tree/src/modules/alsa/mixer/paths/analog-output-headphones.conf

http://cgit.freedesktop.org/pulseaudio/pulseaudio/tree/src/modules/alsa/mixer/paths/analog-output-speaker.conf