[SRU][Bionic][PATCH] Microphone cannot be detected with front panel audio combo jack on HP Z8-G4 machine

[Hui Wang]

BugLink: https://bugs.launchpad.net/bugs/1789145

[Impact]
This bug comes from OEM cert project of HP, the front mic jack can't detect
any plug/unplug, and we can't record any sound from plugged mic. This is a
block for OEM project.

[Fix]
The fix comes from Realtek, it is said that this is a power issue, after changing
the capability of the pin of linein, the power will keep being on for both linein
and front mic, then this issue is fixed.

[Test Case]
We tested plug/unplug detection and record through iphone/nokia type headset-mic,
all worked well.

[Regression Potential]
none, this is new added quirk, and only apply to the specific machine.


Kailang Yang (1):
  ALSA: hda/realtek - Fix HP Headset Mic can't record

 sound/pci/hda/patch_realtek.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

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2.7.4