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

[Seth Forshee]

On Mon, Aug 27, 2018 at 10:07:14AM +0800, Hui Wang wrote:
> 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.

Applied this patch to cosmic/master-next, and cherry picked the commit
directly to unstable/master. Thanks!