[B/C][PATCH 0/4] Fix realtek pop noise found on some wyse platforms

[Wen-chien Jesse Sung]

BugLink: https://launchpad.net/bugs/1821290

* Impact:
There's unpleasant pop noise when headset is plugged in or removed from
GHS/Line-out jack.

* Fix:
Issue can be fixed by these four patches. All of them are accepted by
upstream.
- 4d4b0c52 - ALSA: hda/realtek - Add unplug function into unplug state
  of Headset Mode for ALC225
- d1dd4211 - ALSA: hda/realtek - Disable headset Mic VREF for headset
  mode of ALC225
- 136824ef - ALSA: hda/realtek - Add support headset mode for DELL
  WYSE AIO
- da484d00 - ALSA: hda/realtek - Add support headset mode for New
  DELL WYSE NB

* Testcase:
Connect/remove a headset to/from the jack and see if there's noise.

* Risk of Regression:
Low since these patches only affect specific platforms.

Kailang Yang (4):
  ALSA: hda/realtek - Add unplug function into unplug state of Headset
    Mode for ALC225
  ALSA: hda/realtek - Disable headset Mic VREF for headset mode of
    ALC225
  ALSA: hda/realtek - Add support headset mode for DELL WYSE AIO
  ALSA: hda/realtek - Add support headset mode for New DELL WYSE NB

 sound/pci/hda/patch_realtek.c | 44 ++++++++++++++++++++++++++++++++++-
 1 file changed, 43 insertions(+), 1 deletion(-)

-- 
2.20.1