[SRU][F/E/OEM-B-OSP1][PATCH 0/2] volume control doesn't work (it's just on/off) on Lenovo ThinkPad X1 Carbon 7th gen

[Hui Wang]

BugLink: https://bugs.launchpad.net/bugs/1845677

The 1st patch is already in the oem-b-osp1 kernel, only needs to
merge the 2nd patch.

For focal and eoan kernels, they need to merge 2 patches.

For bionic and oem-b kernels, because they don't support sof driver
and these 2 machines are dmic machines, so no need to merge these 2
patches.

[Impact]
There are 2 physical speakers on the X1 7th, and one is Bass speaker
and connect to a DAC which doesn't have volume control on it.

[Fix]
adjust that speaker to connect to a DAC which has volume control
capability.


[Test Case]
adjust the output volume from UI and play sound from speaker.


[Regression Risk]
Low, these change is specific to 2 lenovo machines.


Jaroslav Kysela (1):
  ALSA: hda - fixup for the bass speaker on Lenovo Carbon X1 7th gen

Kailang Yang (1):
  ALSA: hda/realtek - Add quirk for the bass speaker on Lenovo Yoga X1
    7th gen

 sound/pci/hda/patch_realtek.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

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2.17.1