On 2020-03-09 17:48, Pierre-Louis Bossart wrote:
DRM is quite a tree, you got to be more specific. Tested with i915=m
and DRM=m. I hope we mean the same thing when mentioning 'race'. There
is an obvious initialization race between hda bus drv and i915 which
requires one to follow a tight operation order in order to not lose
i915 codec on hda link and thus be able to enumerate it properly.
I meant CONFIG_DRM=m, yes, thanks for the clarification.
With the DRM as module, it took more time to establish the
communication. That's probably changed if we do all the inits in a
workqueue now.
So, does the DRM=m & i915=m test satisfy you?
On top of that, as you mentioned (by the link) this series addresses
missing DMIC configuration in conjunction with HDA +/- iDisp AND
shields against no-NHLT configuration. On Dell XPS 9350 lack on of
NHLT was the biggest problem - that's why I'd like that issue not to
be forgotten about.
yes, but we don't want the driver to be auto-selected on SKL w/o DMICs,
since it'd break existing devices who don't have a topology file installed.
My patch does not touch any of kconfig stuff. I'd prefer anything that
goes into disable/enable kconfig bucket to be split into a separate
patch. Don't believe SKL somehow gets automatically selected on these.
On the machines I've tested fixes with, legacy HDaudio driver was the
primary option/ drv.
