ASoC: SOF: Intel: hda: add quirks for HDAudio DMA position information

Browse source

The code inherited from the Skylake driver does not seem to follow any
known hardware recommendations.

The only two recommended options are
a) use DPIB registers if VC1 traffic is not allowed
b) use DPIB DDR update if VC1 traffic is used

In all of SOF-based updated, VC1 is not supported so we can 'safely'
move to using DPIB registers only.

This patch keeps the legacy code, in case there was an undocumented
issue lost to history, and adds the DPIB DDR update for additional
debug.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://lore.kernel.org/r/20211207193947.71080-6-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>

...

This commit is contained in:

Pierre-Louis Bossart 2021-12-07 13:39:45 -06:00 • committed by Mark Brown

parent ae81d8fd57

commit 288fad2f71

No known key found for this signature in database

GPG key ID: 24D68B725D5487D0

3 changed files with 75 additions and 26 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

86

sound/soc/sof/intel/hda-pcm.c

View file

9

sound/soc/sof/intel/hda.c

View file

6

sound/soc/sof/intel/hda.h

View file