This patchset is provided as an RFC and should not be merged as is (Turkey break in the USA and more validation needed). This is however a good time to gather comments. This work is the result of multiple email discussions to finally provide more flexibility for distributions to chose whether to stick with the legacy HDaudio driver or to enable the SST/Skylake driver for newer platforms (required e.g. for digital microphone support)
The patches add support for CoffeeLake, simplify the probe for the Skylake driver, introduce more compile-time granularity so that platforms can be selected individually and last provide a dynamic fallback mechanism when two drivers are registered for the same PCI ID.
When the SOF driver is released, the same mechanism will be used to enable the SOF-legacy fallback. There will be no plans to enable an SOF->SST falback.
Pierre-Louis Bossart (4): ASoC: Intel: Skylake: stop init/probe if DSP is not present ASoC: Intel: Skylake: remove useless tests on DSP presence ASoC: Intel: Skylake: Add more platform granularity ALSA: hda: add fallback capabilities for SKL+ platforms
Takashi Iwai (2): ASoC: Intel: Skylake: Add CFL-S support ALSA: hda: Allow fallback binding with legacy HD-audio for Intel SKL+
include/sound/hdaudio.h | 6 + sound/pci/hda/Kconfig | 40 +++++++ sound/pci/hda/hda_controller.h | 2 +- sound/pci/hda/hda_intel.c | 51 ++++++-- sound/soc/intel/Kconfig | 86 ++++++++++++-- sound/soc/intel/boards/Kconfig | 16 ++- sound/soc/intel/skylake/skl-messages.c | 8 ++ sound/soc/intel/skylake/skl.c | 154 +++++++++++++++++++------ 8 files changed, 311 insertions(+), 52 deletions(-)