On Thu, 23 Apr 2020 18:03:10 +0200, Cezary Rojewski wrote:
NHLT fetch based on _DSM prevents ACPI table override mechanism from being utilized. Make use of acpi_get_table to enable it and get rid of redundant code. In consequence, NHLT can be overridden just like any other ACPI table, e.g.: DSDT or SSDT.
Change has been verified on all Intel AVS architecture platforms, RVP and production laptops both.
Change possible due to addition of NHLT signature to the list of standard ACPI tables: https://patchwork.kernel.org/patch/11463235/
Override helps not only with debug purposes but also allows user for table adjustment when one found on their production hardware is invalid. Shared official NHLT spec is now available to community at: https://01.org/blogs/intel-smart-sound-technology-audio-dsp
NHLT support for iASL is still ongoing subject but should be available in nearest future.
Signed-off-by: Cezary Rojewski cezary.rojewski@intel.com
Applied to for-next branch now.
thanks,
Takashi