On Fri, 24 Jan 2020 20:04:01 +0100, Cezary Rojewski wrote: > > This set of patches achieves few goals in order to enable data probing > feature for audio DSP. > > First, provide new and alter existing interfaces (page allocation, > runtime flow adjustments) to make them compress friendly. > > For HDA part, work has been done to account for compress streams when > servicing IRQs, setting up BDLs and assigning DMAs. > > Finally, the end goal which are the probe APIs and usage itself. Probes > can be treated as endpoints which allow for data extraction from or > injection to target module - a great ally when debugging problematic > audio issues such as distortions, glitches or gaps. > Compress streams are a weapon of choice here to provide a lightweight > implementation. > > While all available IPCs have been defined, current implementation > covers extraction only, with injection scheduled for a later date. > > Initial review and development of probes can be found under: > https://github.com/thesofproject/linux/pull/1276 > > with the hda-compress-enable set of patches being separated and > reviewed on: > https://github.com/thesofproject/linux/pull/1571 > > Tested on CML-U with rt5682 i2s board. > > Cezary Rojewski (12): > ALSA: hda: Allow for compress stream to hdac_ext_stream assignment > ALSA: hda: Prepare for compress stream support > ALSA: hda: Interrupt servicing and BDL setup for compress streams > ALSA: core: Expand DMA buffer information > ALSA: core: Implement compress page allocation and free routines For ALSA hda and core patches: Reviewed-by: Takashi Iwai <tiwai@xxxxxxx> thanks, Takashi _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx https://mailman.alsa-project.org/mailman/listinfo/alsa-devel
