Re: ASoC: tas2783-sdw: calibration firmware not re-downloaded after s2idle resume (AMD ACP SoundWire, ASUS ProArt PX13)

[Mukunda,Vijendar]

On 27/07/26 13:43, Andrey Golovko wrote:
> oot cause #2: ACP SoundWire DMA config not reprogrammed on recovery
> --------------------------------------------------------------------
> Even with the cache fixed, sound only returns after the PCM is fully
> recreated (pactl profile off/on), not after a plain userspace resume.
> sound/soc/amd/ps/ps-sdw-dma.c advertises SNDRV_PCM_INFO_RESUME, so
> userspace issues TRIGGER_RESUME (or prepare without hw_params), while the
> ring-buffer registers (RINGBUFADDR/RINGBUFSIZE, watermark, IRQ masks) are
> only programmed in hw_params. The DMA is then started with unprogrammed
> registers: silence, followed by an XRUN. Intel does not set INFO_RESUME
> on SoundWire for exactly this reason.
>
> Dropping INFO_RESUME plus reprogramming the DMA config from .prepare
> still does not fully restore audio here, so something else is lost across
> the power gate on the ACP/manager side. I will post that part separately,
> with traces, addressed to the AMD folks - it does not belong in this
> codec thread.
++ 

@Andrey  Golovko: restoring the dma ring buffer reigsters, pte programming along
with
re-enabling irq mask will be done in acp70_restore_sdw_dma_config() function
which will
be invoked during resume sequence.

Could you please create Bugzilla ticket and attach dmesg logs?