Asoc: Intel: SST (CHT) regression in asoc/for-5.11

[Takashi Iwai]

On Tue, 01 Dec 2020 04:24:58 +0100,
Pierre-Louis Bossart wrote:
> 
> 
> 
> 
> > On 11/29/20 6:24 AM, Hans de Goede wrote:
> >> Hi All,
> >>
> >> To test the code to dynamically switch between SST/SOF support on BYT/CHT
> >> from the kernel commandline I merged:
> >>
> >> https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git/log/?h=for-5.11 
> >>
> >>
> >> Into my personal tree (mostly Linus' master + some pending patches from
> >> myself).
> >>
> >> After this I was getting the following errors in dmesg when using
> >> sound on
> >> a Medion E2228T laptop with a CHT SoC + NAU8824 codec:
> >>
> >> [   53.805205] intel_sst_acpi 808622A8:00: Wait timed-out
> >> condition:0x0, msg_id:0x1 fw_state 0
> >> [   53.805479] intel_sst_acpi 808622A8:00: fw returned err -16
> >> [   53.806281] sst-mfld-platform sst-mfld-platform: ASoC: PRE_PMD:
> >> pcm0_in event failed: -16
> >> [   54.829548] intel_sst_acpi 808622A8:00: Wait timed-out
> >> condition:0x0, msg_id:0x1 fw_state 0
> >> [   54.829596] intel_sst_acpi 808622A8:00: fw returned err -16
> >> [   54.829668] sst-mfld-platform sst-mfld-platform: ASoC: POST_PMD:
> >> media0_out event failed: -
> >> [   55.853230] intel_sst_acpi 808622A8:00: Wait timed-out
> >> condition:0x0, msg_id:0x1 fw_state 0
> >> [   55.853244] intel_sst_acpi 808622A8:00: fw returned err -16
> >> [   55.853269] sst-mfld-platform sst-mfld-platform: ASoC: POST_PMD:
> >> codec_out0 mix 0 event fai
> >> [   56.876435] intel_sst_acpi 808622A8:00: Wait timed-out
> >> condition:0x0, msg_id:0x1 fw_state 0
> >> [   56.876481] intel_sst_acpi 808622A8:00: fw returned err -16
> >> [   56.876563] sst-mfld-platform sst-mfld-platform: ASoC: POST_PMD:
> >> media0_out mix 0 event fai
> >> [   61.847455] intel_sst_acpi 808622A8:00: FW sent error response 0x40015
> >> [   61.847564] intel_sst_acpi 808622A8:00: fw returned err -1
> >> [   61.847659] sst-mfld-platform sst-mfld-platform: ASoC: error at
> >> snd_soc_dai_startup on ssp2
> >> [   61.847722]  SSP2-Codec: ASoC: BE open failed -1
> >> [   61.847754]  Audio Port: ASoC: failed to start some BEs -1
> >> [   61.847786] intel_sst_acpi 808622A8:00: FW sent error response 0x40006
> >> [   64.301284] intel_sst_acpi 808622A8:00: FW sent error response 0x90001
> >> [   64.301545] intel_sst_acpi 808622A8:00: not suspending FW!!, Err: -2
> >>
> >> Dropping the asoc/for-5.11 merge and just cherry-picking
> >> Pierre-Louis' changes
> >> for the dynamic switching makes these go away. So this seems to be
> >> caused by
> >> other changes in asoc/for-5.11.
> >>
> >> So any clues where to start looking for this, or should I just
> >> bisect this?
> >
> > Thanks for reporting this Hans.
> >
> > The only thing that comes to my mind is Morimoto-san's series which
> > modified snd_soc_dai_startup, but that was back in September and
> > should be in 5.10-rcX
> >
> > Will give it a try on my side as well.
> 
> I was able to reproduce this error with Mark's for-next branch on a
> CHT device w/ rt5640, and git bisect points to this commit:
> 
> a27b421f1d04b201c474a15ee1591919c81fb413 is the first bad commit
> commit a27b421f1d04b201c474a15ee1591919c81fb413
> Author: Ranjani Sridharan <ranjani.sridharan at linux.intel.com>
> Date:   Tue Nov 17 13:50:01 2020 -0800
> 
>     ASoC: pcm: call snd_soc_dapm_stream_stop() in soc_pcm_hw_clean
> 
>     Currently, the SND_SOC_DAPM_STREAM_START event is sent during
>     pcm_prepare() but the SND_SOC_DAPM_STREAM_STOP event is
>     sent only in dpcm_fe_dai_shutdown() after soc_pcm_close().
>     This results in an imbalance between when the DAPM widgets
>     receive the PRE/POST_PMU/PMD events. So call
>     snd_soc_dapm_stream_stop() in soc_pcm_hw_clean() before the
>     snd_soc_pcm_component_hw_free() to keep the stream_stop DAPM
>     event balanced with the stream_start event in soc_pm_prepare().
> 
>     Also, in order to prevent duplicate DAPM stream events,
>     remove the call for DAPM STREAM_START event in dpcm_fe_dai_prepare()
>     and the call for DAPM STREAM_STOP event in dpcm_fe_dai_shutdown().
> 
>     Reviewed-by: Bard Liao <yung-chuan.liao at linux.intel.com>
>     Reviewed-by: Pierre-Louis Bossart
> <pierre-louis.bossart at linux.intel.com>
>     Signed-off-by: Ranjani Sridharan <ranjani.sridharan at linux.intel.com>
>     Link:
> https://lore.kernel.org/r/20201117215001.163107-1-ranjani.sridharan@linux.intel.com
>     Signed-off-by: Mark Brown <broonie at kernel.org>
> 
>  sound/soc/soc-pcm.c | 10 +++-------
>  1 file changed, 3 insertions(+), 7 deletions(-)
> 
> 
> I am not sure why this break the Atom/SST driver, this was reviewed
> and seemed legit - even required IIRC to deal with topology pipelines
> initialized on-demand. Reverting this patch restores functionality. I
> would guess it's the DAPM_STREAM_START that's now missing (or in the
> 'wrong' location) and causing issues?

Indeed the DAPM_START_STREAM call completely disappeared after the
patch, which looks very wrong.  This has to be revisited before 5.11
merge.


Takashi

> Hans, can you confirm if indeed this is the same issue on your devices?
> 
> Thanks
> -Pierre
>