[Sound-open-firmware] Backport of SOF driver to 5.2.9 fixes

[Ranjani Sridharan]

On Wed, 2019-09-18 at 14:55 +0000, Mark Pearson wrote:
> Hi SOF folks,
> 
> I've been able to address the issue I was seeing with 5.2.9 kernel
> and the SOF driver on our whiskeylake based system but would really
> appreciate a quick review from the experts to confirm that I've not
> missed anything important or add any extra insight.
> 
> The problem was seen on boot - the driver suspends and resumes a
> couple of times during boot and during the second resume failed to
> load the firmware (err -110). After that point the driver, and hence
> the audio, isn't useable.
> 
> I backported these commits to address the problem:
> 
https://github.com/thesofproject/linux/commit/bf705eaa7ce07f9c132f8e367fc2fc46b7842528#diff-cea2d94f890861b7634fd37c0b28f5e1
>  
> 
https://github.com/thesofproject/linux/commit/64632de9140e52b72781fefe542314db7cd29d8c#diff-cea2d94f890861b7634fd37c0b28f5e1
>  
> 
https://github.com/thesofproject/linux/commit/7623ae793c28cc0928c5d1292542dbb92fc2e9e2#diff-8f8468b53f48ad4bb215687e90b21d04
>  
> 
https://github.com/thesofproject/linux/commit/f5dbba9fee801f4678a50d92c785f7f24d4ee2c6#diff-8f8468b53f48ad4bb215687e90b21d04
> 
https://github.com/thesofproject/linux/commit/bb1ea3b31c28a131a5f5a50dd325198645526b19#diff-cea2d94f890861b7634fd37c0b28f5e1
> 
> We're still doing some testing to get confidence the fix is correct
> and stable but so far it looks good - everything is working.
Hi Mark,
All of the above changes are related to the HDA Link DMA programming
changes that were made a few months ago. These changes work only with
FW ABI version 3.8+.

I'd also take these as they were part of the original series and a
couple of bug fixes later on:

ASoC: SOF: hda: reserve host DMA channel for hostless streams
ASoC: SOF: hda: couple host and link DMA during FE hw_free
ASoC: SOF: hda: fix link DMA config
ASoC: SOF: hda: fix stream id setting

Thanks,
Ranjani




> 
> Thanks
> Mark
> _______________________________________________
> Sound-open-firmware mailing list
> Sound-open-firmware at alsa-project.org
> https://mailman.alsa-project.org/mailman/listinfo/sound-open-firmware