[alsa-devel] [PATCH v1 0/5] ALSA: hda - Add DP-MST support for NVIDIA codecs

[Nikhil Mahale]

On 11/14/19 4:08 PM, Takashi Iwai wrote:
> On Thu, 14 Nov 2019 04:36:59 +0100,
> Nikhil Mahale wrote:
>>
>> Today, DisplayPort multi-stream transport (DP-MST) audio is not
>> supported on codec drivers which don't use the audio component
>> (acomp) binding.
>>
>> The commit ade49db337a9 (ALSA: hda/hdmi - Allow audio component for
>> AMD/ATI and Nvidia HDMI) added the DRM audio component binding for
>> the NVIDIA codec drivers, but the traditional HD-audio unsolicited
>> event code path is still in use by the proprietary NVIDIA graphics
>> driver.
>>
>> This patch set adds DP-MST audio support for non-acomp codec drivers
>> which use the traditional HD-audio unsolicited event code path. This
>> patch set adds DP-MST support for NVIDIA codecs.
>>
>> The patch set has been tested for HDMI/DP-SST/DP-MST(4 dp-mst audio
>> streams) configurations on NVIDIA Kepler and Maxwell GPUs, using
>> both the nouveau driver and the proprietary NVIDIA graphics driver.
> 
> Thanks for the patch.  The logic looks good, but there are a few
> concerns in implementation details.  Will comment in the reply of each
> patch.

Thanks Takashi, I am sending out 2nd version of patch set in which
I tried to address you concerned.

Thanks,
Nikhil Mahale

> The timing is a bit late for merging into 5.5, though, for this kind
> of non-trivial changes.  It'll be likely applied after 5.5 merge
> window, so for 5.6.
> 
> 
> Takashi
> 

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