[Sound-open-firmware] HDMI audio not working on Up^2

[Pan, Xiuli]

>-----Original Message-----
>From: Sound-open-firmware [mailto:sound-open-firmware-bounces at alsa-
>project.org] On Behalf Of Liao, Bard
>Sent: Saturday, March 23, 2019 20:37
>To: Ranjani Sridharan <ranjani.sridharan at linux.intel.com>; Liam Girdwood
><liam.r.girdwood at linux.intel.com>; Pierre-Louis Bossart <pierre-
>louis.bossart at linux.intel.com>; Guennadi Liakhovetski
><guennadi.liakhovetski at linux.intel.com>; sound-open-firmware at alsa-
>project.org
>Subject: Re: [Sound-open-firmware] HDMI audio not working on Up^2
>
>> -----Original Message-----
>> From: Sound-open-firmware [mailto:sound-open-firmware-bounces at alsa-
>> project.org] On Behalf Of Ranjani Sridharan
>> Sent: Saturday, March 23, 2019 4:39 AM
>> To: Liam Girdwood <liam.r.girdwood at linux.intel.com>; Pierre-Louis Bossart
>> <pierre-louis.bossart at linux.intel.com>; Guennadi Liakhovetski
>> <guennadi.liakhovetski at linux.intel.com>; sound-open-firmware at alsa-
>> project.org
>> Subject: Re: [Sound-open-firmware] HDMI audio not working on Up^2
>>
>> On Fri, 2019-03-22 at 15:04 +0000, Liam Girdwood wrote:
>> > On Fri, 2019-03-22 at 09:49 -0500, Pierre-Louis Bossart wrote:
>> > > > I tried to test HDMI audio on Up^2 and hdac_hdmi_set_hw_params()
>> > > > is failing with -ENODEV because no port is assigned. Some very
>> > > > light analysis and debugging showed, that hdac_hdmi_pcm_open()
>> > > > hasn't been called, but it might wrong. Are there any non-trivial
>> > > > requirements to use HDMI audio on Up^2? Can it be, that my monitor
>> > > > or my cable aren't good enough?
>> > >
>> > > You need to set the PortN-PinM mixers, otherwise the hw_params will
>> > > fail. It's super painful and I don't know why it's needed but that's
>> > > what it is for now.
>> > > I typically look for the dmesg, find out which port is not
>> > > disconnected, and usually set Port6Pin0 to 1, then use hw:0,1 to get
>> > > things to play.
>> > > I don't have the hardware with me so can't provide better advice.
>> > > Also please use the dapm graph tool to make use everything is setup
>> > > correctly.
>> >
>> > Guennadi, could you document this on sof-docs with a paragraph and
>> > your example config / changes. Nothing long needed, just enough to
>> > point others in the correct direction.
>> Guennadi,
>>
>> here're my pin/port settings:
>> Pin5-Port0/1/2 to cvt2
>> Pin6-Port0/1/2 to cvt3
>> Pin7-Port0/1/2 to cvt4
>

Actually the PinX-PortX is something need to be set within the hdmi-codec. The codec need some route setting. The Pin6-Port0 will be default one if you are using HDMI connection. If you are using DP or other port, change the Pin accordingly. Now take HMDI with Pin6 as example:

If you would like to test with HDMI 1/2/3. Please set 
Pin6-Port0 to cvt2/cvt3/cvt3 and test one by one. (1 => cvt2, 2 => cvt3, 3=>cvt4)

If you would like to use MST-HUB, you need to set 
Pin6-Port0/1/2 to cvt2/cvt3/cvt3. Then you can play each on each monitor with different HDMI PCM FE.

Thanks
Xiuli

>Usually, I set all pin and ports to the same cvt eg cvt2.
>So I can open the same device eg -Dhw:0,2 no matter what pin/port
>does the HDMI actually connect to.
>
>>
>> And as Liam mentioned SOF master has a regression that still causes a failure.
>> But you could try the cml-003-drop-stable branch for now and it should work.
>>
>> Thanks,
>> Ranjani
>>
>> >
>> > Thanks
>> >
>> > Liam
>> >
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