alsa-project alsa-ucm : Audio endpoint is not switching when external mic connected

[Jaroslav Kysela]

Dne 03. 06. 20 v 12:58 Mukunda, Vijendar napsal(a):
> 
> 
>> -----Original Message-----
>> From: Takashi Iwai <tiwai at suse.de>
>> Sent: Wednesday, June 3, 2020 4:06 PM
>> To: Mukunda, Vijendar <Vijendar.Mukunda at amd.com>
>> Cc: Hui Wang <hui.wang at canonical.com>; Jaroslav Kysela <perex at perex.cz>;
>> alsa-devel at alsa-project.org
>> Subject: Re: alsa-project alsa-ucm : Audio endpoint is not switching when
>> external mic connected
>>
>> On Wed, 03 Jun 2020 12:32:41 +0200,
>> Mukunda, Vijendar wrote:
>>>
>>>
>>>
>>>> -----Original Message-----
>>>> From: Takashi Iwai <tiwai at suse.de>
>>>> Sent: Wednesday, June 3, 2020 3:05 PM
>>>> To: Hui Wang <hui.wang at canonical.com>
>>>> Cc: Jaroslav Kysela <perex at perex.cz>; Mukunda, Vijendar
>>>> <Vijendar.Mukunda at amd.com>; alsa-devel at alsa-project.org
>>>> Subject: Re: alsa-project alsa-ucm : Audio endpoint is not switching when
>>>> external mic connected
>>>>
>>>> On Wed, 03 Jun 2020 02:36:25 +0200,
>>>> Hui Wang wrote:
>>>>>
>>>>>
>>>>> On 2020/6/3 上午3:39, Jaroslav Kysela wrote:
>>>>>> Dne 02. 06. 20 v 19:57 Mukunda, Vijendar napsal(a):
>>>>>>> We recently up streamed ACP PDM driver for Renoir APU.
>>>>>>>
>>>>>>> Our ACP IP has an internal PDM Decoder block where DMIC is directly
>>>>>>> connected.
>>>>>>> There are no KControls defined for PDM Driver.
>>>>>>>
>>>>>>> Our platform supports on board DMIC and South bridge Azalia (HD
>>>>>>> Audio ) endpoint .
>>>>>>> By default, DMIC endpoint is used as audio input device.
>>>>>>> When Headset Mic jack connected, it's not switching to External Mic.
>>>>>>
>>>>>> Make sure that the Headset Mic priority port in pulseaudio is is
>>>>>> greater than the one for DMIC.
>>>>>>
>>>>>>> How does audio endpoint will switch in gnome when external mic is
>>>>>>> connected?
>>>>>>>>  From our understanding, UCM conf file for HDA driver is also
>>>>>>>> required for
>>>>>>> configuring mixer controls for HD Audio capture device.
>>>>>>> Similarly when External Mic is removed , it has to switch to
>>>>>>> internal dmic .
>>>>>>
>>>>>> An configuration example for UCM (DMIC connected to DSP, HDA codec
>>>>>> for rest):
>>>>>>
>>>>>>
>>>>
>> https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub
>>>> .com%2Falsa-project%2Falsa-ucm-conf%2Ftree%2Fmaster%2Fucm2%2Fsof-
>>>> hda-
>>>>
>> dsp&data=02%7C01%7CVijendar.Mukunda%40amd.com%7C5fbb3a516d5
>>>>
>> 24c73568d08d807a157a1%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C
>>>>
>> 0%7C637267736827671946&sdata=0aO7dbLATuW%2BIeJsjWoWCGOaYEO
>>>> WQaVwI9izppB3v7k%3D&reserved=0
>>>>>>
>>>>>> If you need a help to create a new configuration for your hardware,
>>>>>> show the output from the alsa-info.sh script, please.
>>>>>>
>>>>>>                      Jaroslav
>>>>>
>>>>> This audio design is  a bit different from sof-hda-dsp, the dmic is on
>>>>> a standalone sound card. Please see the alsa-info.txt:
>>>>>
>>>>>
>>>>
>> https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fpasteb
>>>>
>> in.ubuntu.com%2Fp%2F4kprhDZYbg%2F&data=02%7C01%7CVijendar.Mu
>>>>
>> kunda%40amd.com%7C5fbb3a516d524c73568d08d807a157a1%7C3dd8961fe4
>>>>
>> 884e608e11a82d994e183d%7C0%7C0%7C637267736827671946&sdata=Q
>>>> 50xNbF1KSqasNa0UyKzUFAzOc9KPIguBjgYHr1XSbg%3D&reserved=0
>>>>
>>>> And that's an interesting case.  Can we manage multiple cards in a
>>>> single UCM profile?
>>>>
>>>>
>>>> Takashi
>>>
>>> I am not much familiar with UCM files creation.
>>> As per my understanding, UCM entries will program the mixer controls
>>> depending up on the use case and selected device.
>>
>> UCM is more than that.  It manages which PCM device is chosen, which
>> jack control corresponds, etc, too.
>>
>>
>> Takashi
> 
> Got it. Could you help us to get the UCM file which will work for both sound cards for our platform.

Please, create a new issue with the mentioned alsa-info URL at github:

https://github.com/alsa-project/alsa-ucm-conf/issues

I'll give a look when my time permits.

					Jaroslav

-- 
Jaroslav Kysela <perex at perex.cz>
Linux Sound Maintainer; ALSA Project; Red Hat, Inc.