On Wed, 03 Jun 2020 13:05:43 +0200, Jaroslav Kysela wrote: > > Dne 03. 06. 20 v 11:34 Takashi Iwai napsal(a): > > 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://github.com/alsa-project/alsa-ucm-conf/tree/master/ucm2/sof-hda-dsp > >>> > >>> 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://pastebin.ubuntu.com/p/4kprhDZYbg/ > > > > And that's an interesting case. Can we manage multiple cards in a > > single UCM profile? > > Yes, it should work, but we need to extend pulseaudio to avoid > fallback to the legacy ALSA profile when the "slave" soundcard is > enumerated. PA should skip this card. We need to check if the empty > UCM verb is supported. I suppose it's not only about PA, but in general we need to define how to deal with it. I can imagine to provide a UCM profile that is mapped to some dummy ops for the slave card, for example. > Also, UCM has ${CardId} substitution (for the master card config), but > we need to address the slave, too. Perhaps, we should add something > like ${GetCardIdByName:STRING[:INDEX]} where STRING may be the name of > the soundcard (it will be 'acp') in this case. The INDEX may refer to > multiple instances (INDEX = 0 first soundcard found). FWIW, I see a similar requirement for the recent change in USB-audio for Gigabyte Auros Master with AMD TRX40: it provides a front headphone output from a separate card while other I/Os are served by another card. It'd be handy if both can be combined. thanks, Takashi
