Re: [PATCH] ASoC: ti: Allocate dais dynamically for TDM and audio graph card
From: Tony Lindgren
Date: Fri Feb 21 2020 - 13:08:28 EST
* Peter Ujfalusi <peter.ujfalusi@xxxxxx> [200221 13:21]:
> Hi Tony,
> On 20/02/2020 22.15, Tony Lindgren wrote:
> > * Peter Ujfalusi <peter.ujfalusi@xxxxxx> [200220 14:16]:
> >> On 18/02/2020 23.16, Sebastian Reichel wrote:
> >>> I suppose in the end its a question if generic card can provide TDM
> >>> support.
> >> Sure it can, but can it handle the switching between the paths based on
> >> use cases?
> >> There should be machine level DAPM widgets to kick codec2codec (MDM6600
> >> - CPAC_voice for example) and also to make sure that when you switch
> >> between them the system is not going to get misconfigured.
> >> Switching between CPAC and BT route during call?
> >> Not allowing VoIP while on call, etc.
> > Well I guess the key thing to check here is if it's enough to
> > keep track of things in the cpcap codec driver. If cpcap is always
> > involved, that should be sufficient.
> The codec driver should keep track on what it can do, but should not
> start policing the outside world.
> The machine driver knows the connections and should tell the components
> on what to do.
OK that makes senes to me. So I guess now the question is if
we can maintain this state in snd-soc-audio-graph-card instead
of needing a custom machine driver.