[alsa-devel] [PATCH 03/13] ASoC: topology: ABI - Define DPCM trigger ordering for PCM

[Mengdong Lin]

On 08/24/2016 01:41 AM, Mark Brown wrote:
> On Fri, Aug 19, 2016 at 06:12:55PM +0800, mengdong.lin at linux.intel.com wrote:
>
>> Definition of dynamic PCM trigger ordering is exposed to uapi asoc.h,
>> and topology allows user space to define the trigger ordering for PCM
>> (FE links).
>
> This seems *incredibly* implementation specific.  Why wouldn't the
> driver for the thing implementing the topology be able to figure out the
> ordering here?  What's the use case?  What happens when we change away
> from DPCM?
>

I'll check if we can let driver figure out this ordering or use some 
more generic name.

We add this trigger ordering as driver developer request and we think 
it's decided by the firmware behavior. We hope firmware properties can 
be covered by topology.

Thanks
Mengdong