[Sound-open-firmware] about SOF 1.2 topology support

[Liam Girdwood]

On Mon, 2018-05-28 at 18:24 +0800, Keyon Jie wrote:
> Hi Liam,
> 
> During enabling #1, I found that we may need create snd_soc_dai_driver 
> dynamically, currently we only have one cpu_dai for SOF, how do you 
> think we should change for multiple cpu_dai support, or we actually 
> don't need that?
> 
> Thanks,
> ~Keyon
> 
> /*
>   * SOF Device Level.
>   */
> struct snd_sof_dev {
> ...
> 	/* ASoC components */
> 	struct snd_soc_platform_driver plat_drv;
> 	const struct snd_soc_component_driver *cmpnt_drv;
> 	struct snd_soc_dai_driver dai_drv; //Liam: we have only one 	dai_
> driver 
> here.

The SOF DAI driver is a dummy type, so it has no logic, it's only used for
binding DAI links. i.e. it does not matter when used to bind SSP and DMICs.

> 	int num_dai; // Liam: so we can't support > 1 dais here?

Yes, untested.

> ...
> }
> 

Liam