Re: [alsa-devel] [PATCH 5/5] ASoC: The soc card can have auxiliary components

On Tue, Dec 15, 2015 at 04:06:14PM +0800, Mengdong Lin wrote:

I still have some basic questions:

1. What are the typical usages for aux_dev? For CODEC<->CODEC link or external headset detection chip?

Neither, it's for analogue devices.

2. Why we need the rtd array 'rtd_aux' for the aux_devs? If the codec has DAIs and used by a DAI link, the ASoC will create a rtd

for the link.

There are (or were at the time) assumptions in drivers that there will be a rtd there so it was easier to provide a stub.