Re: [alsa-devel] Need general idea how to architect driver for multi-codec board

On Wed, May 11, 2011 at 10:31:15AM -0700, Caleb Crome wrote:

1. Simply instantiate multiple TLV320IAC33 codec drivers, as the AIC33

driver is already written.

Yes.

This seems like it won't work because I'd end up with multiple

user-space 'cards', yet I want the card to appear as a single 16-channel sound card. Also, when you start one PCM interface for one codec, they

No, you shouldn't. You'll end up with a single card.

would all start automatically, which I imagine the linux system wouldn't get. Also, the PCM interface needs to be configured differently for each codec (the TDM offset must be 0, 16, 32, 48, etc. bits).

The TDM stuff should be configured with the existing TDM API (you may need to implement this in the CODEC driver).