[alsa-devel] UCM questions

Liam Girdwood lrg at slimlogic.co.uk
Tue Jan 25 13:13:25 CET 2011

On Mon, 2011-01-24 at 14:31 -0800, pl bossart wrote:

> Most of my questions are not really on the abstraction but really on
> how to handle devices that can be plugged or may not be active at all
> times. USB, HDMI, Wireless/remote displays fall in this category. So
> on top of the traditional local headset/speakers, I can either have a
> variety of devices that can be used for the same use case. It's still
> not clear to me if I would need to create a set of new verbs
> (hifi_usb, hifi_hdmi) or if I can stick to the existing verbs and add
> a modifier?

You should stick to the existing verb and use a new device in most cases
above where your use case is the same but the output device is


Freelance Developer, SlimLogic Ltd
ASoC and Voltage Regulator Maintainer.

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