On Thu, 2015-04-02 at 07:24 +0800, Raymond Yau wrote:
I've added a few others on the CC that would be interested.
My understanding is that a UCM device can represent a thing
that has
both input and output (I don't particularly like that, but
it's too late
to complain).
Yes, but it can also represent simplex devices too e.g. "Headset-Speakers" and "Headset-Mic". There are not any hard
rules here,
but most examples are using duplex devices as historically UCM
came from
the phone ecosystem use cases.
On some mobile phones which have FM radio , how do UCM handle FM radio since it need to use the headphone as antenna ?
This use case is just treated like any other where we have to set the proper kcontrols and devices in the UCM config. This would include the headphone if required for audio playback or antenna.
Liam