On 5/7/24 14:51, Wesley Cheng wrote: > In order to allow userspace/applications know about USB offloading status, > expose a sound kcontrol that fetches information about which sound card > index is associated with the ASoC platform card supporting offloading. In > the USB audio offloading framework, the ASoC BE DAI link is the entity > responsible for registering to the SOC USB layer. SOC USB will expose more > details about the current offloading status, which includes the USB sound > card and USB PCM device indexes currently being used. > > It is expected for the USB offloading driver to add the kcontrol to the > sound card associated with the USB audio device. An example output would > look like: > > tinymix -D 1 get 'USB Offload Playback Capable Card' > 0 (range -1->32) You already gave the following examples in patch 29: " USB offloading idle: tinymix -D 0 get 'USB Offload Playback Route Status' -->-1, -1 (range -1->32) USB offloading active(USB card#1 pcm#0): tinymix -D 0 get 'USB Offload Playback Route Status' -->1, 0 (range -1->32) " Can you clarify how many controls there would be in the end? Also isn't tinymix -D N going to give you the controls for card N?
