Curtis Malainey | Chrome OS Audio Senior Software Engineer | cujomalainey@xxxxxxxxxx | Sound Open Firmware Lead On Sat, Aug 26, 2023 at 4:31 AM Jaroslav Kysela <perex@xxxxxxxx> wrote: > > On 24. 08. 23 23:33, cujomalainey@xxxxxxxxxxxx wrote: > > From: Curtis Malainey <cujomalainey@xxxxxxxxxxxx> > > > > Provide a UCM value to mark devices which are needed to be opened only > > for HW purposes but should not be consumed for userspace. > > It would be probably better to describe this in the standard ALSA PCM API than > UCM. If the device is special, applications without UCM should be also allowed > to identify them. > > Jaroslav Would something like an additional device class and a format subclass be acceptable? Curtis
