On Sat, 24 Mar 2018 03:25:23 +0100, Andrew Chant wrote: > > This implements UAC2 jack detection support, presenting > jack status as a boolean read-only mono mixer. > > The presence of any channel in the UAC2_TE_CONNECTOR > control for a terminal will result in the mixer saying > the jack is connected. > > Mixer naming follows the convention in sound/core/ctljack.c, > terminating the mixer with " Jack". > For additional clues as to which jack is being presented, > the name is prefixed with " - Input Jack" or " - Output Jack" > depending on if it's an input or output terminal. > > This is required because terminal names are ambiguous > between inputs and outputs and often duplicated - > Bidirectional terminal types (0x400 -> 0x4FF) > "... may be used separately for input only or output only. > These types require two Terminal descriptors. Both have the same type." > (quote from "USB Device Class Definition for Terminal Types") > > Since bidirectional terminal types are common for headphone adapters, > this distinguishes between two otherwise identically-named > jack controls. > > Tested with a UAC2 audio device with connector control capability. > > Signed-off-by: Andrew Chant <achant@xxxxxxxxxx> Applied now, thanks. Takashi _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
