JackHWMute is used to list devices that get forcibly muted by a particular jack. We mark ports unavailable based on that information.
38e81f4 ucm: Add support for "JackHWMute"
src/modules/alsa/alsa-mixer.c | 52 ++++++++++++++++++++++++++++
src/modules/alsa/alsa-mixer.h | 2 ++
src/modules/alsa/alsa-ucm.c | 76 +++++++++++++++++++++++++++++++++++++++++
src/modules/alsa/alsa-ucm.h | 4 +++
4 files changed, 134 insertions(+)
Upstream: cgit.freedesktop.org