1d5ac70f0Sopenharmony_ci@startuml
2d5ac70f0Sopenharmony_cititle "UCM sequence boot order (using udev and alsactl)"
3d5ac70f0Sopenharmony_ci
4d5ac70f0Sopenharmony_cistart
5d5ac70f0Sopenharmony_ci:Sound card detected (udev);
6d5ac70f0Sopenharmony_ci:UCM: FixedBootSequence;
7d5ac70f0Sopenharmony_ciif (Card state (/var/lib/alsa/asound.state)) then (not present)
8d5ac70f0Sopenharmony_ci  :UCM: BootSequence;
9d5ac70f0Sopenharmony_cielse (present)
10d5ac70f0Sopenharmony_ci  :alsactl: Restore state (from asound.state);
11d5ac70f0Sopenharmony_ciendif
12d5ac70f0Sopenharmony_ci:Standard sound card use (with or without UCM);
13d5ac70f0Sopenharmony_ci:Save sound card state (asound.state);
14d5ac70f0Sopenharmony_ci:Sound card detached;
15d5ac70f0Sopenharmony_cistop
16d5ac70f0Sopenharmony_ci
17d5ac70f0Sopenharmony_ci@enduml
18