Dne 28. 12. 20 v 9:00 Hui Wang napsal(a): > We want to perform remote audio auto test, need the audio jack to > change from plugout to plugin or vice versa by software ways. > > Here the design is creating a sound-core root folder in the debugfs > dir, and each sound card will create a folder cardN under sound-core, > then the sound jack will create folders by jack_ctrl->ctrl->id.name, > and will create 2 file nodes jackin_inject and sw_inject_enable in > the folder, this is the layout of folder on a machine with 2 sound > cards: > $tree $debugfs_mount_dir/sound-core > sound-core/ > ├── card0 > │ ├── HDMI!DP,pcm=10 Jack > │ │ ├── jackin_inject > │ │ └── sw_inject_enable > + sound_core_debugfs_root = debugfs_create_dir("sound-core", NULL); I would just use "sound" directory name here. Why "core" suffix? Jaroslav -- Jaroslav Kysela <perex@xxxxxxxx> Linux Sound Maintainer; ALSA Project; Red Hat, Inc.