snd_mixer_oss_test_id
kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
kcontrol = snd_mixer_oss_test_id(mixer, name, index);