HelenOS sources

hda_dev_add        54 uspace/drv/audio/hdaudio/hdaudio.c static errno_t hda_dev_add(ddf_dev_t *dev);
hda_dev_add        63 uspace/drv/audio/hdaudio/hdaudio.c 	.dev_add = &hda_dev_add,
HelenOS homepage, sources at GitHub