/usr/src/linux-headers-5.15.0-190/sound/firewire/fireface
Edit: /usr/src/linux-headers-5.15.0-190/sound/firewire/fireface/Makefile (251B)
# SPDX-License-Identifier: GPL-2.0-only
snd-fireface-objs := ff.o ff-transaction.o ff-midi.o ff-proc.o amdtp-ff.o \
ff-stream.o ff-pcm.o ff-hwdep.o ff-protocol-former.o \
ff-protocol-latter.o
obj-$(CONFIG_SND_FIREFACE) += snd-fireface.o