On Tue, 13 Feb 2024 01:53:50 +0100, Wesley Cheng wrote: > > --- a/sound/soc/Kconfig > +++ b/sound/soc/Kconfig > @@ -76,6 +76,15 @@ config SND_SOC_UTILS_KUNIT_TEST > config SND_SOC_ACPI > tristate > > +config SND_SOC_USB > + bool "SoC based USB audio offloading" > + help > + Enable this option if an ASoC platform card has support to handle > + USB audio offloading. This enables the SoC USB layer, which will > + notifies the ASoC USB DPCM backend DAI link about available USB audio > + devices. Based on the notifications, sequences to enable the audio > + stream can be taken based on the design. This should be tristate, and... > --- a/sound/soc/Makefile > +++ b/sound/soc/Makefile > @@ -31,6 +31,10 @@ endif > > obj-$(CONFIG_SND_SOC_ACPI) += snd-soc-acpi.o > > +ifneq ($(CONFIG_SND_SOC_USB),) > +snd-soc-core-objs += soc-usb.o > +endif ... split it to an individual module, i.e.: snd-soc-usb-objs := soc-usb.o obj-$(CONFIG_SND_SOC_USB) += snd-soc-usb.o Otherwise it'll lead to a hard-dependency to snd-soc-core on snd-usb-audio, which is utterly unnecessary for most of other devices. thanks, Takashi
