ALSA: xen-front: Introduce Xen para-virtualized sound frontend driver

Introduce skeleton of the para-virtualized Xen sound
frontend driver.

Initial handling for Xen bus states: implement
Xen bus state machine for the frontend driver according to
the state diagram and recovery flow from sound para-virtualized
protocol: xen/interface/io/sndif.h.

Signed-off-by: Oleksandr Andrushchenko <[email protected]>
Reviewed-by: Juergen Gross <[email protected]>
Signed-off-by: Takashi Iwai <[email protected]>
This commit is contained in:
Oleksandr Andrushchenko 2018-05-14 09:27:37 +03:00 • committed by Takashi Iwai
commit cc3196ae19
6 changed files with 232 additions and 1 deletions

View file

@ -5,7 +5,7 @@
obj-$(CONFIG_SOUND) += soundcore.o
obj-$(CONFIG_DMASOUND) += oss/dmasound/
obj-$(CONFIG_SND) += core/ i2c/ drivers/ isa/ pci/ ppc/ arm/ sh/ synth/ usb/ \
firewire/ sparc/ spi/ parisc/ pcmcia/ mips/ soc/ atmel/ hda/ x86/
firewire/ sparc/ spi/ parisc/ pcmcia/ mips/ soc/ atmel/ hda/ x86/ xen/
obj-$(CONFIG_SND_AOA) += aoa/
# This one must be compilable even if sound is configured out