acrn-kernel/sound/ppc/Kconfig

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# ALSA PowerMac drivers
menu "ALSA PowerMac devices"
depends on SND!=n && PPC
comment "ALSA PowerMac requires I2C"
depends on SND && I2C=n
comment "ALSA PowerMac requires INPUT"
depends on SND && INPUT=n
config SND_POWERMAC
tristate "PowerMac (AWACS, DACA, Burgundy, Tumbler, Keywest)"
depends on SND && I2C && INPUT && PPC_PMAC
select SND_PCM
help
Say Y here to include support for the integrated sound device.
To compile this driver as a module, choose M here: the module
will be called snd-powermac.
config SND_POWERMAC_AUTO_DRC
bool "Toggle DRC automatically at headphone/line plug-in"
depends on SND_POWERMAC
default y
help
Say Y here to enable the automatic toggle of DRC (dynamic
range compression) on Tumbler/Snapper.
If this feature is enabled, DRC is turned off when the
headphone/line jack is plugged, and turned on when unplugged.
Note that you can turn on/off DRC manually even without this
option.
endmenu