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6dbe662874
Added CONFIG_SND_AC97_POWER_SAVE kernel config to enable the support of aggressive AC97 power-saving mode. In this mode, the AC97 powerdown register bits are dynamically controlled at each open/close of PCM streams. The mode is activated via power_save option for snd-ac97-codec driver. As default it's off. It can be turned on/off on the fly via sysfs, too. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
116 lines
2.9 KiB
Text
116 lines
2.9 KiB
Text
# ALSA generic drivers
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menu "Generic devices"
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depends on SND!=n
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config SND_MPU401_UART
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tristate
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select SND_RAWMIDI
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config SND_OPL3_LIB
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tristate
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select SND_TIMER
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select SND_HWDEP
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config SND_OPL4_LIB
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tristate
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select SND_TIMER
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select SND_HWDEP
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config SND_VX_LIB
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tristate
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select SND_HWDEP
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select SND_PCM
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config SND_AC97_CODEC
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tristate
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select SND_PCM
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select SND_AC97_BUS
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config SND_AC97_BUS
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tristate
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config SND_DUMMY
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tristate "Dummy (/dev/null) soundcard"
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depends on SND
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select SND_PCM
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help
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Say Y here to include the dummy driver. This driver does
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nothing, but emulates various mixer controls and PCM devices.
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You don't need this unless you're testing the hardware support
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of programs using the ALSA API.
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To compile this driver as a module, choose M here: the module
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will be called snd-dummy.
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config SND_VIRMIDI
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tristate "Virtual MIDI soundcard"
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depends on SND_SEQUENCER
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select SND_TIMER
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select SND_RAWMIDI
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help
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Say Y here to include the virtual MIDI driver. This driver
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allows to connect applications using raw MIDI devices to
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sequencer clients.
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If you don't know what MIDI is, say N here.
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To compile this driver as a module, choose M here: the module
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will be called snd-virmidi.
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config SND_MTPAV
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tristate "MOTU MidiTimePiece AV multiport MIDI"
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depends on SND
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select SND_RAWMIDI
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help
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To use a MOTU MidiTimePiece AV multiport MIDI adapter
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connected to the parallel port, say Y here and make sure that
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the standard parallel port driver isn't used for the port.
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To compile this driver as a module, choose M here: the module
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will be called snd-mtpav.
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config SND_SERIAL_U16550
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tristate "UART16550 serial MIDI driver"
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depends on SND
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select SND_RAWMIDI
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help
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To include support for MIDI serial port interfaces, say Y here
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and read <file:Documentation/sound/alsa/serial-u16550.txt>.
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This driver works with serial UARTs 16550 and better.
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This driver accesses the serial port hardware directly, so
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make sure that the standard serial driver isn't used or
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deactivated with setserial before loading this driver.
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To compile this driver as a module, choose M here: the module
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will be called snd-serial-u16550.
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config SND_MPU401
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tristate "Generic MPU-401 UART driver"
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depends on SND
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select SND_MPU401_UART
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help
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Say Y here to include support for MIDI ports compatible with
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the Roland MPU-401 interface in UART mode.
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To compile this driver as a module, choose M here: the module
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will be called snd-mpu401.
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config SND_AC97_POWER_SAVE
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bool "AC97 Power-Saving Mode"
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depends on SND_AC97_CODEC && EXPERIMENTAL
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default n
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help
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Say Y here to enable the aggressive power-saving support of
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AC97 codecs. In this mode, the power-mode is dynamically
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controlled at each open/close.
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The mode is activated by passing power_save=1 option to
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snd-ac97-codec driver. You can toggle it dynamically over
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sysfs, too.
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endmenu
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