597603d615
The snd-aloop module allows redirecting of the PCM playback in the kernel back to the user space using the standard ALSA PCM capture API. The module also allows time synchronization with another timing source and notifications of playback stream parameter changes. Signed-off-by: Jaroslav Kysela <perex@perex.cz>
205 lines
6.0 KiB
Plaintext
205 lines
6.0 KiB
Plaintext
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 AC97_BUS
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select SND_VMASTER
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menuconfig SND_DRIVERS
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bool "Generic sound devices"
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default y
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help
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Support for generic sound devices.
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if SND_DRIVERS
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config SND_PCSP
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tristate "PC-Speaker support (READ HELP!)"
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depends on PCSPKR_PLATFORM && X86 && HIGH_RES_TIMERS
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depends on INPUT
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depends on EXPERIMENTAL
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select SND_PCM
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help
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If you don't have a sound card in your computer, you can include a
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driver for the PC speaker which allows it to act like a primitive
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sound card.
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This driver also replaces the pcspkr driver for beeps.
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You can compile this as a module which will be called snd-pcsp.
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WARNING: if you already have a soundcard, enabling this
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driver may lead to a problem. Namely, it may get loaded
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before the other sound driver of yours, making the
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pc-speaker a default sound device. Which is likely not
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what you want. To make this driver play nicely with other
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sound driver, you can add this into your /etc/modprobe.conf:
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options snd-pcsp index=2
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You don't need this driver if you only want your pc-speaker to beep.
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You don't need this driver if you have a tablet piezo beeper
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in your PC instead of the real speaker.
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Say N if you have a sound card.
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Say M if you don't.
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Say Y only if you really know what you do.
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config SND_DUMMY
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tristate "Dummy (/dev/null) soundcard"
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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_ALOOP
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tristate "Generic loopback driver (PCM)"
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select SND_PCM
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help
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Say 'Y' or 'M' to include support for the PCM loopback device.
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This module returns played samples back to the user space using
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the standard ALSA PCM device. The devices are routed 0->1 and
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1->0, where first number is the playback PCM device and second
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number is the capture device. Module creates two PCM devices and
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configured number of substreams (see the pcm_substreams module
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parameter).
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The looback device allow time sychronization with an external
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timing source using the time shift universal control (+-20%
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of system time).
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To compile this driver as a module, choose M here: the module
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will be called snd-aloop.
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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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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_MTS64
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tristate "ESI Miditerminal 4140 driver"
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depends on PARPORT
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select SND_RAWMIDI
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help
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The ESI Miditerminal 4140 is a 4 In 4 Out MIDI Interface with
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additional SMPTE Timecode capabilities for the parallel port.
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Say 'Y' to include support for this device.
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To compile this driver as a module, chose 'M' here: the module
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will be called snd-mts64.
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config SND_SERIAL_U16550
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tristate "UART16550 serial MIDI driver"
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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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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_PORTMAN2X4
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tristate "Portman 2x4 driver"
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depends on PARPORT
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select SND_RAWMIDI
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help
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Say Y here to include support for Midiman Portman 2x4 parallel
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port MIDI device.
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To compile this driver as a module, choose M here: the module
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will be called snd-portman2x4.
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config SND_ML403_AC97CR
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tristate "Xilinx ML403 AC97 Controller Reference"
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depends on XILINX_VIRTEX
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select SND_AC97_CODEC
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help
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Say Y here to include support for the
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opb_ac97_controller_ref_v1_00_a ip core found in Xilinx' ML403
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reference design.
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To compile this driver as a module, choose M here: the module
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will be called snd-ml403_ac97cr.
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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
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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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config SND_AC97_POWER_SAVE_DEFAULT
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int "Default time-out for AC97 power-save mode"
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depends on SND_AC97_POWER_SAVE
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default 0
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help
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The default time-out value in seconds for AC97 automatic
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power-save mode. 0 means to disable the power-save mode.
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endif # SND_DRIVERS
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