linux/sound/drivers/Kconfig
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   1config SND_MPU401_UART
   2        tristate
   3        select SND_RAWMIDI
   4
   5config SND_OPL3_LIB
   6        tristate
   7        select SND_TIMER
   8        select SND_HWDEP
   9
  10config SND_OPL4_LIB
  11        tristate
  12        select SND_TIMER
  13        select SND_HWDEP
  14
  15config SND_VX_LIB
  16        tristate
  17        select SND_HWDEP
  18        select SND_PCM
  19
  20config SND_AC97_CODEC
  21        tristate
  22        select SND_PCM
  23        select AC97_BUS
  24        select SND_VMASTER
  25
  26menuconfig SND_DRIVERS
  27        bool "Generic sound devices"
  28        default y
  29        help
  30          Support for generic sound devices.
  31  
  32if SND_DRIVERS
  33
  34config SND_PCSP
  35        tristate "PC-Speaker support (READ HELP!)"
  36        depends on PCSPKR_PLATFORM && X86 && HIGH_RES_TIMERS
  37        depends on INPUT
  38        depends on EXPERIMENTAL
  39        select SND_PCM
  40        help
  41          If you don't have a sound card in your computer, you can include a
  42          driver for the PC speaker which allows it to act like a primitive
  43          sound card.
  44          This driver also replaces the pcspkr driver for beeps.
  45
  46          You can compile this as a module which will be called snd-pcsp.
  47
  48          WARNING: if you already have a soundcard, enabling this
  49          driver may lead to a problem. Namely, it may get loaded
  50          before the other sound driver of yours, making the
  51          pc-speaker a default sound device. Which is likely not
  52          what you want. To make this driver play nicely with other
  53          sound driver, you can add this in a configuration file under
  54          /etc/modprobe.d/ directory:
  55          options snd-pcsp index=2
  56
  57          You don't need this driver if you only want your pc-speaker to beep.
  58          You don't need this driver if you have a tablet piezo beeper
  59          in your PC instead of the real speaker.
  60
  61          Say N if you have a sound card.
  62          Say M if you don't.
  63          Say Y only if you really know what you do.
  64
  65config SND_DUMMY
  66        tristate "Dummy (/dev/null) soundcard"
  67        select SND_PCM
  68        help
  69          Say Y here to include the dummy driver.  This driver does
  70          nothing, but emulates various mixer controls and PCM devices.
  71
  72          You don't need this unless you're testing the hardware support
  73          of programs using the ALSA API.
  74
  75          To compile this driver as a module, choose M here: the module
  76          will be called snd-dummy.
  77
  78config SND_ALOOP
  79        tristate "Generic loopback driver (PCM)"
  80        select SND_PCM
  81        help
  82          Say 'Y' or 'M' to include support for the PCM loopback device.
  83          This module returns played samples back to the user space using
  84          the standard ALSA PCM device. The devices are routed 0->1 and
  85          1->0, where first number is the playback PCM device and second
  86          number is the capture device. Module creates two PCM devices and
  87          configured number of substreams (see the pcm_substreams module
  88          parameter).
  89
  90          The looback device allow time sychronization with an external
  91          timing source using the time shift universal control (+-20%
  92          of system time).
  93
  94          To compile this driver as a module, choose M here: the module
  95          will be called snd-aloop.
  96
  97config SND_VIRMIDI
  98        tristate "Virtual MIDI soundcard"
  99        depends on SND_SEQUENCER
 100        select SND_TIMER
 101        select SND_RAWMIDI
 102        help
 103          Say Y here to include the virtual MIDI driver.  This driver
 104          allows to connect applications using raw MIDI devices to
 105          sequencer clients.
 106
 107          If you don't know what MIDI is, say N here.
 108
 109          To compile this driver as a module, choose M here: the module
 110          will be called snd-virmidi.
 111
 112config SND_MTPAV
 113        tristate "MOTU MidiTimePiece AV multiport MIDI"
 114        select SND_RAWMIDI
 115        help
 116          To use a MOTU MidiTimePiece AV multiport MIDI adapter
 117          connected to the parallel port, say Y here and make sure that
 118          the standard parallel port driver isn't used for the port.
 119
 120          To compile this driver as a module, choose M here: the module
 121          will be called snd-mtpav.
 122
 123config SND_MTS64
 124        tristate "ESI Miditerminal 4140 driver"
 125        depends on PARPORT
 126        select SND_RAWMIDI
 127        help
 128          The ESI Miditerminal 4140 is a 4 In 4 Out MIDI Interface with 
 129          additional SMPTE Timecode capabilities for the parallel port.
 130
 131          Say 'Y' to include support for this device.
 132
 133          To compile this driver as a module, chose 'M' here: the module 
 134          will be called snd-mts64.
 135
 136config SND_SERIAL_U16550
 137        tristate "UART16550 serial MIDI driver"
 138        select SND_RAWMIDI
 139        help
 140          To include support for MIDI serial port interfaces, say Y here
 141          and read <file:Documentation/sound/alsa/serial-u16550.txt>.
 142          This driver works with serial UARTs 16550 and better.
 143
 144          This driver accesses the serial port hardware directly, so
 145          make sure that the standard serial driver isn't used or
 146          deactivated with setserial before loading this driver.
 147
 148          To compile this driver as a module, choose M here: the module
 149          will be called snd-serial-u16550.
 150
 151config SND_MPU401
 152        tristate "Generic MPU-401 UART driver"
 153        select SND_MPU401_UART
 154        help
 155          Say Y here to include support for MIDI ports compatible with
 156          the Roland MPU-401 interface in UART mode.
 157
 158          To compile this driver as a module, choose M here: the module
 159          will be called snd-mpu401.
 160
 161config SND_PORTMAN2X4
 162        tristate "Portman 2x4 driver"
 163        depends on PARPORT
 164        select SND_RAWMIDI
 165        help
 166          Say Y here to include support for Midiman Portman 2x4 parallel
 167          port MIDI device.
 168
 169          To compile this driver as a module, choose M here: the module
 170          will be called snd-portman2x4.
 171
 172config SND_ML403_AC97CR
 173        tristate "Xilinx ML403 AC97 Controller Reference"
 174        depends on XILINX_VIRTEX
 175        select SND_AC97_CODEC
 176        help
 177          Say Y here to include support for the
 178          opb_ac97_controller_ref_v1_00_a ip core found in Xilinx's ML403
 179          reference design.
 180
 181          To compile this driver as a module, choose M here: the module
 182          will be called snd-ml403_ac97cr.
 183
 184config SND_AC97_POWER_SAVE
 185        bool "AC97 Power-Saving Mode"
 186        depends on SND_AC97_CODEC
 187        default n
 188        help
 189          Say Y here to enable the aggressive power-saving support of
 190          AC97 codecs.  In this mode, the power-mode is dynamically
 191          controlled at each open/close.
 192
 193          The mode is activated by passing 'power_save=X' to the
 194          snd-ac97-codec driver module, where 'X' is the time-out
 195          value, a nonnegative integer that specifies how many
 196          seconds of idle time the driver must count before it may
 197          put the AC97 into power-save mode;  a value of 0 (zero)
 198          disables the use of this power-save mode.
 199
 200          After the snd-ac97-codec driver module has been loaded,
 201          the 'power_save' parameter can be set via sysfs as follows:
 202
 203            echo 10 > /sys/module/snd_ac97_codec/parameters/power_save
 204
 205          In this case, the time-out is set to 10 seconds; setting
 206          the time-out to 1 second (the minimum activation value)
 207          isn't recommended because many applications try to reopen
 208          the device frequently.  A value of 10 seconds would be a
 209          good choice for normal operations.
 210
 211          See Documentation/sound/alsa/powersave.txt for more details.
 212
 213config SND_AC97_POWER_SAVE_DEFAULT
 214        int "Default time-out for AC97 power-save mode"
 215        depends on SND_AC97_POWER_SAVE
 216        default 0
 217        help
 218          The default time-out value in seconds for AC97 automatic
 219          power-save mode.  0 means to disable the power-save mode.
 220
 221          See SND_AC97_POWER_SAVE for more details.
 222
 223endif   # SND_DRIVERS
 224
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