Subversion Repositories or1k_soc_on_altera_embedded_dev_kit

# ALSA soundcard-configuration

config SND_TIMER

        tristate

        depends on SND

config SND_PCM

        tristate

        select SND_TIMER

        depends on SND

config SND_HWDEP

        tristate

        depends on SND

config SND_RAWMIDI

        tristate

        depends on SND

config SND_SEQUENCER

        tristate "Sequencer support"

        depends on SND

        select SND_TIMER

        help

          Say Y or M to enable MIDI sequencer and router support.  This

          feature allows routing and enqueueing of MIDI events.  Events

          can be processed at a given time.

          Many programs require this feature, so you should enable it

          unless you know what you're doing.

config SND_SEQ_DUMMY

        tristate "Sequencer dummy client"

        depends on SND_SEQUENCER

        help

          Say Y here to enable the dummy sequencer client.  This client

          is a simple MIDI-through client: all normal input events are

          redirected to the output port immediately.

          You don't need this unless you want to connect many MIDI

          devices or applications together.

          To compile this driver as a module, choose M here: the module

          will be called snd-seq-dummy.

config SND_OSSEMUL

        bool

        depends on SND

config SND_MIXER_OSS

        tristate "OSS Mixer API"

        depends on SND

        select SND_OSSEMUL

        help

          To enable OSS mixer API emulation (/dev/mixer*), say Y here

          and read .

          Many programs still use the OSS API, so say Y.

          To compile this driver as a module, choose M here: the module

          will be called snd-mixer-oss.

config SND_PCM_OSS

        tristate "OSS PCM (digital audio) API"

        depends on SND

        select SND_OSSEMUL

        select SND_PCM

        help

          To enable OSS digital audio (PCM) emulation (/dev/dsp*), say Y

          here and read .

          Many programs still use the OSS API, so say Y.

          To compile this driver as a module, choose M here: the module

          will be called snd-pcm-oss.

config SND_PCM_OSS_PLUGINS

        bool "OSS PCM (digital audio) API - Include plugin system"

        depends on SND_PCM_OSS

        default y

        help

          If you disable this option, the ALSA's OSS PCM API will not

          support conversion of channels, formats and rates. It will

          behave like most of new OSS/Free drivers in 2.4/2.6 kernels.

config SND_SEQUENCER_OSS

        bool "OSS Sequencer API"

        depends on SND && SND_SEQUENCER

        select SND_OSSEMUL

        help

          Say Y here to enable OSS sequencer emulation (both

          /dev/sequencer and /dev/music interfaces).

          Many programs still use the OSS API, so say Y.

          If you choose M in "Sequencer support" (SND_SEQUENCER),

          this will be compiled as a module. The module will be called

          snd-seq-oss.

config SND_RTCTIMER

        tristate "RTC Timer support"

        depends on SND && RTC

        select SND_TIMER

        help

          Say Y here to enable RTC timer support for ALSA.  ALSA uses

          the RTC timer as a precise timing source and maps the RTC

          timer to ALSA's timer interface.  The ALSA sequencer code also

          can use this timing source.

          To compile this driver as a module, choose M here: the module

          will be called snd-rtctimer.

config SND_SEQ_RTCTIMER_DEFAULT

        bool "Use RTC as default sequencer timer"

        depends on SND_RTCTIMER && SND_SEQUENCER

        default y

        help

          Say Y here to use the RTC timer as the default sequencer

          timer.  This is strongly recommended because it ensures

          precise MIDI timing even when the system timer runs at less

          than 1000 Hz.

          If in doubt, say Y.

config SND_DYNAMIC_MINORS

        bool "Dynamic device file minor numbers"

        depends on SND

        help

          If you say Y here, the minor numbers of ALSA device files in

          /dev/snd/ are allocated dynamically.  This allows you to have

          more than 8 sound cards, but requires a dynamic device file

          system like udev.

          If you are unsure about this, say N here.

config SND_SUPPORT_OLD_API

        bool "Support old ALSA API"

        depends on SND

        default y

        help

          Say Y here to support the obsolete ALSA PCM API (ver.0.9.0 rc3

          or older).

config SND_VERBOSE_PROCFS

        bool "Verbose procfs contents"

        depends on SND && PROC_FS

        default y

        help

          Say Y here to include code for verbose procfs contents (provides

          useful information to developers when a problem occurs).  On the

          other side, it makes the ALSA subsystem larger.

config SND_VERBOSE_PRINTK

        bool "Verbose printk"

        depends on SND

        help

          Say Y here to enable verbose log messages.  These messages

          will help to identify source file and position containing

          printed messages.

          You don't need this unless you're debugging ALSA.

config SND_DEBUG

        bool "Debug"

        depends on SND

        help

          Say Y here to enable ALSA debug code.

config SND_DEBUG_DETECT

        bool "Debug detection"

        depends on SND_DEBUG

        help

          Say Y here to enable extra-verbose log messages printed when

          detecting devices.

config SND_PCM_XRUN_DEBUG

        bool "Enable PCM ring buffer overrun/underrun debugging"

        default n

        depends on SND_DEBUG && SND_VERBOSE_PROCFS

        help

          Say Y to enable the PCM ring buffer overrun/underrun debugging.

          It is usually not required, but if you have trouble with

          sound clicking when system is loaded, it may help to determine

          the process or driver which causes the scheduling gaps.