# ALSA soundcard-configuration
config SND_TIMER
tristate
- depends on SND
config SND_PCM
tristate
select SND_TIMER
- depends on SND
+ select GCD
config SND_HWDEP
tristate
- depends on SND
config SND_RAWMIDI
tristate
- depends on SND
+
+# To be effective this also requires INPUT - users should say:
+# select SND_JACK if INPUT=y || INPUT=SND
+# to avoid having to force INPUT on.
+config SND_JACK
+ bool
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
will be called snd-seq-dummy.
config SND_OSSEMUL
+ select SOUND_OSS_CORE
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
config SND_PCM_OSS
tristate "OSS PCM (digital audio) API"
- depends on SND
select SND_OSSEMUL
select SND_PCM
help
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
+ depends on SND_SEQUENCER
select SND_OSSEMUL
help
Say Y here to enable OSS sequencer emulation (both
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_HRTIMER
+ tristate "HR-timer backend support"
+ depends on HIGH_RES_TIMERS
+ select SND_TIMER
+ help
+ Say Y here to enable HR-timer backend for ALSA timer. ALSA uses
+ the hrtimer as a precise timing source. 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-seq-oss.
+ will be called snd-hrtimer.
+
+config SND_SEQ_HRTIMER_DEFAULT
+ bool "Use HR-timer as default sequencer timer"
+ depends on SND_HRTIMER && SND_SEQUENCER
+ default y
+ help
+ Say Y here to use the HR-timer backend as the default sequencer
+ timer.
config SND_RTCTIMER
tristate "RTC Timer support"
- depends on SND && RTC
+ depends on RTC
select SND_TIMER
help
Say Y here to enable RTC timer support for ALSA. ALSA uses
To compile this driver as a module, choose M here: the module
will be called snd-rtctimer.
+ Note that this option is exclusive with the new RTC drivers
+ (CONFIG_RTC_CLASS) since this requires the old API.
+
+config SND_SEQ_RTCTIMER_DEFAULT
+ bool "Use RTC as default sequencer timer"
+ depends on SND_RTCTIMER && SND_SEQUENCER
+ depends on !SND_SEQ_HRTIMER_DEFAULT
+ 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"
+ 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"
+ 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 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
config SND_DEBUG
bool "Debug"
- depends on SND
help
Say Y here to enable ALSA debug code.
-config SND_DEBUG_MEMORY
- bool "Debug memory"
+config SND_DEBUG_VERBOSE
+ bool "More verbose debug"
depends on SND_DEBUG
help
- Say Y here to enable debugging of memory allocations.
-
-config SND_DEBUG_DETECT
- bool "Debug detection"
- depends on SND_DEBUG
+ Say Y here to enable extra-verbose debugging messages.
+
+ Let me repeat: it enables EXTRA-VERBOSE DEBUGGING messages.
+ So, say Y only if you are ready to be annoyed.
+
+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 here to enable extra-verbose log messages printed when
- detecting devices.
+ 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.
-config SND_GENERIC_PM
+config SND_VMASTER
bool
- depends on SND
+
+config SND_DMA_SGBUF
+ def_bool y
+ depends on X86
+
+source "sound/core/seq/Kconfig"
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