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+# SPDX-License-Identifier: GPL-2.0-only
+# ALSA soundcard-configuration
+config SND_TIMER
+ tristate
+
+config SND_PCM
+ tristate
+ select SND_TIMER if SND_PCM_TIMER
+
+config SND_PCM_ELD
+ bool
+
+config SND_PCM_IEC958
+ bool
+
+config SND_DMAENGINE_PCM
+ tristate
+
+config SND_HWDEP
+ tristate
+
+config SND_SEQ_DEVICE
+ tristate
+
+config SND_RAWMIDI
+ tristate
+ select SND_SEQ_DEVICE if SND_SEQUENCER != n
+
+config SND_COMPRESS_OFFLOAD
+ tristate
+
+config SND_JACK
+ bool
+
+# enable input device support in jack layer
+config SND_JACK_INPUT_DEV
+ bool
+ depends on SND_JACK
+ default y if INPUT=y || INPUT=SND
+
+config SND_OSSEMUL
+ bool "Enable OSS Emulation"
+ select SOUND_OSS_CORE
+ help
+ This option enables the build of OSS emulation layer.
+
+config SND_MIXER_OSS
+ tristate "OSS Mixer API"
+ depends on SND_OSSEMUL
+ help
+ To enable OSS mixer API emulation (/dev/mixer*), say Y here
+ and read <file:Documentation/sound/designs/oss-emulation.rst>.
+
+ 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_OSSEMUL
+ select SND_PCM
+ help
+ To enable OSS digital audio (PCM) emulation (/dev/dsp*), say Y
+ here and read <file:Documentation/sound/designs/oss-emulation.rst>.
+
+ 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_PCM_TIMER
+ bool "PCM timer interface" if EXPERT
+ default y
+ help
+ If you disable this option, pcm timer will be unavailable, so
+ those stubs that use pcm timer (e.g. dmix, dsnoop & co) may work
+ incorrectly.
+
+ For some embedded devices, we may disable it to reduce memory
+ footprint, about 20KB on x86_64 platform.
+
+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-hrtimer.
+
+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_MAX_CARDS
+ int "Max number of sound cards"
+ range 4 256
+ default 32
+ depends on SND_DYNAMIC_MINORS
+ help
+ Specify the max number of sound cards that can be assigned
+ on a single machine.
+
+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_PROC_FS
+ bool "Sound Proc FS Support" if EXPERT
+ depends on PROC_FS
+ default y
+ help
+ Say 'N' to disable Sound proc FS, which may reduce code size about
+ 9KB on x86_64 platform.
+ If unsure say Y.
+
+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"
+ 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_CTL_FAST_LOOKUP
+ bool "Fast lookup of control elements" if EXPERT
+ default y
+ select XARRAY_MULTI
+ help
+ This option enables the faster lookup of control elements.
+ It will consume more memory because of the additional Xarray.
+ If you want to choose the memory footprint over the performance
+ inevitably, turn this off.
+
+config SND_DEBUG
+ bool "Debug"
+ help
+ Say Y here to enable ALSA debug code.
+
+config SND_DEBUG_VERBOSE
+ bool "More verbose debug"
+ depends on SND_DEBUG
+ help
+ 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 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_CTL_INPUT_VALIDATION
+ bool "Validate input data to control API"
+ help
+ Say Y to enable the additional validation for the input data to
+ each control element, including the value range checks.
+ An error is returned from ALSA core for invalid inputs without
+ passing to the driver. This is a kind of hardening for drivers
+ that have no proper error checks, at the cost of a slight
+ performance overhead.
+
+config SND_CTL_DEBUG
+ bool "Enable debugging feature for control API"
+ depends on SND_DEBUG
+ help
+ Say Y to enable the debugging feature for ALSA control API.
+ It performs the additional sanity-checks for each control element
+ read access, such as whether the values returned from the driver
+ are in the proper ranges or the check of the invalid access at
+ out-of-array areas. The error is printed when the driver gives
+ such unexpected values.
+ When you develop a driver that deals with control elements, it's
+ strongly recommended to try this one once and verify whether you see
+ any relevant errors or not.
+
+config SND_JACK_INJECTION_DEBUG
+ bool "Sound jack injection interface via debugfs"
+ depends on SND_JACK && SND_DEBUG && DEBUG_FS
+ help
+ This option can be used to enable or disable sound jack
+ software injection.
+ Say Y if you are debugging via jack injection interface.
+ If unsure select "N".
+
+config SND_VMASTER
+ bool
+
+config SND_DMA_SGBUF
+ def_bool y
+ depends on X86
+
+config SND_CTL_LED
+ tristate
+ select NEW_LEDS if SND_CTL_LED
+ select LEDS_TRIGGERS if SND_CTL_LED
+ select LEDS_TRIGGER_AUDIO if SND_CTL_LED
+
+source "sound/core/seq/Kconfig"