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Diffstat (limited to 'sound/core/Kconfig')
| -rw-r--r-- | sound/core/Kconfig | 237 |
1 files changed, 237 insertions, 0 deletions
diff --git a/sound/core/Kconfig b/sound/core/Kconfig new file mode 100644 index 000000000..12990d9a4 --- /dev/null +++ b/sound/core/Kconfig @@ -0,0 +1,237 @@ +# 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" |