diff options
Diffstat (limited to 'sound/core/Kconfig')
| -rw-r--r-- | sound/core/Kconfig | 127 |
1 files changed, 105 insertions, 22 deletions
diff --git a/sound/core/Kconfig b/sound/core/Kconfig index 63b3ef9c83f5..48db44fa56fe 100644 --- a/sound/core/Kconfig +++ b/sound/core/Kconfig @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0-only # ALSA soundcard-configuration config SND_TIMER tristate @@ -25,9 +26,42 @@ config SND_RAWMIDI tristate select SND_SEQ_DEVICE if SND_SEQUENCER != n +config SND_UMP + tristate + select SND_RAWMIDI + +config SND_UMP_LEGACY_RAWMIDI + bool "Legacy raw MIDI support for UMP streams" + depends on SND_UMP + help + This option enables the legacy raw MIDI support for UMP streams. + When this option is set, an additional rawmidi device for the + legacy MIDI 1.0 byte streams is created for each UMP Endpoint. + The device contains 16 substreams corresponding to UMP groups. + +config SND_CORE_TEST + tristate "Sound core KUnit test" + depends on KUNIT + select SND_PCM + default KUNIT_ALL_TESTS + help + This options enables the sound core functions KUnit test. + + KUnit tests run during boot and output the results to the debug + log in TAP format (https://testanything.org/). Only useful for + kernel devs running KUnit test harness and are not for inclusion + into a production build. + + For more information on KUnit and unit tests in general, refer + to the KUnit documentation in Documentation/dev-tools/kunit/. + + config SND_COMPRESS_OFFLOAD tristate +config SND_COMPRESS_ACCEL + bool + config SND_JACK bool @@ -71,11 +105,11 @@ config SND_PCM_OSS config SND_PCM_OSS_PLUGINS bool "OSS PCM (digital audio) API - Include plugin system" depends on SND_PCM_OSS - default y + 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. + 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 @@ -83,7 +117,7 @@ config SND_PCM_TIMER 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 - incorrectlly. + incorrectly. For some embedded devices, we may disable it to reduce memory footprint, about 20KB on x86_64 platform. @@ -127,13 +161,13 @@ config SND_SUPPORT_OLD_API 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. + 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" @@ -141,17 +175,18 @@ config SND_VERBOSE_PROCFS 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. + 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" +config SND_CTL_FAST_LOOKUP + bool "Fast lookup of control elements" if EXPERT + default y + select XARRAY_MULTI 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. + 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" @@ -163,7 +198,7 @@ config SND_DEBUG_VERBOSE 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. @@ -177,6 +212,49 @@ config SND_PCM_XRUN_DEBUG 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_UTIMER + bool "Enable support for userspace-controlled virtual timers" + depends on SND_TIMER + help + Say Y to enable the support of userspace-controlled timers. These + timers are purely virtual, and they are supposed to be triggered + from userspace. They could be quite useful when synchronizing the + sound timing with userspace applications (for instance, when sending + data through snd-aloop). + config SND_VMASTER bool @@ -184,4 +262,9 @@ 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 + source "sound/core/seq/Kconfig" |