[mirror_ubuntu-eoan-kernel.git] / sound / core / Kconfig

# ALSA soundcard-configuration
config SND_TIMER
	tristate

config SND_PCM
	tristate
	select SND_TIMER
	select GCD

config SND_HWDEP
	tristate

config SND_RAWMIDI
	tristate

config SND_COMPRESS_OFFLOAD
	tristate

# 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"
	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
	select SOUND_OSS_CORE
	bool

config SND_MIXER_OSS
	tristate "OSS Mixer API"
	select SND_OSSEMUL
	help
	  To enable OSS mixer API emulation (/dev/mixer*), say Y here
	  and read <file:Documentation/sound/alsa/OSS-Emulation.txt>.

	  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"
	select SND_OSSEMUL
	select SND_PCM
	help
	  To enable OSS digital audio (PCM) emulation (/dev/dsp*), say Y
	  here and read <file:Documentation/sound/alsa/OSS-Emulation.txt>.

	  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_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_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_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 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.

	  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"
	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"
	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_VMASTER
	bool

config SND_KCTL_JACK
	bool

config SND_DMA_SGBUF
	def_bool y
	depends on X86

source "sound/core/seq/Kconfig"
Commit	Line	Data
1da177e4 LT	1	# ALSA soundcard-configuration
	2	config SND_TIMER
	3	tristate
1da177e4 LT	4
	5	config SND_PCM
	6	tristate
	7	select SND_TIMER
a9605391	8	select GCD
1da177e4 LT	9
	10	config SND_HWDEP
	11	tristate
1da177e4 LT	12
	13	config SND_RAWMIDI
	14	tristate
1da177e4	15
5c845beb TI	16	config SND_COMPRESS_OFFLOAD
	17	tristate
	18
0d94e41a MB	19	# To be effective this also requires INPUT - users should say:
	20	# select SND_JACK if INPUT=y \|\| INPUT=SND
	21	# to avoid having to force INPUT on.
	22	config SND_JACK
	23	bool
	24
1da177e4 LT	25	config SND_SEQUENCER
1da177e4 LT	26	tristate "Sequencer support"
1da177e4 LT	27	select SND_TIMER
	28	help
	29	Say Y or M to enable MIDI sequencer and router support. This
	30	feature allows routing and enqueueing of MIDI events. Events
	31	can be processed at a given time.
	32
	33	Many programs require this feature, so you should enable it
	34	unless you know what you're doing.
	35
	36	config SND_SEQ_DUMMY
	37	tristate "Sequencer dummy client"
	38	depends on SND_SEQUENCER
	39	help
	40	Say Y here to enable the dummy sequencer client. This client
	41	is a simple MIDI-through client: all normal input events are
	42	redirected to the output port immediately.
	43
	44	You don't need this unless you want to connect many MIDI
	45	devices or applications together.
	46
	47	To compile this driver as a module, choose M here: the module
	48	will be called snd-seq-dummy.
	49
	50	config SND_OSSEMUL
d886e87c	51	select SOUND_OSS_CORE
1da177e4	52	bool
1da177e4 LT	53
	54	config SND_MIXER_OSS
	55	tristate "OSS Mixer API"
1da177e4 LT	56	select SND_OSSEMUL
	57	help
	58	To enable OSS mixer API emulation (/dev/mixer*), say Y here
	59	and read <file:Documentation/sound/alsa/OSS-Emulation.txt>.
	60
	61	Many programs still use the OSS API, so say Y.
	62
	63	To compile this driver as a module, choose M here: the module
	64	will be called snd-mixer-oss.
	65
	66	config SND_PCM_OSS
	67	tristate "OSS PCM (digital audio) API"
1da177e4 LT	68	select SND_OSSEMUL
	69	select SND_PCM
	70	help
	71	To enable OSS digital audio (PCM) emulation (/dev/dsp*), say Y
	72	here and read <file:Documentation/sound/alsa/OSS-Emulation.txt>.
	73
	74	Many programs still use the OSS API, so say Y.
	75
	76	To compile this driver as a module, choose M here: the module
	77	will be called snd-pcm-oss.
	78
21a3479a JK	79	config SND_PCM_OSS_PLUGINS
	80	bool "OSS PCM (digital audio) API - Include plugin system"
	81	depends on SND_PCM_OSS
	82	default y
	83	help
	84	If you disable this option, the ALSA's OSS PCM API will not
	85	support conversion of channels, formats and rates. It will
	86	behave like most of new OSS/Free drivers in 2.4/2.6 kernels.
	87
1da177e4 LT	88	config SND_SEQUENCER_OSS
1da177e4 LT	89	bool "OSS Sequencer API"
89fe5117	90	depends on SND_SEQUENCER
1da177e4 LT	91	select SND_OSSEMUL
	92	help
	93	Say Y here to enable OSS sequencer emulation (both
	94	/dev/sequencer and /dev/music interfaces).
	95
	96	Many programs still use the OSS API, so say Y.
	97
c2f60c52 FD	98	If you choose M in "Sequencer support" (SND_SEQUENCER),
	99	this will be compiled as a module. The module will be called
	100	snd-seq-oss.
1da177e4	101
bbaf5e97 TI	102	config SND_HRTIMER
	103	tristate "HR-timer backend support"
	104	depends on HIGH_RES_TIMERS
	105	select SND_TIMER
	106	help
	107	Say Y here to enable HR-timer backend for ALSA timer. ALSA uses
	108	the hrtimer as a precise timing source. The ALSA sequencer code
	109	also can use this timing source.
	110
	111	To compile this driver as a module, choose M here: the module
	112	will be called snd-hrtimer.
	113
	114	config SND_SEQ_HRTIMER_DEFAULT
	115	bool "Use HR-timer as default sequencer timer"
	116	depends on SND_HRTIMER && SND_SEQUENCER
	117	default y
	118	help
	119	Say Y here to use the HR-timer backend as the default sequencer
	120	timer.
	121
1da177e4 LT	122	config SND_RTCTIMER
1da177e4 LT	123	tristate "RTC Timer support"
89fe5117	124	depends on RTC
1da177e4 LT	125	select SND_TIMER
	126	help
	127	Say Y here to enable RTC timer support for ALSA. ALSA uses
	128	the RTC timer as a precise timing source and maps the RTC
	129	timer to ALSA's timer interface. The ALSA sequencer code also
	130	can use this timing source.
	131
	132	To compile this driver as a module, choose M here: the module
	133	will be called snd-rtctimer.
	134
52948b3f TI	135	Note that this option is exclusive with the new RTC drivers
	136	(CONFIG_RTC_CLASS) since this requires the old API.
	137
a4f508b2 CL	138	config SND_SEQ_RTCTIMER_DEFAULT
	139	bool "Use RTC as default sequencer timer"
	140	depends on SND_RTCTIMER && SND_SEQUENCER
e78a37bc	141	depends on !SND_SEQ_HRTIMER_DEFAULT
a4f508b2 CL	142	default y
	143	help
	144	Say Y here to use the RTC timer as the default sequencer
	145	timer. This is strongly recommended because it ensures
	146	precise MIDI timing even when the system timer runs at less
	147	than 1000 Hz.
	148
	149	If in doubt, say Y.
	150
332682b1	151	config SND_DYNAMIC_MINORS
b10e5391	152	bool "Dynamic device file minor numbers"
332682b1 CL	153	help
	154	If you say Y here, the minor numbers of ALSA device files in
	155	/dev/snd/ are allocated dynamically. This allows you to have
	156	more than 8 sound cards, but requires a dynamic device file
	157	system like udev.
	158
	159	If you are unsure about this, say N here.
	160
59d48582 TI	161	config SND_SUPPORT_OLD_API
59d48582 TI	162	bool "Support old ALSA API"
59d48582 TI	163	default y
	164	help
	165	Say Y here to support the obsolete ALSA PCM API (ver.0.9.0 rc3
	166	or older).
	167
21a3479a JK	168	config SND_VERBOSE_PROCFS
21a3479a JK	169	bool "Verbose procfs contents"
89fe5117	170	depends on PROC_FS
21a3479a JK	171	default y
	172	help
	173	Say Y here to include code for verbose procfs contents (provides
a982ac06	174	useful information to developers when a problem occurs). On the
21a3479a JK	175	other side, it makes the ALSA subsystem larger.
21a3479a JK	176
1da177e4 LT	177	config SND_VERBOSE_PRINTK
1da177e4 LT	178	bool "Verbose printk"
1da177e4 LT	179	help
	180	Say Y here to enable verbose log messages. These messages
	181	will help to identify source file and position containing
	182	printed messages.
	183
	184	You don't need this unless you're debugging ALSA.
	185
	186	config SND_DEBUG
	187	bool "Debug"
1da177e4 LT	188	help
	189	Say Y here to enable ALSA debug code.
	190
62cf872a TI	191	config SND_DEBUG_VERBOSE
62cf872a TI	192	bool "More verbose debug"
1da177e4 LT	193	depends on SND_DEBUG
1da177e4 LT	194	help
62cf872a TI	195	Say Y here to enable extra-verbose debugging messages.
	196
	197	Let me repeat: it enables EXTRA-VERBOSE DEBUGGING messages.
	198	So, say Y only if you are ready to be annoyed.
61fb63c0 JK	199
	200	config SND_PCM_XRUN_DEBUG
	201	bool "Enable PCM ring buffer overrun/underrun debugging"
	202	default n
b7d90a35	203	depends on SND_DEBUG && SND_VERBOSE_PROCFS
61fb63c0 JK	204	help
	205	Say Y to enable the PCM ring buffer overrun/underrun debugging.
	206	It is usually not required, but if you have trouble with
	207	sound clicking when system is loaded, it may help to determine
	208	the process or driver which causes the scheduling gaps.
e922b002 TI	209
	210	config SND_VMASTER
	211	bool
0528c749	212
35be544a TI	213	config SND_KCTL_JACK
	214	bool
	215
cc6a8acd TI	216	config SND_DMA_SGBUF
	217	def_bool y
	218	depends on X86
	219
0528c749	220	source "sound/core/seq/Kconfig"