[deliverable/linux.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

# 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_COMPRESS_OFFLOAD
	tristate "ALSA Compressed audio offload support"
	default n
	help
	  If you want support for offloading compressed audio and have such
	  a hardware, then you should say Y here and also to the DSP driver
	  of your platform.

	  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
0d94e41a MB	16	# To be effective this also requires INPUT - users should say:
	17	# select SND_JACK if INPUT=y \|\| INPUT=SND
	18	# to avoid having to force INPUT on.
	19	config SND_JACK
	20	bool
	21
1da177e4 LT	22	config SND_SEQUENCER
1da177e4 LT	23	tristate "Sequencer support"
1da177e4 LT	24	select SND_TIMER
	25	help
	26	Say Y or M to enable MIDI sequencer and router support. This
	27	feature allows routing and enqueueing of MIDI events. Events
	28	can be processed at a given time.
	29
	30	Many programs require this feature, so you should enable it
	31	unless you know what you're doing.
	32
	33	config SND_SEQ_DUMMY
	34	tristate "Sequencer dummy client"
	35	depends on SND_SEQUENCER
	36	help
	37	Say Y here to enable the dummy sequencer client. This client
	38	is a simple MIDI-through client: all normal input events are
	39	redirected to the output port immediately.
	40
	41	You don't need this unless you want to connect many MIDI
	42	devices or applications together.
	43
	44	To compile this driver as a module, choose M here: the module
	45	will be called snd-seq-dummy.
	46
	47	config SND_OSSEMUL
d886e87c	48	select SOUND_OSS_CORE
1da177e4	49	bool
1da177e4 LT	50
	51	config SND_MIXER_OSS
	52	tristate "OSS Mixer API"
1da177e4 LT	53	select SND_OSSEMUL
	54	help
	55	To enable OSS mixer API emulation (/dev/mixer*), say Y here
	56	and read <file:Documentation/sound/alsa/OSS-Emulation.txt>.
	57
	58	Many programs still use the OSS API, so say Y.
	59
	60	To compile this driver as a module, choose M here: the module
	61	will be called snd-mixer-oss.
	62
	63	config SND_PCM_OSS
	64	tristate "OSS PCM (digital audio) API"
1da177e4 LT	65	select SND_OSSEMUL
	66	select SND_PCM
	67	help
	68	To enable OSS digital audio (PCM) emulation (/dev/dsp*), say Y
	69	here and read <file:Documentation/sound/alsa/OSS-Emulation.txt>.
	70
	71	Many programs still use the OSS API, so say Y.
	72
	73	To compile this driver as a module, choose M here: the module
	74	will be called snd-pcm-oss.
	75
21a3479a JK	76	config SND_PCM_OSS_PLUGINS
	77	bool "OSS PCM (digital audio) API - Include plugin system"
	78	depends on SND_PCM_OSS
	79	default y
	80	help
	81	If you disable this option, the ALSA's OSS PCM API will not
	82	support conversion of channels, formats and rates. It will
	83	behave like most of new OSS/Free drivers in 2.4/2.6 kernels.
	84
1da177e4 LT	85	config SND_SEQUENCER_OSS
1da177e4 LT	86	bool "OSS Sequencer API"
89fe5117	87	depends on SND_SEQUENCER
1da177e4 LT	88	select SND_OSSEMUL
	89	help
	90	Say Y here to enable OSS sequencer emulation (both
	91	/dev/sequencer and /dev/music interfaces).
	92
	93	Many programs still use the OSS API, so say Y.
	94
c2f60c52 FD	95	If you choose M in "Sequencer support" (SND_SEQUENCER),
	96	this will be compiled as a module. The module will be called
	97	snd-seq-oss.
1da177e4	98
bbaf5e97 TI	99	config SND_HRTIMER
	100	tristate "HR-timer backend support"
	101	depends on HIGH_RES_TIMERS
	102	select SND_TIMER
	103	help
	104	Say Y here to enable HR-timer backend for ALSA timer. ALSA uses
	105	the hrtimer as a precise timing source. The ALSA sequencer code
	106	also can use this timing source.
	107
	108	To compile this driver as a module, choose M here: the module
	109	will be called snd-hrtimer.
	110
	111	config SND_SEQ_HRTIMER_DEFAULT
	112	bool "Use HR-timer as default sequencer timer"
	113	depends on SND_HRTIMER && SND_SEQUENCER
	114	default y
	115	help
	116	Say Y here to use the HR-timer backend as the default sequencer
	117	timer.
	118
1da177e4 LT	119	config SND_RTCTIMER
1da177e4 LT	120	tristate "RTC Timer support"
89fe5117	121	depends on RTC
1da177e4 LT	122	select SND_TIMER
	123	help
	124	Say Y here to enable RTC timer support for ALSA. ALSA uses
	125	the RTC timer as a precise timing source and maps the RTC
	126	timer to ALSA's timer interface. The ALSA sequencer code also
	127	can use this timing source.
	128
	129	To compile this driver as a module, choose M here: the module
	130	will be called snd-rtctimer.
	131
52948b3f TI	132	Note that this option is exclusive with the new RTC drivers
	133	(CONFIG_RTC_CLASS) since this requires the old API.
	134
a4f508b2 CL	135	config SND_SEQ_RTCTIMER_DEFAULT
	136	bool "Use RTC as default sequencer timer"
	137	depends on SND_RTCTIMER && SND_SEQUENCER
e78a37bc	138	depends on !SND_SEQ_HRTIMER_DEFAULT
a4f508b2 CL	139	default y
	140	help
	141	Say Y here to use the RTC timer as the default sequencer
	142	timer. This is strongly recommended because it ensures
	143	precise MIDI timing even when the system timer runs at less
	144	than 1000 Hz.
	145
	146	If in doubt, say Y.
	147
332682b1	148	config SND_DYNAMIC_MINORS
b10e5391	149	bool "Dynamic device file minor numbers"
332682b1 CL	150	help
	151	If you say Y here, the minor numbers of ALSA device files in
	152	/dev/snd/ are allocated dynamically. This allows you to have
	153	more than 8 sound cards, but requires a dynamic device file
	154	system like udev.
	155
	156	If you are unsure about this, say N here.
	157
40741dd5 VK	158	config SND_COMPRESS_OFFLOAD
	159	tristate "ALSA Compressed audio offload support"
	160	default n
	161	help
	162	If you want support for offloading compressed audio and have such
	163	a hardware, then you should say Y here and also to the DSP driver
	164	of your platform.
	165
	166	If you are unsure about this, say N here.
	167
59d48582 TI	168	config SND_SUPPORT_OLD_API
59d48582 TI	169	bool "Support old ALSA API"
59d48582 TI	170	default y
	171	help
	172	Say Y here to support the obsolete ALSA PCM API (ver.0.9.0 rc3
	173	or older).
	174
21a3479a JK	175	config SND_VERBOSE_PROCFS
21a3479a JK	176	bool "Verbose procfs contents"
89fe5117	177	depends on PROC_FS
21a3479a JK	178	default y
	179	help
	180	Say Y here to include code for verbose procfs contents (provides
a982ac06	181	useful information to developers when a problem occurs). On the
21a3479a JK	182	other side, it makes the ALSA subsystem larger.
21a3479a JK	183
1da177e4 LT	184	config SND_VERBOSE_PRINTK
1da177e4 LT	185	bool "Verbose printk"
1da177e4 LT	186	help
	187	Say Y here to enable verbose log messages. These messages
	188	will help to identify source file and position containing
	189	printed messages.
	190
	191	You don't need this unless you're debugging ALSA.
	192
	193	config SND_DEBUG
	194	bool "Debug"
1da177e4 LT	195	help
	196	Say Y here to enable ALSA debug code.
	197
62cf872a TI	198	config SND_DEBUG_VERBOSE
62cf872a TI	199	bool "More verbose debug"
1da177e4 LT	200	depends on SND_DEBUG
1da177e4 LT	201	help
62cf872a TI	202	Say Y here to enable extra-verbose debugging messages.
	203
	204	Let me repeat: it enables EXTRA-VERBOSE DEBUGGING messages.
	205	So, say Y only if you are ready to be annoyed.
61fb63c0 JK	206
	207	config SND_PCM_XRUN_DEBUG
	208	bool "Enable PCM ring buffer overrun/underrun debugging"
	209	default n
b7d90a35	210	depends on SND_DEBUG && SND_VERBOSE_PROCFS
61fb63c0 JK	211	help
	212	Say Y to enable the PCM ring buffer overrun/underrun debugging.
	213	It is usually not required, but if you have trouble with
	214	sound clicking when system is loaded, it may help to determine
	215	the process or driver which causes the scheduling gaps.
e922b002 TI	216
	217	config SND_VMASTER
	218	bool
0528c749	219
35be544a TI	220	config SND_KCTL_JACK
	221	bool
	222
cc6a8acd TI	223	config SND_DMA_SGBUF
	224	def_bool y
	225	depends on X86
	226
0528c749	227	source "sound/core/seq/Kconfig"