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Linus Torvalds1da177e2005-04-16 15:20:36 -07001# ALSA soundcard-configuration
2config SND_TIMER
3 tristate
Linus Torvalds1da177e2005-04-16 15:20:36 -07004
5config SND_PCM
6 tristate
7 select SND_TIMER
Florian Fainellia9605392009-12-21 16:36:10 -08008 select GCD
Linus Torvalds1da177e2005-04-16 15:20:36 -07009
10config SND_HWDEP
11 tristate
Linus Torvalds1da177e2005-04-16 15:20:36 -070012
13config SND_RAWMIDI
14 tristate
Linus Torvalds1da177e2005-04-16 15:20:36 -070015
Mark Brown0d94e412008-07-28 19:05:36 +010016# 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.
19config SND_JACK
20 bool
21
Linus Torvalds1da177e2005-04-16 15:20:36 -070022config SND_SEQUENCER
23 tristate "Sequencer support"
Linus Torvalds1da177e2005-04-16 15:20:36 -070024 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
33config 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
47config SND_OSSEMUL
Tejun Heod886e872008-08-28 16:42:51 +020048 select SOUND_OSS_CORE
Linus Torvalds1da177e2005-04-16 15:20:36 -070049 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -070050
51config SND_MIXER_OSS
52 tristate "OSS Mixer API"
Linus Torvalds1da177e2005-04-16 15:20:36 -070053 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
63config SND_PCM_OSS
64 tristate "OSS PCM (digital audio) API"
Linus Torvalds1da177e2005-04-16 15:20:36 -070065 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
Jaroslav Kysela21a34792006-01-13 09:12:11 +010076config 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
Linus Torvalds1da177e2005-04-16 15:20:36 -070085config SND_SEQUENCER_OSS
86 bool "OSS Sequencer API"
Takashi Iwai89fe5112008-05-23 16:10:37 +020087 depends on SND_SEQUENCER
Linus Torvalds1da177e2005-04-16 15:20:36 -070088 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
Frederik Deweerdtc2f60c52006-03-31 13:13:23 +020095 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.
Linus Torvalds1da177e2005-04-16 15:20:36 -070098
Takashi Iwaibbaf5e92008-10-24 18:16:50 +020099config 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
111config 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
Linus Torvalds1da177e2005-04-16 15:20:36 -0700119config SND_RTCTIMER
120 tristate "RTC Timer support"
Takashi Iwai89fe5112008-05-23 16:10:37 +0200121 depends on RTC
Linus Torvalds1da177e2005-04-16 15:20:36 -0700122 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
Takashi Iwai52948b32008-10-07 16:13:59 +0200132 Note that this option is exclusive with the new RTC drivers
133 (CONFIG_RTC_CLASS) since this requires the old API.
134
Clemens Ladischa4f508b2005-09-06 08:00:19 +0200135config SND_SEQ_RTCTIMER_DEFAULT
136 bool "Use RTC as default sequencer timer"
137 depends on SND_RTCTIMER && SND_SEQUENCER
Takashi Iwaie78a37b2008-10-29 16:08:01 +0100138 depends on !SND_SEQ_HRTIMER_DEFAULT
Clemens Ladischa4f508b2005-09-06 08:00:19 +0200139 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
Clemens Ladisch332682b2005-11-20 14:07:47 +0100148config SND_DYNAMIC_MINORS
Clemens Ladischb10e5392006-06-27 08:41:26 +0200149 bool "Dynamic device file minor numbers"
Clemens Ladisch332682b2005-11-20 14:07:47 +0100150 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
Takashi Iwai59d48582005-12-01 10:51:58 +0100158config SND_SUPPORT_OLD_API
159 bool "Support old ALSA API"
Takashi Iwai59d48582005-12-01 10:51:58 +0100160 default y
161 help
162 Say Y here to support the obsolete ALSA PCM API (ver.0.9.0 rc3
163 or older).
164
Jaroslav Kysela21a34792006-01-13 09:12:11 +0100165config SND_VERBOSE_PROCFS
166 bool "Verbose procfs contents"
Takashi Iwai89fe5112008-05-23 16:10:37 +0200167 depends on PROC_FS
Jaroslav Kysela21a34792006-01-13 09:12:11 +0100168 default y
169 help
170 Say Y here to include code for verbose procfs contents (provides
Matt LaPlantea982ac02007-05-09 07:35:06 +0200171 useful information to developers when a problem occurs). On the
Jaroslav Kysela21a34792006-01-13 09:12:11 +0100172 other side, it makes the ALSA subsystem larger.
173
Linus Torvalds1da177e2005-04-16 15:20:36 -0700174config SND_VERBOSE_PRINTK
175 bool "Verbose printk"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700176 help
177 Say Y here to enable verbose log messages. These messages
178 will help to identify source file and position containing
179 printed messages.
180
181 You don't need this unless you're debugging ALSA.
182
183config SND_DEBUG
184 bool "Debug"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700185 help
186 Say Y here to enable ALSA debug code.
187
Takashi Iwai62cf8722008-05-20 12:15:15 +0200188config SND_DEBUG_VERBOSE
189 bool "More verbose debug"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700190 depends on SND_DEBUG
191 help
Takashi Iwai62cf8722008-05-20 12:15:15 +0200192 Say Y here to enable extra-verbose debugging messages.
193
194 Let me repeat: it enables EXTRA-VERBOSE DEBUGGING messages.
195 So, say Y only if you are ready to be annoyed.
Jaroslav Kysela61fb63c2006-04-24 21:57:16 +0200196
197config SND_PCM_XRUN_DEBUG
198 bool "Enable PCM ring buffer overrun/underrun debugging"
199 default n
Takashi Iwaib7d90a32006-04-25 12:56:04 +0200200 depends on SND_DEBUG && SND_VERBOSE_PROCFS
Jaroslav Kysela61fb63c2006-04-24 21:57:16 +0200201 help
202 Say Y to enable the PCM ring buffer overrun/underrun debugging.
203 It is usually not required, but if you have trouble with
204 sound clicking when system is loaded, it may help to determine
205 the process or driver which causes the scheduling gaps.
Takashi Iwaie922b002008-02-18 13:03:13 +0100206
207config SND_VMASTER
208 bool
Michal Marek0528c742009-05-26 17:07:52 +0200209
Takashi Iwai35be5442011-11-02 08:36:06 +0100210config SND_KCTL_JACK
211 bool
212
Takashi Iwaicc6a8ac2008-06-17 16:39:06 +0200213config SND_DMA_SGBUF
214 def_bool y
215 depends on X86
216
Michal Marek0528c742009-05-26 17:07:52 +0200217source "sound/core/seq/Kconfig"