blob: 335d45ecde6a19bc0d3f12a68363c669ea405a17 [file] [log] [blame]
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
Linus Torvalds1da177e2005-04-16 15:20:36 -07008
9config SND_HWDEP
10 tristate
Linus Torvalds1da177e2005-04-16 15:20:36 -070011
12config SND_RAWMIDI
13 tristate
Linus Torvalds1da177e2005-04-16 15:20:36 -070014
15config SND_SEQUENCER
16 tristate "Sequencer support"
Linus Torvalds1da177e2005-04-16 15:20:36 -070017 select SND_TIMER
18 help
19 Say Y or M to enable MIDI sequencer and router support. This
20 feature allows routing and enqueueing of MIDI events. Events
21 can be processed at a given time.
22
23 Many programs require this feature, so you should enable it
24 unless you know what you're doing.
25
26config SND_SEQ_DUMMY
27 tristate "Sequencer dummy client"
28 depends on SND_SEQUENCER
29 help
30 Say Y here to enable the dummy sequencer client. This client
31 is a simple MIDI-through client: all normal input events are
32 redirected to the output port immediately.
33
34 You don't need this unless you want to connect many MIDI
35 devices or applications together.
36
37 To compile this driver as a module, choose M here: the module
38 will be called snd-seq-dummy.
39
40config SND_OSSEMUL
41 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -070042
43config SND_MIXER_OSS
44 tristate "OSS Mixer API"
Linus Torvalds1da177e2005-04-16 15:20:36 -070045 select SND_OSSEMUL
46 help
47 To enable OSS mixer API emulation (/dev/mixer*), say Y here
48 and read <file:Documentation/sound/alsa/OSS-Emulation.txt>.
49
50 Many programs still use the OSS API, so say Y.
51
52 To compile this driver as a module, choose M here: the module
53 will be called snd-mixer-oss.
54
55config SND_PCM_OSS
56 tristate "OSS PCM (digital audio) API"
Linus Torvalds1da177e2005-04-16 15:20:36 -070057 select SND_OSSEMUL
58 select SND_PCM
59 help
60 To enable OSS digital audio (PCM) emulation (/dev/dsp*), say Y
61 here and read <file:Documentation/sound/alsa/OSS-Emulation.txt>.
62
63 Many programs still use the OSS API, so say Y.
64
65 To compile this driver as a module, choose M here: the module
66 will be called snd-pcm-oss.
67
Jaroslav Kysela21a34792006-01-13 09:12:11 +010068config SND_PCM_OSS_PLUGINS
69 bool "OSS PCM (digital audio) API - Include plugin system"
70 depends on SND_PCM_OSS
71 default y
72 help
73 If you disable this option, the ALSA's OSS PCM API will not
74 support conversion of channels, formats and rates. It will
75 behave like most of new OSS/Free drivers in 2.4/2.6 kernels.
76
Linus Torvalds1da177e2005-04-16 15:20:36 -070077config SND_SEQUENCER_OSS
78 bool "OSS Sequencer API"
Takashi Iwai89fe5112008-05-23 16:10:37 +020079 depends on SND_SEQUENCER
Linus Torvalds1da177e2005-04-16 15:20:36 -070080 select SND_OSSEMUL
81 help
82 Say Y here to enable OSS sequencer emulation (both
83 /dev/sequencer and /dev/music interfaces).
84
85 Many programs still use the OSS API, so say Y.
86
Frederik Deweerdtc2f60c52006-03-31 13:13:23 +020087 If you choose M in "Sequencer support" (SND_SEQUENCER),
88 this will be compiled as a module. The module will be called
89 snd-seq-oss.
Linus Torvalds1da177e2005-04-16 15:20:36 -070090
91config SND_RTCTIMER
92 tristate "RTC Timer support"
Takashi Iwai89fe5112008-05-23 16:10:37 +020093 depends on RTC
Linus Torvalds1da177e2005-04-16 15:20:36 -070094 select SND_TIMER
95 help
96 Say Y here to enable RTC timer support for ALSA. ALSA uses
97 the RTC timer as a precise timing source and maps the RTC
98 timer to ALSA's timer interface. The ALSA sequencer code also
99 can use this timing source.
100
101 To compile this driver as a module, choose M here: the module
102 will be called snd-rtctimer.
103
Clemens Ladischa4f508b2005-09-06 08:00:19 +0200104config SND_SEQ_RTCTIMER_DEFAULT
105 bool "Use RTC as default sequencer timer"
106 depends on SND_RTCTIMER && SND_SEQUENCER
107 default y
108 help
109 Say Y here to use the RTC timer as the default sequencer
110 timer. This is strongly recommended because it ensures
111 precise MIDI timing even when the system timer runs at less
112 than 1000 Hz.
113
114 If in doubt, say Y.
115
Clemens Ladisch332682b2005-11-20 14:07:47 +0100116config SND_DYNAMIC_MINORS
Clemens Ladischb10e5392006-06-27 08:41:26 +0200117 bool "Dynamic device file minor numbers"
Clemens Ladisch332682b2005-11-20 14:07:47 +0100118 help
119 If you say Y here, the minor numbers of ALSA device files in
120 /dev/snd/ are allocated dynamically. This allows you to have
121 more than 8 sound cards, but requires a dynamic device file
122 system like udev.
123
124 If you are unsure about this, say N here.
125
Takashi Iwai59d48582005-12-01 10:51:58 +0100126config SND_SUPPORT_OLD_API
127 bool "Support old ALSA API"
Takashi Iwai59d48582005-12-01 10:51:58 +0100128 default y
129 help
130 Say Y here to support the obsolete ALSA PCM API (ver.0.9.0 rc3
131 or older).
132
Jaroslav Kysela21a34792006-01-13 09:12:11 +0100133config SND_VERBOSE_PROCFS
134 bool "Verbose procfs contents"
Takashi Iwai89fe5112008-05-23 16:10:37 +0200135 depends on PROC_FS
Jaroslav Kysela21a34792006-01-13 09:12:11 +0100136 default y
137 help
138 Say Y here to include code for verbose procfs contents (provides
Matt LaPlantea982ac02007-05-09 07:35:06 +0200139 useful information to developers when a problem occurs). On the
Jaroslav Kysela21a34792006-01-13 09:12:11 +0100140 other side, it makes the ALSA subsystem larger.
141
Linus Torvalds1da177e2005-04-16 15:20:36 -0700142config SND_VERBOSE_PRINTK
143 bool "Verbose printk"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700144 help
145 Say Y here to enable verbose log messages. These messages
146 will help to identify source file and position containing
147 printed messages.
148
149 You don't need this unless you're debugging ALSA.
150
151config SND_DEBUG
152 bool "Debug"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700153 help
154 Say Y here to enable ALSA debug code.
155
Takashi Iwai62cf8722008-05-20 12:15:15 +0200156config SND_DEBUG_VERBOSE
157 bool "More verbose debug"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700158 depends on SND_DEBUG
159 help
Takashi Iwai62cf8722008-05-20 12:15:15 +0200160 Say Y here to enable extra-verbose debugging messages.
161
162 Let me repeat: it enables EXTRA-VERBOSE DEBUGGING messages.
163 So, say Y only if you are ready to be annoyed.
Jaroslav Kysela61fb63c2006-04-24 21:57:16 +0200164
165config SND_PCM_XRUN_DEBUG
166 bool "Enable PCM ring buffer overrun/underrun debugging"
167 default n
Takashi Iwaib7d90a32006-04-25 12:56:04 +0200168 depends on SND_DEBUG && SND_VERBOSE_PROCFS
Jaroslav Kysela61fb63c2006-04-24 21:57:16 +0200169 help
170 Say Y to enable the PCM ring buffer overrun/underrun debugging.
171 It is usually not required, but if you have trouble with
172 sound clicking when system is loaded, it may help to determine
173 the process or driver which causes the scheduling gaps.
Takashi Iwaie922b002008-02-18 13:03:13 +0100174
175config SND_VMASTER
176 bool