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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
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
Mark Brown0d94e412008-07-28 19:05:36 +010015# To be effective this also requires INPUT - users should say:
16# select SND_JACK if INPUT=y || INPUT=SND
17# to avoid having to force INPUT on.
18config SND_JACK
19 bool
20
Linus Torvalds1da177e2005-04-16 15:20:36 -070021config SND_SEQUENCER
22 tristate "Sequencer support"
Linus Torvalds1da177e2005-04-16 15:20:36 -070023 select SND_TIMER
24 help
25 Say Y or M to enable MIDI sequencer and router support. This
26 feature allows routing and enqueueing of MIDI events. Events
27 can be processed at a given time.
28
29 Many programs require this feature, so you should enable it
30 unless you know what you're doing.
31
32config SND_SEQ_DUMMY
33 tristate "Sequencer dummy client"
34 depends on SND_SEQUENCER
35 help
36 Say Y here to enable the dummy sequencer client. This client
37 is a simple MIDI-through client: all normal input events are
38 redirected to the output port immediately.
39
40 You don't need this unless you want to connect many MIDI
41 devices or applications together.
42
43 To compile this driver as a module, choose M here: the module
44 will be called snd-seq-dummy.
45
46config SND_OSSEMUL
Tejun Heod886e872008-08-28 16:42:51 +020047 select SOUND_OSS_CORE
Linus Torvalds1da177e2005-04-16 15:20:36 -070048 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -070049
50config SND_MIXER_OSS
51 tristate "OSS Mixer API"
Linus Torvalds1da177e2005-04-16 15:20:36 -070052 select SND_OSSEMUL
53 help
54 To enable OSS mixer API emulation (/dev/mixer*), say Y here
55 and read <file:Documentation/sound/alsa/OSS-Emulation.txt>.
56
57 Many programs still use the OSS API, so say Y.
58
59 To compile this driver as a module, choose M here: the module
60 will be called snd-mixer-oss.
61
62config SND_PCM_OSS
63 tristate "OSS PCM (digital audio) API"
Linus Torvalds1da177e2005-04-16 15:20:36 -070064 select SND_OSSEMUL
65 select SND_PCM
66 help
67 To enable OSS digital audio (PCM) emulation (/dev/dsp*), say Y
68 here and read <file:Documentation/sound/alsa/OSS-Emulation.txt>.
69
70 Many programs still use the OSS API, so say Y.
71
72 To compile this driver as a module, choose M here: the module
73 will be called snd-pcm-oss.
74
Jaroslav Kysela21a34792006-01-13 09:12:11 +010075config SND_PCM_OSS_PLUGINS
76 bool "OSS PCM (digital audio) API - Include plugin system"
77 depends on SND_PCM_OSS
78 default y
79 help
80 If you disable this option, the ALSA's OSS PCM API will not
81 support conversion of channels, formats and rates. It will
82 behave like most of new OSS/Free drivers in 2.4/2.6 kernels.
83
Linus Torvalds1da177e2005-04-16 15:20:36 -070084config SND_SEQUENCER_OSS
85 bool "OSS Sequencer API"
Takashi Iwai89fe5112008-05-23 16:10:37 +020086 depends on SND_SEQUENCER
Linus Torvalds1da177e2005-04-16 15:20:36 -070087 select SND_OSSEMUL
88 help
89 Say Y here to enable OSS sequencer emulation (both
90 /dev/sequencer and /dev/music interfaces).
91
92 Many programs still use the OSS API, so say Y.
93
Frederik Deweerdtc2f60c52006-03-31 13:13:23 +020094 If you choose M in "Sequencer support" (SND_SEQUENCER),
95 this will be compiled as a module. The module will be called
96 snd-seq-oss.
Linus Torvalds1da177e2005-04-16 15:20:36 -070097
Takashi Iwaibbaf5e92008-10-24 18:16:50 +020098config SND_HRTIMER
99 tristate "HR-timer backend support"
100 depends on HIGH_RES_TIMERS
101 select SND_TIMER
102 help
103 Say Y here to enable HR-timer backend for ALSA timer. ALSA uses
104 the hrtimer as a precise timing source. The ALSA sequencer code
105 also can use this timing source.
106
107 To compile this driver as a module, choose M here: the module
108 will be called snd-hrtimer.
109
110config SND_SEQ_HRTIMER_DEFAULT
111 bool "Use HR-timer as default sequencer timer"
112 depends on SND_HRTIMER && SND_SEQUENCER
113 default y
114 help
115 Say Y here to use the HR-timer backend as the default sequencer
116 timer.
117
Linus Torvalds1da177e2005-04-16 15:20:36 -0700118config SND_RTCTIMER
119 tristate "RTC Timer support"
Takashi Iwai89fe5112008-05-23 16:10:37 +0200120 depends on RTC
Linus Torvalds1da177e2005-04-16 15:20:36 -0700121 select SND_TIMER
122 help
123 Say Y here to enable RTC timer support for ALSA. ALSA uses
124 the RTC timer as a precise timing source and maps the RTC
125 timer to ALSA's timer interface. The ALSA sequencer code also
126 can use this timing source.
127
128 To compile this driver as a module, choose M here: the module
129 will be called snd-rtctimer.
130
Takashi Iwai52948b32008-10-07 16:13:59 +0200131 Note that this option is exclusive with the new RTC drivers
132 (CONFIG_RTC_CLASS) since this requires the old API.
133
Clemens Ladischa4f508b2005-09-06 08:00:19 +0200134config SND_SEQ_RTCTIMER_DEFAULT
135 bool "Use RTC as default sequencer timer"
136 depends on SND_RTCTIMER && SND_SEQUENCER
Takashi Iwaie78a37b2008-10-29 16:08:01 +0100137 depends on !SND_SEQ_HRTIMER_DEFAULT
Clemens Ladischa4f508b2005-09-06 08:00:19 +0200138 default y
139 help
140 Say Y here to use the RTC timer as the default sequencer
141 timer. This is strongly recommended because it ensures
142 precise MIDI timing even when the system timer runs at less
143 than 1000 Hz.
144
145 If in doubt, say Y.
146
Clemens Ladisch332682b2005-11-20 14:07:47 +0100147config SND_DYNAMIC_MINORS
Clemens Ladischb10e5392006-06-27 08:41:26 +0200148 bool "Dynamic device file minor numbers"
Clemens Ladisch332682b2005-11-20 14:07:47 +0100149 help
150 If you say Y here, the minor numbers of ALSA device files in
151 /dev/snd/ are allocated dynamically. This allows you to have
152 more than 8 sound cards, but requires a dynamic device file
153 system like udev.
154
155 If you are unsure about this, say N here.
156
Takashi Iwai59d48582005-12-01 10:51:58 +0100157config SND_SUPPORT_OLD_API
158 bool "Support old ALSA API"
Takashi Iwai59d48582005-12-01 10:51:58 +0100159 default y
160 help
161 Say Y here to support the obsolete ALSA PCM API (ver.0.9.0 rc3
162 or older).
163
Jaroslav Kysela21a34792006-01-13 09:12:11 +0100164config SND_VERBOSE_PROCFS
165 bool "Verbose procfs contents"
Takashi Iwai89fe5112008-05-23 16:10:37 +0200166 depends on PROC_FS
Jaroslav Kysela21a34792006-01-13 09:12:11 +0100167 default y
168 help
169 Say Y here to include code for verbose procfs contents (provides
Matt LaPlantea982ac02007-05-09 07:35:06 +0200170 useful information to developers when a problem occurs). On the
Jaroslav Kysela21a34792006-01-13 09:12:11 +0100171 other side, it makes the ALSA subsystem larger.
172
Linus Torvalds1da177e2005-04-16 15:20:36 -0700173config SND_VERBOSE_PRINTK
174 bool "Verbose printk"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700175 help
176 Say Y here to enable verbose log messages. These messages
177 will help to identify source file and position containing
178 printed messages.
179
180 You don't need this unless you're debugging ALSA.
181
182config SND_DEBUG
183 bool "Debug"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700184 help
185 Say Y here to enable ALSA debug code.
186
Takashi Iwai62cf8722008-05-20 12:15:15 +0200187config SND_DEBUG_VERBOSE
188 bool "More verbose debug"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700189 depends on SND_DEBUG
190 help
Takashi Iwai62cf8722008-05-20 12:15:15 +0200191 Say Y here to enable extra-verbose debugging messages.
192
193 Let me repeat: it enables EXTRA-VERBOSE DEBUGGING messages.
194 So, say Y only if you are ready to be annoyed.
Jaroslav Kysela61fb63c2006-04-24 21:57:16 +0200195
196config SND_PCM_XRUN_DEBUG
197 bool "Enable PCM ring buffer overrun/underrun debugging"
198 default n
Takashi Iwaib7d90a32006-04-25 12:56:04 +0200199 depends on SND_DEBUG && SND_VERBOSE_PROCFS
Jaroslav Kysela61fb63c2006-04-24 21:57:16 +0200200 help
201 Say Y to enable the PCM ring buffer overrun/underrun debugging.
202 It is usually not required, but if you have trouble with
203 sound clicking when system is loaded, it may help to determine
204 the process or driver which causes the scheduling gaps.
Takashi Iwaie922b002008-02-18 13:03:13 +0100205
206config SND_VMASTER
207 bool
Michal Marek0528c742009-05-26 17:07:52 +0200208
209source "sound/core/seq/Kconfig"