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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
Russell King838d1632015-05-09 11:26:42 +01009config SND_PCM_ELD
10 bool
11
Russell King9203dd02015-05-09 11:26:47 +010012config SND_PCM_IEC958
13 bool
14
Daniel Mackb7ae6f32013-08-12 10:42:37 +020015config SND_DMAENGINE_PCM
Daniel Mack903eb312013-08-15 16:03:52 +020016 tristate
Daniel Mackb7ae6f32013-08-12 10:42:37 +020017
Linus Torvalds1da177e2005-04-16 15:20:36 -070018config SND_HWDEP
19 tristate
Linus Torvalds1da177e2005-04-16 15:20:36 -070020
21config SND_RAWMIDI
22 tristate
Linus Torvalds1da177e2005-04-16 15:20:36 -070023
Takashi Iwai5c845be2012-01-13 09:53:53 +010024config SND_COMPRESS_OFFLOAD
25 tristate
26
Mark Brown0d94e412008-07-28 19:05:36 +010027# To be effective this also requires INPUT - users should say:
28# select SND_JACK if INPUT=y || INPUT=SND
29# to avoid having to force INPUT on.
30config SND_JACK
31 bool
32
Linus Torvalds1da177e2005-04-16 15:20:36 -070033config SND_SEQUENCER
34 tristate "Sequencer support"
Linus Torvalds1da177e2005-04-16 15:20:36 -070035 select SND_TIMER
36 help
37 Say Y or M to enable MIDI sequencer and router support. This
38 feature allows routing and enqueueing of MIDI events. Events
39 can be processed at a given time.
40
41 Many programs require this feature, so you should enable it
42 unless you know what you're doing.
43
44config SND_SEQ_DUMMY
45 tristate "Sequencer dummy client"
46 depends on SND_SEQUENCER
47 help
48 Say Y here to enable the dummy sequencer client. This client
49 is a simple MIDI-through client: all normal input events are
50 redirected to the output port immediately.
51
52 You don't need this unless you want to connect many MIDI
53 devices or applications together.
54
55 To compile this driver as a module, choose M here: the module
56 will be called snd-seq-dummy.
57
58config SND_OSSEMUL
Tejun Heod886e872008-08-28 16:42:51 +020059 select SOUND_OSS_CORE
Linus Torvalds1da177e2005-04-16 15:20:36 -070060 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -070061
62config SND_MIXER_OSS
63 tristate "OSS Mixer API"
Linus Torvalds1da177e2005-04-16 15:20:36 -070064 select SND_OSSEMUL
65 help
66 To enable OSS mixer API emulation (/dev/mixer*), say Y here
67 and read <file:Documentation/sound/alsa/OSS-Emulation.txt>.
68
69 Many programs still use the OSS API, so say Y.
70
71 To compile this driver as a module, choose M here: the module
72 will be called snd-mixer-oss.
73
74config SND_PCM_OSS
75 tristate "OSS PCM (digital audio) API"
Linus Torvalds1da177e2005-04-16 15:20:36 -070076 select SND_OSSEMUL
77 select SND_PCM
78 help
79 To enable OSS digital audio (PCM) emulation (/dev/dsp*), say Y
80 here and read <file:Documentation/sound/alsa/OSS-Emulation.txt>.
81
82 Many programs still use the OSS API, so say Y.
83
84 To compile this driver as a module, choose M here: the module
85 will be called snd-pcm-oss.
86
Jaroslav Kysela21a34792006-01-13 09:12:11 +010087config SND_PCM_OSS_PLUGINS
88 bool "OSS PCM (digital audio) API - Include plugin system"
89 depends on SND_PCM_OSS
90 default y
91 help
92 If you disable this option, the ALSA's OSS PCM API will not
93 support conversion of channels, formats and rates. It will
94 behave like most of new OSS/Free drivers in 2.4/2.6 kernels.
95
Linus Torvalds1da177e2005-04-16 15:20:36 -070096config SND_SEQUENCER_OSS
97 bool "OSS Sequencer API"
Takashi Iwai89fe5112008-05-23 16:10:37 +020098 depends on SND_SEQUENCER
Linus Torvalds1da177e2005-04-16 15:20:36 -070099 select SND_OSSEMUL
100 help
101 Say Y here to enable OSS sequencer emulation (both
102 /dev/sequencer and /dev/music interfaces).
103
104 Many programs still use the OSS API, so say Y.
105
Frederik Deweerdtc2f60c52006-03-31 13:13:23 +0200106 If you choose M in "Sequencer support" (SND_SEQUENCER),
107 this will be compiled as a module. The module will be called
108 snd-seq-oss.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700109
Takashi Iwaibbaf5e92008-10-24 18:16:50 +0200110config SND_HRTIMER
111 tristate "HR-timer backend support"
112 depends on HIGH_RES_TIMERS
113 select SND_TIMER
114 help
115 Say Y here to enable HR-timer backend for ALSA timer. ALSA uses
116 the hrtimer as a precise timing source. The ALSA sequencer code
117 also can use this timing source.
118
119 To compile this driver as a module, choose M here: the module
120 will be called snd-hrtimer.
121
122config SND_SEQ_HRTIMER_DEFAULT
123 bool "Use HR-timer as default sequencer timer"
124 depends on SND_HRTIMER && SND_SEQUENCER
125 default y
126 help
127 Say Y here to use the HR-timer backend as the default sequencer
128 timer.
129
Linus Torvalds1da177e2005-04-16 15:20:36 -0700130config SND_RTCTIMER
131 tristate "RTC Timer support"
Takashi Iwai89fe5112008-05-23 16:10:37 +0200132 depends on RTC
Linus Torvalds1da177e2005-04-16 15:20:36 -0700133 select SND_TIMER
134 help
135 Say Y here to enable RTC timer support for ALSA. ALSA uses
136 the RTC timer as a precise timing source and maps the RTC
137 timer to ALSA's timer interface. The ALSA sequencer code also
138 can use this timing source.
139
140 To compile this driver as a module, choose M here: the module
141 will be called snd-rtctimer.
142
Takashi Iwai52948b32008-10-07 16:13:59 +0200143 Note that this option is exclusive with the new RTC drivers
144 (CONFIG_RTC_CLASS) since this requires the old API.
145
Clemens Ladischa4f508b2005-09-06 08:00:19 +0200146config SND_SEQ_RTCTIMER_DEFAULT
147 bool "Use RTC as default sequencer timer"
148 depends on SND_RTCTIMER && SND_SEQUENCER
Takashi Iwaie78a37b2008-10-29 16:08:01 +0100149 depends on !SND_SEQ_HRTIMER_DEFAULT
Clemens Ladischa4f508b2005-09-06 08:00:19 +0200150 default y
151 help
152 Say Y here to use the RTC timer as the default sequencer
153 timer. This is strongly recommended because it ensures
154 precise MIDI timing even when the system timer runs at less
155 than 1000 Hz.
156
157 If in doubt, say Y.
158
Clemens Ladisch332682b2005-11-20 14:07:47 +0100159config SND_DYNAMIC_MINORS
Clemens Ladischb10e5392006-06-27 08:41:26 +0200160 bool "Dynamic device file minor numbers"
Clemens Ladisch332682b2005-11-20 14:07:47 +0100161 help
162 If you say Y here, the minor numbers of ALSA device files in
163 /dev/snd/ are allocated dynamically. This allows you to have
164 more than 8 sound cards, but requires a dynamic device file
165 system like udev.
166
167 If you are unsure about this, say N here.
168
Takashi Iwai7bb24912013-05-15 08:46:39 +0200169config SND_MAX_CARDS
170 int "Max number of sound cards"
171 range 4 256
172 default 32
173 depends on SND_DYNAMIC_MINORS
174 help
175 Specify the max number of sound cards that can be assigned
176 on a single machine.
177
Takashi Iwai59d48582005-12-01 10:51:58 +0100178config SND_SUPPORT_OLD_API
179 bool "Support old ALSA API"
Takashi Iwai59d48582005-12-01 10:51:58 +0100180 default y
181 help
182 Say Y here to support the obsolete ALSA PCM API (ver.0.9.0 rc3
183 or older).
184
Jaroslav Kysela21a34792006-01-13 09:12:11 +0100185config SND_VERBOSE_PROCFS
186 bool "Verbose procfs contents"
Takashi Iwai89fe5112008-05-23 16:10:37 +0200187 depends on PROC_FS
Jaroslav Kysela21a34792006-01-13 09:12:11 +0100188 default y
189 help
190 Say Y here to include code for verbose procfs contents (provides
Matt LaPlantea982ac02007-05-09 07:35:06 +0200191 useful information to developers when a problem occurs). On the
Jaroslav Kysela21a34792006-01-13 09:12:11 +0100192 other side, it makes the ALSA subsystem larger.
193
Linus Torvalds1da177e2005-04-16 15:20:36 -0700194config SND_VERBOSE_PRINTK
195 bool "Verbose printk"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700196 help
197 Say Y here to enable verbose log messages. These messages
198 will help to identify source file and position containing
199 printed messages.
200
201 You don't need this unless you're debugging ALSA.
202
203config SND_DEBUG
204 bool "Debug"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700205 help
206 Say Y here to enable ALSA debug code.
207
Takashi Iwai62cf8722008-05-20 12:15:15 +0200208config SND_DEBUG_VERBOSE
209 bool "More verbose debug"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700210 depends on SND_DEBUG
211 help
Takashi Iwai62cf8722008-05-20 12:15:15 +0200212 Say Y here to enable extra-verbose debugging messages.
213
214 Let me repeat: it enables EXTRA-VERBOSE DEBUGGING messages.
215 So, say Y only if you are ready to be annoyed.
Jaroslav Kysela61fb63c2006-04-24 21:57:16 +0200216
217config SND_PCM_XRUN_DEBUG
218 bool "Enable PCM ring buffer overrun/underrun debugging"
219 default n
Takashi Iwaib7d90a32006-04-25 12:56:04 +0200220 depends on SND_DEBUG && SND_VERBOSE_PROCFS
Jaroslav Kysela61fb63c2006-04-24 21:57:16 +0200221 help
222 Say Y to enable the PCM ring buffer overrun/underrun debugging.
223 It is usually not required, but if you have trouble with
224 sound clicking when system is loaded, it may help to determine
225 the process or driver which causes the scheduling gaps.
Takashi Iwaie922b002008-02-18 13:03:13 +0100226
227config SND_VMASTER
228 bool
Michal Marek0528c742009-05-26 17:07:52 +0200229
Takashi Iwaicc6a8ac2008-06-17 16:39:06 +0200230config SND_DMA_SGBUF
231 def_bool y
232 depends on X86
233
Michal Marek0528c742009-05-26 17:07:52 +0200234source "sound/core/seq/Kconfig"