1
2config SND_TIMER
3 tristate
4
5config SND_PCM
6 tristate
7 select SND_TIMER
8
9config SND_DMAENGINE_PCM
10 tristate
11
12config SND_HWDEP
13 tristate
14
15config SND_RAWMIDI
16 tristate
17
18config SND_COMPRESS_OFFLOAD
19 tristate
20
21
22
23
24config SND_JACK
25 bool
26
27config SND_SEQUENCER
28 tristate "Sequencer support"
29 select SND_TIMER
30 help
31 Say Y or M to enable MIDI sequencer and router support. This
32 feature allows routing and enqueueing of MIDI events. Events
33 can be processed at a given time.
34
35 Many programs require this feature, so you should enable it
36 unless you know what you're doing.
37
38config SND_SEQ_DUMMY
39 tristate "Sequencer dummy client"
40 depends on SND_SEQUENCER
41 help
42 Say Y here to enable the dummy sequencer client. This client
43 is a simple MIDI-through client: all normal input events are
44 redirected to the output port immediately.
45
46 You don't need this unless you want to connect many MIDI
47 devices or applications together.
48
49 To compile this driver as a module, choose M here: the module
50 will be called snd-seq-dummy.
51
52config SND_OSSEMUL
53 select SOUND_OSS_CORE
54 bool
55
56config SND_MIXER_OSS
57 tristate "OSS Mixer API"
58 select SND_OSSEMUL
59 help
60 To enable OSS mixer API emulation (/dev/mixer*), say Y here
61 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-mixer-oss.
67
68config SND_PCM_OSS
69 tristate "OSS PCM (digital audio) API"
70 select SND_OSSEMUL
71 select SND_PCM
72 help
73 To enable OSS digital audio (PCM) emulation (/dev/dsp*), say Y
74 here and read <file:Documentation/sound/alsa/OSS-Emulation.txt>.
75
76 Many programs still use the OSS API, so say Y.
77
78 To compile this driver as a module, choose M here: the module
79 will be called snd-pcm-oss.
80
81config SND_PCM_OSS_PLUGINS
82 bool "OSS PCM (digital audio) API - Include plugin system"
83 depends on SND_PCM_OSS
84 default y
85 help
86 If you disable this option, the ALSA's OSS PCM API will not
87 support conversion of channels, formats and rates. It will
88 behave like most of new OSS/Free drivers in 2.4/2.6 kernels.
89
90config SND_SEQUENCER_OSS
91 bool "OSS Sequencer API"
92 depends on SND_SEQUENCER
93 select SND_OSSEMUL
94 help
95 Say Y here to enable OSS sequencer emulation (both
96 /dev/sequencer and /dev/music interfaces).
97
98 Many programs still use the OSS API, so say Y.
99
100 If you choose M in "Sequencer support" (SND_SEQUENCER),
101 this will be compiled as a module. The module will be called
102 snd-seq-oss.
103
104config SND_HRTIMER
105 tristate "HR-timer backend support"
106 depends on HIGH_RES_TIMERS
107 select SND_TIMER
108 help
109 Say Y here to enable HR-timer backend for ALSA timer. ALSA uses
110 the hrtimer as a precise timing source. The ALSA sequencer code
111 also can use this timing source.
112
113 To compile this driver as a module, choose M here: the module
114 will be called snd-hrtimer.
115
116config SND_SEQ_HRTIMER_DEFAULT
117 bool "Use HR-timer as default sequencer timer"
118 depends on SND_HRTIMER && SND_SEQUENCER
119 default y
120 help
121 Say Y here to use the HR-timer backend as the default sequencer
122 timer.
123
124config SND_RTCTIMER
125 tristate "RTC Timer support"
126 depends on RTC
127 select SND_TIMER
128 help
129 Say Y here to enable RTC timer support for ALSA. ALSA uses
130 the RTC timer as a precise timing source and maps the RTC
131 timer to ALSA's timer interface. The ALSA sequencer code also
132 can use this timing source.
133
134 To compile this driver as a module, choose M here: the module
135 will be called snd-rtctimer.
136
137 Note that this option is exclusive with the new RTC drivers
138 (CONFIG_RTC_CLASS) since this requires the old API.
139
140config SND_SEQ_RTCTIMER_DEFAULT
141 bool "Use RTC as default sequencer timer"
142 depends on SND_RTCTIMER && SND_SEQUENCER
143 depends on !SND_SEQ_HRTIMER_DEFAULT
144 default y
145 help
146 Say Y here to use the RTC timer as the default sequencer
147 timer. This is strongly recommended because it ensures
148 precise MIDI timing even when the system timer runs at less
149 than 1000 Hz.
150
151 If in doubt, say Y.
152
153config SND_DYNAMIC_MINORS
154 bool "Dynamic device file minor numbers"
155 help
156 If you say Y here, the minor numbers of ALSA device files in
157 /dev/snd/ are allocated dynamically. This allows you to have
158 more than 8 sound cards, but requires a dynamic device file
159 system like udev.
160
161 If you are unsure about this, say N here.
162
163config SND_MAX_CARDS
164 int "Max number of sound cards"
165 range 4 256
166 default 32
167 depends on SND_DYNAMIC_MINORS
168 help
169 Specify the max number of sound cards that can be assigned
170 on a single machine.
171
172config SND_SUPPORT_OLD_API
173 bool "Support old ALSA API"
174 default y
175 help
176 Say Y here to support the obsolete ALSA PCM API (ver.0.9.0 rc3
177 or older).
178
179config SND_VERBOSE_PROCFS
180 bool "Verbose procfs contents"
181 depends on PROC_FS
182 default y
183 help
184 Say Y here to include code for verbose procfs contents (provides
185 useful information to developers when a problem occurs). On the
186 other side, it makes the ALSA subsystem larger.
187
188config SND_VERBOSE_PRINTK
189 bool "Verbose printk"
190 help
191 Say Y here to enable verbose log messages. These messages
192 will help to identify source file and position containing
193 printed messages.
194
195 You don't need this unless you're debugging ALSA.
196
197config SND_DEBUG
198 bool "Debug"
199 help
200 Say Y here to enable ALSA debug code.
201
202config SND_DEBUG_VERBOSE
203 bool "More verbose debug"
204 depends on SND_DEBUG
205 help
206 Say Y here to enable extra-verbose debugging messages.
207
208 Let me repeat: it enables EXTRA-VERBOSE DEBUGGING messages.
209 So, say Y only if you are ready to be annoyed.
210
211config SND_PCM_XRUN_DEBUG
212 bool "Enable PCM ring buffer overrun/underrun debugging"
213 default n
214 depends on SND_DEBUG && SND_VERBOSE_PROCFS
215 help
216 Say Y to enable the PCM ring buffer overrun/underrun debugging.
217 It is usually not required, but if you have trouble with
218 sound clicking when system is loaded, it may help to determine
219 the process or driver which causes the scheduling gaps.
220
221config SND_VMASTER
222 bool
223
224config SND_KCTL_JACK
225 bool
226
227config SND_DMA_SGBUF
228 def_bool y
229 depends on X86
230
231source "sound/core/seq/Kconfig"
232
