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1# ALSA soundcard-configuration
2config SND_TIMER
3 tristate
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4
5config SND_PCM
6 tristate
90bbaf66 7 select SND_TIMER if SND_PCM_TIMER
1da177e4 8
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9config SND_PCM_ELD
10 bool
11
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12config SND_PCM_IEC958
13 bool
14
b7ae6f31 15config SND_DMAENGINE_PCM
903eb318 16 tristate
b7ae6f31 17
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18config SND_HWDEP
19 tristate
1da177e4 20
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21config SND_SEQ_DEVICE
22 tristate
23
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24config SND_RAWMIDI
25 tristate
111b0cdb 26 select SND_SEQ_DEVICE if SND_SEQUENCER != n
1da177e4 27
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28config SND_COMPRESS_OFFLOAD
29 tristate
30
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31config SND_JACK
32 bool
33
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34# enable input device support in jack layer
35config SND_JACK_INPUT_DEV
36 bool
37 depends on SND_JACK
38 default y if INPUT=y || INPUT=SND
39
1da177e4 40config SND_OSSEMUL
eb3b705a 41 bool "Enable OSS Emulation"
d886e87c 42 select SOUND_OSS_CORE
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43 help
44 This option enables the build of OSS emulation layer.
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45
46config SND_MIXER_OSS
47 tristate "OSS Mixer API"
eb3b705a 48 depends on SND_OSSEMUL
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49 help
50 To enable OSS mixer API emulation (/dev/mixer*), say Y here
51 and read <file:Documentation/sound/alsa/OSS-Emulation.txt>.
52
53 Many programs still use the OSS API, so say Y.
54
55 To compile this driver as a module, choose M here: the module
56 will be called snd-mixer-oss.
57
58config SND_PCM_OSS
59 tristate "OSS PCM (digital audio) API"
eb3b705a 60 depends on SND_OSSEMUL
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61 select SND_PCM
62 help
63 To enable OSS digital audio (PCM) emulation (/dev/dsp*), say Y
64 here and read <file:Documentation/sound/alsa/OSS-Emulation.txt>.
65
66 Many programs still use the OSS API, so say Y.
67
68 To compile this driver as a module, choose M here: the module
69 will be called snd-pcm-oss.
70
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71config SND_PCM_OSS_PLUGINS
72 bool "OSS PCM (digital audio) API - Include plugin system"
73 depends on SND_PCM_OSS
74 default y
75 help
76 If you disable this option, the ALSA's OSS PCM API will not
77 support conversion of channels, formats and rates. It will
78 behave like most of new OSS/Free drivers in 2.4/2.6 kernels.
79
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80config SND_PCM_TIMER
81 bool "PCM timer interface" if EXPERT
82 default y
83 help
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84 If you disable this option, pcm timer will be unavailable, so
85 those stubs that use pcm timer (e.g. dmix, dsnoop & co) may work
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86 incorrectlly.
87
ac1efcfb 88 For some embedded devices, we may disable it to reduce memory
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89 footprint, about 20KB on x86_64 platform.
90
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91config SND_HRTIMER
92 tristate "HR-timer backend support"
93 depends on HIGH_RES_TIMERS
94 select SND_TIMER
95 help
96 Say Y here to enable HR-timer backend for ALSA timer. ALSA uses
97 the hrtimer as a precise timing source. The ALSA sequencer code
98 also can use this timing source.
99
100 To compile this driver as a module, choose M here: the module
101 will be called snd-hrtimer.
102
332682b1 103config SND_DYNAMIC_MINORS
b10e5391 104 bool "Dynamic device file minor numbers"
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105 help
106 If you say Y here, the minor numbers of ALSA device files in
107 /dev/snd/ are allocated dynamically. This allows you to have
108 more than 8 sound cards, but requires a dynamic device file
109 system like udev.
110
111 If you are unsure about this, say N here.
112
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113config SND_MAX_CARDS
114 int "Max number of sound cards"
115 range 4 256
116 default 32
117 depends on SND_DYNAMIC_MINORS
118 help
119 Specify the max number of sound cards that can be assigned
120 on a single machine.
121
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122config SND_SUPPORT_OLD_API
123 bool "Support old ALSA API"
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124 default y
125 help
126 Say Y here to support the obsolete ALSA PCM API (ver.0.9.0 rc3
127 or older).
128
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129config SND_PROC_FS
130 bool "Sound Proc FS Support" if EXPERT
131 depends on PROC_FS
132 default y
133 help
134 Say 'N' to disable Sound proc FS, which may reduce code size about
135 9KB on x86_64 platform.
136 If unsure say Y.
137
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138config SND_VERBOSE_PROCFS
139 bool "Verbose procfs contents"
e0ecb05a 140 depends on SND_PROC_FS
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141 default y
142 help
143 Say Y here to include code for verbose procfs contents (provides
a982ac06 144 useful information to developers when a problem occurs). On the
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145 other side, it makes the ALSA subsystem larger.
146
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147config SND_VERBOSE_PRINTK
148 bool "Verbose printk"
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149 help
150 Say Y here to enable verbose log messages. These messages
151 will help to identify source file and position containing
152 printed messages.
153
154 You don't need this unless you're debugging ALSA.
155
156config SND_DEBUG
157 bool "Debug"
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158 help
159 Say Y here to enable ALSA debug code.
160
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161config SND_DEBUG_VERBOSE
162 bool "More verbose debug"
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163 depends on SND_DEBUG
164 help
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165 Say Y here to enable extra-verbose debugging messages.
166
167 Let me repeat: it enables EXTRA-VERBOSE DEBUGGING messages.
168 So, say Y only if you are ready to be annoyed.
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169
170config SND_PCM_XRUN_DEBUG
171 bool "Enable PCM ring buffer overrun/underrun debugging"
172 default n
b7d90a35 173 depends on SND_DEBUG && SND_VERBOSE_PROCFS
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174 help
175 Say Y to enable the PCM ring buffer overrun/underrun debugging.
176 It is usually not required, but if you have trouble with
177 sound clicking when system is loaded, it may help to determine
178 the process or driver which causes the scheduling gaps.
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179
180config SND_VMASTER
181 bool
0528c749 182
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183config SND_DMA_SGBUF
184 def_bool y
185 depends on X86
186
0528c749 187source "sound/core/seq/Kconfig"