sound: Fix Kconfig indentation
[linux-2.6-block.git] / sound / core / Kconfig
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ec8f24b7 1# SPDX-License-Identifier: GPL-2.0-only
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2# ALSA soundcard-configuration
3config SND_TIMER
4 tristate
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5
6config SND_PCM
7 tristate
90bbaf66 8 select SND_TIMER if SND_PCM_TIMER
1da177e4 9
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10config SND_PCM_ELD
11 bool
12
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13config SND_PCM_IEC958
14 bool
15
b7ae6f31 16config SND_DMAENGINE_PCM
903eb318 17 tristate
b7ae6f31 18
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19config SND_HWDEP
20 tristate
1da177e4 21
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22config SND_SEQ_DEVICE
23 tristate
24
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25config SND_RAWMIDI
26 tristate
111b0cdb 27 select SND_SEQ_DEVICE if SND_SEQUENCER != n
1da177e4 28
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29config SND_COMPRESS_OFFLOAD
30 tristate
31
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32config SND_JACK
33 bool
34
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35# enable input device support in jack layer
36config SND_JACK_INPUT_DEV
37 bool
38 depends on SND_JACK
39 default y if INPUT=y || INPUT=SND
40
1da177e4 41config SND_OSSEMUL
eb3b705a 42 bool "Enable OSS Emulation"
d886e87c 43 select SOUND_OSS_CORE
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44 help
45 This option enables the build of OSS emulation layer.
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46
47config SND_MIXER_OSS
48 tristate "OSS Mixer API"
eb3b705a 49 depends on SND_OSSEMUL
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50 help
51 To enable OSS mixer API emulation (/dev/mixer*), say Y here
5fb94e9c 52 and read <file:Documentation/sound/designs/oss-emulation.rst>.
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53
54 Many programs still use the OSS API, so say Y.
55
56 To compile this driver as a module, choose M here: the module
57 will be called snd-mixer-oss.
58
59config SND_PCM_OSS
60 tristate "OSS PCM (digital audio) API"
eb3b705a 61 depends on SND_OSSEMUL
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62 select SND_PCM
63 help
64 To enable OSS digital audio (PCM) emulation (/dev/dsp*), say Y
5fb94e9c 65 here and read <file:Documentation/sound/designs/oss-emulation.rst>.
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66
67 Many programs still use the OSS API, so say Y.
68
69 To compile this driver as a module, choose M here: the module
70 will be called snd-pcm-oss.
71
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72config SND_PCM_OSS_PLUGINS
73 bool "OSS PCM (digital audio) API - Include plugin system"
74 depends on SND_PCM_OSS
82e8d723 75 default y
21a3479a 76 help
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77 If you disable this option, the ALSA's OSS PCM API will not
78 support conversion of channels, formats and rates. It will
79 behave like most of new OSS/Free drivers in 2.4/2.6 kernels.
21a3479a 80
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81config SND_PCM_TIMER
82 bool "PCM timer interface" if EXPERT
83 default y
84 help
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85 If you disable this option, pcm timer will be unavailable, so
86 those stubs that use pcm timer (e.g. dmix, dsnoop & co) may work
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87 incorrectlly.
88
ac1efcfb 89 For some embedded devices, we may disable it to reduce memory
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90 footprint, about 20KB on x86_64 platform.
91
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92config SND_HRTIMER
93 tristate "HR-timer backend support"
94 depends on HIGH_RES_TIMERS
95 select SND_TIMER
96 help
97 Say Y here to enable HR-timer backend for ALSA timer. ALSA uses
98 the hrtimer as a precise timing source. The ALSA sequencer code
99 also can use this timing source.
100
101 To compile this driver as a module, choose M here: the module
102 will be called snd-hrtimer.
103
332682b1 104config SND_DYNAMIC_MINORS
b10e5391 105 bool "Dynamic device file minor numbers"
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106 help
107 If you say Y here, the minor numbers of ALSA device files in
108 /dev/snd/ are allocated dynamically. This allows you to have
109 more than 8 sound cards, but requires a dynamic device file
110 system like udev.
111
112 If you are unsure about this, say N here.
113
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114config SND_MAX_CARDS
115 int "Max number of sound cards"
116 range 4 256
117 default 32
118 depends on SND_DYNAMIC_MINORS
119 help
120 Specify the max number of sound cards that can be assigned
121 on a single machine.
122
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123config SND_SUPPORT_OLD_API
124 bool "Support old ALSA API"
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125 default y
126 help
127 Say Y here to support the obsolete ALSA PCM API (ver.0.9.0 rc3
128 or older).
129
e0ecb05a 130config SND_PROC_FS
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131 bool "Sound Proc FS Support" if EXPERT
132 depends on PROC_FS
133 default y
134 help
135 Say 'N' to disable Sound proc FS, which may reduce code size about
136 9KB on x86_64 platform.
137 If unsure say Y.
e0ecb05a 138
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139config SND_VERBOSE_PROCFS
140 bool "Verbose procfs contents"
e0ecb05a 141 depends on SND_PROC_FS
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142 default y
143 help
144 Say Y here to include code for verbose procfs contents (provides
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145 useful information to developers when a problem occurs). On the
146 other side, it makes the ALSA subsystem larger.
21a3479a 147
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148config SND_VERBOSE_PRINTK
149 bool "Verbose printk"
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150 help
151 Say Y here to enable verbose log messages. These messages
152 will help to identify source file and position containing
153 printed messages.
154
155 You don't need this unless you're debugging ALSA.
156
157config SND_DEBUG
158 bool "Debug"
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159 help
160 Say Y here to enable ALSA debug code.
161
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162config SND_DEBUG_VERBOSE
163 bool "More verbose debug"
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164 depends on SND_DEBUG
165 help
62cf872a 166 Say Y here to enable extra-verbose debugging messages.
82e8d723 167
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168 Let me repeat: it enables EXTRA-VERBOSE DEBUGGING messages.
169 So, say Y only if you are ready to be annoyed.
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170
171config SND_PCM_XRUN_DEBUG
172 bool "Enable PCM ring buffer overrun/underrun debugging"
173 default n
b7d90a35 174 depends on SND_DEBUG && SND_VERBOSE_PROCFS
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175 help
176 Say Y to enable the PCM ring buffer overrun/underrun debugging.
177 It is usually not required, but if you have trouble with
178 sound clicking when system is loaded, it may help to determine
179 the process or driver which causes the scheduling gaps.
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180
181config SND_VMASTER
182 bool
0528c749 183
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184config SND_DMA_SGBUF
185 def_bool y
186 depends on X86
187
0528c749 188source "sound/core/seq/Kconfig"