1
2
3config SND_TIMER
4 tristate
5
6config SND_PCM
7 tristate
8 select SND_TIMER if SND_PCM_TIMER
9
10config SND_PCM_ELD
11 bool
12
13config SND_PCM_IEC958
14 bool
15
16config SND_DMAENGINE_PCM
17 tristate
18
19config SND_HWDEP
20 tristate
21
22config SND_SEQ_DEVICE
23 tristate
24
25config SND_RAWMIDI
26 tristate
27 select SND_SEQ_DEVICE if SND_SEQUENCER != n
28
29config SND_COMPRESS_OFFLOAD
30 tristate
31
32config SND_JACK
33 bool
34
35
36config SND_JACK_INPUT_DEV
37 bool
38 depends on SND_JACK
39 default y if INPUT=y || INPUT=SND
40
41config SND_OSSEMUL
42 bool "Enable OSS Emulation"
43 select SOUND_OSS_CORE
44 help
45 This option enables the build of OSS emulation layer.
46
47config SND_MIXER_OSS
48 tristate "OSS Mixer API"
49 depends on SND_OSSEMUL
50 help
51 To enable OSS mixer API emulation (/dev/mixer*), say Y here
52 and read <file:Documentation/sound/designs/oss-emulation.rst>.
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"
61 depends on SND_OSSEMUL
62 select SND_PCM
63 help
64 To enable OSS digital audio (PCM) emulation (/dev/dsp*), say Y
65 here and read <file:Documentation/sound/designs/oss-emulation.rst>.
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
72config SND_PCM_OSS_PLUGINS
73 bool "OSS PCM (digital audio) API - Include plugin system"
74 depends on SND_PCM_OSS
75 default y
76 help
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.
80
81config SND_PCM_TIMER
82 bool "PCM timer interface" if EXPERT
83 default y
84 help
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
87 incorrectlly.
88
89 For some embedded devices, we may disable it to reduce memory
90 footprint, about 20KB on x86_64 platform.
91
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
104config SND_DYNAMIC_MINORS
105 bool "Dynamic device file minor numbers"
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
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
123config SND_SUPPORT_OLD_API
124 bool "Support old ALSA API"
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
130config SND_PROC_FS
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.
138
139config SND_VERBOSE_PROCFS
140 bool "Verbose procfs contents"
141 depends on SND_PROC_FS
142 default y
143 help
144 Say Y here to include code for verbose procfs contents (provides
145 useful information to developers when a problem occurs). On the
146 other side, it makes the ALSA subsystem larger.
147
148config SND_VERBOSE_PRINTK
149 bool "Verbose printk"
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"
159 help
160 Say Y here to enable ALSA debug code.
161
162config SND_DEBUG_VERBOSE
163 bool "More verbose debug"
164 depends on SND_DEBUG
165 help
166 Say Y here to enable extra-verbose debugging messages.
167
168 Let me repeat: it enables EXTRA-VERBOSE DEBUGGING messages.
169 So, say Y only if you are ready to be annoyed.
170
171config SND_PCM_XRUN_DEBUG
172 bool "Enable PCM ring buffer overrun/underrun debugging"
173 default n
174 depends on SND_DEBUG && SND_VERBOSE_PROCFS
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.
180
181config SND_CTL_VALIDATION
182 bool "Perform sanity-checks for each control element access"
183 depends on SND_DEBUG
184 help
185 Say Y to enable the additional validation of each control element
186 access, including sanity-checks like whether the values returned
187 from the driver are in the proper ranges or the check of the invalid
188 access at out-of-array areas.
189
190config SND_JACK_INJECTION_DEBUG
191 bool "Sound jack injection interface via debugfs"
192 depends on SND_JACK && SND_DEBUG && DEBUG_FS
193 help
194 This option can be used to enable or disable sound jack
195 software injection.
196 Say Y if you are debugging via jack injection interface.
197 If unsure select "N".
198
199config SND_VMASTER
200 bool
201
202config SND_DMA_SGBUF
203 def_bool y
204 depends on X86
205
206config SND_CTL_LED
207 tristate
208 select NEW_LEDS if SND_CTL_LED
209 select LEDS_TRIGGERS if SND_CTL_LED
210 select LEDS_TRIGGER_AUDIO if SND_CTL_LED
211
212source "sound/core/seq/Kconfig"
213
