Commit | Line | Data |
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1da177e4 LT |
1 | # ALSA soundcard-configuration |
2 | config SND_TIMER | |
3 | tristate | |
1da177e4 LT |
4 | |
5 | config SND_PCM | |
6 | tristate | |
90bbaf66 | 7 | select SND_TIMER if SND_PCM_TIMER |
1da177e4 | 8 | |
838d1631 RK |
9 | config SND_PCM_ELD |
10 | bool | |
11 | ||
9203dd01 RK |
12 | config SND_PCM_IEC958 |
13 | bool | |
14 | ||
b7ae6f31 | 15 | config SND_DMAENGINE_PCM |
903eb318 | 16 | tristate |
b7ae6f31 | 17 | |
1da177e4 LT |
18 | config SND_HWDEP |
19 | tristate | |
1da177e4 LT |
20 | |
21 | config SND_RAWMIDI | |
22 | tristate | |
1da177e4 | 23 | |
5c845beb TI |
24 | config SND_COMPRESS_OFFLOAD |
25 | tristate | |
26 | ||
0d94e41a MB |
27 | # 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. | |
30 | config SND_JACK | |
31 | bool | |
32 | ||
1da177e4 LT |
33 | config SND_SEQUENCER |
34 | tristate "Sequencer support" | |
1da177e4 LT |
35 | 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 | ||
44 | config 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 | ||
58 | config SND_OSSEMUL | |
d886e87c | 59 | select SOUND_OSS_CORE |
1da177e4 | 60 | bool |
1da177e4 LT |
61 | |
62 | config SND_MIXER_OSS | |
63 | tristate "OSS Mixer API" | |
1da177e4 LT |
64 | 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 | ||
74 | config SND_PCM_OSS | |
75 | tristate "OSS PCM (digital audio) API" | |
1da177e4 LT |
76 | 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 | ||
21a3479a JK |
87 | config 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 | ||
90bbaf66 JY |
96 | config SND_PCM_TIMER |
97 | bool "PCM timer interface" if EXPERT | |
98 | default y | |
99 | help | |
100 | If you disable this option, pcm timer will be inavailable, so | |
101 | those stubs used pcm timer (e.g. dmix, dsnoop & co) may work | |
102 | incorrectlly. | |
103 | ||
104 | For some embedded device, we may disable it to reduce memory | |
105 | footprint, about 20KB on x86_64 platform. | |
106 | ||
1da177e4 LT |
107 | config SND_SEQUENCER_OSS |
108 | bool "OSS Sequencer API" | |
89fe5117 | 109 | depends on SND_SEQUENCER |
1da177e4 LT |
110 | select SND_OSSEMUL |
111 | help | |
112 | Say Y here to enable OSS sequencer emulation (both | |
113 | /dev/sequencer and /dev/music interfaces). | |
114 | ||
115 | Many programs still use the OSS API, so say Y. | |
116 | ||
c2f60c52 FD |
117 | If you choose M in "Sequencer support" (SND_SEQUENCER), |
118 | this will be compiled as a module. The module will be called | |
119 | snd-seq-oss. | |
1da177e4 | 120 | |
bbaf5e97 TI |
121 | config SND_HRTIMER |
122 | tristate "HR-timer backend support" | |
123 | depends on HIGH_RES_TIMERS | |
124 | select SND_TIMER | |
125 | help | |
126 | Say Y here to enable HR-timer backend for ALSA timer. ALSA uses | |
127 | the hrtimer as a precise timing source. The ALSA sequencer code | |
128 | also can use this timing source. | |
129 | ||
130 | To compile this driver as a module, choose M here: the module | |
131 | will be called snd-hrtimer. | |
132 | ||
133 | config SND_SEQ_HRTIMER_DEFAULT | |
134 | bool "Use HR-timer as default sequencer timer" | |
135 | depends on SND_HRTIMER && SND_SEQUENCER | |
136 | default y | |
137 | help | |
138 | Say Y here to use the HR-timer backend as the default sequencer | |
139 | timer. | |
140 | ||
1da177e4 LT |
141 | config SND_RTCTIMER |
142 | tristate "RTC Timer support" | |
89fe5117 | 143 | depends on RTC |
1da177e4 LT |
144 | select SND_TIMER |
145 | help | |
146 | Say Y here to enable RTC timer support for ALSA. ALSA uses | |
147 | the RTC timer as a precise timing source and maps the RTC | |
148 | timer to ALSA's timer interface. The ALSA sequencer code also | |
149 | can use this timing source. | |
150 | ||
151 | To compile this driver as a module, choose M here: the module | |
152 | will be called snd-rtctimer. | |
153 | ||
52948b3f TI |
154 | Note that this option is exclusive with the new RTC drivers |
155 | (CONFIG_RTC_CLASS) since this requires the old API. | |
156 | ||
a4f508b2 CL |
157 | config SND_SEQ_RTCTIMER_DEFAULT |
158 | bool "Use RTC as default sequencer timer" | |
159 | depends on SND_RTCTIMER && SND_SEQUENCER | |
e78a37bc | 160 | depends on !SND_SEQ_HRTIMER_DEFAULT |
a4f508b2 CL |
161 | default y |
162 | help | |
163 | Say Y here to use the RTC timer as the default sequencer | |
164 | timer. This is strongly recommended because it ensures | |
165 | precise MIDI timing even when the system timer runs at less | |
166 | than 1000 Hz. | |
167 | ||
168 | If in doubt, say Y. | |
169 | ||
332682b1 | 170 | config SND_DYNAMIC_MINORS |
b10e5391 | 171 | bool "Dynamic device file minor numbers" |
332682b1 CL |
172 | help |
173 | If you say Y here, the minor numbers of ALSA device files in | |
174 | /dev/snd/ are allocated dynamically. This allows you to have | |
175 | more than 8 sound cards, but requires a dynamic device file | |
176 | system like udev. | |
177 | ||
178 | If you are unsure about this, say N here. | |
179 | ||
7bb2491b TI |
180 | config SND_MAX_CARDS |
181 | int "Max number of sound cards" | |
182 | range 4 256 | |
183 | default 32 | |
184 | depends on SND_DYNAMIC_MINORS | |
185 | help | |
186 | Specify the max number of sound cards that can be assigned | |
187 | on a single machine. | |
188 | ||
59d48582 TI |
189 | config SND_SUPPORT_OLD_API |
190 | bool "Support old ALSA API" | |
59d48582 TI |
191 | default y |
192 | help | |
193 | Say Y here to support the obsolete ALSA PCM API (ver.0.9.0 rc3 | |
194 | or older). | |
195 | ||
e0ecb05a JY |
196 | config SND_PROC_FS |
197 | bool "Sound Proc FS Support" if EXPERT | |
198 | depends on PROC_FS | |
199 | default y | |
200 | help | |
201 | Say 'N' to disable Sound proc FS, which may reduce code size about | |
202 | 9KB on x86_64 platform. | |
203 | If unsure say Y. | |
204 | ||
21a3479a JK |
205 | config SND_VERBOSE_PROCFS |
206 | bool "Verbose procfs contents" | |
e0ecb05a | 207 | depends on SND_PROC_FS |
21a3479a JK |
208 | default y |
209 | help | |
210 | Say Y here to include code for verbose procfs contents (provides | |
a982ac06 | 211 | useful information to developers when a problem occurs). On the |
21a3479a JK |
212 | other side, it makes the ALSA subsystem larger. |
213 | ||
1da177e4 LT |
214 | config SND_VERBOSE_PRINTK |
215 | bool "Verbose printk" | |
1da177e4 LT |
216 | help |
217 | Say Y here to enable verbose log messages. These messages | |
218 | will help to identify source file and position containing | |
219 | printed messages. | |
220 | ||
221 | You don't need this unless you're debugging ALSA. | |
222 | ||
223 | config SND_DEBUG | |
224 | bool "Debug" | |
1da177e4 LT |
225 | help |
226 | Say Y here to enable ALSA debug code. | |
227 | ||
62cf872a TI |
228 | config SND_DEBUG_VERBOSE |
229 | bool "More verbose debug" | |
1da177e4 LT |
230 | depends on SND_DEBUG |
231 | help | |
62cf872a TI |
232 | Say Y here to enable extra-verbose debugging messages. |
233 | ||
234 | Let me repeat: it enables EXTRA-VERBOSE DEBUGGING messages. | |
235 | So, say Y only if you are ready to be annoyed. | |
61fb63c0 JK |
236 | |
237 | config SND_PCM_XRUN_DEBUG | |
238 | bool "Enable PCM ring buffer overrun/underrun debugging" | |
239 | default n | |
b7d90a35 | 240 | depends on SND_DEBUG && SND_VERBOSE_PROCFS |
61fb63c0 JK |
241 | help |
242 | Say Y to enable the PCM ring buffer overrun/underrun debugging. | |
243 | It is usually not required, but if you have trouble with | |
244 | sound clicking when system is loaded, it may help to determine | |
245 | the process or driver which causes the scheduling gaps. | |
e922b002 TI |
246 | |
247 | config SND_VMASTER | |
248 | bool | |
0528c749 | 249 | |
cc6a8acd TI |
250 | config SND_DMA_SGBUF |
251 | def_bool y | |
252 | depends on X86 | |
253 | ||
0528c749 | 254 | source "sound/core/seq/Kconfig" |