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 | config SND_JACK |
28 | bool | |
29 | ||
fe0d128c TI |
30 | # enable input device support in jack layer |
31 | config SND_JACK_INPUT_DEV | |
32 | bool | |
33 | depends on SND_JACK | |
34 | default y if INPUT=y || INPUT=SND | |
35 | ||
1da177e4 LT |
36 | config SND_SEQUENCER |
37 | tristate "Sequencer support" | |
1da177e4 LT |
38 | select SND_TIMER |
39 | help | |
40 | Say Y or M to enable MIDI sequencer and router support. This | |
41 | feature allows routing and enqueueing of MIDI events. Events | |
42 | can be processed at a given time. | |
43 | ||
44 | Many programs require this feature, so you should enable it | |
45 | unless you know what you're doing. | |
46 | ||
47 | config SND_SEQ_DUMMY | |
48 | tristate "Sequencer dummy client" | |
49 | depends on SND_SEQUENCER | |
50 | help | |
51 | Say Y here to enable the dummy sequencer client. This client | |
52 | is a simple MIDI-through client: all normal input events are | |
53 | redirected to the output port immediately. | |
54 | ||
55 | You don't need this unless you want to connect many MIDI | |
56 | devices or applications together. | |
57 | ||
58 | To compile this driver as a module, choose M here: the module | |
59 | will be called snd-seq-dummy. | |
60 | ||
61 | config SND_OSSEMUL | |
d886e87c | 62 | select SOUND_OSS_CORE |
1da177e4 | 63 | bool |
1da177e4 LT |
64 | |
65 | config SND_MIXER_OSS | |
66 | tristate "OSS Mixer API" | |
1da177e4 LT |
67 | select SND_OSSEMUL |
68 | help | |
69 | To enable OSS mixer API emulation (/dev/mixer*), say Y here | |
70 | and read <file:Documentation/sound/alsa/OSS-Emulation.txt>. | |
71 | ||
72 | Many programs still use the OSS API, so say Y. | |
73 | ||
74 | To compile this driver as a module, choose M here: the module | |
75 | will be called snd-mixer-oss. | |
76 | ||
77 | config SND_PCM_OSS | |
78 | tristate "OSS PCM (digital audio) API" | |
1da177e4 LT |
79 | select SND_OSSEMUL |
80 | select SND_PCM | |
81 | help | |
82 | To enable OSS digital audio (PCM) emulation (/dev/dsp*), say Y | |
83 | here and read <file:Documentation/sound/alsa/OSS-Emulation.txt>. | |
84 | ||
85 | Many programs still use the OSS API, so say Y. | |
86 | ||
87 | To compile this driver as a module, choose M here: the module | |
88 | will be called snd-pcm-oss. | |
89 | ||
21a3479a JK |
90 | config SND_PCM_OSS_PLUGINS |
91 | bool "OSS PCM (digital audio) API - Include plugin system" | |
92 | depends on SND_PCM_OSS | |
93 | default y | |
94 | help | |
95 | If you disable this option, the ALSA's OSS PCM API will not | |
96 | support conversion of channels, formats and rates. It will | |
97 | behave like most of new OSS/Free drivers in 2.4/2.6 kernels. | |
98 | ||
90bbaf66 JY |
99 | config SND_PCM_TIMER |
100 | bool "PCM timer interface" if EXPERT | |
101 | default y | |
102 | help | |
ac1efcfb RD |
103 | If you disable this option, pcm timer will be unavailable, so |
104 | those stubs that use pcm timer (e.g. dmix, dsnoop & co) may work | |
90bbaf66 JY |
105 | incorrectlly. |
106 | ||
ac1efcfb | 107 | For some embedded devices, we may disable it to reduce memory |
90bbaf66 JY |
108 | footprint, about 20KB on x86_64 platform. |
109 | ||
1da177e4 LT |
110 | config SND_SEQUENCER_OSS |
111 | bool "OSS Sequencer API" | |
89fe5117 | 112 | depends on SND_SEQUENCER |
1da177e4 LT |
113 | select SND_OSSEMUL |
114 | help | |
115 | Say Y here to enable OSS sequencer emulation (both | |
116 | /dev/sequencer and /dev/music interfaces). | |
117 | ||
118 | Many programs still use the OSS API, so say Y. | |
119 | ||
c2f60c52 FD |
120 | If you choose M in "Sequencer support" (SND_SEQUENCER), |
121 | this will be compiled as a module. The module will be called | |
122 | snd-seq-oss. | |
1da177e4 | 123 | |
bbaf5e97 TI |
124 | config SND_HRTIMER |
125 | tristate "HR-timer backend support" | |
126 | depends on HIGH_RES_TIMERS | |
127 | select SND_TIMER | |
128 | help | |
129 | Say Y here to enable HR-timer backend for ALSA timer. ALSA uses | |
130 | the hrtimer as a precise timing source. The ALSA sequencer code | |
131 | also can use this timing source. | |
132 | ||
133 | To compile this driver as a module, choose M here: the module | |
134 | will be called snd-hrtimer. | |
135 | ||
136 | config SND_SEQ_HRTIMER_DEFAULT | |
137 | bool "Use HR-timer as default sequencer timer" | |
138 | depends on SND_HRTIMER && SND_SEQUENCER | |
139 | default y | |
140 | help | |
141 | Say Y here to use the HR-timer backend as the default sequencer | |
142 | timer. | |
143 | ||
1da177e4 LT |
144 | config SND_RTCTIMER |
145 | tristate "RTC Timer support" | |
89fe5117 | 146 | depends on RTC |
1da177e4 LT |
147 | select SND_TIMER |
148 | help | |
149 | Say Y here to enable RTC timer support for ALSA. ALSA uses | |
150 | the RTC timer as a precise timing source and maps the RTC | |
151 | timer to ALSA's timer interface. The ALSA sequencer code also | |
152 | can use this timing source. | |
153 | ||
154 | To compile this driver as a module, choose M here: the module | |
155 | will be called snd-rtctimer. | |
156 | ||
52948b3f TI |
157 | Note that this option is exclusive with the new RTC drivers |
158 | (CONFIG_RTC_CLASS) since this requires the old API. | |
159 | ||
a4f508b2 CL |
160 | config SND_SEQ_RTCTIMER_DEFAULT |
161 | bool "Use RTC as default sequencer timer" | |
162 | depends on SND_RTCTIMER && SND_SEQUENCER | |
e78a37bc | 163 | depends on !SND_SEQ_HRTIMER_DEFAULT |
a4f508b2 CL |
164 | default y |
165 | help | |
166 | Say Y here to use the RTC timer as the default sequencer | |
167 | timer. This is strongly recommended because it ensures | |
168 | precise MIDI timing even when the system timer runs at less | |
169 | than 1000 Hz. | |
170 | ||
171 | If in doubt, say Y. | |
172 | ||
332682b1 | 173 | config SND_DYNAMIC_MINORS |
b10e5391 | 174 | bool "Dynamic device file minor numbers" |
332682b1 CL |
175 | help |
176 | If you say Y here, the minor numbers of ALSA device files in | |
177 | /dev/snd/ are allocated dynamically. This allows you to have | |
178 | more than 8 sound cards, but requires a dynamic device file | |
179 | system like udev. | |
180 | ||
181 | If you are unsure about this, say N here. | |
182 | ||
7bb2491b TI |
183 | config SND_MAX_CARDS |
184 | int "Max number of sound cards" | |
185 | range 4 256 | |
186 | default 32 | |
187 | depends on SND_DYNAMIC_MINORS | |
188 | help | |
189 | Specify the max number of sound cards that can be assigned | |
190 | on a single machine. | |
191 | ||
59d48582 TI |
192 | config SND_SUPPORT_OLD_API |
193 | bool "Support old ALSA API" | |
59d48582 TI |
194 | default y |
195 | help | |
196 | Say Y here to support the obsolete ALSA PCM API (ver.0.9.0 rc3 | |
197 | or older). | |
198 | ||
e0ecb05a JY |
199 | config SND_PROC_FS |
200 | bool "Sound Proc FS Support" if EXPERT | |
201 | depends on PROC_FS | |
202 | default y | |
203 | help | |
204 | Say 'N' to disable Sound proc FS, which may reduce code size about | |
205 | 9KB on x86_64 platform. | |
206 | If unsure say Y. | |
207 | ||
21a3479a JK |
208 | config SND_VERBOSE_PROCFS |
209 | bool "Verbose procfs contents" | |
e0ecb05a | 210 | depends on SND_PROC_FS |
21a3479a JK |
211 | default y |
212 | help | |
213 | Say Y here to include code for verbose procfs contents (provides | |
a982ac06 | 214 | useful information to developers when a problem occurs). On the |
21a3479a JK |
215 | other side, it makes the ALSA subsystem larger. |
216 | ||
1da177e4 LT |
217 | config SND_VERBOSE_PRINTK |
218 | bool "Verbose printk" | |
1da177e4 LT |
219 | help |
220 | Say Y here to enable verbose log messages. These messages | |
221 | will help to identify source file and position containing | |
222 | printed messages. | |
223 | ||
224 | You don't need this unless you're debugging ALSA. | |
225 | ||
226 | config SND_DEBUG | |
227 | bool "Debug" | |
1da177e4 LT |
228 | help |
229 | Say Y here to enable ALSA debug code. | |
230 | ||
62cf872a TI |
231 | config SND_DEBUG_VERBOSE |
232 | bool "More verbose debug" | |
1da177e4 LT |
233 | depends on SND_DEBUG |
234 | help | |
62cf872a TI |
235 | Say Y here to enable extra-verbose debugging messages. |
236 | ||
237 | Let me repeat: it enables EXTRA-VERBOSE DEBUGGING messages. | |
238 | So, say Y only if you are ready to be annoyed. | |
61fb63c0 JK |
239 | |
240 | config SND_PCM_XRUN_DEBUG | |
241 | bool "Enable PCM ring buffer overrun/underrun debugging" | |
242 | default n | |
b7d90a35 | 243 | depends on SND_DEBUG && SND_VERBOSE_PROCFS |
61fb63c0 JK |
244 | help |
245 | Say Y to enable the PCM ring buffer overrun/underrun debugging. | |
246 | It is usually not required, but if you have trouble with | |
247 | sound clicking when system is loaded, it may help to determine | |
248 | the process or driver which causes the scheduling gaps. | |
e922b002 TI |
249 | |
250 | config SND_VMASTER | |
251 | bool | |
0528c749 | 252 | |
cc6a8acd TI |
253 | config SND_DMA_SGBUF |
254 | def_bool y | |
255 | depends on X86 | |
256 | ||
0528c749 | 257 | source "sound/core/seq/Kconfig" |