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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 | |
7 | select SND_TIMER | |
1da177e4 LT |
8 | |
9 | config SND_HWDEP | |
10 | tristate | |
1da177e4 LT |
11 | |
12 | config SND_RAWMIDI | |
13 | tristate | |
1da177e4 | 14 | |
0d94e41a MB |
15 | # To be effective this also requires INPUT - users should say: |
16 | # select SND_JACK if INPUT=y || INPUT=SND | |
17 | # to avoid having to force INPUT on. | |
18 | config SND_JACK | |
19 | bool | |
20 | ||
1da177e4 LT |
21 | config SND_SEQUENCER |
22 | tristate "Sequencer support" | |
1da177e4 LT |
23 | select SND_TIMER |
24 | help | |
25 | Say Y or M to enable MIDI sequencer and router support. This | |
26 | feature allows routing and enqueueing of MIDI events. Events | |
27 | can be processed at a given time. | |
28 | ||
29 | Many programs require this feature, so you should enable it | |
30 | unless you know what you're doing. | |
31 | ||
32 | config SND_SEQ_DUMMY | |
33 | tristate "Sequencer dummy client" | |
34 | depends on SND_SEQUENCER | |
35 | help | |
36 | Say Y here to enable the dummy sequencer client. This client | |
37 | is a simple MIDI-through client: all normal input events are | |
38 | redirected to the output port immediately. | |
39 | ||
40 | You don't need this unless you want to connect many MIDI | |
41 | devices or applications together. | |
42 | ||
43 | To compile this driver as a module, choose M here: the module | |
44 | will be called snd-seq-dummy. | |
45 | ||
46 | config SND_OSSEMUL | |
d886e87c | 47 | select SOUND_OSS_CORE |
1da177e4 | 48 | bool |
1da177e4 LT |
49 | |
50 | config SND_MIXER_OSS | |
51 | tristate "OSS Mixer API" | |
1da177e4 LT |
52 | select SND_OSSEMUL |
53 | help | |
54 | To enable OSS mixer API emulation (/dev/mixer*), say Y here | |
55 | and read <file:Documentation/sound/alsa/OSS-Emulation.txt>. | |
56 | ||
57 | Many programs still use the OSS API, so say Y. | |
58 | ||
59 | To compile this driver as a module, choose M here: the module | |
60 | will be called snd-mixer-oss. | |
61 | ||
62 | config SND_PCM_OSS | |
63 | tristate "OSS PCM (digital audio) API" | |
1da177e4 LT |
64 | select SND_OSSEMUL |
65 | select SND_PCM | |
66 | help | |
67 | To enable OSS digital audio (PCM) emulation (/dev/dsp*), say Y | |
68 | here and read <file:Documentation/sound/alsa/OSS-Emulation.txt>. | |
69 | ||
70 | Many programs still use the OSS API, so say Y. | |
71 | ||
72 | To compile this driver as a module, choose M here: the module | |
73 | will be called snd-pcm-oss. | |
74 | ||
21a3479a JK |
75 | config SND_PCM_OSS_PLUGINS |
76 | bool "OSS PCM (digital audio) API - Include plugin system" | |
77 | depends on SND_PCM_OSS | |
78 | default y | |
79 | help | |
80 | If you disable this option, the ALSA's OSS PCM API will not | |
81 | support conversion of channels, formats and rates. It will | |
82 | behave like most of new OSS/Free drivers in 2.4/2.6 kernels. | |
83 | ||
1da177e4 LT |
84 | config SND_SEQUENCER_OSS |
85 | bool "OSS Sequencer API" | |
89fe5117 | 86 | depends on SND_SEQUENCER |
1da177e4 LT |
87 | select SND_OSSEMUL |
88 | help | |
89 | Say Y here to enable OSS sequencer emulation (both | |
90 | /dev/sequencer and /dev/music interfaces). | |
91 | ||
92 | Many programs still use the OSS API, so say Y. | |
93 | ||
c2f60c52 FD |
94 | If you choose M in "Sequencer support" (SND_SEQUENCER), |
95 | this will be compiled as a module. The module will be called | |
96 | snd-seq-oss. | |
1da177e4 | 97 | |
bbaf5e97 TI |
98 | config SND_HRTIMER |
99 | tristate "HR-timer backend support" | |
100 | depends on HIGH_RES_TIMERS | |
101 | select SND_TIMER | |
102 | help | |
103 | Say Y here to enable HR-timer backend for ALSA timer. ALSA uses | |
104 | the hrtimer as a precise timing source. The ALSA sequencer code | |
105 | also can use this timing source. | |
106 | ||
107 | To compile this driver as a module, choose M here: the module | |
108 | will be called snd-hrtimer. | |
109 | ||
110 | config SND_SEQ_HRTIMER_DEFAULT | |
111 | bool "Use HR-timer as default sequencer timer" | |
112 | depends on SND_HRTIMER && SND_SEQUENCER | |
113 | default y | |
114 | help | |
115 | Say Y here to use the HR-timer backend as the default sequencer | |
116 | timer. | |
117 | ||
1da177e4 LT |
118 | config SND_RTCTIMER |
119 | tristate "RTC Timer support" | |
89fe5117 | 120 | depends on RTC |
1da177e4 LT |
121 | select SND_TIMER |
122 | help | |
123 | Say Y here to enable RTC timer support for ALSA. ALSA uses | |
124 | the RTC timer as a precise timing source and maps the RTC | |
125 | timer to ALSA's timer interface. The ALSA sequencer code also | |
126 | can use this timing source. | |
127 | ||
128 | To compile this driver as a module, choose M here: the module | |
129 | will be called snd-rtctimer. | |
130 | ||
52948b3f TI |
131 | Note that this option is exclusive with the new RTC drivers |
132 | (CONFIG_RTC_CLASS) since this requires the old API. | |
133 | ||
a4f508b2 CL |
134 | config SND_SEQ_RTCTIMER_DEFAULT |
135 | bool "Use RTC as default sequencer timer" | |
136 | depends on SND_RTCTIMER && SND_SEQUENCER | |
e78a37bc | 137 | depends on !SND_SEQ_HRTIMER_DEFAULT |
a4f508b2 CL |
138 | default y |
139 | help | |
140 | Say Y here to use the RTC timer as the default sequencer | |
141 | timer. This is strongly recommended because it ensures | |
142 | precise MIDI timing even when the system timer runs at less | |
143 | than 1000 Hz. | |
144 | ||
145 | If in doubt, say Y. | |
146 | ||
332682b1 | 147 | config SND_DYNAMIC_MINORS |
b10e5391 | 148 | bool "Dynamic device file minor numbers" |
332682b1 CL |
149 | help |
150 | If you say Y here, the minor numbers of ALSA device files in | |
151 | /dev/snd/ are allocated dynamically. This allows you to have | |
152 | more than 8 sound cards, but requires a dynamic device file | |
153 | system like udev. | |
154 | ||
155 | If you are unsure about this, say N here. | |
156 | ||
59d48582 TI |
157 | config SND_SUPPORT_OLD_API |
158 | bool "Support old ALSA API" | |
59d48582 TI |
159 | default y |
160 | help | |
161 | Say Y here to support the obsolete ALSA PCM API (ver.0.9.0 rc3 | |
162 | or older). | |
163 | ||
21a3479a JK |
164 | config SND_VERBOSE_PROCFS |
165 | bool "Verbose procfs contents" | |
89fe5117 | 166 | depends on PROC_FS |
21a3479a JK |
167 | default y |
168 | help | |
169 | Say Y here to include code for verbose procfs contents (provides | |
a982ac06 | 170 | useful information to developers when a problem occurs). On the |
21a3479a JK |
171 | other side, it makes the ALSA subsystem larger. |
172 | ||
1da177e4 LT |
173 | config SND_VERBOSE_PRINTK |
174 | bool "Verbose printk" | |
1da177e4 LT |
175 | help |
176 | Say Y here to enable verbose log messages. These messages | |
177 | will help to identify source file and position containing | |
178 | printed messages. | |
179 | ||
180 | You don't need this unless you're debugging ALSA. | |
181 | ||
182 | config SND_DEBUG | |
183 | bool "Debug" | |
1da177e4 LT |
184 | help |
185 | Say Y here to enable ALSA debug code. | |
186 | ||
62cf872a TI |
187 | config SND_DEBUG_VERBOSE |
188 | bool "More verbose debug" | |
1da177e4 LT |
189 | depends on SND_DEBUG |
190 | help | |
62cf872a TI |
191 | Say Y here to enable extra-verbose debugging messages. |
192 | ||
193 | Let me repeat: it enables EXTRA-VERBOSE DEBUGGING messages. | |
194 | So, say Y only if you are ready to be annoyed. | |
61fb63c0 JK |
195 | |
196 | config SND_PCM_XRUN_DEBUG | |
197 | bool "Enable PCM ring buffer overrun/underrun debugging" | |
198 | default n | |
b7d90a35 | 199 | depends on SND_DEBUG && SND_VERBOSE_PROCFS |
61fb63c0 JK |
200 | help |
201 | Say Y to enable the PCM ring buffer overrun/underrun debugging. | |
202 | It is usually not required, but if you have trouble with | |
203 | sound clicking when system is loaded, it may help to determine | |
204 | the process or driver which causes the scheduling gaps. | |
e922b002 TI |
205 | |
206 | config SND_VMASTER | |
207 | bool | |
0528c749 | 208 | |
cc6a8acd TI |
209 | config SND_DMA_SGBUF |
210 | def_bool y | |
211 | depends on X86 | |
212 | ||
0528c749 | 213 | source "sound/core/seq/Kconfig" |