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