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 | |
7 | select SND_TIMER | |
a9605391 | 8 | select GCD |
1da177e4 LT |
9 | |
10 | config SND_HWDEP | |
11 | tristate | |
1da177e4 LT |
12 | |
13 | config SND_RAWMIDI | |
14 | tristate | |
1da177e4 | 15 | |
0d94e41a MB |
16 | # To be effective this also requires INPUT - users should say: |
17 | # select SND_JACK if INPUT=y || INPUT=SND | |
18 | # to avoid having to force INPUT on. | |
19 | config SND_JACK | |
20 | bool | |
21 | ||
1da177e4 LT |
22 | config SND_SEQUENCER |
23 | tristate "Sequencer support" | |
1da177e4 LT |
24 | select SND_TIMER |
25 | help | |
26 | Say Y or M to enable MIDI sequencer and router support. This | |
27 | feature allows routing and enqueueing of MIDI events. Events | |
28 | can be processed at a given time. | |
29 | ||
30 | Many programs require this feature, so you should enable it | |
31 | unless you know what you're doing. | |
32 | ||
33 | config SND_SEQ_DUMMY | |
34 | tristate "Sequencer dummy client" | |
35 | depends on SND_SEQUENCER | |
36 | help | |
37 | Say Y here to enable the dummy sequencer client. This client | |
38 | is a simple MIDI-through client: all normal input events are | |
39 | redirected to the output port immediately. | |
40 | ||
41 | You don't need this unless you want to connect many MIDI | |
42 | devices or applications together. | |
43 | ||
44 | To compile this driver as a module, choose M here: the module | |
45 | will be called snd-seq-dummy. | |
46 | ||
47 | config SND_OSSEMUL | |
d886e87c | 48 | select SOUND_OSS_CORE |
1da177e4 | 49 | bool |
1da177e4 LT |
50 | |
51 | config SND_MIXER_OSS | |
52 | tristate "OSS Mixer API" | |
1da177e4 LT |
53 | select SND_OSSEMUL |
54 | help | |
55 | To enable OSS mixer API emulation (/dev/mixer*), say Y here | |
56 | and read <file:Documentation/sound/alsa/OSS-Emulation.txt>. | |
57 | ||
58 | Many programs still use the OSS API, so say Y. | |
59 | ||
60 | To compile this driver as a module, choose M here: the module | |
61 | will be called snd-mixer-oss. | |
62 | ||
63 | config SND_PCM_OSS | |
64 | tristate "OSS PCM (digital audio) API" | |
1da177e4 LT |
65 | select SND_OSSEMUL |
66 | select SND_PCM | |
67 | help | |
68 | To enable OSS digital audio (PCM) emulation (/dev/dsp*), say Y | |
69 | here and read <file:Documentation/sound/alsa/OSS-Emulation.txt>. | |
70 | ||
71 | Many programs still use the OSS API, so say Y. | |
72 | ||
73 | To compile this driver as a module, choose M here: the module | |
74 | will be called snd-pcm-oss. | |
75 | ||
21a3479a JK |
76 | config SND_PCM_OSS_PLUGINS |
77 | bool "OSS PCM (digital audio) API - Include plugin system" | |
78 | depends on SND_PCM_OSS | |
79 | default y | |
80 | help | |
81 | If you disable this option, the ALSA's OSS PCM API will not | |
82 | support conversion of channels, formats and rates. It will | |
83 | behave like most of new OSS/Free drivers in 2.4/2.6 kernels. | |
84 | ||
1da177e4 LT |
85 | config SND_SEQUENCER_OSS |
86 | bool "OSS Sequencer API" | |
89fe5117 | 87 | depends on SND_SEQUENCER |
1da177e4 LT |
88 | select SND_OSSEMUL |
89 | help | |
90 | Say Y here to enable OSS sequencer emulation (both | |
91 | /dev/sequencer and /dev/music interfaces). | |
92 | ||
93 | Many programs still use the OSS API, so say Y. | |
94 | ||
c2f60c52 FD |
95 | If you choose M in "Sequencer support" (SND_SEQUENCER), |
96 | this will be compiled as a module. The module will be called | |
97 | snd-seq-oss. | |
1da177e4 | 98 | |
bbaf5e97 TI |
99 | config SND_HRTIMER |
100 | tristate "HR-timer backend support" | |
101 | depends on HIGH_RES_TIMERS | |
102 | select SND_TIMER | |
103 | help | |
104 | Say Y here to enable HR-timer backend for ALSA timer. ALSA uses | |
105 | the hrtimer as a precise timing source. The ALSA sequencer code | |
106 | also can use this timing source. | |
107 | ||
108 | To compile this driver as a module, choose M here: the module | |
109 | will be called snd-hrtimer. | |
110 | ||
111 | config SND_SEQ_HRTIMER_DEFAULT | |
112 | bool "Use HR-timer as default sequencer timer" | |
113 | depends on SND_HRTIMER && SND_SEQUENCER | |
114 | default y | |
115 | help | |
116 | Say Y here to use the HR-timer backend as the default sequencer | |
117 | timer. | |
118 | ||
1da177e4 LT |
119 | config SND_RTCTIMER |
120 | tristate "RTC Timer support" | |
89fe5117 | 121 | depends on RTC |
1da177e4 LT |
122 | select SND_TIMER |
123 | help | |
124 | Say Y here to enable RTC timer support for ALSA. ALSA uses | |
125 | the RTC timer as a precise timing source and maps the RTC | |
126 | timer to ALSA's timer interface. The ALSA sequencer code also | |
127 | can use this timing source. | |
128 | ||
129 | To compile this driver as a module, choose M here: the module | |
130 | will be called snd-rtctimer. | |
131 | ||
52948b3f TI |
132 | Note that this option is exclusive with the new RTC drivers |
133 | (CONFIG_RTC_CLASS) since this requires the old API. | |
134 | ||
a4f508b2 CL |
135 | config SND_SEQ_RTCTIMER_DEFAULT |
136 | bool "Use RTC as default sequencer timer" | |
137 | depends on SND_RTCTIMER && SND_SEQUENCER | |
e78a37bc | 138 | depends on !SND_SEQ_HRTIMER_DEFAULT |
a4f508b2 CL |
139 | default y |
140 | help | |
141 | Say Y here to use the RTC timer as the default sequencer | |
142 | timer. This is strongly recommended because it ensures | |
143 | precise MIDI timing even when the system timer runs at less | |
144 | than 1000 Hz. | |
145 | ||
146 | If in doubt, say Y. | |
147 | ||
332682b1 | 148 | config SND_DYNAMIC_MINORS |
b10e5391 | 149 | bool "Dynamic device file minor numbers" |
332682b1 CL |
150 | help |
151 | If you say Y here, the minor numbers of ALSA device files in | |
152 | /dev/snd/ are allocated dynamically. This allows you to have | |
153 | more than 8 sound cards, but requires a dynamic device file | |
154 | system like udev. | |
155 | ||
156 | If you are unsure about this, say N here. | |
157 | ||
59d48582 TI |
158 | config SND_SUPPORT_OLD_API |
159 | bool "Support old ALSA API" | |
59d48582 TI |
160 | default y |
161 | help | |
162 | Say Y here to support the obsolete ALSA PCM API (ver.0.9.0 rc3 | |
163 | or older). | |
164 | ||
21a3479a JK |
165 | config SND_VERBOSE_PROCFS |
166 | bool "Verbose procfs contents" | |
89fe5117 | 167 | depends on PROC_FS |
21a3479a JK |
168 | default y |
169 | help | |
170 | Say Y here to include code for verbose procfs contents (provides | |
a982ac06 | 171 | useful information to developers when a problem occurs). On the |
21a3479a JK |
172 | other side, it makes the ALSA subsystem larger. |
173 | ||
1da177e4 LT |
174 | config SND_VERBOSE_PRINTK |
175 | bool "Verbose printk" | |
1da177e4 LT |
176 | help |
177 | Say Y here to enable verbose log messages. These messages | |
178 | will help to identify source file and position containing | |
179 | printed messages. | |
180 | ||
181 | You don't need this unless you're debugging ALSA. | |
182 | ||
183 | config SND_DEBUG | |
184 | bool "Debug" | |
1da177e4 LT |
185 | help |
186 | Say Y here to enable ALSA debug code. | |
187 | ||
62cf872a TI |
188 | config SND_DEBUG_VERBOSE |
189 | bool "More verbose debug" | |
1da177e4 LT |
190 | depends on SND_DEBUG |
191 | help | |
62cf872a TI |
192 | Say Y here to enable extra-verbose debugging messages. |
193 | ||
194 | Let me repeat: it enables EXTRA-VERBOSE DEBUGGING messages. | |
195 | So, say Y only if you are ready to be annoyed. | |
61fb63c0 JK |
196 | |
197 | config SND_PCM_XRUN_DEBUG | |
198 | bool "Enable PCM ring buffer overrun/underrun debugging" | |
199 | default n | |
b7d90a35 | 200 | depends on SND_DEBUG && SND_VERBOSE_PROCFS |
61fb63c0 JK |
201 | help |
202 | Say Y to enable the PCM ring buffer overrun/underrun debugging. | |
203 | It is usually not required, but if you have trouble with | |
204 | sound clicking when system is loaded, it may help to determine | |
205 | the process or driver which causes the scheduling gaps. | |
e922b002 TI |
206 | |
207 | config SND_VMASTER | |
208 | bool | |
0528c749 | 209 | |
cc6a8acd TI |
210 | config SND_DMA_SGBUF |
211 | def_bool y | |
212 | depends on X86 | |
213 | ||
0528c749 | 214 | source "sound/core/seq/Kconfig" |