Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1# ALSA soundcard-configuration
2config SND_TIMER
3 tristate
4 depends on SND
5
6config SND_PCM
7 tristate
8 select SND_TIMER
9 depends on SND
10
11config SND_HWDEP
12 tristate
13 depends on SND
14
15config SND_RAWMIDI
16 tristate
17 depends on SND
18
19config SND_SEQUENCER
20 tristate "Sequencer support"
21 depends on SND
22 select SND_TIMER
23 help
24 Say Y or M to enable MIDI sequencer and router support. This
25 feature allows routing and enqueueing of MIDI events. Events
26 can be processed at a given time.
27
28 Many programs require this feature, so you should enable it
29 unless you know what you're doing.
30
31config SND_SEQ_DUMMY
32 tristate "Sequencer dummy client"
33 depends on SND_SEQUENCER
34 help
35 Say Y here to enable the dummy sequencer client. This client
36 is a simple MIDI-through client: all normal input events are
37 redirected to the output port immediately.
38
39 You don't need this unless you want to connect many MIDI
40 devices or applications together.
41
42 To compile this driver as a module, choose M here: the module
43 will be called snd-seq-dummy.
44
45config SND_OSSEMUL
46 bool
47 depends on SND
48
49config SND_MIXER_OSS
50 tristate "OSS Mixer API"
51 depends on SND
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
62config SND_PCM_OSS
63 tristate "OSS PCM (digital audio) API"
64 depends on SND
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
76config SND_SEQUENCER_OSS
77 bool "OSS Sequencer API"
78 depends on SND && SND_SEQUENCER
79 select SND_OSSEMUL
80 help
81 Say Y here to enable OSS sequencer emulation (both
82 /dev/sequencer and /dev/music interfaces).
83
84 Many programs still use the OSS API, so say Y.
85
86 To compile this driver as a module, choose M here: the module
87 will be called snd-seq-oss.
88
89config SND_RTCTIMER
90 tristate "RTC Timer support"
91 depends on SND && RTC
92 select SND_TIMER
93 help
94 Say Y here to enable RTC timer support for ALSA. ALSA uses
95 the RTC timer as a precise timing source and maps the RTC
96 timer to ALSA's timer interface. The ALSA sequencer code also
97 can use this timing source.
98
99 To compile this driver as a module, choose M here: the module
100 will be called snd-rtctimer.
101
102config SND_SEQ_RTCTIMER_DEFAULT
103 bool "Use RTC as default sequencer timer"
104 depends on SND_RTCTIMER && SND_SEQUENCER
105 default y
106 help
107 Say Y here to use the RTC timer as the default sequencer
108 timer. This is strongly recommended because it ensures
109 precise MIDI timing even when the system timer runs at less
110 than 1000 Hz.
111
112 If in doubt, say Y.
113
114config SND_DYNAMIC_MINORS
115 bool "Dynamic device file minor numbers (EXPERIMENTAL)"
116 depends on SND && EXPERIMENTAL
117 help
118 If you say Y here, the minor numbers of ALSA device files in
119 /dev/snd/ are allocated dynamically. This allows you to have
120 more than 8 sound cards, but requires a dynamic device file
121 system like udev.
122
123 If you are unsure about this, say N here.
124
125config SND_SUPPORT_OLD_API
126 bool "Support old ALSA API"
127 depends on SND
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
133config SND_VERBOSE_PRINTK
134 bool "Verbose printk"
135 depends on SND
136 help
137 Say Y here to enable verbose log messages. These messages
138 will help to identify source file and position containing
139 printed messages.
140
141 You don't need this unless you're debugging ALSA.
142
143config SND_DEBUG
144 bool "Debug"
145 depends on SND
146 help
147 Say Y here to enable ALSA debug code.
148
149config SND_DEBUG_DETECT
150 bool "Debug detection"
151 depends on SND_DEBUG
152 help
153 Say Y here to enable extra-verbose log messages printed when
154 detecting devices.