1 # ALSA soundcard-configuration
20 tristate "Sequencer support"
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.
28 Many programs require this feature, so you should enable it
29 unless you know what you're doing.
32 tristate "Sequencer dummy client"
33 depends on SND_SEQUENCER
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.
39 You don't need this unless you want to connect many MIDI
40 devices or applications together.
42 To compile this driver as a module, choose M here: the module
43 will be called snd-seq-dummy.
50 tristate "OSS Mixer API"
54 To enable OSS mixer API emulation (/dev/mixer*), say Y here
55 and read <file:Documentation/sound/alsa/OSS-Emulation.txt>.
57 Many programs still use the OSS API, so say Y.
59 To compile this driver as a module, choose M here: the module
60 will be called snd-mixer-oss.
63 tristate "OSS PCM (digital audio) API"
68 To enable OSS digital audio (PCM) emulation (/dev/dsp*), say Y
69 here and read <file:Documentation/sound/alsa/OSS-Emulation.txt>.
71 Many programs still use the OSS API, so say Y.
73 To compile this driver as a module, choose M here: the module
74 will be called snd-pcm-oss.
76 config SND_PCM_OSS_PLUGINS
77 bool "OSS PCM (digital audio) API - Include plugin system"
78 depends on SND_PCM_OSS
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.
85 config SND_SEQUENCER_OSS
86 bool "OSS Sequencer API"
87 depends on SND && SND_SEQUENCER
90 Say Y here to enable OSS sequencer emulation (both
91 /dev/sequencer and /dev/music interfaces).
93 Many programs still use the OSS API, so say Y.
95 To compile this driver as a module, choose M here: the module
96 will be called snd-seq-oss.
99 tristate "RTC Timer support"
100 depends on SND && RTC
103 Say Y here to enable RTC timer support for ALSA. ALSA uses
104 the RTC timer as a precise timing source and maps the RTC
105 timer to ALSA's timer interface. The ALSA sequencer code also
106 can use this timing source.
108 To compile this driver as a module, choose M here: the module
109 will be called snd-rtctimer.
111 config SND_SEQ_RTCTIMER_DEFAULT
112 bool "Use RTC as default sequencer timer"
113 depends on SND_RTCTIMER && SND_SEQUENCER
116 Say Y here to use the RTC timer as the default sequencer
117 timer. This is strongly recommended because it ensures
118 precise MIDI timing even when the system timer runs at less
123 config SND_DYNAMIC_MINORS
124 bool "Dynamic device file minor numbers (EXPERIMENTAL)"
125 depends on SND && EXPERIMENTAL
127 If you say Y here, the minor numbers of ALSA device files in
128 /dev/snd/ are allocated dynamically. This allows you to have
129 more than 8 sound cards, but requires a dynamic device file
132 If you are unsure about this, say N here.
134 config SND_SUPPORT_OLD_API
135 bool "Support old ALSA API"
139 Say Y here to support the obsolete ALSA PCM API (ver.0.9.0 rc3
142 config SND_VERBOSE_PROCFS
143 bool "Verbose procfs contents"
147 Say Y here to include code for verbose procfs contents (provides
148 usefull information to developers when a problem occurs). On the
149 other side, it makes the ALSA subsystem larger.
151 config SND_VERBOSE_PRINTK
152 bool "Verbose printk"
155 Say Y here to enable verbose log messages. These messages
156 will help to identify source file and position containing
159 You don't need this unless you're debugging ALSA.
165 Say Y here to enable ALSA debug code.
167 config SND_DEBUG_DETECT
168 bool "Debug detection"
171 Say Y here to enable extra-verbose log messages printed when