1 # SPDX-License-Identifier: GPL-2.0-only
10 select SND_SEQ_DEVICE if SND_SEQUENCER != n
16 select SND_SEQ_DEVICE if SND_SEQUENCER != n
18 # select SEQ stuff to min(SND_SEQUENCER,SND_XXX)
19 config SND_OPL3_LIB_SEQ
20 def_tristate SND_SEQUENCER && SND_OPL3_LIB
21 select SND_SEQ_MIDI_EMUL
22 select SND_SEQ_MIDI_EVENT
24 config SND_OPL4_LIB_SEQ
25 def_tristate SND_SEQUENCER && SND_OPL4_LIB
26 select SND_SEQ_MIDI_EMUL
27 select SND_SEQ_MIDI_EVENT
41 menuconfig SND_DRIVERS
42 bool "Generic sound devices"
45 Support for generic sound devices.
50 tristate "PC-Speaker support (READ HELP!)"
51 depends on PCSPKR_PLATFORM && X86 && HIGH_RES_TIMERS
55 If you don't have a sound card in your computer, you can include a
56 driver for the PC speaker which allows it to act like a primitive
58 This driver also replaces the pcspkr driver for beeps.
60 You can compile this as a module which will be called snd-pcsp.
62 WARNING: if you already have a soundcard, enabling this
63 driver may lead to a problem. Namely, it may get loaded
64 before the other sound driver of yours, making the
65 pc-speaker a default sound device. Which is likely not
66 what you want. To make this driver play nicely with other
67 sound driver, you can add this in a configuration file under
68 /etc/modprobe.d/ directory:
69 options snd-pcsp index=2
71 You don't need this driver if you only want your pc-speaker to beep.
72 You don't need this driver if you have a tablet piezo beeper
73 in your PC instead of the real speaker.
75 Say N if you have a sound card.
77 Say Y only if you really know what you do.
80 tristate "Dummy (/dev/null) soundcard"
83 Say Y here to include the dummy driver. This driver does
84 nothing, but emulates various mixer controls and PCM devices.
86 You don't need this unless you're testing the hardware support
87 of programs using the ALSA API.
89 To compile this driver as a module, choose M here: the module
90 will be called snd-dummy.
93 tristate "Generic loopback driver (PCM)"
97 Say 'Y' or 'M' to include support for the PCM loopback device.
98 This module returns played samples back to the user space using
99 the standard ALSA PCM device. The devices are routed 0->1 and
100 1->0, where first number is the playback PCM device and second
101 number is the capture device. Module creates two PCM devices and
102 configured number of substreams (see the pcm_substreams module
105 The loopback device allows time synchronization with an external
106 timing source using the time shift universal control (+-20%
109 To compile this driver as a module, choose M here: the module
110 will be called snd-aloop.
113 tristate "Virtual MIDI soundcard"
114 depends on SND_SEQUENCER
117 select SND_SEQ_VIRMIDI
118 select SND_SEQ_MIDI_EVENT
120 Say Y here to include the virtual MIDI driver. This driver
121 allows to connect applications using raw MIDI devices to
124 If you don't know what MIDI is, say N here.
126 To compile this driver as a module, choose M here: the module
127 will be called snd-virmidi.
130 tristate "MOTU MidiTimePiece AV multiport MIDI"
133 To use a MOTU MidiTimePiece AV multiport MIDI adapter
134 connected to the parallel port, say Y here and make sure that
135 the standard parallel port driver isn't used for the port.
137 To compile this driver as a module, choose M here: the module
138 will be called snd-mtpav.
141 tristate "ESI Miditerminal 4140 driver"
145 The ESI Miditerminal 4140 is a 4 In 4 Out MIDI Interface with
146 additional SMPTE Timecode capabilities for the parallel port.
148 Say 'Y' to include support for this device.
150 To compile this driver as a module, chose 'M' here: the module
151 will be called snd-mts64.
153 config SND_SERIAL_U16550
154 tristate "UART16550 serial MIDI driver"
157 To include support for MIDI serial port interfaces, say Y here
158 and read <file:Documentation/sound/cards/serial-u16550.rst>.
159 This driver works with serial UARTs 16550 and better.
161 This driver accesses the serial port hardware directly, so
162 make sure that the standard serial driver isn't used or
163 deactivated with setserial before loading this driver.
165 To compile this driver as a module, choose M here: the module
166 will be called snd-serial-u16550.
169 tristate "Generic MPU-401 UART driver"
170 select SND_MPU401_UART
172 Say Y here to include support for MIDI ports compatible with
173 the Roland MPU-401 interface in UART mode.
175 To compile this driver as a module, choose M here: the module
176 will be called snd-mpu401.
178 config SND_PORTMAN2X4
179 tristate "Portman 2x4 driver"
183 Say Y here to include support for Midiman Portman 2x4 parallel
186 To compile this driver as a module, choose M here: the module
187 will be called snd-portman2x4.
189 config SND_AC97_POWER_SAVE
190 bool "AC97 Power-Saving Mode"
191 depends on SND_AC97_CODEC
194 Say Y here to enable the aggressive power-saving support of
195 AC97 codecs. In this mode, the power-mode is dynamically
196 controlled at each open/close.
198 The mode is activated by passing 'power_save=X' to the
199 snd-ac97-codec driver module, where 'X' is the time-out
200 value, a nonnegative integer that specifies how many
201 seconds of idle time the driver must count before it may
202 put the AC97 into power-save mode; a value of 0 (zero)
203 disables the use of this power-save mode.
205 After the snd-ac97-codec driver module has been loaded,
206 the 'power_save' parameter can be set via sysfs as follows:
208 echo 10 > /sys/module/snd_ac97_codec/parameters/power_save
210 In this case, the time-out is set to 10 seconds; setting
211 the time-out to 1 second (the minimum activation value)
212 isn't recommended because many applications try to reopen
213 the device frequently. A value of 10 seconds would be a
214 good choice for normal operations.
216 See Documentation/sound/designs/powersave.rst for more details.
218 config SND_AC97_POWER_SAVE_DEFAULT
219 int "Default time-out for AC97 power-save mode"
220 depends on SND_AC97_POWER_SAVE
223 The default time-out value in seconds for AC97 automatic
224 power-save mode. 0 means to disable the power-save mode.
226 See SND_AC97_POWER_SAVE for more details.