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.
168 config SND_SERIAL_GENERIC
169 tristate "Generic serial MIDI driver"
170 depends on SERIAL_DEV_BUS
174 To include support for mapping generic serial devices as raw
175 ALSA MIDI devices, say Y here. The driver only supports setting
176 the serial port to standard baudrates. To attain the standard MIDI
177 baudrate of 31.25 kBaud, configure the clock of the underlying serial
178 device so that a requested 38.4 kBaud will result in the standard speed.
180 Use this devicetree binding to configure serial port mapping
181 <file:Documentation/devicetree/bindings/sound/serial-midi.yaml>
183 To compile this driver as a module, choose M here: the module
184 will be called snd-serial-generic.
187 tristate "Generic MPU-401 UART driver"
188 select SND_MPU401_UART
190 Say Y here to include support for MIDI ports compatible with
191 the Roland MPU-401 interface in UART mode.
193 To compile this driver as a module, choose M here: the module
194 will be called snd-mpu401.
196 config SND_PORTMAN2X4
197 tristate "Portman 2x4 driver"
201 Say Y here to include support for Midiman Portman 2x4 parallel
204 To compile this driver as a module, choose M here: the module
205 will be called snd-portman2x4.
207 config SND_AC97_POWER_SAVE
208 bool "AC97 Power-Saving Mode"
209 depends on SND_AC97_CODEC
212 Say Y here to enable the aggressive power-saving support of
213 AC97 codecs. In this mode, the power-mode is dynamically
214 controlled at each open/close.
216 The mode is activated by passing 'power_save=X' to the
217 snd-ac97-codec driver module, where 'X' is the time-out
218 value, a nonnegative integer that specifies how many
219 seconds of idle time the driver must count before it may
220 put the AC97 into power-save mode; a value of 0 (zero)
221 disables the use of this power-save mode.
223 After the snd-ac97-codec driver module has been loaded,
224 the 'power_save' parameter can be set via sysfs as follows:
226 echo 10 > /sys/module/snd_ac97_codec/parameters/power_save
228 In this case, the time-out is set to 10 seconds; setting
229 the time-out to 1 second (the minimum activation value)
230 isn't recommended because many applications try to reopen
231 the device frequently. A value of 10 seconds would be a
232 good choice for normal operations.
234 See Documentation/sound/designs/powersave.rst for more details.
236 config SND_AC97_POWER_SAVE_DEFAULT
237 int "Default time-out for AC97 power-save mode"
238 depends on SND_AC97_POWER_SAVE
241 The default time-out value in seconds for AC97 automatic
242 power-save mode. 0 means to disable the power-save mode.
244 See SND_AC97_POWER_SAVE for more details.